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Published 28 September 1978

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REGISTERED No. D.(D.)-72

The Gazette of India

EXTRAORDINARY

PART II—Section 3-Sub-section (ii)

PUBLISHED BY AUTHORITY

No. 449] NEW DELHI, THURSDAY, SEPTEMBER 28, 1978/ASVINA 6, 1900

Separate paging is given to this Part in order that it may be filed as a separate compilation

282 GI/77—1.

(1127)

1128 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(ii)] 1129 1130 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. U^)] 1131 1132 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3XH)] 1133 1134 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(ii)] 1135

282 GI/77—2

1136 THE GAZETTE OF INDIA : EXTRAORDINARY [PART H—Sec. 3 (ii)] 1137 1138 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Sec. 3(ii)] 1139 1140 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Sec. 3(ii)J 1141 1142 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Sec. 3(ii)] 1143

282 GI/77—3

1144 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Sec. 3(ii)] 1145 1146 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Sec. 3(ii)] 1147 1148 THE GAZETTE Of INDIA : EXTRAORDINARY [PART II—Sec. 3 (ii)] 1149 1150 THE GAZETTE OF INDIA : EXTRAORDINARY [PART JI—Sec. 3(ii(] 1151

282 GI/78—4.

1152 THE GAZETTE OF INDIA : EXTRAORDINARY [PAKT II—Sec. 3(ii)] 1153 1154 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Sec. 3(ii)] 1155 1156 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Sec.3 (ii)] 1157 1158 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. a(ii)] 1159

282 GI/77—5

1160 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Sec. 3(ii)] 1161 1162 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—Ser. 3(ii)] 1163

appointed Shri .N. Jathal, retired Chief Engineer (Irrigation), Government of Gujarat and Shri Kali Charan, retired General Manager (Construction), Indian Railways as Assessors vide Notification No. 77/E(O)lI/l/4 dated 1st July, 1977 to assist and advise the Commission in respect of any matter connected with the inquiry.

The Commission has submitted his report. The Government have accepted the findings of the Commission that the accident was an 'Act of Ood.' The safeguards against similar accidents, as suggested by the Commission and Government's views ther> on are as under :—

Government's views

•>. Recommendation

S.N(

3

2

1

1.

Accepted, Tho bridge is being rebuilt accord ingly in consultation with tho Central -1 ater and Power Research Station, Pune.

Bridge No. 141 gave way as a result of the impact of the heavy flood under and arou- nd it on the night of the accident. Howsoever un- anticipa'ed and unforesee- able the magnitude of the flood might have been, it should be taken into account in the reconstruction of the bridge and a complete re- view should be made of its design.

2. The flood potential of river Golandi has increased mani- fold since the construction of railway bridge No. 139 in 1955-56. The river has now a history of overflowing its banks. It is necessary therefore, to completely re- view the design of the bridge and make such changes as may be thought necessary.

Accepted. This will be done taking into account the views of Brahmaputra Flood Control Commission, Assam State Government and their plans to train and control Golandi river, as also to modify the irriga- tion headworks & road bridge downstream. Central Water & Power Research Station, Pune, will also be consulted and model stu- dies conducted if necessary.

3.

MINISTRY OF RAILWAYS

(Railway Board)

In view of the changed his- tory of river Golandi, the Golandi Irrigation Head- works should be re-designed after a thorough hydrologi- cal survey.

RESOLUTION

Now Delhi, 15th June, 1978

It is or the Assam State Government to consider and implement this recom- mendation. This has, however, already been brought to their notice and they have been requested to implement the same. The matter will ba pursued with them.

4. The desirability of providing marginal bunds on eithei side of river Golandi up- stream of tho Railway bridge No 139 should be examined.

This will be done in consulta- r tion with the State Govern- ment and Brahmaputra : Flood Control Commis- sion. Advice of Central Water and Power Research Station, Pune (who havo suggested model studies in this regard) has also boen sought.

S.O. 580(E)—In their Notification No. 77/E(O)II/l/4 dated 30th June, 1977 published in Part II sub-section (ii) of Section 3 of the Government of India Gazette Extraordinary dated 1st July, 1977, Government appointed a Commission of Inquiry consisting of Shri Gangeshwar Prasad, a retired Judge of the High Court of Allahabad as its sole Member, to make an inquiry into tha accident involving 13 Up Tezpur Express between Udal- guri and Rowta Bagan stations on Rannlya-Ranfiapara North Section of the Northeast Frontier Railway on 30-5-77, state Us findings as to the causes of the said accident and as to tho person or persons. If an>, responsible therefor and suggest safeguards against similar accidents in future. The Government also

1164 THE GAZETTE OF INDIA EXTRAORDINARY [PART II—SEC. 3(ii)] 3 2 1 2 1 3 Accepted. 5, 9

Suggestions Nos. 1, 2, 3 and 4 should bo examined by the State Committee of Engineers, in close co- ordination with various concerned departments.

6.

Accepted. Bridges No. 114, 125 and 145 which suffered damage, are being re-bullt after careful review.

in reviewing the bridges and in other matters per- taining to them, attention should not be confined to bridge No. 141 which colla- psed or to bridge No. 139 below which river Golandi flows, but should cover all other bridges of the Ran- giya-Rangapara North section, three of which viz. bridges No. 114, 125 and 145 also suffered heavy damage on the night of the accident.

7.

. The rivers in the Rangiya- Rangapara North section should be considered as subject to sudden and abnormal floods. They should, therefore, be classi- fied as 'flashy' and the bridges constructed over them as 'vulnerable bridges.1 Naturally, the system of watch obtaining In regard to bridges regarded as 'vulner- able' should be extonded to them.

8.

1165

(c) suggest safeguards against similar accidents in future.

REPORT OF THE COMMISSION OF INQUIRY INTO

THE ACCIDENT TO 13 UP TEZPUR EXPRESS TRAIN

29/30TH MAY, 1977

THE ACCIDENT

Jn the early hours of 30th May 1977, at about 1.25 hrs.. 13 Up Tezpur Express, on its journey from Rangiya to Tczpur, met with a very serious and tragic accident at bridge No. 141, about 64 kms. from Rangiya, between Udalguri and Rowta Bagan Stations of the Rangiya-Rangapara North metre gauge single line section of Alipurduar Division on the North- east Frontier Railway.

The site of the accident is in Darrang district of Assam State and the Railway alignment here runs generally from west fo east. Bridge No. 141 is situated at a distance of 3.17 kms. from Udalguri Station and 8.98 kms. from Rowta Bagan Station. Jt is girder bridge with a 12.2m. (40) clear opening, over a small channel, locally known as Beki nala or Kahi nala, On the fateful night, the bridge and its east end approach were washed away by flood waters causing a breech of 36 metres in length. 13 Up Tczpur Express started from Rangiya, right time, at 23.45 hrs on 29th May 1977, and was running to time. It left the previous station, Udalguri, at 1.16 hrs. of 30th May 1977, after 2 minutes scheduled halt. After running barely 3,17 kms, it suddenly crashed at bridge No. 141 at 1.25 hrs., and its engine and 4 bogies immediately in the rear of the engine fell into the swollen waters of the channel below. The 5th bogie of the train become inclined, with its trailing end on the abutment of the bridge (Ranjjiya side) and its leading end submerged in water. The remaining 6 coaches were not derailed and remained standing on the track unaffected. The engine got completely submerged in water and buried under silt. As a result of the accident, 85 persons including the engine driver and two firemen lost their lives and 106 persons were injured, 84 of (he injured persons had to be hospitalised while the others, who had minor injuries, were gjven medical attention on the spot and discharged. A considerable area downstream of the channel was combed for dead bodies that might have been swept away, and several were actually recovered! A very thorough search for such dead bodies was made and the likeli- hood of any more persons having met their death in this ., disaster is very little. Out of the dead bodies recovered. 47

could not be identified.

Lt. Col. S. K, Murthy, Officer Commanding, Eastern Store Division, Sqn. Ldr, C. S. Jairath, an Alrforce doctor, and about 200 military personnel, who were travelling by that train but were occupying compartments which remained un- affected played a very heroic and magnificient part in res- cuing Ihe entrapped persons and rendering them first aid.

APPOINTMENT OF THE COMMtSSION OF INQUIRY

The Central Government, in exercise of the powers con- ferred by Section 3 of the Commission of Inquiry Act, 1952 (60 of 1952), appointed a Commission of Inquiry to inquire into Ihe causes of the accident, under the Ministry of Rail- ways (Railway Board's) Notification No. 77/E(O)II/l/4 dated 30th June 1977, which is reproduced below ;

NOTIFICATION

Whereas the Central Government is of the opinion that it is necessary to appoint a Commission of Inquiry for the purpose of making an inquiry into the causes of the acci- dent involving 13 Up Tezpur Express between Udalguri— Rowta Bagan stations on Rangiya—Rangapara North, Metre Gauge jingle line section of Alipurduar Division of the Northeast Frontier Railway on 30-5-1977.

Now, therefore, in exercise of the powers conferred by Section 3 of the Commissions of Inquiry Act 1952 (60 of 1952) the Central Government hereby appoints a Commission of Inquiry consisting of Shri Gangeshwar Prasad, a retired Judjic (T ihe High Court of Allahabad as its sole member.

2. Th^ said Commission shall—

fn) make an inquiry into the causes of the said accident and for that purpose take such evidence as may be necessary :

(h) state i's findings as to causes of tfie said accident and as to the person or persons,, if any, responsible therefor; and

3, The said Commission shall submit its report to the Central Government within a period of two months from the date on which it commences its inquiry.

Sd/-

B. MOHANTY.

Secretary, Railway Board,

& Ex. Officio Joint Secretary to the

Government of India."

APPOINTMENT OF ASSESSORS

F'urther, by the Ministry of Railways (Railway Board) notification No. 77/E(O)II/l/4 dated 1-7-1977, the Central Government, in exercise of the powers conferred by Rule 6 of the Commission of Inquiry (Central) Rules, 1972, appoint- ed 2 Assessors, namely, Shri M. N. Jathal, Retired Chief Engineer (Irrigation), Government of Gujarat and Shri Kali Charan, Retired General Manager (Construction), Indian Rail- ways, to assist and advise the Commission. The notifica- tion in this regard is reproduced below :

"NOTIFICATION

In exercise of the powers conferred by Rule 6 of the Commissions of Inquiry (Central) Rules, 1972 the Central Government hereby appoints the undermentioned persons as assessors to assist and advise the Commission appointed by the Notification of the Central Government in the Ministry of Railways No. 77/E(O)II/l/4 dated 30th June, 1977, in respect of any matter connected with the inquiry to be made by the Commission,

1, Shri M. N. Jathal, retired Chief Engineer (Irrigation),

Government of Gujarat.

2. Shri Kali Charan, retired General Manager (Construc-

tion), Indian Railways.

Sd/-

B. MOHANTY,

Secretary, Railway Board

& ex-offlcio Joint Secretary to the

Government of India."

ISSUE OF NOTIFICATION

On the 8th July, 1977, I issued a notification in pursuance of clause (b) of sub-rul'e (2) of rule 5 of the Commissions of Inquiry (Central) Rules 1972, and entered upon the Inquiry. By the said notification I asked the Railway and other depart- ments of Government and all persons, bodies or organisa- tions acquainted with any facts or circumstances relating or relevant to the purpose for which the Commission was ap- pointed to file their statement of facts setting out therein the facts known to them, on or before 16.30 hrs. on 18th July 1977 at the address specified in the notification.

It was intimated in the notification iUself that the Com- mission would in the first instance examine witnesses desired to be produced by the Railway and that the examination of witnesses would commence from 10,30 hrs. on 20th July 1977, in the Commission's Office located in the premises of the Railway Officers' Club, Maligaon. Wide publicity was given to the notification by having it published in 10 leading news- papers of Gauhati, Tezpur and Calcutta which covered 4 languages viz., English, Hindi, Bengali and Assamese. Two consecutive insertions were made in each of the 10 papers.

I reached Maligaon (Gauhati) on 17th July, 1977 morning by Tinsukia Mail. One of the Assessors, Sri M. N. Jathal, who was coming from Baroda, travelled by the same train from New Delhi to Gauhati. The other Assessor, Sri Kali Charan arrived at Gauhati by nir that very morning, and on the evening of 17th July 1*977, I held the first meeting with the Assessors,

1166 THE GAZETTE OF INDIA : EXTRAORDINARY [PART I I — S E C. 3(ii)]

By that time only 4 statements had been received in res- ponse to the notification issued on 8th July 1977 (including one from the Chief Engineer of the Northeast Frontier Rail- way for and on behalf of Union of India represented by the Northeast Frontier Railway). Since the last date for filing the statement was 181h July 1977, I waited till then to see if the response improved. I, however, immediately issued a corrigendum to the notification saying that the date of exami- nation of witnesses for the Railway fixed earlier as 20th July 1977 had been postponed and that the next date would be notified later, 3 more statements were received on 18th July 1977. Despite a period of 10 days given in the noti- fication for filing statements, the response was not good. I extended the period by 7 days and issued a second notifica- tion on 18th July 1977, inviting statements by 25th July 1977, and intimating that the recording of evidence would commence from 27th Ju'y 1977 at 10.30 hrs. Similar wide publicity WHS given to this latter notification as well.

By the date fixed in the second notification, i.e. 25th July 1977, statements' were received from the following 14 persons :

1. Sri P. G. Gopalan, Chief Engineer, Northest Fron- tier Railway for and on behalf of the Union of Jndia represented by Northeast Frontier Railway.

2. M-ijor S. Bhattacharyya (Retd.), Uttprpara, District

Hooflly, (West Bengal).

3. Sri P. R. Das, Zonal Secretary, All India Train Exa- miners' Association, N. F. Railway, New Bongaigaon. 4. Sri Dharmeswar Kalita, Proprietor "ASOMEE"

North Lakhimpur.

5. Sri Tarini Charan Pattanayak, Chatrapur, District

Ganjam (Orissa).

6. Sri S. I. Borbhuiyan, Gauhati-1.

7. Md. Shaukat Ali, Advocate, Gauhati-7.

8. Sri Sebcn Chandra Basumatary, Betel Shop owTter, Village Kahibari, Udalguri, District Darrang. 9. Sri Sabu Ram Basumatari, Village Purani, Hapagaon,

Udalguri, District Darrang,.

10. Sri Ramjit Murmu, Village Kathalgurl, Udalguri, Dist-

rict Darrang.

11. Sri Rajat Murmoo, Village Kuthalguri, Udalguri,

District Darrang.

12. Sri Chandan Maitra, Dispur, Gauhati.

13. Sri H. L. Patwari, Member of Parliament, New

DelhMl.

14. Sri Suphul Morandi. Ambulance Driver, St, Joseph.

Hospital, Udalguri, District Darrang.

Statements of 5 more persons were received nfter the due

dato I.e. 25th July, 1977 and their names are as follows :—

1. Sri Chabin Ch. Daimarl, Secretary, Mangaldal District

Plains Tribal Council, Assam, Mangaldai.

2. Sri Tiken Basumatari, Village Baligaon, Caraibari,

District Darrang.

3. Sri Blpin Basumatari, Village Daskshln, Kahibari,

Garaibari, District Darrang.

4. Sri Ramdhari Chauhan, Villnge Kathaiguri, Udalguri

District Darrang.

5. Sri Milson Masahary, Village Barbengera, Birali, Dis-

trict Darrang,

Although they were received beyond the time fixed in the notification, these statements too were taken into consideration by the Commission.

It wouUl be proper to mention at this very stage that on 18th July 1977 an application purporting to be on behalf of Sri Golap Borbora. Chairman of the Janata Party of Assam and accompanied by a Vakalatnama in favour of 4 counsel viz., Sri B, N, Sharma, Smt. Meern Sharma, Sri Sk. Chand Mohammad find Sri Bijoy Das, Advocates, was filed in the office of the Commission. The prayer contained in the appli- cation was that 3 weeks time be allowed for filing a statement. Th" time for filing ttatcments had already been extended till 25th July, 1977, and that was regarded by me as quite sufficient for filing a statement. I did not, therefore, grant the extension prayed for and directed that statement should be filed by the above date, If so desired. The order waa duly communicated. The Chairman of the Janata Party did not file a statement and neither he nor anyone on his behalf appeared before the Commission.

ISSUE OF NOTICES

In consultation with (he Assessors, I prepared a list of 18 persons, who, in my opinion, should have opportunity of being heard in the inquiry. Notices were, accordingly, issued to these persons under clause (a) of sub-rule 2 of rule 5 of the Commissions of Inquiry (Central) Rules 1972 asking them to furniBh to the Commission, by 4,30 p.m. of 25th July, 1977 statements relating or relevant to the purpose for which the Commission had been appointed. The statement was to be accompanied by an affidavit in support of the facts set forth In the statement, sworn by the person furnishing the statement. The persons to whom such notices were issued are mentioned below:

1. LL Col. S. K. Murthy, Officer Commanding, Eastern

Store Division.

2. Sri H. Gohain, Chairman, Brahmaputra Flood Control

Commission, Gauhati.

3. Sri D. N. Konwar, Addl. Chief Engineer, Flood Con-

trol, Gauhati.

4. Sri A. Shah, Addl. Chief Engineer, Irrigation, Gau-

hati.

5. Sri Prem Prasad Kakatl, Executive Engineer, Dhansiri

Project, Udalguri.

6. Sri Hem Bora, Section Officer, Dhansiri Project, Udal-

Eiiri.

7. Sri Shyamal Chandra Das, Khalasi, Dhansiri Project,

Udalguri.

8. Sri Safed Ali, Khalasi, Dhansiri Project, Udalguri.

9. Sri Dandadhar Bora, Khalasi, Dhansiri Project, Udal-

guri.

10. Sri Kanak Chandra Kalita, Khalasi, Dhansarl Project

Udalguri.

11. Father John Thomas, Catholic Church, Dhckiajuli.

12. Sri Suphul Morandi, Ambulance Driver, St. Joseph's

Hospital, Udalguri.

13. Sri S. P. Saxena, Meteorologist-in-chargi, Gauhati Air-

port, Gauhati.

14. Sri Chandra Mohan Chhetri, Timber Merchant, Udtil-

guri.

15. Sri B. Basumatary, MLA, Gauhati. 16. Sri B. M. Mahanta, Timber Merchant, Village Dia-

pham, Bhutan.

17. Sri Joseph Mittalhany, Bishop of Tezpur, Tezpur.

18. Sri A. V. Jacob, Additional Commissioner of Railway

Safety, North Eastern Circle, Oorakhpur.

Only Sri Suphul Morandi, out of the persons mentioned above, filed a statement. The statement of Suphul Morandi, how- ever, was not accompanied by an affidavit and may, there- fore, be treated as having been tiled in response to the noti- fication under Rule 5(2)(b) of the Commissions of Inquiry (Central) Rules 1972. Sri A. V. Jacob, Additional Commis- sioner of Railway Safety, North Eastern Circle, merely ac- knowledged the notice.

INSPECTION OF THE SITE

I, along with the Assessors, inspected the site on 18h July, 1977. We were accompanied by the General Manager, the Chief Engineer, the Chief Operating Superintendent and other officials of the Northeast Frontier Railway. We went by road from MaUgaon to Rangiya Railway Station where the Railway authorities had arranged for our inspection a special train having an observation car with window trailing. The inspection

1167

special left Rangiya at 10.00 lirs. We could have n very good view of the Railway line and Hie surrounding area from me observation car window,

1 propose to mention here only the stilient features noted during ihe inspection, and the details will be described al the appropriate phues so that their relevance lo ihe matters under Inquiry may be properly apprecia.ed,

We saw, enroute, bridges No, 114 and 125 which had also suffered damage on the night, of 29/30m May l'J77. Both the bridges were observed as having been severely damaged, but repaired. When we passed over bridge No. 139 across river Ciolandi, the train was slowed down and we were able to have n good look of the river, which flows from north to south. We also saw the railway and road bridges across this river and the Golandi Irrigation headworks downstream of the Railway and road bridges. Golandi river and ihe Irri- gation headworks have a very important bearing on the ques- tions under inquiry, as will be discus:el later. Ji was observed that between bridge No, 139 and bridge No. 141, on the southern side of the Railway embankment, the crops had not suffered any damage, while, on the northern side, there was considerable deposit of silt and there were no crops in the immediate vicinity of the Railway line. The inspection special reached bridge No. 141 at 13,00 hrs. and we all got down from the observation car. The Rangiya end abutment of the bridge could be seen and it had the high Hood level and the danger level painted on it. The Rungnpara North end abut- ment was not to be seen and it was said to have been com- pletely washed awav and buried under sill. We saw that the road bridge on wooden piles situated downstream of bridge No. 141 over Beki nala had also been washed away.

After Inspecting bridge No. 141 I returned to the Inspection Special. The two Assessors went for a detailed inspection of the surrounding area, accompanied by the Chief Engineer, the Additional Chief Engineer (Bridges) and tho Additional Chief Engineer (Special). The details of the inspection report of the Assessors will be discussed in detail at the appropriate placo and it would suffice to mention here only a few matters. The Assessors observed that river Golandi appeared to have over- flowed its banks and its water to have rushed towards Beki nala. Two huts situated on the left bank of Golandi river, on the fringe of the village about 700 metres (2296 ft) up- stream of bridge No. 139, appeared to have been inundated, according to the observation of the Assessors. The Assessors saw that Railway bridge No. 139 on Ciolandi, the road bridge downstream of the Railway bridge and the Irrigation headworks including the left afflux bund had not suffered any damage at all.

The Assessors returned to the Inspection Special at 15.15 his. The Special came to Rangiya Station at about 17.00 hrs and I returned to Maligaon thereafter by raad. The Assessors went onwards to Tezpur to have an aerial inspection by helicopter of the upper reaches of river Golandi next day i.e. 19th July 1977. The most important and significant facts observed by them in this inspection were that upstream of river Golandi almost near the border with Bhutan, a big stream called Khaurang Nadi joins Golandi river and on the right bank of this Nadi a huge hill-slide had taken place. The hill-slide appeared to be fresh and quite a sizeable portion of the hill appeared to have come down. The Assessors re- turned to Maligaon the same evening.

It must be mentioned that I had authorised the Assessors to make the two above mentioned inspections and I had re- quested them to place their inspection notes on record which they did.

SUMMARY OF STATEMENTS RECEIVED IN RESPONSE TO THE NOTIFICATION AND NOTICES

As mentioned earlier, 19 statements were received in res- ponse to the general notifications while no statement was received in response to the individual notices served on 18 persons.

Statement of case filed by the Railway

The statement filed by the Northeast Frontier Railway on behalf of the Union of India is a lengthy document con- taining a detailed account of the case of the Railway in regard to (he accident, and which may be summarised as follows.

282 GT/77—6

It has been stated that 13 Up Tczpur Express runs between Rnngiya and Tezpur and Ihe accident took place on 30th May 1977 at 1,25 hrs at bridge No, 141 (km 64/11-12) between Udalguri and Rowta Bagan Railway stations. The Divisional headquarters for this region arc at AUpurdutiy 284 km from the sile of accident and the control office is situated at Ranga- para Norih station 60 kms from the silt; of accident. The countryside in this region is generally plain, having paddy cul- tivation and the soil is essentially alluvial, A PWD road, which is motorable, runs parallel lo the track on the south side at a distance of 40 m (131 ft) and crosses the Railway line through the level crossing No. 41 RM(C) at km 65/0-1, close to the side of the accident, The site is situated below the foot-hills of the Himalayas to the south of Bhutan and towards the north of river Brahmaputra.

The height of the Railway embankment upto formation level

at the site of the accident has been said lo be 2.45 m (8 ft) varying generally from 1,7 m (5.6 ft) to 3.26 m (10.7 ft.) within a distance of 1/2 km on either side of the place of accident. The top of the rail is 0.4m (1.4 ft,) above the for- mation level and the railway track is on a level grade for about 60 metres (200 ft.) on either side of bridge 141. At the end of the level grade, the track falls at a gradient of 1 in 200 for a length of 145 m ,'475 ft.) towards Udalguri side, and 1 in 200 for a length of 430 metres (1420 ft) towards Rowla Bagan. The bridge is, therefore, according to the Railway, higher than its approaches.

It has further been slated by the Railway that the train left Harisinga Railway station at 01.00 his. and while pro- ceeding towards Udalguri crossed bridge No, 114 (56/3-4 km at about 01.09 hr:;. and bridge No. 125 (59/10-11 km) at about 01.12 hrs. It may here be noted that both these bridges got damaged after the train had crossed them that night. The train left Udalguri sla'.ion at 1.16 lira, for Rowta Bagan station and after going about 3 kms met with the accident at bridge No. 141 (64/11-12 km), as the Rowta Bagan end abutment of the said bridge had been washed away by a sudden flash flood of a very high magnitude.

The statement describes bridge No. 141 as catering the small channel or streams which remains dry for most part of the year and has its source in the paddy fields about 2.4 km from bridge No. 141, The channel flows generally from, north to south and is known by various names such as Kahi nala, Beki nala etc. It has no bank in the sense in which the term is commonly understood, and the bed of the channel is 0.6 m to 1.2 m (2 ft to 4 ft) below the adjoining ground. The catchment area of the channel IR only 1.1 square miles, according lo the topo sheet of Survey of India (1946- 47 edition).

According to the Railway, bridge No. 141 was constructed sometime in 1932-33 as a 2x20 ft. grider bridge on wooden piles, but in 1946 it was rebuilt an 1x40 ft girder bridge on masonry substructure with concrete foundations, In 1963-64, the girders of the bridge were changed to metre gauge main line standard and the bridge was raised by 2,32 ft. to provide for vertical clearance of 2 ft. between the bottom of the girder and the highest flood level. The bridge had been provided with boulder flooring and the slopes had been pitched with, boulders. The bridge had no history of flood damage 4nd it did not require any special precautions to be taken in connection with running of trains on it during the mon- soon.

It has been further mentioned that the Permanent Way In- spector, Majbat, in whose jurisdiction the accident occurred had seen the section from Harisinga to Majbat, the next station after Rowta Bagan, by trolley on 29th May 1977. He left Udalguri station at 20.15 hrs, after taking line cFear and reached Rowta Bagan station at 21.25 hrs, While inspect- ing the bridges he noticed that the water level at bridge No. 139 was about 0:6 m and at bridge No. 141 about 1.0 m below tho danger level. The Permanent Way Inspector also inspected bridge No. 91 between Harisinga and Udal- guri and bridge No. 145 between Udalguri and Rowata Bagan, which had been giving some trouble in the past, and left instructions with 1he concerned Mates to keep watch on these two bridges.

It has been averred by the Railway that there is a detailed procedure for thorough inspection of every bridge every year by the Railway Officials. The results of the inspection are recorded in a register called the 'Bridge Inspection Kigister'

1168 THE GAZETTE OF INDIA EXTRAORDINARY [PART H - S E C. 3(ii)]

Bridge No. 141 was inspected for the year 1976-77 by the Assistant Engineer, Rangaparn Noi'th on 23rd December 1976. The entries made in this regard in the Bridge Inspec- tion Register were scrutinised by the Divisional Engineer/IIT, Alipurduar Junction, Sri A. K. Biswas, on 7th Ixbruary 1977 and also by the Additional Chief Engineer (Bridges), Sri A. R. S. Rao. The entries clearly indicate that the bridge was quite sound and that it had no history of flood damage. It is added in the statement that the Railway main- tains a list of vnlnerubl'c bridges on the basis of experience and that bridge No. 141 was not a vulnerable bridge. The entries of the Bridge Insoection Register show that ever since its construction the bridge had always b^en behaving well, and had provided satisfactory discharge of water.

It has been said that the Bishop of Tezpur, Mr. Joseph Mittathany, alon£ with Father John Thomas of Catholic Church, Dhekianili passed in their motor car at about 22.43 hrs. by the PWD road that runs almost parallel to the Railway track and crossed the level crossing at km 65/0-1, but they did not find water on any of the road bridges. The lowest point of the road is 0.19 m, (0.63 ft.) below the previous high Hood level recorded at bridge No. 141, which is 106.92 m (350.7 ft) and 2.45 m (8 ft) below the rail level' at the bridge. On this basis it has been pointed out by the Railway that even at 22.45 hrs. water had not reached the previous high flood level. The level of the flood water at bridge No. 141, on the night of 29730th May 1977. rose to 108,76 m or 1.84 m (6 ft) higher than the previous highest level.

The statement also refers to bridge No, 139 at km 63/15-16 across the river Golandi which flows generally from north to south 700 metres to the west of Beki naln. The source of river Golnndi is in the Bhutan hills and the dis- tance from the source upto bridge No. 139 is about 17 km and its catchment area is 11.6 sq. miles, as seen from the topographical map of Survey of India (1946-47 edition). This bridge wns rebuilt in 1955-56 with three girders (2X37 ft and 1X60 ft) on 40 feet deep well foundations for piers and reinforced concrete piles for the abutments protected by guide bunds lined with stone pitching. About 229 m (700 ft) downstream of bridge No. 139 are the Golandi Irrigation Scheme headworks. The Irrigation head- works have 10 sluice gales of 10 ft width opening upwards. They were constructed in 1970 and arc maintained and opera- ted by the Irrigation Department of the State of Assam. River Golandi has wefl defined banks and the height of the land adjoining the river varies from 0.6 m to 0.9 m (2 ft to 3 ft) above the silted bed level of the river, The nrevious highest flood level at bridge No. 139 was 108.46 m (355.75 ft) while the flood level reached on 29/30th May 77 was 109.25 m (358,3 ft).

The statement of case of the Railway emphasises that the flood which camo down Golandi river on the night of 29/30th May 1977 was not only unprecedented in magni- tude and fury but was also a flash flood that cfme all of " sudden without any previous warning. The heavy flood caused the river to extensively overflow its left bank, since the ground levels of the areas generally fall towards tho left i.e. towards Railway bridge No, 141. The overflow started from a point 2.5km upstream of bridge No. 139 and extended upto the bridge. The water that overflowed flooded the area between the railway track on the south and the PWD road on the east and formed a bis reservoir. Water level at bridge No. 141 exceeded the highest flood level ever recorded on this sile by 1.84 m (6 ft). The heavy flow of water through bridro No. 141 undermined the Rarn'apara and abutment of the bridge and it collapsed. In addition, 24 m of eastern approach bank was also washed av/ay causing n breach of 36 m in length.

It has also been set forth in the statement of case that the flood on that fateful night was so heavy that in addition to bridge No. 141, three other bridges in the area, nnmelv bridge No, 114 at km 56/3-4, bridge No. 125 at km 59/10-11 both between Hnrisinga and Udaijuiri stations, and bridge No. 145 at km. 65/14-15 between Udalcuri and Rowta Bagan stations suffered heavy damage. The PWD road also suffered damage and 208 m lenpth of it was breached. None of the above mentioned bridges had been classified as vulnerabfe on the basis of past records, It has been said that 13 Up Tezpur Express crossed bridges No. 114 and 125 only a few minutes earlier which indicated that the flood was very sudden and extremely heavy and it. occurred simultaneously in this entire area from bridge No. 114 to bridge No. 145 i.e. kms 56 to 66.

It has been asserted that on the morning of 30th May 1977 it was observed that river Golandi was flowing within its well defined channel and Golandi river and Beki Channel had not merged. Due to heavy rain owing to a sudden cloud burst in the hills, catastrophic flood occurred in Golandi river resulting in the water rising suddenly much above its banks. The natural slops of the ground being towards bridge No. 141, the water flowed over the banks of Goi'andi towards bridge No. 141. This created conditions under which bridge No. 141 had to c op up with nearly 7 times its discharge capacity, resulting in its collapse.

It has been further asserted that local rainfall in Ihe urea was not heavy during May, 1977 but was normal. The state- ment concludes, therefore, that the cause of breach couTd not be the local rain of the night of 29/30th May 1977.

The statement then refers to monsoon patrolling and says that the system of monsoon patrolling prevalent on the Railway has been evolved after an experience of many years. On the Northeast Frontier Raii'way the period of currency of monsoon patrol is from 1st June to 15th October. This, according to the Railway, is justified by the fact that on the north bank where this Railway line runs, there has been no incidenco of breach before Juno or outside the period 1st June to 15th October, Accordingly, the date for starting mon- soon patrolling in this area has been fixed as 1st June. This year too the monsoon broke out on 7th June. The Railway haa also a system of receiving weather warning message from tho Meterological Department, but no weather warning message was received on 29th May 1977.

Put in a nutshell, the case of the Railway is that the collaps of bridge No. 141 WM due to reasons beyond human control and not to any negligence on the part of the em- ployees of the Railway, and, to quote the words of the statement filed by the Railway is "can legitimately be said to be an Act of God."

Siatement of Sri S. Bhattacharyya :

Major S. Bhattacharyya (Rctd) has filed a statement ex- pressing doubt about the fact whether Permanent Wav Inspector had actually trollied over the section as mentioned in the newspaper reports. He has also impliedly suggested carelessness, in the inspection even if it hid actually been done.

Statement of Sri P. R, Das :

Sri P. R, Das, Zonal Secretary, All India Train Examiners' Association, N.F. Railway, has made some vague allegations against the RaiFway administration which have no relevance to the accident under inquiry.

Statement of Sri Suphul Morandi :

The Statement filed by Sri Siiphul Morandi, driver of ambulance car, St. Joseph Hospital, Udnigiiri k to the effect that on his return journey from Tezpur to T.'clnifu'i, when he reached Kahibari at 1,45 his., their was 2f"tr> 3 feet deep water on tho road ahead and he stopped there, for sometime. Meanwhile Tezpur Express came slowly and whlstFed twice and as soon ns it climbed the bridge, it fell down. At that time water was flowing o vc the railway line also, on the eastern side of the bridge. His st^cm^Tit describes further tho rescue work he rlu] thferfter. It mnv be noted that he has not given the date, but he ev;dently meant that the happenings about which he has sroken took place on tho night of 29/30th May 1977.

Statement of Sri Tarini Charan Pattanayak

Sri Tarini Charan Pattanayak has offered some general suggestions regarding safeguards to prevent recurrence of such incidents.

Statement of Md, Shaukat Ali and Sri S. I. BorbNiiyan :

Md. Shnukat Ali, Advocate, GauhatI PI,I Sri S I Borbhuiyan of Gauhati who are rerated to one another un- fortunately, lost 9 members of their family in this tragic

1169

accident. They have filed separate statements, but have con- finscl themselves to merely stating what they did after hecring about the accident.

Statement of remaining 12 persons :

The statements of the remaining 12 persons viz., Sri H. I.. Patwari, M.P,, Sri Chandan Maitra, Private Secretary to Sri H. L. Patwari, M.P., Sri Dharmcswar Kalita, Proprietor, Asomee, Sri Chabin Chandra Daimari, Secretary, Mangal- dui District Plains Tribal Council' of Assam, Sri Bipin Bsmimatari, Sri Ramdhari Chouhan, Sri Milson Masahary, Sri Tiken Basumalari, Sri Sebcn Basumatari, Sii Sabu Ram Basumatari, Sri Ramjit murmu and Sri Rajat Murmoo can be ground together as they are in substance of a similar nature. They allege that the sluice gates of the Golandi Irrigation headworks were not fully open. They claim to have seen the gates at different points of time on 29th and 30th May 1977. Their statements differ from one another in respect of the extent to which the Rates were open or closed, but they are unanimous is asserting that the sluice gates were not fully open. They have expressed the view that Golandi river had overflowed its banks due to obstruc- tion in the free flow of the river caused by closure of the gates and they have accused the Irrigation Department of the State Government of Assam of negligence in the opera- tion of the gates.

After examination of all the statements filed before the Commission, I, in consultation with the Assessors, ptepaicd a list of 65 witnesses (including 32 witnesses produced by the Railway) whose evidence we felt it necessary or proper to record, Out of the 33 witnesses summoned by the Commission itself, 28 turned up for their evidence and the remaining 5 did not. In view of the evidence already re- corded, the Commission considered the evidence of the witnesses who had not turned up unnecessary, and accord- ingly exempted them.

2. Whether proper 'lin-e clear1 had been obtained for the passage of this train between Udalguri and Rowta Bagan stations hetween which bridge No. 141 falls, and whether the train was running within permissible speed limits ?

3. Whether proper patrolling of track was being done by

the Railway ?

4. Whether proper inspection of the track was being

done by the Railway ?

5. Whether the bridges on the track were being properly

inspected, checked and maintained ?

6. Whether there was any satisfactory arrangement for receipt of weather warnings or weather forecasts by the Railway 7 If so. whether any such warning or forecast requiring special steps to be taken by the Railway or special watchfulness to be kept in re- gard to the running of trains had been received for 29th May, 1977 ?

7. Whether there was any such constructional defect in bridge No. 141 as could have led or contributed to its collapse and whether the bridge provided for

adequate waterway ?

8. Whether the collapse of bridge No, 141 was due only to the Hood in Bekinala or to some other reasons also ?

9. Whether there was any obstruction in the free flow of river Golandi on the night of the accident causing an abnormal rise in its water level and, consequently, in the water level of Bekinala also ?

I now propose to take up each of these matters separately

and discuss them in detail,

1. Whether the engine of 13 UP Tezpur Express of 29th

May, 1977 was in good working order ?

In view of the fact that the ultimate cause of the accident was the sudden collapse of bridge No. 141 it may not seem necessary to inquire whether the engine was in good working order during its journey from Kangiy* to Tezjiur on the night of 2.9/30th May, 1977. But, I think that in order to satisfy myself that the driver could have stopped the train near the bridge, as he naturally would have if he had seen or sensed danger, T should ascertain whether or not there was any such defect in the engine as could have disabled him from doing so or could have been an obstacle in his seeing or sensing the danger,

1170 THE GAZETTE OP INtnA : EXTRAORDINARY [PART II—SEC. i{

the time it enters the shed till leaves the shed. According to the register, an extract of which he filed, (Ex. 2), the engine entered the shed at 19.15 his. underwent repairs from 20.45 hrs. to 23,00 hrs. and left the shed at 23.15 Ins. to work 13UP Tczpur Bxpress. Sri K. D. Chakvaborty, Electrical Fitter, Rangiya Junction (W. No. 5) has stated that he checked the head light of the engine on 29th May, 1977 evening and found it in order. He obtained the signature of the driver Sri S. C. Das in the Driver signature book in token of the fact that the head light was working, The fact that the headlight of the engine was working finds support from the statement of Sri Feku, Mate of gang No. 10 (W. No. 12) who has said that "he saw the headlight of 13 UP Tezpur F.xpress" when he crossed it near bridge No. 128 while on his way to inspect bridge No. 124 a little after 00.30 hrs. on 30th May, 77. AssistHnt station Master, Udal- guri, Sri Ranjit Sarkar (W. No. 8) had also seen the head- light. He has said that he was on the platform when the train came in and "noticed the headlight of the train and found it bright." The Train stopped at Udalguri station in the nor- mal way which shows that its brakes were functioning pro- perly,

The above evidence leaves no room for doubt about the fact that the engine of 13UP Tezpur Kxpress of 29fh May, 1977 was in good working order on its run to Tczpur.

2. Whether proper 'Line clear' had been obtained for the passage of this train between Udalguri and Rowta Began stations between which bridge No. 141 falls, and whether the train was running withifi permissible speed limits ?

Sri Ranjit Sarkar, Assistant Station Master, Udalguri (W. No. 8) has stated that before any train leaves the station 'line clear' has to be obtained from the next station after tak- ing prior approval of the section controller. He has described the procedure of obtaining thc 'line clear' token and said that the token can be taken out from the block instrument at his station (Udalguri) only when the Station Master at the next station (Rowki Bagan) turns simultaneously and in a proper manner thc handle of the block instrument at his own station. According to Sri Ranjit Sarkar, 13UP Tezpur Express arrived at Udalguri station 1,14 hrs of 30th May, 1977 and he had asked for 'lino clear' from Rowta Bagan Railway station at 106 hrs, and obtained it at 1.07 hrs. Thc token number relating to the 'line clear' was 14. Entries to the above effect have been made in the 'Train register' main- tained nt thc station and an extract of it (P.*. 5) has been filed. Thc extract of the 'Train register of Rowla Bagan station filed by Sri A. K. Gungopadhya, Assistant Station Master Rowta Bajmn. (W. No. 9) corroborates the fact that 'line clear' for 13UP Tezpur Express was asked for and given. In thc timings of the 'line clear' enquiry and its reply, there is a little discrepancy. These timings have been shown as 1 15 hrs. and 1.16 hrs. respectively tis against J .06 hrs. and 1.07 hrs. recorded in the 'train register' at Udalguri station The token number, however, is the same. The small difference in the timings does not appear to be at all material.

Sri P. K. Nandi, Section Controller, Rangapara North, (W. No. 11) whoso duty, according to him, is to control the move- ment of trains over the section has stated that he was on dutv in (he Control Office from 18.00 hrs. on 29th May 77 to 06.00 hrs. of 30th May, 77 and that he charted th" movement of 13UP Tezpur Express on the 'train control chart' right Irom Rangiya Station. The train. according to the chart (Ex. No. 9), left Udalguri station at 1,16 hrs, of 30th May 77 and met with the accident before it could reach the next station Rowta Bagan.

The Guard of the train Sri P. K. Basu (W. No, 13) has testified t0 the fact that thc maximum permissible speed on this section Is 65 kmph and the train was running at a speed of 40-45 kmph at the time of the accident. There is absolu- tely no reason for not accepting the testimony of the Guard.

It is thus amply clear that 13UP Tezpur Express was run- ning with proper 'line clear' and in accordance with thc rules, and there is nothing to indicate that the condition of the track, in thc section which thc train was entering required any oaution to bo given to trig driver.

3. Whether proper patrolling of the track was being done

by the Railway ?

Sri K. Suryanarayana, Additional Chief Engineer (Trdftk) (W. No. 31) has explained in his deposition the system of monsoon patrolling obtaining on the Railway. According to him, the Northeast Frontier Railway is divided into three rain- fall zones. Zone 'A' is thc 'normal' rainfall zone' with rainfall 65 inches, zone 'B' is thc 'heavy rainfall zone' with rainfall from 65 inches to 110 inches and Zone 'C is the 'very heavy rainfall zone' with rainfall above 110 inches. The Rungiya—Rangapara North section in which the accident occured falls in zone 'B' The witness has stated that continuous monsoon patrolling during night is done from the 1st of June to 15th October, but the date of commencement of monsoon patrolling may be varied from year to year according to circumstances, that is, according or the onset of monsoon is early or delayed. The date from which patrolling is to start has, according to the witness, to b"$ determined by the Divisional Egineering 1st June is the normal date for the start of monsoon patrolling in terms of the stand- ing circular issued by thc Chief Engineer of thc Railway, but it is subject fo variation each year according to the decision of the Divisional Engineer, which he takes by the end of May. Tho witness has further stated that he did not find this year any such circumstances as called for an earlier start of monsoon patrolling.

According to Sri A. K. Biswas, Divisional Engineer, Alipur- duar Junction (W. No. 27) monsoon normally sets in over this area sometime in the first or second week of June. The mon- soon patrolling starts normally from 1st June but if the mon- soon sets in earlier, arrangements arc made for an earlier start of patrolling. In answer to the question as to how he determines the onset of monsoon, the witness has stated that he does so on the basis of actual rainfall and reports received from supervisors and Assistant Engineers regarding thc appear- ance of unusual features in their section like rain cuts, sinking of bank and slipping of earth slopes which arc associated with (he advent of monsoon.

Another witness too, Sri S. N. Sharma, Permanent Way Inspector, Majbat (W, No. 14) who is in charge of this sec- tion has said that patrolling had not been introduced as a regular measure and that as per instructions it vvns to be introduced from 1st June, 1977.

The Chief Engineer of thc Railway, Sri P, Ci. Uopalan,

(W. No. 32) has deposed that the period of monsoon patrol- ling is from 1st. June to 15th October but still the actual date of commencement for each year is decided by the Divisional Engineer. The period, 1st June to 15th October, is in accor- dance with the standing circular issued by the Chief Engineer in 1960. Prior to 1960, the period of monsoon patrolling was from 16th June to 15th October, but thc date of starting the patrolling was advanced in I960 to 1st June presumably be- cause of the changed behaviour of monsoon in the area.

T may briefly refer here to the statement of Sri S. P. Saxena Metereofogist-in-Charge, Gauhati (W, No. 41) although hia evidence will be dealt with in detail at the later' stage. He has said that monsoon advanced in Assam and adjoining states this year from 7th June, 77. His answer to the question whether Irom thc rainfall at Majbat, thc place of nearest rain gauge of the Metcreological department, as recorded by him it could be concluded that the monsoon had started at Majbat in May 77 was in the negative.

Sri K. Suryanarayana, Additional Chief Engineer (Track) (W. No. 31) whose evidence has already been dealt with above has referred to the histogram (Ex, 45) showing thc breaches on the Northeast Frontier Railway in the past and said that no breaches had occurred prior to 12th June of any year on the relevant section of the Railway. The standing instructions of the Chief Engineer issued in 1950 appear therefore, to be justified

The above mentioned witness has also explained the mothod or patrolling. As monsoon patrolling was not in force on the relevant date, it may seem out of place to advert lo the ques- tion of method of patrolling. But, a brief examination of it appears to be called for in order to find out whether the acci- dent was likely to have been averted if the patrolling had actually been in force. According to Sri Suryanarayana pat- rolmen! have a beat of 5 kilometres each and they have to walk over this distance. Patrolling starts in the evening and lie patrolmen start from a .station, go upto the end of their beat at a speed of Skm per hour and r*turn to Hie station after exchanging their patrol books with adjacent patrolment. The

1171

eqdftnnent they carry with them comprises of two hand signal lamps, detonators, torch light, their patrol book and water proof garments like cjips, rain coats etc. He has deposed that in a heavy rainfall area as the section in question is, patrolling is done with a frequency of 4 hrs, or in other words, the track Is covered and inspected once in every 4 hours, in a 'very heavy rain- fall area', intensive patrolling is resorted to, that is, tha track is covered once in every 2 hours. In reply to the question whether more intense patrolling should be intro- duced in this section, the witness has said that the intensity of patrolling is bHsed on the intensity of rainfall, meaning thereby that a more intense patrolling in this area is not called for.

The rainfall figures for the month of May 1977 uf the rain gauges in the area in question us appearing from Exhibit No. 61 produced by Sri V. S. Jafa, District Magis- trate, Tezpur (W, No. 39) who had taken it into his custody after (he accident and Exhibit No. 67 produced by1 Sri S. P. Saxena, Meteorologist Incharge, Gauhati (W. No. 41) are as follows:

Date

Rain fall in 24 hours

Majbat (I.M.D Recorded at 8.30 hrs.

.) Tangla (I.M.D.) Recorded at 8.30 hrs.

Golandi Irriga- tion head works Recorded at 7.30 hrs.

(Ex : 61)

(Ex : 67)

(Ex : 67)

1-5-77      3.75 mm          5.0  mm
2-5-77     14.25 mm         13.8 mm
3-5-77     10.0 mm           9,2  mm
4-5-77     Nil              Nil
5-5-77     30.0 mm           8.9  mm

91.4 mm

13.2 mm

13.0 mm

Nil

41.5 mm

6-5-77

Nil

5.0 mm 7-5-77 8-3-77 9-5-77

Nil 13.0mm Nil Nil

Nil Nil Nil 10.0 mm Nil Nil Nil Nil

Nil Nil

10-5-77 11-5-77

Nil Nil

Nil

12-5-77 Nil

Nil

13-5-77

14-5-77

1.4 mm 47.2 mm 34,8 mm 9.4 mm

15-5-77 16-5-77 17-5-77

18-5-77

7.5 mm 40.0 mm 35.0 mm 34.0 mm 2.5 mm 15.0mm 2.5 mm

Nil 44.4 mm 3.0 mm

19-5-77 20-5-77

21-5-77

Nil 32.7 mm 23.3 mm 11,1 mm 7,4 mm 14.2 mm Nil Nil Nil

22-5-77

Nil 10.0mm 10.0 mm

Nil 16.8 mm 18.8 mni

23-5-77 Nil

Meteorological department. It has examined Sri S. „ N. Sharma, Permanent Way Inspector, Majbat (W. No. 14) who has said that on receipt of weather warning messages, instructions are issued to the gangmates to undertake patrolling. It has also examined Sri S. Sikhdar, Assistant Engineer (W. No. 26) who has stated that on receipt of weather warning on 7th May '77 he alerted the Permanent Way Inspectors to keep watch over their respective sections and, to start patrolling upto 48 hours beyond the date indicated in the weather warning message if the situation so demanded. To the same effect is the statement of Sri P. G. Gopalan, Chief Engineer, N. F. Railway (W. No. 32) who has said that weather warning messages in regard to very heavy rainfall arc directly received by the Divisional Engineer and he takes immediate measures for patrolling the track in accordance with para 1702 of the Indian Railway Way and Works Manual. As stated by Sri S. Sikhdar, Assistant Engineer, (W. No. 26) Sri A. K. Biswas, Divisional Engineer (W. No, 27) and Sri K. Suryanarayana. Additional Chief Engineer (Trapk) (W. No. 31), weather warning message had not been received on 29th May '77. This fact is confirmed by the Meteorologi- cal Officer Sri S. P. Saxena (W. No. 41) from whose office the messages are issued. It may be mentioned here that despite the fact that the weather warning message had not been received, the Mate of Gang No. 10 Sri Feku (W. No. 12) who woke up around 00.30 hrs of 30th May '77 and found that it was raining went out to see bridge No. 124 because it hud given some trouble earlier. The Permanent Way Inspector of the section Sri S. N. Sharma (W. No. 14) has given evidence to the effect that while trolleying back, to his headquarters on the night of 29th May '77 at about 20.30—21.00 hrs. he inspected bridges No. 91, 139, 141 and 145 and, because it was raining, he left instructions with the Mates of Gangs No. 8 and 11 to keep watch on bridge No. 91 and bridge No. 145 in the event of heavy rain as the said bridges required watch. Pursuant to his instructions the Mate of Gang No. 11 Sri Nauman (W. No 16) directed two of his ganRmen Kali (W. No. 17) and Dhuman (W. No. 18) to go and examine the condition of bridge No. 145, and they did so.

In judging the sufficiency or otherwise of patrolling, two matters have to be kept before the mind. On the one hand, considerations of inconvenience or economy cannot bo allowed to outweigh the paramount consideration that safety of human lives is at stake. On the other hand, the measures that have to be taken to obviate risk to human safety must be within the range of reasonable practicabi- lity and have to be based on and guided by experience. As would be seen later, the bridge had for long stood the test of time, the monsoon had not set in, the flood level in the nala below the bridse had always remained far below the level reached on the fateful night within a short span of time, the heaviness and the fury of the flood were unprecedented, and there was nothing In the conditions preceding the accident to suggest any extra caution or to point to an inadequacy in the patrolling.

I am, therefore, clearly of opinion that neither the system of patrolling nor the actual patrolling was at fault.

Not available

3.8 mm

Nil Nil

24-5-77

Nil

4.8 mm 25-5-77 26-5-77

Nil Nil 27-5-77 28-5-77

2.5 mm 25.0 mm Nil Nil 32.0 mm 30.0 mm 120.0 mm

Nil Nil Nil 12.0 mm 92,2 mm 196,4 mm 77.2 mm

29-5-77 30-5-77 31-5-77 Nil

4. Whether proper inspection of the track was being

done by the Railway ?

In the first instance, it has to be seen whether the system of track inspection on the Railway is adequate having regard to considerations of safety and whether it was being followed properly.

1.2 mm

56.6 mm

39,5 mm

132.7 mm

These figures clearly establish that the rainfall in this

area in May '77 was not heavy prior to 29th May "77.

The evidence discussed above points clearly to the con- clusion that no unusual circumstances had made appearance and there was nothing in the situation prevailing this year to make earlier patrolling necessary or expedient.

The Railway h;w attempted to show that quite apart from th" regular monsoon patrolling, it nlso initiates put- rolling on receipt of weather warning messages from the Sri P. C. Gopalan, Chief Engineer (W. No. 32), has stated that the maintenance of track is in charge of Engineers of whom he is the head. The Administration has laid down a schedule of inspection going from the Inspector upwards right upto the Chief Engineer, and there is a procedure in accordance with which the Inspector's work is checked by the Assistant Engineer, whose work is in turn checked by the Divisional Engineer and the latter's by the Additional Chief Engineer and the Chief Engineer.

Sri S. N. Sharma, Permanent Way Inspector, Majbat (W. No. 14) has stated that he goes out once a week for inspection bv trolley, twice a week by foot plate of engine and twice a week by brake van of a train. He had inspected the section Udalguri—Rowta Bagan by trolley on 28th

117 TTE OF INDIA : EXTRAORDINARY [PART H _ S E C. 3(ii)]

May '77. Also, he had travelled over this section by train on 29th May '77 morning on his way to Harisinga station and had returned by trolley in the evening. As it had become dark by ilic time ue reached Udaigiri, he Had to proceed thereafter on 'line clear'. The witness had asserted lhal he did not experience any difficulty while trolleying irom Harisinga to Kowta Uagan on ^yili May 77 even- ing. It must be .stated that with reguid to the witnesses trolley movement on 29th May '77, the evidence contains certain discrepancies. The statement of Sri D. K. Guha, Assistant Station Master, Udalguri (W. No. 17) is that the Permanent Way Inspector Sri Sharma asked him for 'line clear1 which he obtained from the next station Rowta Bagan after taking prior approval of the Section Controller Sri Nandi. Extracts from the train registers of Udalguri (Ex. 4) & Rowta Bagan (Ex. 6) stations, however, show that the timings noted for making 'line clear' enquiry, obtaining 'line clear reply', and 'train entered section' differ. These 3 timings in the 'train register' at Udalguri aro 20,30 his,, 20.31 his. and 20.40 hrs. while the- corresponding figures in the 'train register' at Rowta Bagan arc 19.35 his, 19.36 hrs and 20.15 hrs respectively. There is a discrepancy also in regard to the token number lor 'line clear'. It is noted as 26 in the register at Udalguri station but as 27 at Rowta Bagan station, although the private number noted in both the registers is the same. Sri D. K. Guha has explained the discrepancy regarding the timings by saying that after obtaining 'line clear' for tho trolley he went out to perform some shunting operations and entered the timings later "based on approximation". He has said that he might have made a mistake as he had noted the tunings later. The Assistant Station Master, Rowta Bagan, Sri A. K. Gangopadhya (W. No. 9) has in his evidence explained the discrepancy with regard to the token number by saying that he might have made a mistake in hearing as the block instrument was noisy. The movement of the Permanent Way Inspector's trolley is also recorded in the train register which is maintained at Majbat Railway sta- tation. Sri D. C. Das, Assistant Station Master, Majbat (W. No. 10) has proved the entries in the train register at his station (Ex. 7) regarding the movement of the trolley on 29th May 1977. According to the register the trolley left Rowta Bagan station at 21.30 hrs. and reached the next station, Majbat, at 22,30 hrs. Sri P. K. Nandi, Section Controller, Rangapara North (W. No. 11) has deposed, that while on duty from 18.00 hrs. on 29th May 1977 to 06 00 hri. on 30th May 1977, he charted out that movement of the Permanent Way Inspector's trolley from Udalguri Railway station. He has further said that Assistant Station Master, Udalguri sought his permission for tho movement of PWI's trolley which he gave. The discrepancies in regard to the timings of trolleying and the token number do not affect its genuineness. On the other hand, they are indicative of {fie fact that the trolleying was in fact done. If preparation of false records and been reported to by the Railway, care would naturally have been taken to see that they are in accord and such discrepancies as there are would not have been allowed to creep into them, The explanation offered for the discrepancies is, in my opinion, quite acceptable.

Advertising again to the matter of inspection of track, I find that Sri P. K. Bhattacharjee, Inspector of Works, Majbat (W. No, 19) has stated that ho goes out foi< inspection by trolley 7 days in a month on an average, Further, he does inspection by train for 12 to 13 days in a month. According to his statement, he trollied over this section from TangJa to Majhat station on 8th May 1977, Sri S. Sikhdar, Assistant Engineer, Rangapara North (W. No. 26) has said that he is required to inspect the trank, level crossings, points and crossings etc. which fall under his charge and that he inspected this section by push trolley on 8th May 1977 and by train on 26th May 1977. The Divi- sional Engineer, Sri A. K. Biswas (W. No, 27) has deposed that he inspected the section by trolley on 30th January, 1.977. Sri K. Suryanarayana, Additional Chief Engineer (Track) (W. No. 31) has stated that every 6 kilometres of track is in charge of a gang and that the gangmen work on their beat everyday except the rest day which falls once a week. The Keyman of the gang has to go over the entire section every day except the rest day and on that day the Mate docs the duties of thi Keyman. Thus, according to the evidence the track is watched and attended to bv some RaiFway staff every day. Sri P, G. Gopajan, Chief Engineer (W. No, 32) has stated thut he too goes out for inspection 6 to 8"^iays in a month and that during his inspection he examines the track and discusses all problems which the Divisional Engine- ers have.

There is, thus, ample evidence that the Railway has a well defined and eileciive system for inspection of the track at various levels and that this particular section of the track too, was bciDg inspected accordingly. The evidence of the Permanent Way Inspector isri Sharma who had inspected the section only a few hours before the mishap took place and found everything alright, is particularly important and shows that the track was in a fit condition for the passage of trains.

5, Whether the bridges on the track were being properly

inspected, checked and maintained '?

The accident took place due to wash away of a bridge and it is, theieforc, one of ihc mo.it peitinent questions to be examined.

According to the evidence of Sri A. R. S. Rao, Additional Chief Engineer (Bridges) (W. No. 29) the Railway has an elaborate system of constant watch, inspection and mainten- ance of bridges. The Permanent Way Inspector who is responsible for the safety of the track, trolleys over the section once a week and sometimes oftener, and if he finds any defect in a bridge, he brings it to the notice of the Inspector of Works for rectification. The Inspector of Works who is responsible for the safety of structures, including bridges, frequently inspects his section and if he comes across any defeat, he rectiiics it. The Assistant Engineer, who is in charge of the safety of the track and structures inspects his section at least once a month by trolley and if he notices any defect, he immediately instructs his inspectors to rectify the same. The Divisional Engineer periodically inspects the section by trolley and ho, likewise, advises tho inspectors and the Assistant Engineer to rectify any defect that he comes across. It further appears from his evidence that a detailed and thorough inspection of bridges is also made by the Assistant Engineer once a year after tho monsoon, The Assistant Engineer records the result of his inspection in the 'Bridge inspection register'. Extracts of his inspection notes are sent immediately to the Inspectors lor compliance. After completion of the bridge inspection, the Assistant Engineer sends the register to the Divisional Engineer with a certificate that he has personally examined all the bridges. The Divisional Engineer scrutinises the entries and passes orders on the points referred to him and gives a certificate at the end of the register in token of his having scrutinised all the entries. The register is then sent to the Additional Chief Engineer who also scrutinises all the entries and puts his signature in token of having done so.

It is also in the evidence of this witness that when he received the bridge register in respect of the section in which bridge No. 141 lay, he went through the inspection notes recorded by the Divisional Engineer and issued necessary instructions regarding certain bridges. Bridge No. 141 does not find H place among the bridges regarding which instru- tions were issued. Sri A. R. S. Rao has also said that he goes out for inspection for about 6 to 8 days in a month and during inspections, he inspects bridges in addition track and structures. He normally confines his inspection to bridges referred to him and sometimes makes random selection of bridges to see the quality of maintenance. He was asked as to whether he considered any change in the method of watching necessa;ry and his reply was in the negative. His attention was drawn to the inspection notes recorded against bridge No. 141 in the bridge register which showed that the pitching of floor and slope had been dis- turbed during the years 1963-64, 1964-65 and 1971-72 and he was asked whether they indicated any defect in the bridge. He replied that boulder floor pitching is a flexible apron which is liable to minor disturbances, which are attended to in normal routine maintenance.

The procedure of inspection of bridges described by Sri A. R. S, Rao has also been testified to by Sri S. Sikhdar, Assistant Engineer, Rangapara North (W. No. 26). He has stated that his main duties in regard to bridge inspec- tion are to inspect the bridges thoroughly at least once a year and enter tho inspection notes in the bridge inspection register. The inspection is done after the monsoon and

1173

starts sometime In October. He carried out the last annual inspection of bridge No. 141 on 23rd December '76 and found everything alright except that a few hook bolts were loose and 3 sleepers No. 23, lfi and 4 were required to be renewed. In his view, these defects were not serious enough to require immediate attention although he noted them in Ihc register. The loose bolts were actually attended to shortly thereafter and he found them quite alright during his next inspection. He has described the system of follow- up action on his inspection notes and said that after record- ing the notes an extract of the defects noted is prepared and sent to the subordinates for taking necessary action. The Sectional Inspector of Works and Permanent Way Inspector carry out rectification of the defects which is ensured by the Assistant Engineer. Speaking of bridge No.y 141 in particular Sri S. Sikhdar has said that he passed over it on 8th May '77 by trolley and again on 26th May '77 by train and on neither of these occasions he noticed anything unusual about the bridge. It may not be out of place to mention here that Sri Sikhdar inspected bridee No. 139 also which is over river Golandi, on 10th November '76 and noted some def- ects which were rectified by 30th April '77.

The evidence of Sri A. K. Biswas, Divisional Engineer (W. No. 27) too, is important in this context. He has said that on receiving the bridge inspection register he scrutinises the remarks of the Assistant Engineer thoroughly, and where the Assistant Engineer suggest1? inspection by the Divisional Engineer, he does so. In addition, he also inspects some of the bridges to find out if the inspection carried out by the Assistant Engineer has been thorough. At the end of each bridge register, he certifies that he has personally scru- tinised the register and issued orders regarding essential points requiring a decision by him, and forwards the regis- ters to the Additional Chief Engineer (Bridges).

He has stated that he trollied over the section Udalguri- Rowta Bagan on 30th January '77 and found nothing un- usual with any of the bridges in that section. He inspected bridge No. 139 on 31st January '77 and noticed that the apron crates on the left guide bund had been disturbed and water was attacking the right guide bund mole head. He gave instructions that the action suggested by the Assistant Engineer be carried out,

As stated at an earlier stage also, Sri P, C, Gopalan, Chief Engineer (W. No. 32) has deposed that as head of the organisation in overall charge of maintenance of track, bridges and other structures, he does inspections 6 to 8 days in a month and holds frequent discussions with his Divisional Engineers to find solutions to the various problems which they might have.

The evidence discussed above clearly shows that the ins- pection of bridges was effective, the elaborate system nf inspection wa? beini; nctunllv followed, and it served the purpose for which it is intended.

Railways Way and Works Manual, He has admitted that if the weather forecast had been received for 29th May, 1977, the chances of the accident might have been minimised but he has said that this catinot be said with any certainty. The evidence of Sri S. Sikhdar, Assistant Engineer (W. No. 26), is that he receives weather warning messages from the Meteorological Department, Gauhati, but no such message was received on 29th and 30th May. According to the witness, the last weather warning message was received on 7th May, 1977. Sri A. K. Biswas, Divisional Engineer (W. No. 27) too has stated that the Railway gets warnings from the Meteorological Department for heavy rain but on 29th/30th May, 1977, there was no such warning. The last warning received, according to him, was on 14th May '77. Sri S. N. Sharrna, Permanent Way Inspector (W. No. 14) has said that on receipt of weather warning instructions are- issued to gangmates to undertake patrolling but no warn- ing was received on 29th/30th May, 1977, and that the last warning had been received on 12th April, 1977.

1174 THE GAZETTE OF INDIA : EXTRAORDINARY [PART IIS—EC. 3(ii)]

the abutment and on the side slopes of the bank near the bridge there was boulder pitching. This pitching extended upwards upto very near the bottom of the girder, which was 2' A" above the highest flood level (HFL) reached at this bridge during its entire life till then, and the HFL had been marked on the abutment of the bridge. The track on either side of Ihe bridge was level for a distance of about 61 m. (1200 fl.) and thereafter falling at a gradient of 1 in 200 towards both Udalguri and Rowta Bagan stations. The bridge was, therefore, higher lhan its approaches. The average height of ihe embankment at the bridge site was 2.45 m. (8 ft), The previous nnd the new high flood levels (HFL) were as under :

HFL prior to 30-5-77 107.10 m. 351.38 ft)

HFL on 30-5-77 108.94 m (357.43 ft)

These facts regarding the bridge may be gathered from the statements of Sri A. R. S. Rao, Additional Chief Engineer (Bridges) (W. No. 29) ; Sri K. Suryanarayana, Additional Chief Engineer (Track) (W. No. 31) and Sri P. G. Gopalan, Chief Engineer (W. No. 32).

It is in the evidence of Sri A. R. S. Rao, (W. No. 29) that the bridge was constructed as per standards laid down in the Indian Railway Standard Codes of Practice. The minimum depth for an open type foundation, as this bridge had, is Code as 4 feet, The depth of foundation provided for this bridge was 4-1/2 feet and it was, therefore, in order. Hia evidence also shows that the bearing pressure on the soil was within safe limits. The boulder flooring and the slope pitch- ing provided at this bridge could enable water to pass through it at a velocity of 12 feet per second without causing scour. The bridge inspection register shows that prior to 29th May, 1977 there had never been any damage to the structure of the bridge in its life of 30 years except that there was some disturbance of boulder flooring and pitching which was set right everytime it occurred. Such disturbance, according to Sri A. R. S. Rao, is a normal feature regarding bridges.

It would be relevant to give also a short history of the bridge since ita construction, The 'History of Indian Rail- ways', corrected upto 31st March 1961 shows that Tangla— Majbat section was opened to traffic on 1st December 1932. It may, therefore, be inferred that bridge No, 141 falling in this section must have been constructed prior to that date and sometime nearabout. The bridge was constructed origi- nally as a 2 x 19' 8" girder bridge, on pile foundations, as can bo seen from the completion drawing of the original bridge. Plan No. 33937 (Ex. 25). It has been alleged by the Railway that the bridge was reconstructed in 1946. There is no direct evidence to prove this fact, but there is sufficient material pointing towards it. A diversion plan No. 11213 LMH (Ex. 34) has been produced showing that a diversion track was designed to be laid near the site of the bridge. This could have been necessitated only on account of reconstruction of the bridge, in order to keep the traffic moving during the period of reconstruction. Another plan, No, REN/PNO/ B/58/57 (Ex, 22), has been produced by the Railway which was prepared in 1957 in connection with the change of the girder of this bridge. The plan shows the substrucrural details of the bridge as existing in 1957. These details are different from those shown in the completion plan (Ex. 25) of the bridge originally constructed and establish that reconstruction of the bridge had actually been done.

Sri A, R, S. Rao, Additional Chief Engineer (Bridges) (W. No. 29) has stated in his evidence that the work as proposed in Plan No. REN/PNO/B/5K/57 (Ex. 22) was not carried out finally. There is a plan of 1963, viz. Plan No. B/43/63 (Ex. 23), in which it was proposed to change the girder of bridge on the date of the accident was noted to be lower than suggests that the height of the bridge was raised by 2,32 feet to provide a clearance of 2 ft. above the HFL and below the bottom of the girder.

It should be pointed out here lhat the rail level at the bridge on the date of the accident was noted to be lower than the rail level shown on this plan and this may suggest in inference that the height of the bridae had not been actually raised, but this inference is sufficiently rebutted by three im- portant facts, Two of them' are claimed to have been noticed by Sri A. R, S. Rao, Additional Chief Engineer (Bridges) (W. No. 29). The first was that the breached cross section of the bridge approach bore marks of two different layers, and the second lhat there are signs of new masonry work on the Rangiya end abutment which is still existing. These two facts were observed by Sri P. G. Gopalan, Chief Engineer (W. No. 32) also. There is no reason to doubt the correct- ness of the ittatement made by Sri A. S, R. Rao, or question the inference drawn by him, The third fact finds mention in the General Manager's Annual Report to the Railway Board for the year 1962-63 (Volume I) where it has been clearly mentioned that the work of re-girdering bridge No. 141 was in progress, This leads to the inference that the work had been taken in hand and naturally, therefore, it was completed also. It may also be reasonably presumed that in the execu- tion of the work there was no substantial departure from the plan prepared for it, Having considered all the material on this matter, I have, no hesitation In arriving at the conclusion that the height of the bridge had been raised,

I should not omit to notice that the completion plnn res- pecting the reconstruction of bridge No. 141 has not been produced by the Railway. The Railway has, however, given satisfactory evidence of the fact that thorough search had been made for it both in the Divisional Office and the Headquarters Office, but it was not traceable. In view of what has been said above, the absence of the completion plan loses its signi- ficance.

Structuaral soundless or otherwise of a bridge is always relative to its capacity for passing the 'design discharge', i.e. the maximum discharge of water which is expected to pass through it, 1 shall now deal with this feature of brfdoe No. 141.

It is common place lhat the capacity of a bridge to dischar- ge water depends on its opening or waterway Bridge No, 141 was a single span of 40 ft. opening and was across a small nala which has ita origin about 2.4 kms upstream of the bridge in the local paddy fields, The catchment of the nala upto (he bridge has been given by the Railway as 1,1 square miles as per the feet unit topo sheets of 1912-13, (reprinted in 1946- 47) and 0.34 square miles as per the new metric topo sheets of 1961 and 1972. The calculations made by the Railway Engineers are, however, based on the larger area of 1.1 square miles.

Calculations in regard to the maximum expected discharge from the catchment area, discharge capacity upto the previous HFL, and the discharge capacity upto the bottom of the girder have been made, firstly, by Sri A. R. S. Rao, Addition- al Chief Engineer (Bridges) (W. No. 29) and Sri K. Suryanara- yana, Additional Chief Engineer (Track) (W. No. 31), second- ly, by Sri H, Gohain, Chairman, Brahmaputra Flood Control Commission (W. No. 50), a witness called by the Commission, and thirdly, by the learned Assessors. The calculations differ, and the differences will be appreciated by a reference to the following table.

Discharge that would pa9S upto the old HFL mark

Discharge capacity upto the • bottom of girder

Design Discharge calculated from catchment area (in cusecs) (in cusecs) (In cusecs)

4500 5000 4611 2500

1300 1300 2150 1000

2600 2900 2670 1600

Sri A.R.S. Rao Sri K. Suryanarayana Sri H. Gohain Assessors

. ... >—.—.

Sri A. R. S. Rao, Sri K, Suryanarayana as also Sri H. Oohain have indicated the basis of all their calculations, but the exact basis of the calculations done by the learned Assessors in respect of the 'design discharge' is not noted in their report. The relevant portion of their report is reproduced below :

"On the basis of the available data in respect of catch- ment area of Beki, calculations regarding the expected discbarge were made. These calculations indicate that

1175

discharge from Beki nala cannot under any circum- stances exceed about 1000 cusecs. On the strength of the same it can be definitely concluded that the waterway, the protection works anJ the foundations of bridge No. 141 were quite adequate to safely pass the expected discharge from Beki catchment. That it could also safely pass an additional discharge i.e. a total discharge of 2500 cusecs which, provided sufficient margin of safety is cleaily and definitely indicated."

It is not necessary to resolve the differences in the result of these calculations because they do not seem _ to be very material for the purpose of answering the question that Is being dealt with. The outs'anding and the indisputable fact is that the discharge capacity of the bridge was greater than the 'design discharge' i.e. the maximum discharge expected from the catchment of Beki nala, and also more than (he discharge which passed through the bridge at the old HFL.

It would be relevant to mention here that bridge No. 141 had never been regarded by the Railway as a vulnerable bridge and never classified as such in ihe list of vulnerable bridges (Ex. 20) maintained by the Rai'way. The importance of classification lies in ihe fact that the system of watch in regard to vulnerable bridges differs from that meant for non-vulnerable bridges. While vulnerable bridges are watched continuously during the monsoon period by posting special watchmen at the bridge site round the clock, non-vulnerable bridges are watched only by the regular rronsoon patrolmen. The record of bridge No. 141, as noted in the 'B'idge Ins- pection Register', clearly points to the fact that it had no history and had not shown any liability to damage during floods in the past. It would not, therefore, have been neces- sary to arrange for any special watch even if Ihe monsoon had commenced. It is to be noted that Sn A. K. Biswas, Divi- sional Engineer (W. No. 27) has stated that any bridge liable to damage during monsoon is brought under the list of vul- nerable bridges even if it was not originally vulnerable, and change of classification is done as and when necessoiy. It is, therefore, clear that the classification has no risidity about it and it may be varied according to circumstances.

The facts discussed above amply bear out that bridge No. 141 had no such structural defects as could contribute to its collapse and it was quite sound and safe. Further, it had pro- vision for adequate waterway.

8. Whether the collapse of bridge No. !41 was due only to

the flood in Beki nala or to some o'her reasons nlso ?

As mentioned in the preceding paia, the catchment of Beki nala bridge No. 141, is only 1.1 square m;!s°, The nala does not have its origin in any hill or lake but only in the local paddy fields, 2.4 kms upstream of the bridge, and it is, there- fore, abundantly clear that it has no perennial source. The nafa only drains the water from the adjoining fields and thus remains dry for most of the year. Evidence in support of this fact has been given by Sri Nasir Ali (W. No. 6) and Sri V. S. Jafa, District Magistrate, Darran.e (W. No. 39), a witness called by the Commission. Sri Feku, Mate of Gang No. 10 (W. No. 12) has stated that this nala had never had any flood since 1944 and that the maximum depth of water that has ever flowed through it was 3 to 4 ft. Topo Sheet (Ex. 55/1) indicates that the nala has only one small tributary and that too rises similarly in the paddy fields and has no perennial source. As stated by Sri K. Bangarayya, Senior Engineer (FCW) (W. No. 28), the bed of tbe nala is only 0.6 m to 1.2 m (2 ft to 4 ft) below the adjoining ground and this indicates that it has not much of a depth. Its width too has been stated by this witness to be only 1.5 m to 3.0 m (5 ft to 10 ft.).

A number of witnesses have deposed that on 29'h May 1977 the local rainfall in that area was not heavy. Sri S. N. Shi'rmr!, Permanent Way Inspector (W. No. 14) troll ied over the sec- tion between 20.15 hrs and 21.25 hrs and according to him it was raining intermittently, "sometimes heavily and sometimes lightly". At 22.30 hrs, Father John Thomas of Catholic Church, Dhekiaiuli (W. No. 60), a witness called by the Com- mission, passed that way by car and he has stated that it was raining "quite ordinarily". Lt. Col. S. K. Murthy fW. No. 40), one of the occupants of the ilf-fatcd train and a witness called by the Commission, has said that at the time of the accident. i.e. at 1.25 hrs. it was only "drizzling rather heavily". It is apparent that even if the local rainfall was heavy at times it

?82GI/77—7

was not such as could have caused an enormously heavy flow in Beki nala.

The question naturally arises as to how the volume of water that flowed through Beki nala on the night in question assumed such proportions ? The evidence and the circum- stances which would be set forth heieafter positively show that the extraordinary rise in ihe wafer of Beki nala was due to the wholly unpiecedented action of liver Golandi. Sri K. Bangarayya, Senior Engineer (FCW) (W. No. 28) has produced a plan No. CE/SK/37/ (Ex: 27) prepared by him after a detailed survey of the complele r na indicating deposit of heavy silt in the area between Golan.'i liver and Beki nala, starting from a poi..t about 2.5 kn;s upstream of bridge No. 139 He has also pioduced another plan, No. CE/SK/31/77 (Ex: 26). in whkh the contours of she ground level between Golandi river and Beki nala and for some area on either side have been shown Sri K. Bangarayya has also stated that the ground slopes ^eneuilly from the left bank of river Golandi towards bridge No. 141 and the latter plan mentioned above also shows the same state of things. The natural conclusion is that there was an on-rush of water on the night of 29/30di May, 1977, from river Golandi towards bridge No. 141. The extent of the on-rush may be gathered from the evidence detailed below.

Sri Biindaban Mandal, resident of Bekigaon (W. No. 24) has stated that his house is situated on the left bank of Golandi river about 50-60 feet from it and nearly 1-1/2 fur- longs upstream of Jhe Railway bridge. On (he night in ques- tion, he was sleeping in his hut on the floor and between 12 O' Clock and 1 O' Clock in the night he was awakened by the water entering his house. The water was so huge in quantity that it washed away his house, which was made of mud. He has further stated that he could not go out anywhere in the night as "there was water everywhere".

The evidence of Sri Tulsi Ram Sharma, resident .of village Thana Udalguri (W. No. 45), a witness called by the Com- mission, is that he had been, r;si<.':-m in Udalgmi for about 30 years and had seen neither such heavy rain nor such Hood as he saw on the night of 29/30th May. 1977. Further, his entire land (by which he probably meant crop) of 45 bighas was ruined that night by the silt deposited by the water of river Golandi.

Sri Seben Chandra Basumatary, resident of village Kahibari (\V. No. 48), a ",'itness called t>> the Commission, who has his shop about 200 feet from the sits of the accident, has deposed that on the night of 29/53th May, 1977, the flood water spilled over and flowed into Beki nala and damaged bridge No. 141. He has also deposed that house situated on the left bank of Golandi at a point one mile upstream of it was washed away and the material of the house was car- ried away by water. According to the witness, such a flood had never been seen in his life-time.

Sri Suphul Morandi, Ambulance Car Driver, St. Joseph Hospital, Udalguri (W. No. 51), a witness cailed by the Commission, has said that on a return journey from Tezpur to Udalguri, when he reached Kahibari village at about 1.45 a.m. on 30th May, 1977, he found the road shead covered with water and breached. He saw 13 Up Tezpur Express coming and the engine foiling into the water ?t bridge No. 341, and wanted to go over for rescue work, but could not do so "as there was water all round".

Sri K. Bangarayya, Senior Engineer (FCW) (W. No. 28) whose evidence has been referred to above, has stated that during the course of the survey, he saw on ihe walls of some of the huts signs of flood water having reached upto 2 feet above the floor level. The signs were clearly visible on that portion of the wall which had been submerged under water. His statement has been corroborated by Sri A. R. S. Rao Additional Chief Engineer (Bridges) (W. No. 29) and Shri p! G. Gopalan, Chief Engineer (W. No. 32) and also bv the local inspection of the learned Assessors on the 18th July, 1977, who. too, saw these flood marks in the huts. The learned Assessors also saw extensive deposit of silt in the area left by the over- flowed water of river Golandi.

The evidence makes it quite clear thnt there was a massive flood in river Golandi on the night in question and its water spilled over the left bank extensively. How bridge No. 141 came to be affected has now to be seen. The flood was of a magnitude that far exceeded the capacity of discharge

1176 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(ii)]

of bridges No. 139 and 141 and, therefore, the water headed up in the area covered upto the railway track on the south and Ihe PWD road on the cast, thus getting impounded in Ihc shape of a big reservoir. The depth of the water in the reservoir kept increasing until a breach took place at bridge No. 141, which released the impounded water. The maximum level reached by the water in the reservoir has been recorded as 108.94 m in the report (Ex. 96) of Sri P. G. Gopalan, Chief Engineer (W. No. 32) prepared by him after having the re-levelling of the area done on 3rd August, 1977 at the direction of the Commission. The discharge that would have passed at this level through bridge No, 141 prior to the breach has been calculated by Sri A. R. S. Rao, Additional Chief Engineer (Bridges) (W. No. 29) ns 5800 cusecs (Ex. 37), by Sri K, Suryanarayana, Additional Chief Engineer (Track) (W. No. 31) as 6280 cusecs (Ex. 44) and by the learned As- <-rfors as 4000 cusecs. The learned Assessors have given their j: isong for the differences in the figures of the Railway En- gineers and their own. Much significance does not, however, attach to the differences in view of the fncl th;it every one of these 3 calculations ultimately leads to the conclusion that the maximum discharge canacity of the bridge was greatly exceeded. The immediate effect of the abnormal rise in the level and velocity of the water was scouring of the bridge structure. On what specific portion the scouring took place and what course the water took for effecting the scour is a matter of difference of opinion between the Engineers of the Railway and the learned Assessor1?. The tenor of ihe evidence of Sri P, G. Gopalan, Chief Engineer (W. No. 32) is that in hii opinion, the scouring took place on account of the impact of water coming from Golnndi side and rushing past the Rowta Bfigan end abutment. His suggestion was that the scour developed on the front side of the abutment (i.e. towards the opening). As opposed to this, the opinion of the fearied Assessors is as follows :—

" Since the flow waB highly oblique and since the unprotected railway bank, adjacent to the abutment was under attack by a massive soil! from river Golandi, which suddenly developed into a channel in H matter of hours, the bank could not withstand the the heavy attack and gave way. Thereafter, due to high velocity a deep scour develoDed at the back. of ihe abutment, which was much below the bottom of foundations. When measured in silted condition this scour was 7 feet below (ho bottom of founda- tion* ".

With due respect to the learned Assessors and to the En- gineers, it appears to me that the matter is lankly one of speculation and what is really important is the fact of scour- ing and not the process or angle of attack adopted by the water which brought it about-

The extent of the havoc wrought by the flood in Beki ntla whatever causes might have led or contributed to it. may be visualised with the help of the photographs (Ex: 39, 100/1 and 100/2) of the site of the accident taken just a few days after the accident,

Chief Photographer (W. No. 23). The evidence of Sri B.

Some very important features about the upper reaches of Golandi have still to be noted. A river called Khaurang meets river Golandi near the Indian border. This had not been shown in the old topo sheet prepared in 1912-13 (reprinted in 1946-47), Khaurang has undergone a change, since then, as indicated in the new topo sheets prepared in 1961 and 1972 (Surveyed in 1959-60 and 1967-68) and now meets Golandi. Originally, only a small offshoot of Khnurang join- ed Golandi but now that offshoot has become considerably widened and it contributes substantially to the water of Golandi. The present width of the offshoot of Khaurang has been spoken to by Sri J. R. Reddy, Executive Engineer (W. No. 20) and was also observed by the learned Assessors at the time of their aerial inspection on 19th July 1977, It is quite probable that it was only on account of heavy and unprecedented rainfall that this widening of Khaurang took place, although it must be admitted that there is no positive evidence regarding the time of widening. Apart from this there was a hillslidc on the right bank of Khaurang which was noticed by Sri J. R. Reddy (W. No. 20) during his sur- vey and by the learned Assessors at the time of their aerial inspection on 19th July, 1977. Sri .f. R. Reddy and the Asses- tors alike observed marks of freshness in the hillslidc.

1177

Mandal, resident of Rekigaon (W. No. 24) who was awaken- ed by the flood waters entering his house between 12 O' Clock and 1 O' Clock in the night points in the same direction.

The timings regarding the passage of train from Harislnga to Udalguri Railway Station on the night in question also abundantly prove the suddenness of the flood. The train pas- sed Harisinga Railway Station at 1.00 hrs. and reached Udalguri at 1.14 hrs. crossing bridges No. 114 (km 56|3-4) and 125 (km 56] 10-11) cnroule at about 1.09 hrs. avid 1.12 hrs. respectively. The bridges were sound and safe whea the train crossed them but immediately thereafter, they suffered heavy damage. Bridge No. 141 collapsed before 1.25 hrs. and it is, therefore, obvious that all these 3 bridges were- damaged within a very short interval of time on account of the extreme suddenness of the flood.

The evidence of Father John Thomas of Catholic Church, Dhckiajull (W. No. 60), a witness called by the Commis- sion, has an important bearing in this connection. He han stated that he left Udalguri on his return journc> to Tezpur at 22.30 hrs. of 29th May, 1977 and, proceeding along the PWD road, passed the site of the accident, a little while later. At that time he noticed watei on the road only at one place which was about one kilometre from the bridge i.e. bridge No. 139, towards Udalguri. From this it may easily be inferred that there was no water on the road nearabout, the site of the accident at that time. The lowest point of the road nearabout this location is about 8 feet below the rail level of bridge No. 141 as appears from the evidence of Sri A.R.S. Rao, Additional Chief Engineer (Bridges) (W. No. 29). It has been stated by Sri Rao that the water rose ulti- mately to a level of 1-4" below the rail level. In other words, there was a rkc of 6 feet 8 inches in a brief span of 2 hrs, and the rise was clearly, therefore, of a high order and com- pressed within an exceedingly short interval.

It is to bo noticed that river Khaga flowing under bridge No. 114 which was damaged on the night of the accident also has its source in Bhutan hills and there was an excessive rise in the water level of that river also on the night in ques- tion. The devastation caused by the excessive rain in Bhutan was evidently extensive.

The irrcsistable conclusion from the evidence discussed above is that the collapse of bridge No. 141 was not due only to the flood in Beki nala but, also and mainly to the flood in and spill over of the water of river Golandi.

9. Whether there was any obstruction in the free flow of river Golandi on the night of the accident causing an abnormal rise in its water level and consequent- ly, in the water level of Beki nala also ?

The Irrigation Headworks on river Golandi to the south of bridge No. 139, loomed very large in the course of hear- ing, and, indeed, they have a very important bearing in the determination of the cause or causes that might have led or contributed to the collapse of bridge No. 141. Naturally, I have to discuss this question at some length.

The Golandi Ini.cfiation Scheme headworks are situated 229 metres (751 ft) downstream of bridge No 139 aero 3 river Golandi. The headworks have 10 sluice gates, each 10 feet wide and 8,5 ft. high. The afflux bunds on either side Mtend upto the PWD road upstream, the length being 600 feet on the left side and 700 feet on the right aide. The top wMth (if the afflax bunds is about 12 feet and the size siopet are 1-112 : 1. A gauge is fitted in the river 500 feet upstream of the headworks for measuring the daily water levels. Two irrigation canals take off from the headworks, one towards east and the other towards west. The headworks Jwe been constructed in accordance with the plan (Ex. 59) and are designed for a discharge of 7000 cusecs. These facts regard- ing the headworks are clear from the statement of Sri Prem Prasad Kakfifi, Executive Engineer (Irrigation) (W. No. 34) and Sri p, G. Gopalan, Chief Engineer, N. F. Railway (W. No. 32),

It is now to be ascertained whether tho sluice gates were open partly open or closed prior to the accident, on the night in question. All the witnesses relating to this mnt- ter were called by (he Commission itself, and they fnil into 3 categories. Tn the first category fall the employees of the Irrigation Department of the Government of Asjam who were posted at the headwords, and they were Sri Hem Kanta Bora. Section Officer, Sri S. C. Das Khalasi and Sri Safed Ali, Khalasi. These witnesses may be said, to be naturally interested in trying to prove thai the sluice gates were open, and there was no obstruction whatsoever in tho free flow 01 the water of river Golandi. In the second category fall 4 witnesses, viz., Lt. Col. S. K. Murthy, Sri Tulsi Sharma, Shri Rameswar Boro and Father John Thomas, who arc in no manner connected with the Irrigation Department but whose evidence lends to support its case. In the third category fall Sri Chandan Maitra, Sri Ramjit Murmoo, Sri Sabu Ram Basumatari, Sri Suphul Morandi, Sri Swarna Basumatari, Sri Tiken Basumatari, Sri Bipin Basumatari and Sri Ramdhari Chauhan, all resident of the locality excepting Sri Chandan Maitra. These witnesses have deposed to a state of things contrary to what has been deposed by the winesses of tn" first two categories.

Sri Hem Kanta Bora, Section Officer, Golandi Irrigation Headworks (W. No. 36) has stated that on 27th May '77, flow of water in river Golandi increased and that sluice gates were then completely opened and further that they remained so till the time of accident. He has also stated that he was in- formed that from the afternoon of 26th May, 1977, cultiva- tors would not be requiring water and the canal gates were, accordingly, closed and the main sluice gates opened.

Shri Shymal Chandra Das, and Sri Safed Ali, Khalasis. Golandi Irrigation headworks (W. No. 37 and 38) have stated that they were on duty at the headworks from the evening of 29th May, 1977, and that all the sluice gates were com- pletely open and the canal gates were closed.

Sri Tulsi Ram Sharma, a resident of village Thana Udal- guri (W. No. 45) has deposed that on 29th May 1977, while he was returning home from Ganiimuri village at about 3.30 p.ffL, he saw an the gates open. He could not say whether the gates were partially open or completely open, but was certain that water was flowing from, below the gates.

Siri Rameswar Boro, a resident of village Kathalguri (W, No, 46) has stated that he saw tho sluice gates at about 6,30 p.m. on 29th May, 1977, while returning home from Udalguri, and found them open. He could not give any idea of the number of gates open, but asserted that they were open. On the morning of 30th May, 1977, at about 4 a.m. he found that a lot of water had collected near his house, and he thereafter went to the gates again to ascertain if tha guide bunds of the Golandi Irrigation Scheme had collapsed. He, however, found that "all the gates were completely open and water flowing".

The gates were also seen by Father John Thomas of Catholic Church, Dhekiajnli (\V. No. 60) who has stated that about 6 p.m. on 29th May 1977 while he was going by car to Udalguri with Bishop Joseph Mittathany of Tezpur, the Bishop drew his attention to the gates and he saw that they were open. He could not say whether all of them were open, but he was sure that most of them wtre. The reason why Bishop Joseph Mittathany asked him to look towards the gates was that, according to what the Bishop told him, "usually gates were closed, but that day they were open".

Sri Ramjit Munnoo, a resident of village Kathalguri (W. No. 47) has stated that he used to go past the sluice gates everyday on his way to Udalguri, and that on 29th May 1977 he saw the gates at about 3,30 p.m. He found that 3 gates were half open and the rest were completely closed. He has further stated that out of the two canal's, the one on tha western side was flowing, but the one on the eastern side was not noticed by him. He had occasion to go to tho headworks again on the morning of 30th May 1977 and he saw that the western canal was closed and the sluice gates were open. According to him, one of the banks of the c;,nal on tho western side had collapsed.

The evidence of Sri Sabu Ram Basumatari. a resident of village Purani Happagaon (W. No. 49) is almost to the same effect. He hns stated that he saw the gates at about K p.m. on 29th May 1977 and found that 3 of them were half or<:ri and the rest were completely closed. The canal on the western side was flowing, whilo the one on the eastern side was closed.

rpAKT II—SEC. 3(M i ,78 THE GAZETTE OF INDIA: EXTRAORDINARY

Sri Suphul Morandi. Ambulance Car Driver, St. Joseph Hospital, Udalguri IW. Mo. 51), has deposed that on 29th May 1977, tit ubout mid-day, while going from Udal- guri to Tczpur, he saw the sluice gates clearly and found that some c! them were closed while others were either fully open or half open.

Sri Swarna Basumatari, a resident of village Kathalguri (W No. 53) has stated that he had occasion to go to the sluice gates on 29th May, 1977, and that 9 gates were completely closed and one was partly open. He lii'.s further stated that no water was flowing in the canal.

Sri Tiken Basuraatari, a resident of village Biligaon (W. No 55) has stated that he returned home from Udalgun at 9 p.m. on 29th May, 1977, and saw on the way, the sluice gates. 9 of which were completely closed and one was open by about half a foot.

Sri Bipin Chandra Basumatari, a resident of village Dakshin Kahiban lias stated that he saw the sluice gates at 6.30 p.m. in the evening of 29th May, 1977, while he wns going to meet Sri Lalji, Chowkidar of the Irrigation headworks, and observed that 8 of them were closed and 3 were open to the extent of 1-1 j feet from the bottom.

Sri Ramdhari Chauhan, a resident of village Kathaiguri (W. No. 58) has deposed that he had gone to the Irrigation headworks between 6 p.m. and 7 p.m. on 29th May, 1977, and ho saw 2 gates partially open and the rest completely closed. He found a little water flowing from below the partial- ly open gates. According to him, the eastern canal gates were closed "as usual", while the western canal was flowing.

Two occupants of the ill-fated train, viz. Lt. Col. S. K. Murthy, Officer Commanding, Eastern Store Division (W. No. 40) and Sri Chandan Maitra (W. No. 43) have also made statements relating to the matter under consideration. Lt. Col. S. K. Murthy has stated that he saw the sluice gates shortly after 3.15 a.m. on 30th May, 1977, and it "struck" him that "some of the gates were fully open and some were partially open and there was none absolutely closed". He was pointedly asked as to whether he was quite sure in his mind about having seen all the gates either completely or partially open and he emphatically answered that he was, adding however, lhat the extent to which the sluice gates were open was not uniform. It may be mentioned here that this evidence relates to a point of time after the accident.

Sri Chandan Maitra (W. No. 43), the other passenger, has stated that, after the accident, while he was on his way to Udalgun, sometime between 3.30 a.m. and 4 a.m., he saw the sluice gates to the south of river Golandi and noticed that all of them were closed. He stood near the bridgo for about 10 minutes and during that period he heard the sound of "sudden lush of water" through the bridge. He noticed that the level of the gates had been raised in the interval even though they were still touching the water.

I have left out of account, in this connection, the state- ments of Sri P. P. Kakati. Executive Engineer (Irrigation) (W. No. 34); Sri S. F. Zamnn. Sub Divisional Officer (Irri- gation) (W. No. 33) and Sri Damodur Boro (W. No, 52) who, according to their statements, had seen the gates late in the morning of 30th May, 1977, because of the state of things might easily have changed by that time.

For judging the reliability of the statements of witnesses mentioned above, it is necessary to note the conditions pre- vailing at the sluice gates and the afflux bunds after the accident, the evidence regarding which appears to be clear and incontrovertible. It is also at the same time necessary lo assess how much water flowed, through the sluice gates on the night in question.

Sri P. P. Kakati, Executive Engineer (Irrigation) (W. No. 34) has testified to the facts that he went to Golandi Irriga- tion hcadworks on the morning of 30th May, 1977, and found that no damage had occurred to any part of the head- works, i.e., to the wing walls, abutments, piers etc. or to the canal. Sri S. F. Zaman, Sub Divisional Officer (Irrigation) (W. No. 35) and Sri Hem Kanta Bora, Sectional Officer, Golandi Irrigation headworks (W. No, 36) have also corro- borated the statement of Sri P. P. Kakati. Sri V. S. Jafa, District Magistrate, Tezpur (W. No. 39) has stated that he had inspected the embankment of the headworks, after the accident, on 30th May, 1977, and had found no silting on them, nor did he find any signs of the water having overtop- ped the embankments or any damage or breaches having occurred. He has further slated that he did not see any such maik on the top of the sluice gates as might have been indicative of water having been blocked. The conditions of the headworks and the afflux bunds had also been seen after the accident, by several Engineers of the Railway, Sri P <"•• Gopalan, Chief Engineer (W. No. 32); Sri K. Surya- naJ.vnna, Additional Chief Engineer (Track) (W. No. 31) and i>ri S. R. Choudhury, P.A, to Chief Engineer (W. No. 25), have stated that there was no damage to the afflux bunds, Sri Suryanarayana has further stated that there was no damage even to the structure of the sluice gates. The facts observed by the witnesses were also observed by the learned Assessors during their local inspection on 18th luly, 1977, and are found mentioned in their report.

Now, as to the quantity of water that may be estimated to have flowed through the sluice gates on the night of the accident. The learned Assessors have calculated the discharge through the sluice gates on the night of 29/30th May, 1977, as 6500 cusecs. They have appended the details of their cal- culations regarding it as Annexure to their 'opinion'. The learned Assessors have further calculated that for this dis- charge of 6500 cusecs through the gates, the depth of water just upstream of the gates should have been 7 feet. The maximum depth of flow for a discharge of 7000 cusecs for which the hcadworks have been designed woul'd, according to the learned Assessors, have been 8 feet. Their ultimate con- clusion following from the above facts may be staled in their own words :

"This would indicate that all the gates were open at least by 7 feet if not to the furl height of 8'-6", Had they been substantially closed, the discharge passing through the gates and the Railway bridgo upstream would have been correspondingly less and so also the water levef upstream of the bridge for identical level at the gauge. Considering the factual position after the heavy Hoods, namely, no damage to afflux bunds, no damage to sluice gates and no damage to protection works, one cannot but con- clude that the gates were almqst fully open."

The learned Assessors are experts of repute and there ia no reason far not accepting the correctness of their calcula- tions and the results • arrived therefrom, particularly when there is no expert opinion in opposition.

On an examination of the evidence T find that the state- ments of the witnesses belonging to the first two categories are clear and consistent, and they do not suffer from any improbability. They are also in accord with the condition! prevailing at the sluice gates and the afflux bunds after the accident as also with the inspection report and 'Opinion' of the learned Assessors. On the other hand most of the wit- nesses of the third category contradict one another and their cvidence runs counter to what must, in my opinion, be ac- cepted as the correct situation of things at the sluice rates and the afflux bunds after the accident. The contradictions in the testimony of the witnesses of the third category may easily be seen from the substance of their statements given above. Tt is, however, not merely on account of such con- tradictions that their evidence has to be regarded as untrust- worthy or unacceptable, but essentially on account of the improbabilities - and other unsatisfactory features about it and, further, on account of its inconsistency with the observ- ed and almost incontrovertible facts,

Sri Ramjit Murmii (W. No. 47) has said that he sent a statement to the Commission about the condition of sluice gates on the night of 29th May 1977, and that the state- ment had been read out to him before ho affixed his thumb impression on it. He was, however, unable to say as to who wrote out the statement, and read it out to him This casts a substantial doubt on the fact whether the statement really emanated from him,

Sri Sabu Ram Basumatari (W. No. 49) has said that he had sent a statement to the Commission written by somebody else, but he too like Sri Ramjit Murmu (W No. 47) did not know who had written it out. He has also said that the state- ment was not read out to him and that onfy his signature was taken thereon. His answer to the question as to whether h" knew the contents of the statement was clearly in the nena-

ZrttfASSoS?statement of thls witness caMot *

1179

As stated at an earlier stage of the discussion of evidence Sri Sabu Ram Basumatari claimed to have seen the sluice gates at about 8.00 p m. on 29th May 1977, while returning home from Udalguri. He has, however, admitted that at that time, "it was very dark and raining heavily". The manner in which he claims to have looked at the gates appears to be very unnatural and artificial. He stated that he and his com- panions examined each of the 10 gates as they passed along them by focussing their torch-li^ht at every gate, I find myself unable to place reliance on his evidence or to accept it in preference to the evidence of the v.itnestes in the fir=t and the second category.

The evidence of Sri Sw..rna Basumatari (W. No. 53) is that he had gone to th; sluice gates between 5.30 p.m. and 6.00. p.m. on 29th May 1977, for catching fish. Strange.'y enough, he never went there, according to his statement, for fishing except on that date. That mates his visit to the sluice gates very doubtful and unconvincing.

Sri Tiken Basumatari (W. No, 55) claims, to have seen the gates while he was returning home at about 9.00 p.m. on 29th May 1977, after seeing a cinema bhow. He admits that it was raining very heavily <:.' that time and his stay at the gates was only for 5 minutes. When questioned as to how- he managed to notice the sluice gates in the J^r'^ness, his ans- wer was that there was a momentary flash of lightening that enabled him to do so. I need only say that I do not find this evidence worthy of reliance.

The evidence of Sri Bipin Chandia Basumatari (W. No. 56) has only to be read to be rejected. He has stated th it he saw the sluice gates at about 6.30 p.m. on 29th May, 1977, when he went to Sri Lalji, Chowkidar of the sluice gate^ for borrowing some money, Rs. 5—10, for purchasing some quantity of rice for domestic iss as his stock of rice had fallen short of his need. He could not, however, meet Sri Lalji, as the latter was not present at Ms residence and he returned home straightaway. He admitted that he did not then, actually borrow money from Sri Lalji. His initial statement was that he wanted to purchase some sundry articles with the money borrowed from Sri Lalji, but he made the statement definite later by saying that he wanted to purchase rice. He has admitted that there are about lf>0— 200 inhabitants in his village, but it is strange tht,t he did not borrow the money in the village although, according to his statement, he had been doing so in the past, and went to Sri Lalji at the si'uicc gates for doing so. What make the story of thL witness absolutely unacceptable is the fact that he was not able to give the name of the village in which Sri Lalji resides or its distance from his own village.

The evidence of Sri Ramdhari Chauhan (W. No. 58) is that very shoitfy after the accident, while he was proceeding towards bridge No. 141 he saw from the road bridge on river Golandi that 5-6 men were "engaged in opening the sluice gates". He wants to make out that the sluice, gates were opened after the accident. It has to be remembered that the distance between the road and the sluice gates is 178.40 metres as appeals from the plan (Ex. 17). It is not possible to believe that he could have seen the sluice gates being opened or the number of men engaged in opening them in the darkness pervading at that time. He has a'so stated that the opening of the sluice gates was being done by "babus" and further that there are no Khafosis at all at the sluice gates. This makes his statement unworthy of credit. It clearly appears from the evidence of Sri P. P. Kakati, Executive Engineer (Irrigation) (W. No. 34) and the mujter- rolls produced by him that there are 7 Khalasis posted at the Irrigation headworks and it cannot be accepted that these Khalasis took no part at all in the opening of the sluice gates and only "babus" were manipulating it at the alleged time. The witness has gone to* the length of saying that there were signs of water having flowed on the top of the embankment on the night of the accident and some twigs were lying on the bund. This statement is obviously belied by the inspection notes of -the learned Assessors, apart from being contrary to the evidence of Sri P. P. Kakati, Executive Engineer (Irrigation) (W. No. 34), Sri S. F. Zanian, SDO (Irrigation) (W. No. 35), Sri V. S. lafa, District Magistrate, Tezpur (W. No. 38), Sri P. G. Gopalan, Chief Engineer (W. No. 32), Sri K. Suryanarayana, Additional ChLf Engi- neer (Track) (W. No. 31) and Sri S. R. Choudhury, PA to Chief Engineer (W. No. 25). I have no hesitation in dis- carding the evidence of this witness.

Sri Chandan Moitra (W. No. 43), one of the occupants of the train which met with the accident in question had filed a statement before the Commission in response to the general notification issued by it. He had stated therein thai he had seen the sluice gates at about 3.30 a.m. on 30th May 1977, ana had found them closed. In his evidence bsfoic the Commission, however, he kept on vacillating in nis mind aua changing his statement fioni time to time and ills statement has only to be read for appreciating how difficult he found to stick to any clear and consistent posi- tion. '$ he position that he finally took may be gathered fiOiii a few qu;sli3ns and their answers towards the end of his statement and they are being reproduced below :

"Q. Is it possible that you are mistaken and all the gates were partially ciosed or some of them were completely open when you first saw them ?

Aiih. There was no possibility of mistake because I had been towards the front of water. I am not sure whether the gates were open or ciosed. I drew my inference on the basis of the flow of water.

Q. Was the water still flowing ?

Anb. X'he water wa" still flowing.

ij. in your siatcment iiled before the Commission you said that you saw the sluice gates were closed when you saw them'at 3.30 a.m. on 30th May 1977. Now you say that you inferred this from the flow of water. Which state- ment is correct ?

Ans. What I said today is correct, li appears to me that the man who typed my statement for filing before the Com- mhsicn had done it wrongly or might have translated incor- rectly. I dictated in Bengali language to the person who typed iny statement in English. I know English. I also understand English. The statement might have been wrongly typed by the person who typed it. "It was typed by Sri Baiehand (Marwari Chap)." Evidently his statement cannot be safely made the basis for any finding.

The last witness in the third category is Sri Suphul Moiandi (W. No. 51). He claims to have seen the gates at about mid-day on 29th May, 1977 from the PWD road to the south oi bridge No. 139, while he was driving the ambulance car of St. Joseph's Hospital, and to have noticed that some of them were fully closed tuid some were in luily open or haii opsn condition. Obviously, he could hays had only a fleeting glimpse and that too was much before the accident. His statement, therefore, does not appear to me to be helpful in determining the question luider controversy.

The evidence relating to the question with which I have been presently dealing may now be summed up. A number of witneFiej have come and clearly deposed that the sluice gates wers open. Their statements do not disclose any infirmly or any ground for holding that they are not worthy of reliance. The statements of all the witnesses who have tried to establish that the sluice gates were closed have been shown to be improbable and the accounts given by them unnatural and unconvincing. Further, the condition of the Golandi Irrigation headworks and the afflux bunds <

I nvist state that the employees of the Irrigation depart- ment, despite being speciPcaliy questioned to that effect, could not assign any reason why the witnesses of the third category -.vere insisting on saying that the sluice gates were either partially or wholly closed. No such reason "was forth- comine from any other quarter as well. Tn view of the fact that fi" evidence of the witness of this categorv is inherently upsatisfacfoiy ;>nd untrustworthy, and is opposed to the facts ocfnaUv observed at the sluice gates by trustworthy witnesses, an

CONCLUSION

J may now summarise my conclusions in regard to the questions formulated at the outset. The engine of 1J Up lezpur Expre:>s of 2ytn May, 1977, was in good working older on its rnn Irom Riingiya to Tezpur. Proper 'line clear' had been obtained for the passage of this train bet- ween Udalguri and Rowta Bugcui stations between which bridge No. 141 Tails, The train was also running within permissible speed limits. The accident, cannot, ihereioic, be said to be attributable to anything wrong with the engine or the working ol" the train or its speed. Patrolling and inspection of track were being done properly and the bridges on the track were aLso being duly inspected, checked and maintained. No fault can, therefore, be found with the Railway on this score. There did exist an arrangement lor receipt of weather warning or weather forecasts by the Railway but no such warning or forecast requiring special s.teps to be taken by the Railway or special watchfulness Co be kept in regard to the running of trains had been received for 29th May, iy/7. In this respect too, no blame can be said to attach to the Railway. Bridge No. J41 had been constructed according to the prescribed standards and there is satisfactory evidence to show that it was safe and sound. The bridge also provided for adequate waterway. As such, collapse, of the bridge was not due to any constructional defect in it or to inadequacy of waterway provided by it. The rivulet Bcki nala over which bridge No. 141 had been constructed is a very small and shallow stream with a catch- ment of only 1.1 square miles and having its source in the paddy fields around it. The intense and concentitfted rainfall in the upper reaches of river Golandi, which has its source in Bhutan hills, caused a devastating and unanti- cipated flood in the river and that led to

The conclusion necessarily is that the accident was not due to any 'human failure' cither on the part of the Railway or any other Department of the Government or any other person, i.e. not due to any cause for which the Railway or any other Department of tho Government or any other person can be said to have been responsible. It was really due to causes which reasonable human care and foresight could not have averted. It is true that care and foresight expected in an act or undertaking should be commensurate with its risks. But there are reasonable limits to such care and foresight, and sometimes happenings like the accident in question aro not preceded by any forebodings and evado human calculations. The accident in question was, in my opinion, an inevitable accident'. The proper connotation of the above expression in relation to negligence has been stated in Halsbury's 'Laws of England', Second Edition, Volume 28, page 80 as follows :—

"85. Meaning of inevitable accident—An accident is, for present purposes, inevitable if it could not have been obviated by any ordinary care, caution, and skill on the part of the party charged. Where an inevit- able accident is due, directly and exclusively and without human intervention, to natural causes against which no human foresight could provide, it is termed an net of God.

Extraordinary skill and diligence aro in ordinary circumstances not required to be exercised. If the defendant shows that the accident occurred not- withstanding the exercise of ordinary care nnd skill on his part, the accident may be held inevitable, The degree of care required is proportioned lo tho degree of risk involved."

I may also refer here to the meaning of the expression 'Act of God' as given in P. Ramanatha Aiyar's "Law Lexi- con". It states—

"Act of God. Vis Major, It may be defined to be any accident, due directly and exclusively to natural causes without human intervention, which by no amount of foresight, pains or care, reasonably to have been exported, could have been prevented. The general characteristics of such perils are very •ntelligible. L.R.I.C.P.D. 423.

The earliest use of the term "Act of God" in English law is by Sir Edward Coke. He used the phrase, Lthc Act of God excu-scs,' as equivalent to an acci- dent which is 'so inevitable that, by no providence or industry of him who is bound, it can be pre- vented or, as in Shelley's case, I Coke 97-b 'which no industry' could avoid, nor policy prevent'.

Cut it does not neccssari'y mean an operation of natural forets, so violent ami unexpected that no h'-;nan foresight or skill could possibly have proven .-• its tricots'. It is enough that the accident shoir 1 be such as human t'oiciisht could not be reasonably expected to anticipate. (Per Curiain in Nichols v. MiiisliivtJ, 2 Ex. D. 1). In order that an extra- ordinary natural event such as a very high tide, >houid be, in the legal sense of the words, an (Act of God, it is not necessary that such an event should never have happened before. Tt is sufficient that its happening could not have been reasonably expected. If such an event has happened once, but there is nothing to lead to the inrerene • that it is likely to recur, it docs not, if it happen:, a second tini;, cease to be an Act of God."

On a close scrutiny of the evidence and on a careful exami •• ifion of the circumstances attending the accident I am clearly of opinion that it was an "Act of God".

SAI'KGUARDS AGAINST SIMILAR ACCIDENTS

1 may now make some suggestions regarding safeguards

against similar accidents in future.

1. Bridge No. 141 gavo way as a result of the impact of the heavy Hood under and around it on the night of the accident. Howsoever unanticipated and unforscenable the magnitude of the flood might have been, it should be taken into account in the reconstruction of the bridge nnd a complete review should be made of its design.

2. The flood potential of river Golandi has increased manifold since tho construction of RaiAvay bridge No. 139 in 1955-56. Tho river hois now a history of overflowing its banks. It is necessary, therefore, to completely review (he design of the bridge and make such changes as limy bo thought necessary.

3. In view of the changed history of river Golandi, tho Golandi irrigation hentlworks should be re-designed ufter a thorough hydrological survey.

4. The desirability of providing marginal bunds on either side of river Golandi upstream of the Railway bridge No. 139 should be examined.

5. Suggestions Nos. 1, 2, 3 and 4 should be examined by the Stale Committee of Engineers, in close co-ordination with various concerned departments.

6. In reviewing the bridges and in other matters pertaining to them, attsn'.ion should not be confined to bridge No, 141 which, collapsed or to bridge No. 139 below which river Golundi flows, but should cover all other bridges of the I'angiyu—R"ngapi;rn North section, three of which viz., bridges No. 1.14, 125 and 145 also suffered heavy damage on the night of the accident.

7. A closer and a more meaningful contact should be established and maintained between the Railway and the Meteorological Department for the timely and correct trans- mission of heavy rainfall warnings and weather forcasts. S'teps should also be taken by the Meteorological Depart- ment for the installation of self-recording rain gauges.

8. Golandi Irrigation Scheme which had not hitherto been classified as a 'Railway affecting work' should now be classi- fied as such. Sii A.R.S- Rao, .Adduional Chief Engineer (Bridges) who initially stated In his evidence before tho Commission that the opening, or closing of the sluice gates would havo no effect at bridge No. 139, ultimately conceded (hat "closure of the sluice gates will have some effect on the track", and thai "the closing or opening of sluice gates will have a repercussion upon the conditions prevailing at bridge No. 139 during floods'', There can be no doubt that'the sluice gates are 'Railway affecting works' and they should be treated aa such.

9. The rivers in the Rungiyn-Rangupara North section should be consideiMi as subject to sudden and abnormal ll'idHr. They slv.iu'fl, therefore, be classified as 'flashy' and the bridges constructed over them as 'vulnerable bridges'. t Naturally, the system of v/ntch obtaining in regard to bridges' regarded as 'vulnerable' should be extended to them.

1181

lf>! While considerations of practicability cannot be igno- red and no system of patrolling can be a (juaran'ee ugainst all accidents, I think that, in view of the history of biidges in this section now, the monsoon patrolling should be made more intensive.

11. In view of the fact that river Golandi and other rivers over which bridges have been constructed in the Rnn^iya- Rangapara North section have their source in Bhutan hills and heavy rainfall there would naturally have its repercussion on the bridges over these rivers a system of co-ordination between the Meteorological department of India and Bhulan should be devised and established.

ACKNOWLEDGEMENTS

Before closing the Report 1 must acknowledge my grul:- fulness to persons whose advice and assistance has helped me in the discharge of my function.

First of all, I must express my deep thankfulness to the learned Assessors, Sri M. N. Jathal, Retired Chief Engineer (Irrigation), Government of Gujarat and Sri Kali Ctiaran, Retired General Manager (Construction), Indian Railways, for the very valuable advice and assistance that 1 received from them throughout. Their knowledge of technical matters involved in the inquiry and their engineering experience ha- been of immense help to me.

I owe a debt of gratitude to the Hon'ble the Chief Justice of the Gauhati High Court for permitting me to avail of the services of a translator of the High Court, Sri M. Uniar, who acted as an interpreter before the Commission at tha time of the recording of the evidence and performed his function very efficiently,

I am especially grateful to Sri Raiendia NaLh, Deputy General Manager (General), N, F. Railway, the very able, conscientious and painstaking Secretary of the Commission for his devoted and indefatigable labours. He familiarised himself thoroughly with all matters pertaining to the inquiry and kept himself fully conversant with the entire evidence produced before the Commission. His services were parti- cularly useful to me in the appreciation of technical questions.

I must also express my sense of thankfulness to Sri K. B. Bhatnagar, the Reader of the Commission, Sri K. K. R. Pillei, Confidential Assistant, Sri K. Sreekumr.ran and Sri A. K. Chatteriee Confidential Stenographers nn<1 Sri \J R. Niba, Head Clerk for their unstinted, faithful and efficient assis- tance. Tydeed, withon* their hard wort ami co-opcn-Hon. the smooth and expeditious working that the ComnMsFlon has had would have been difficult.

ALLAHABAD, September 7, 1977.

GANGFSHWAR PR A SAD, Member Commission of Inquiry.

ASSESSORS' OPINION

ACCIDENT TO TEZPTJR FXPRFSS TR ATN AT BRTDGF NO. 141 ON 30 5-1977 (UDALOLJRT-ROWTA PAGAN

SECTION)

1. The Accident

i A\ °£ t he m o r r'nS of 30-5-77 at about 01.25 hours

• / V TL ^ p L lr E/ Pr e M' w h i c F" l cft U d a l g u ri R a i l w ay S t a t i on

M V /i ?? af!?I,',''! s,c h e d u 1e stoppage, derailed over bridge No. 141 at km 64/11-12 between Udalguri and Rowta Ba- gan Stations of Ran"iya-P.aneanara North section of All- purduar Division of Northeast Frontier Railway. The Rowta Bagan abutment of the bridge alongwith Its eastern approach Jin,.! b"™ washed awny earlier by the flood waters The sue of accident is obout 3 km cast of Udalguri Railway Station.

]° d°r n i I m e n t- the engine and the fiJt2f^8 \ r elU lt ?f,,th coach, with its rear bogie on the Udalgnri abutment was left leaning with its leading portion under water The rot of the train remained on mils.

2 Ra.'fivay Allcnment and Loca! Conditions

the north of the river Brahmaputra. The Railway Divisional Headquarters for this section of the railway line is situated :u AHpurduar Junction at a distance of 284 km from the site of the accident. The Railway Control Office is situated at Rangapara North Railway Station which is about 60 km from the site of the accident.

2.2 Bridge No. 141 was a 1X12.2 m Girder bridge with buried abutments (Ex. 22) built in 1946, replacing an existing oile bridge of 2X6.0 m Girders (Ex. 25). In 1963-64 the 1?,.2 m girder was replaced by a Metre Gauge Main Line standard Girder of the same length and the rail level was raised by 0.686 m to provide 0.61 m clearance above H.F.L. (Ex.23).

2.3 The alignment of the track at this kilomctrage 64/11-12, runs generally from west to east. The alignment at the bridge No. 141 is straight almost parallel to the Bhu- tan hill ranges. The approaches to the bridge are level for a disinrce of 61 m on either side. There is a rising gra- dient of 1 in 200 towards the bridge forftlength of about 147.5 m towards Udalguri and a falling gradient of 1 in 200 for a distance of about 433 m towards Rowtabagan, the bridge being at a higher level than the approaches (Ex. 24). The height of railway embankment i.e. height upto the for- mation of the railway track from the ground level varies from 1.7 m to 3.31 m, the maximum being at the site of the accident (Ex. 23, 25 and 24.)

2.4 Bridge No. 139, with 2X 10.7m + IX 18.3m gliders (Ex, 36) is situated roughly 3/4 km towards UdaJgun from !vii!ge No. 141. The bridge originally consisted of 3X6.1m girders (Ex. 35) on wooden piles which was replaced In 1955 56 by the pre.ent bridge. The existing bridge haa it* piers on wells 12.2m deep and abutments on RCC piles. Tho bridge has "Bell" type guide bunds, with their sloopes pitched with boulders. The river Golandi (Topo sheets No. 83 /B,' 1 and 83/B/2—-Ex. 55/1 and 55/2) crosses (he railway line through this bridge No. 139. The Golandi Irrigation Schem* headwovks (Ex. 59) are locked about 230 m down stream of this bridge. These consist of a weir (barrage) with its crest at bed levsl and ten sluice gates of 3.05m width end 2.60m height. Two canals take off from this weir, one from either bank. These pates can be lifted as and when required by means of a hoisting mechanism manually opera- ted and are controlled by the P.W.D. Irrigation Department of the Government of Assam.

2.5 A P.W.D. road runs south of the railway track. ThJi road runs almost parallel to the railway line, its distanco from the centre of the railway line being 51m at bridge No. 139 and about 40m at bridge No. 141. This road has brldgei corresponding to bridge Nos. 139 and 141. It crosses the railway track by a 'C class single manned level crossing No. 41 RM(C) about 0,25km from bridge No. 141 towardi Rowta Bagan.

2.6 Kilometres of various places referred to herein "r" measured from the centre line of Rangiya Junction station and relevant kilometrages arc as under :—

Increasing in the direction of tho

km 00.00 " 61.00 63/15-16 64/11-12

• movement

of the train.

Rangiya Jn. Udalguri Bridge No. 139 Bridge No. 141 Level Crossing No. 41 RM(Q Rowtabagan Majbat Rangapara North

65/1-2 73.00 82 00 123.00

J. River C o me and its Catchment

3.1 Bridge No. 141 is built across a small channel or stream known as Kahinala or Beki. The source of Beki is about two and a half kilometres to the north of the railway lino (Ex. 41), The stream drains a small local catchment com- prising paddy fields. Since a very substantial proportion of the discharge that passed through bridge No. 141 on the fate- ful day was due to a massive spill from the left bank of the river Golandi (Ex. 27) and since Beki's own contribution to this discharge was quite negligible in comparison, it is hardly worthwhile to determine the catchment area of Beki and to compute its exclusive contribution, The Railway had fixed its catchment area initially as l.t sq. miles which was later modifier! to 0.34 sq. mile (Ex. 42), Perhaps it Is not possi- ble to mark it accurately, ns there is hardly any distinct

1182 THE GAZETTE OF INDTA : EXTRAORDINARY [PART II—SEC. 3(ii)]

water shed line separating field's catchment from that of Goltndi.

3.2 The river Golandi emanates from the bills in Bhutan, Its catchment area was delineated by the Railway initially from the old topo sheet ns 11.6 sq. miles which was subse- quently modified to 20 sq. miles (Ex. 42). This is based on the latest topo sheet Nos. 83 B/l and 83 B/2 surveyed in 195^-60 ;

3.3 The maximum width of the catchment of river Golandi is 3-5 kms. but its normal width varies from 2-3 kms. Tn the immediate vicinity of the bridge the bed siono oT the river Golandi varies from 1 in 225 to 1 in 250. The bed material consists of an admixture of fine sand and silt. There is cultivated land on both the banks. There is a good deal of habitation and there are H number of village/hamlets on either of its banks. On the hills there are dense mixed forests. At the foot of hills and at nlaces on the plain, there are patches of open mixed jungle. The stream has defined banks but is quite shallow in denth. A cross section 400 metre upstream of the bridge No. 139 shows the .width of stream as 100 m and height of banks as 0.75 m. A cross section 500 m upstream gives the width as 115 m and maxi- mum denth fin 0.66 rr. The extent of spill here was found to the little over a metre in depth.

4 Rainfall and Floods

4.1 There r.re neither fclf-recording nor ordinary rain Ranges in the catchment of the river Golandi. There is, however, one rain gauge just downstream of the bridge No. 139 at the Golandi Irrigation Headwnrks maintained by the Irrigi me fit Maibit and Tirijr'a, which are respectively 18 km to the east and 26 km to _ the west of Golandi, The rainfall records of these three stations for the months of April and May, 1977 are (riven in Ex. :

61 and 67, The daily rainfall for the period 28th Mav. 1977 lo 31st May, 1977 are expected below :—

Dale Rain fall in 24 hours onding at 0830 hrs.

IS 1 at

Golundi Irri- gation Head- works (Ex : 61)

Majbat (I.M.D.) (Ex : 67)

Tangla (I.M.D.) (Ex : 67)

28-5-77 29-5-77

32.0 mm 30.0 mm 120.0 mm

01.2 mm 56.6 mm 39,5 mm 133.1 mm

07.2 mm 92.2 mm 196.4 mm 77.2 mm

30-5-77 31-5-77

4.2 Oral evidence reveals that there was intermittent light to heavy rain from 6 P.M. onwards on 29-5-77. Bulk of rain, therefore, must have been registered after 6 P.M. on 29-5-77. Compared to previous records, railfall in the area in the immediate vicinity of the railway line cannot be, however, uaid to be abnormal during the relevant period. Although it was raining on the day of accident and from u P.M. onwards on the 29 Ji of May it is clear from I he above rainfall figures that rainfall of the above order in the catchment of Golandi could not have caused the Pood of the magnitude that occured in Golandi. As regards the upper catchment lying in Bhutan, two local residents, ous f:om village Diapham and the other from village Golandi doposcd io the effect ihal it was raining from 6 P.M. on Sunday, the 29th May, 1977 and there was a heavy torrential downpour from 11 P.M. to about midnight, accompanied by thunder (Witness Nos. 21 & 22). Judging from lh" magnitude of the flood and the above oral evidence one cannot escape from the conclusion that there must have been a very heavy and sudden downpour in the hills in Bhutan territory towards midnight which gave rise to a catastrophic and flash flood in Golandi river. The sudden diversion of a Irirge pro|::jr;ion of discharge from Khaurang Nadi into Golandi, helped to worsen the situation. It has been aftcr- w; ]J:;.' ascertain?!.! from the topographical map that the catchment area of river Khaurang upto its junction with Golandi is 11 sq. miles, This is in no way less than the catchment area of Golandi upto that point. In this reach wilh a heavy precipitation on the hills and with the sudden diversion of discharge from Khaurang Nadi of almost equal magnitude, the river Golandi had a flash flood, the equal of which had not been recorded at the railway bridges nor did the local inhabitants recollect having experienced such a deluge, It is not beyond the realm of possibility that the sudden and v?ry massive hill glide on the right side of Khau- liing N. radically aJlcrcd Ihe pattern of stream flow and might have even impounded the flood water which later got suddenly released and helped in causing a sudden flash flood in Golandi.

4.3 The Railway has marked and painted the H.F.L.'s attained during 1977 flood on the basis of the tell-tale marks left by the flood water, floating vegetation and silt. Th" report i.iibniitod by the Chief Engineer gives the reduced levels of various Dertinent points, The highest flood level attained at bridge No. 139. was upto the top of the guide bunds, against the previously recorded flood level which was about 0.76 m (2.48 .) below the 1977 flood level. The highest flood level or. the night of 29/30 5.77m at bridge No. 141 was almost upto the formation level i.e. about 4-J-" below the top of the girder against the previously recorded H.F.I.. of about 2' below 'he bottom of girder i.e. about 6' below the 1977 flood. As a result of this very high flood the river Golandi overflowed its banks, mainly on the left bank but there was some spill on the right bank also. The rate of inflow being far in excess of the discharging capacity of bridge Nos. 139 and 141, the flood water headed up, the spills from the left bank of river Golandi flooding the area enclosed by the railwav track on the south, the PWD road on the east •••".d the s'oping flood plune of Golandi towards the north for a considerable distance thereby forming a large reservior. The depth of the water so held up varied place to place attaining its maximum depth at about 1 A.M. or so. i.e. at the point of. time when the breach might have nc'uullv rvc-iired, rfl'orditiR sudden re1?ef to the ponded v/ater, The details furnished (Ex : 48) on the basis of the contour plan, show ihut the pond covered an area of about 1.31 sq. kms holding up about 1.755 m cu. m. (62 m cu. ft.) of \v:'.;c!\ This gives an average depth of 1.34 m. Some water

1183

did spill further towards the east, causing serious damage to bridge No. 145 (both its approaches were washed away and one abutment collapsed completely, one pier also col- lapsed, other abutment leaned). The flood water caused heavy damage also to the P.W.D, road on the east of bridge No. 141 which was breached in a lenRth of about 208 m. The natural slope of the pround from upstream of bridge N'1 139 being towards bridge No. 141, the spill water of Golandl naturally got concentartcd and flowed towards bridge No. 141,

4.4 The spilling, however, was not limited to the eastern side, but it also took place towards the western side and due to sudden and heavy on rush of water bridge No. 125 got seriously damaged.

4,000 cusecs through bridge No. 141

9,000 cusecs (b) (c) (d)

5,500 cusccs excess flow (take) balance overflowing the PWD road

Total = 25,000 cusecs 25,000 cusecs

4.8 The figures given in paras 4.6 and 4.7 differ from those worked out 1by the Railway (Ex ; 43, 44, 46 to 48) and by the Chairman, Brahmaputra Flood Control Commission (Ex. : 77). The difference is mainly due to the following inaccuracies creeping in their calculations.

(i) Assuming the flood slope same as the bed slope of the channel upstream in the Manning's formula in estimating the discharge through the bridge openings. This will be correct only if the channel is uniform in section and passes befow the bridge unobstructed, i.e., there is no construction. Indirectly, it will mean that there is no afflux at the bridge, the only fall being that equivalent to the surface fall in the width of the bridge. Such is evidently not the case as at bridge openings there is a construction and a resulting afflux, Besides, the flood slope was certainly much flatter than the bed slope of the chan- nel as could be worked out from the flood levels attained at various points.

(ii) Neglecting on while working out the discharge through

bridge opening by afflux formula.

i.

Sl, No

(0

H S4

T HE G A Z E T TE OF I N D TA • E X T R A O R D I N A RY

[ P A RT I I — S E C. 3 ( ii 1

scour actually attained canno: bear nny relation to the scour that might develop on a pitched floor. All these years since the construction of the bridge, only petty re- pairs had been done to the floor and *l"pc nitching find this was normal routine maintenance, The boulder floor is meant to prevent formation of any scour in front of the abutment and was quite adequate for the purpose.

5.4 Structurally the bridge was quite sound nnd was in a good condition us indicated by the inspection nolcs in the bridge book.

5.5 We do find that the breach behind the abutment of bridge No. 14t, occurred due to highly oblique flow of the massive spill from the adjor.iing river Golandi, which attack- ed the Rangapara North approach bank of bridge No. 141. This spill was due to a very abnormal flood in the river Golandi caused by a very heavy and intensive rainfall in the hills in Bhutan and due to a sudden diversion of the entire Khaurang Nadi into Golandi, just at the foot of the hills. That the high flood level at bridge No. 139 on 30-5-1977 was unprecedented is indicated by the fact thnf it was higher than he previous flood by 2.48'.

5.6 The sudden diversion of almost the entire flow of the Khaurang Nadi into Golandi through the connecting channel which was enlarged to a widlh of about 100 metres wag a development which could not have been reasonably foreseen. The Railway cannot be expected to nor are they duty bound to mate provision for such additional and abnormal discharges due to this type of unexpected develop- ments. We do not, therefore, hold any of the Railway offi- cials resposiblo in this respect. This may be taken as "an act of God".

6. Vulnerable Bridge*

6.1 Prior to commencement of every monsoon vulnerable bridges and kilometrages are decided upon conjoin fly by the ^Divisional Engineer and the Assistant Engineers of the division. Shri A, K. Biswas, Divisional Engineer/ITI/Alipur- duar Junction (Witness No. 27) deposed in this respect that the list was prepared in consultation with the Assistant Engineers, He listed the following bridges in Rangiya— Rangapara North section as vulnerable :-—

(i) Barolia bridge No. 2 RT (Ix 18.28m) at km 2/4-5;

(ii) Bridge No. 94 RT (2x11.28m) at km 52/5-6;

(iii) Dhansiri bridge No. 174 RT (2x 12.Sm—3 x 45.72m)

fit km 74/4-9;

(iv) Bridge No. 269 RT (2x 0.609m) at km 104/9-10;

(v) Cabru bridge No. 305 RT (2x 45.72m) at km

116/7-8.

Shri A. R. S. Rao, Additional Chief Engineer/Bridge (Witness No. 29) filed true copies of Ihe review of bridges recorded in the file in respect of bridge Nos. 139, 140 and 141. Accordingtothis review, bridge No. 139 wns classi- fied as vulnerable, but this classification was later modified as stated by Shri Biswas, Divisional Engineer Witness No. 27). Even if this bridge had been classified as vulner- able by the Railway, the results would not have been differ- ent, as the Railway was preparing to post watchmen at vulnerable bridges only from tru first of June, i.e., along wilh the monsoon patrolling.

6.2 The Railway considers a bridge as vulnerable if it has a 'history*. As to what connotation it implies to 'history' is not very clear; as although according to the statements bridge Nos. 91 and 145 had been giving trouble, these were not included in tho list of vulnerable bridges. The Railway had also not classified bridge No. 114 at Km 56/3-4 (Khaga river) between Harisingha and Udalguri as vulnerable, This bridge got breached this year. Similarly although the abut- ment and wings of bridge No, 125 at Km 59/10-11 settled this year it is not in the list of vulnerable bridges. No blame can lie on tie Divisional Engineer or the Assislani Engineer for not listing bridges in such category affected by tiiis year flood or any other bridge whatsoever. However, in view of" what has hnppened, th" Railway will be well advised to thoroughly revise its list of vulnerable bridges and vulnerable kilometerages. The Rniiwny should modify its criteria for vulnerability nnd besides (hose bridges that have given trouble in the past resuitinR in intcrrup'ion 1O traffic," all such other bridges as are across flashy streams and/or have experienced heavy afflux resulting in high velo- cities, should also be included in this category. The P.W.I. (Witness No. 14) deposed that he had made all preparations to post watchmen all throughout the 24 hours on the vulnerable bridges and that three wat'hmen had been ear- marked for each of the vulnerable bridges in his section. The Railway was thus in reudincss to post watchmen on and from 1:6-1977. However, in view of this year's experi- ence, the Railway should hereafter arrange to provide a continuous watch on vulnerable bridges on and from 21st May. i.e., along with the revised date for patrolling as recom- mended in para 7.5,

6.3 Danger Levd"

According to appendix to Chapter X, the Indian Railway Way and Works Manual every bridge must have "Danger Level" distinctly painted on its abutment or pier. This has been done as per rules. In the case of flashy streams, how- ever, this provision servei little purpose. These levels indicate that if and when the water level reaches this mark the safety of the bridge is likely to be adversely affected and all traffic may need to be suspended. In case of flashy streams, as the name implies, the flood levels rise suddenly, and in a matter of two or three hours it may rise by a metro or two. In such a case even though the bridge may have been inspected a few hours earlier, the staff incharge of maintenance even with the best of intentions, will not be able to initiate any action, has happened in the present case. The PWI (Witness No. 14) did inspect bridge No. 141, between 8.30 p.m. and 9 p.m. and observed that the water level was one metre bcTow the danger level, but about four hours later the flood level shot up to about 2 metres higher than the danger level. In such sections, absolute safety may not perhaps be possible to be achieved but para 1702 of the Indian Railway Way and Works Manual should be modified to have an additional: provision that during sudden abnormal rain or on receipt of a heavy rainfall warning from the I.M.D., the mate should post gangmen as watchmen at each, of such/ flashy streams. The Railway should first ascertain and determine as to which streams are flashy in nature and are likely to rise suddently. The Railway ought to also provide warning boards to enable the drivers to approach such streams very cautioauly during heavy rains and floods. Theses bridges, as stated earlier, ought to be included in the list of vulnerable bridges. Dunns monsoon a constant and continuous watch should be kept on such bridges,

7. Pafrollfaig

7.1 In the event of a sudden severe storm or hurricane occurring during the day or the night, the mate should on his own initiative, organise patrolling over the length affect- ed, Independent of any other partoiling being done. In the case of heavy rainfall this patrol should confine its inspec- tion to known points of danger. The mates of gang No. 10 and 11, in their judgment did not consider the rainfall on 29-5-1977 to be so severe upto 9 p.m. as to call for the above type of patrolling. Heavy rainfall, however, is re- ported to have started after they went to sleep, i.e., after about 9 p.m. All the same, when mate of gang No. 10, realised on waking up that there had been heavy downpour, he himself went to examine bridge No. 124, the only known point of danger and after he returned from bridge No. 124, he learnt about the accident. Gangraatc of Gang No. 11 was directed by the PWI through his head trolleyman to arrange to have a look at bridge No. 145. This mate also arranged an examination of bridge No. 145, by two of his gangmen. These being the only known points of danger, were examined by the concerned mates. There is thus no doubt that they faithfully discharged their duties,

7.2 Heavy rainfall and weather warning messages arc received by the Railway from the Meteorological centres- Calcutta and Gauhati. In this case the last heavy rainfall warning for (his area was received as stated by the Asstt Engineer (Witness No. 26) on 7-5-77. It is noted that

1185

Iilihough 1 (i.e., on the day he was questioned viz. 8-8-1977), he would not ibsuc heavy rainfall warnings to Railways with his 16 years of forecasting experience. He further stated that he had doubts about the rainfall recorded at Majbat on 30th May und that the initial telegram indicated the rainfall at Maj- bat as only 54 mm. He also explained that there had been cases when forecast did not tally with Ihc actual iain.

7.3 It is unfortunate that the meteorological conditions as then prevailing did not warrant an issue of a warning for the heavy rainfall on 29-5-77/30-5-77 which happened to be the fateful night of Ihe fatal accident. Be it as it may, if a heavy rainfall warning were issued to the Railway on the 29th May the Railway in all probability would have introduced patrolling and there was n chance of averting tho accident.

7.4 The Railway has a system of patrolling the track during monsoon. Accordingly all preparations were made and monsoon partolling was to start on and from 1-6-77. The actual date for patrolling could be advanced by the Divisional Engineer at his discretion as deposed by several Railway witnesses. According to Shri Biswas, Divisional Engineer/IH/Alipurduar Junction (the Divisional Engineer for this section—Witness No. 27) regular monsoon had not started, and that this year the regular monsoon broke in Assam only on the 7th June was brought out in the evi- dence by Shri Saxena, Meteorologist lnchargc, Gauhati Aerodrome (Witness No. 41). Shri Sux.e.na also deposed to the effect that breaking of monsoon has little relation to the heavy rainfall in the area, and that heavy rainfall can occur, even prior to monsoon. That heavy rainfall occurred this year a number of tunes in Assam was amply demonstrated by a number of rainfall warnings issued from his observatory in April and May. In the circumstances, the Divisional Engineer's decision to start patrolling only from 1-6-77 stands vindicated.

7.5 In this roach it was noticed that the Railway arranges patrolling at four hour intervals. \n view of the flashy nature of streams in the area, the Railway should introduce intensive patrolling at two hour intervals. The regular mon- soon patrolling date, wherever it is to stait from first of Juno, should also be fcivanced fcy 10 days and should start from 21st of May.

8. Golandi Irrigation Scheme Head Works

8.1. Both the Railway and the Irrigation Department, Government of Assam, deposed that Golandi Irrigation Scheme Head Works do not constitute a railway affecting work. The Additional Chief Engineer, Irrigation Department (Witness No. 33) deposed that if all the sluice gates of the Irrigation Head Works were kept closed the afflux Bunds would get overtopped before the railway bridge got affected. The lowest level of the bund on the left bank between the road bridge and the railway bridge No. 139 is 108.88 as shown in Ex. 101 filed by the Chief Engineer Rail- way. The maximum flood level recorded at the gauge 500' up- stream of the Head Works on the night of 29-5-77 is equi- valent to RL 108.66m (water levels are observed and re- corded by the Irrigation Department only at the above gauge and not at the sluice gate). The corresponding flood water level as observed just upstream of the railway bridge was 109.44, the difference between the two levels being due to the afflux and the surface slope. This level being just at about the top of the upstream guide bund of the railway bridge, even a smalF rise of flood water level above that recorded at the Head Works gauge on the night of 29-5-77 will mean overtopping of the guide bund of the railway bridge. This will certainly endanger the safety of the guide bund and hence the railway bridge. The contention of the Addi- tional Chief Engineer that the Gol'andi Irrigation Scheme is not a railway affecting work is not thus borno out by the conditions, as actually experienced on 29/30-5-77.

The above is on the assumption that all the sluice gates were fully open during the 29/30th May, 1977 flood. In case the gaits remain partially cloaed, may be inadvertantly during floods, the rate of rise in water level will be relatively taster and the levels upstream also will be higher. This will, therefore, further aggravate the condition -mentioned above. We, therefore, cannot but conclude that the work iy railway affecting.

8.2. There is no doubt, however, that even if the work had been listed as railway alfecting, the condition as on 30-5-1977 would not have been materially different. The control of the sluice gates is in the hands of the Irrigation Department and rightly so; and even if the work was listed as railway affecting dual control would not have been practicable nor could it have been envisaged in the standing operating instructions. As such the situation for all intents and purposes would have remained unaltered. In the circum- stances although the work ought now be listed by the Railway as railway affecting, we hold that classification or otherwise of this Irrigation work as railway affecting cannot be consi- dered as a cause leading to the accident.

8.3. A number of witnesses have deposed with regard to whether the sluices were fully open, partially open or fully closed on (he night of 29-5-1977. The oral evidence in this regard is conflicting and cannot be relied upon. The Irrigation Department have, however, asserted that the gates were fully open. The calculations (Annex. 1) reveal that for the ob- served flood levels of 108.66 at the gauge and the corres- ponding H.F.L. of 109.44 upstream of the bridge No. 139, the discharge passing through the head works works out to ubout 6250 cusecs. The same calculations show this would be achieved only when the weir flows with a depth of 7 feet above its crest. This would indicate that all the gates were open at least by 7 feet if not to the full height of S'-6". Had they been substantially closed, the discharge passing through the gates and the railway bridge upstream would have been correspondingly less and so also the water level upstream of (he bridge for identical level at the gauge. Considering tho factual position after the heavy floods, namely no damage to afflux bunds, no damage to sluice gates and no damage to protection works, one cannot but conclude that ihe gates were almos; fully open.

9. Summary—Causes and Responsibility

9.1, The accident was cauaed on account of the unprece- dented and unexpected flash flood in the river Golandi, due to heavy and intensive rainfall in the Bhutan hills resulting in a massive spill towards the Beki nala, across which the bridge No, 141 was located. The floods were accentuated by the diversion of almost the entire flow from the adjacent catchment of Khourang river flowing to the west of Golandi. The conditions which developed were thus such as could not reasonably be foreseen. Besides, no warning for the heavy rainfall in this area was received from the Meteorological Department. We, therefore, consider this as an "act of God" ana do not hold any one responsible for the fateful accident.

[II. SAFEGUARDS AGAINST SIMILAR ACCIDENTS IN FUTURE

10. Increase in flood Potential of River Golandi and Measure* lo deal with it

10.1. The maximum discharge that bridge No. 139 and (he Golandi Irrigation Head Works could safely pass is found to be of the order of 7000 cusecs, which also happens to be Ihc "design discharge" of (he Irrigation Scheme. This value presumably is derived from observed flood levels or is based on the expected discharge from the catchment of Golandi river. The catchment area was shown to be 11.6 sq. miles. This was with reference lo the old topo sheets (Ex. 54) which were based on surveys in 1913, and the survey in Bhutan territory was an eye sketch and was only approximate, As brought out in para 3.2 earlier, the catchment area on the basis of the latest topo sheets (Ex. 55) upto bridge No. 139 is found to be 20 tq. miles i.e., almost double than that was originally determined by the Railway. Besides, there has been a pro- gressive change in the flow and other characteristics of the river over the period and duriny the recent flood of the night of 29/30-5-1977, almost the entire flow from the Khauranp river in tho adjacent catchment of li sq. miles was diverted into Golandi.

1186 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(ii)]

10.2. The flood potential of the river Goloudi has the- refore, enormously Increased in relation to what it was earlier (and based on which the works tower dowm wero in all probability designed).

10.3. In light of the above facts, a comprehensive review of the design of the '"existing" works on this river viz, bridge No. 139 and the Golandi Irrigation Scheme is called for. This will have to be taken into consideration also while re- designing the bridge No. 141 across the Beki nala, which was seriously affected by the spills of Golandi and as a result of which it was washed away.

10.4. A number of alternatives suggest themselves the im-

portant of which the listed below :—

(i) Training of the Khaurang river in its upper reach where it has joined tie river Golandi with a view to checking or arresting the diversion of its flow hi the Golandi ;

(ii) Review (and redesign where necessary) of the existing and proposed water ways on Golandi and Beki, along with the related protection works.

These works in the main are:

(a) Railway Bridge No. 139;

(b) Railway bridge No. 141 ;

(c) Road bridges on the existing PWD road as well as on the Defence road presently under construc- tion ;

(d) Golandi Irrigation Scheme headworks.

(iii) Provision of marginal bunds on either banks of the river Golandi upstream of the railway bridg; No. 139, the proposals will have to be carefully looked into as such protective bunds have their own merits and demerits particularly in case of rivers of the aggrading type as in the present cast.

contemplated for obtaining information about rainfall precipi- tation (actual or forecast) in the upstream catchment fal i in Bhutan hills, Shri S. P. Saxena, Meteorologist Incharge, Gauhati Aerodrome (Witness No. 41) answered in the negative. Shri H. Gohain, Chairman, Brahmaputra Flood Control Commission, Gauhati (Witness No. 50) stated that they were installing a system of rain gauges in the catch- ment of major tributaries of river Brahmaputra and that there were also a few rain gauge stations in Bhutan in the catchment of Manas and proposals were afoot to set up some rain gauges in the catchment of Pagladia. So far as Golandi river was concerned, there was no such pro- posal. Shri S, A, Shah, Additional Chief Engineer, Irriga- tion Department (Witness No. 33) mentioned that so far as Irrigation Department was concerned, they had no such system but he recollected that in the Flood Control Depart- ment, they used to get such information not only from Bhutan but also from Tibet.

12.2 In view of the fact (hat at present there is no proposal to have information about the rain-fall precipitation—-actual or forecast—in the Bhutan hills, which has a significant (in some cases—major) contribution to make to the floods lower down, as in the river Oolandi, it is suggested that arrangements should be made to have such information from Bhutan. Addi- tional rain gauges may also be got installed in the Bhutan territory where considered necessary with the cooperation of the Bhutan Government. This may perhaps conveniently be arranged with Ihc help of the Meteorological Department. This need not be limited to the upper catchment of Golandi but should extend to the belt covering the range to the north of the Rangiya-Rangapara North section of the Railways which runs almost parallel to and near to the Bhutan hills,

13. Vulnerable Bridges—Criteria & Review.

13.1 Having regard to what has been now experienced the Railway should modify its criteria for classification of vul- nerable bridges and revise its list of such bridges. Details are discussed in para 6.2,

^_

13.2 Warning Boards should be provided on bridges across flashy rivers to enable the drivers to approach such streams very cautiously during heavy rains and floods (Para 6.3),

14. VotiolUng

10,3. To achieve the desired result, the above alternatives, cither singly or i" suitable combination as may be even- tually found workable and economical, have to be adopted. As these proposals embrace not only Railways but also other departments like the P.W-D, Irrigation, Defenco etc., it is suggested that this issue should be brought before the State Committee of Engineers, who may co-opt such other members as they may deem necessary, and thereafter take follow up action.

11. Review of Waterways on the Banglya—Tanglfl—Rauga—

para Section i

11.1. In view of what has happened, the Railway should undertake a review of the waterways on the section iRangiya-Tangla-Rangapara,, The entire Rangiya-Rangaparla North section may not be similarly situated, and priority may be given to Tangla to Rangapaia North section and later perhaps the bridges on the entire section of Rangiya- Rangapara North should be reviewed in respect of water- ways, afflux, protection works, spilling of streams etc. As a first step the Railway should arrange to procure the latest topo sheet of this region. The Railway should inter alia ascertain as to which of the streams are flshy and are liable to cause flooding in a matter of hours. It should also list bridges that experience heavy afflux and cause dangerous velocities. Correct remedial measures after due consideration of all the relevant factors and all aspects of the case, by a team of experienced engineers should be undertaken. As one of the functions of the State Committee of Engineers is to review the waterways of the Railway bridges, the advice of the State Committee of Engineers should invariably be taken. Wherever necessary, work nhuold be taken up in coordination with the PWD of the State Government. If they have road bridges in the near vicinity of the railway bridges, so that in case the water- way of the railway bridge is extended, a corresponding extension is done by the PWD of the State Government for the road bridge also.

12. Rainfall In Bhutan—Exchange of Information for the

12.1, As brought out in para 4,2, the unprecedented flood In Golandi was inter alia due to the heavy and intensive rainfall precipitation in the Bhutan hills. When questioned whether there was any arrangement existing or was being 14.1 In view of the flashy nature of streams in this area, intensive patrolling should be introduced at two hour inter- vals instead of the present practice of having it at four hour intervals (Para 7,5).

14.2 The date of commencement of regular monsoon pat- rolling wherever it is from 1st June, should be advanced to 21st May (Para 7.5),

14.3 Para 1702 of the Indian Railway Way and Works Manual should be modified to have an additional provision that during sudden abnormal rain or on receipt of a heavy rain- ffill warning from the I.M.D., the mate uhould post gangmen as watchmen at each of such flashy streams, as the Railway may determine (Para 6.3).

15. Golandi Irrigation Scheme

15.1 The Golundi Irrigation Scheme should be classified as

a "Railway affecting work" (Para 8).

15.2 There are certain standing instructions issued by the Chief Engineer, Irrigation Department, Government of Assam, Gauhati, for measures to be taken "Before", "During" and "After" floods (Ex: 57). In the instruction sheet Part A under the heading "II During Floods—I Head Works", it is directed in para (viii) that :—

"When a head works is threatened in the event of a very unprecedented flood in the river so that it is unable to accommodate the discharge and it becomes immediately necessary to provide some es- cape of the flood water for safety of the costly structure, the Executive Engineer should take spot decision to cut open the afflux bund for providing such flood escape and ensure protection of the two ends of the bund from being further widened."

This instruction is comprehensive enough and if followed will avert the danger posed to the safety of the main stru- cture by floods of a magnitude exceeding those which the structure can safely pass. But in case of failure to act upto

1187

these instructions—may be inadvertHntly—the safety of the structure will be at stake, Besides, as In the case of Go- landi, the railway bridge No. 139 upstream will also be adversely utfected.

It is, therefore, suggested as a. further measure of safety that, a regularly designed escape (or escapes) should be pro- vided iit a suitable place upstream of the structure on one (or both the) banks. Its crest should correspond to the designed H.F.L. after taking into consideration the rise due to back water uplo the point where the escape is proposed to be located. The escape channel should also be properly designed and maintained right upto its outfall.

Sd/-

Sd/-

M. N. JATHAL, Assessor KALI CHARAN, Assessor

ANNEXURE 1

COMPUTATIONS

FOR

DISCHARGE ETC.

BRIDGE NO. 139

AND

GOLANDI IRRIGATION HEAD WORKS

Discharge through Bridge No. 139

M 109,44

ft. 359.06 H.F.L. u/s of Bridge No. 139 H.F.L. d/s of Bridge al the gauge

108.6G 356.49 location

Fall of water level = H

2.57 ft.

0.78 m

Assume

t^ = 1.95'and h, = 0.62 H = rn+h, = 2.57'

0.62 1 1

255 411 20.18

Crosy sectional area at 51m/167' downstream of the Area = 803 sq.ft.

bridge No. 139 (Ret. Plan No. CE/PCN/l/59/77-Ex : 29) water level' at that 9ection=

Lengths 144

88

0.62 x •= 0.21 356.49+0.21

803

255

R = av. d e p t h m— - 5.58

144

•= 356.70 ft. =. 108.72 m

Area at water level 108,72 m

„ , ,, , ,, Dist. RL HFL h hm 1 A KZ/J = i . i3

2 /3

x H x ^ A, .u m. „ r~

.. ' 49 v D ~xR X s Assume n - . (k l f i" To8^72 108.72 0 0.92 1.5 1,38 I7.5totl06.89 108.72 1.83 1.83 37.5 68.82 35 ((mean)

m" 72 108.72 0 0.92 5.00 4.60

5 0 x 3 . 15

Total -= 4 4 .0 74.60 sqm ~ 'ay ~2Q 18 ~ '

X10.704

- U 4 fi M(j03 Sq. ft. Q = 803 x 7.8 = 6263 cusecs . .. 1

1188 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(ii)]

Discharge through the bridge opening

Affluxed level Afflux assumed (hi)

Non-a ffluxed level

- m

Metres 109.44 0.59

Feet 359.06 1,95

=

108.85 357.11

Area at the bridge (Based on calculations by Shri Suryanurayana, Addl. C. E.^Ex : 43)

Area at RL 357.11

Sq. fi.

(a) 60 x 7.58 = 435.8

Less batter of piers 2 x i x 0 . 5 0 x 7 . 58 = --3,8

Net = 432.0 432,0 (b) 2 x i x 1.5 x 7.58 x 7,58 = 86 86.0 (c) 2 x 18.34 x 7.58 = 278.0-

Less batter of piers 2 x i x 0,5 x 7,58 - - 3 ,8

Total net area of opening = 274.2 274.2

" 792.2

Say 792 sq. ft.

| B. For area at affluxcd level at 359.06

(a) Gross at RL 357.11 = 435.8 (b) Gross at RL 357.11 = 86.0 (c) Gross at RL 357.11 = 278.00 (d) Add for piers 2 x 5.0 x 7.58 = 75.80 (c) Add (65+40.81+40.81)x 1.95 = 286.0

Total - 1161.6 Say 1162 sq ft.

Va=assumed as

Q 6263

. — = — ™5.39 ft/sec

Cross area at 359.06 1162

8 5!

h.\ = = J.I.Ut.

64

Taking end contractions into considciat.'cn, * Q = 3 .3 (L—nx ,1 h) [(h + ha)3/2—ha 3/2)]

= 3 3 (100—20x . 7| (7 + 1.13) 3/2—(1.13)3/2 ^ 3 .3 x 86 x (tt. 13 3/2—1 .13 3/2) ^ r.S3.8x(23.l8—1 .20) = 283.8x21.98 = 6138 cusees . , .. • • I11

*N its : Ai the wjir h designed such that ;i st mding wave is ri.-n • -1 'Ijwisiro un, the above formula will I.old good (Ex : 59).

T i; W J t jr 1-V^l at t h; s l u ' c: g LIO w i ll bj :

347.75+7.00 = 354.75 ft. 105.99 + 2.13=108.12 m The water sLirf;icc fall in the 500'long reach between the gauge

locuion and the Hedd Works will, therefore, be

1.74 1

356.49—354.75 = =

500 287

Discharge throjgh the Golandl Irrigation Head Works In Hie night of 29.5.1977 on tlie basis of actual discharge observed on 5.7.1977 (Kx: 81)

• V = 5x-v/hl+ha = 5N/1.95_+.45

= 5\/2.4 - 7.75fL/sec

• O = A xv = 792 x 7.75=6135 cusccs II This compares fairly well with that derived for the reach below the bridge viz. 6263 cusees. Hence the assumptions regarding afflux and the corresponding discharge are rea- sonable.

This may, therefore, be taken as say 6250 cusccs. Assuming that the weir at the Golandi HW is flowing with a head of 7 ft, the discharge it can pass with all the sluices fully open :—

Cross sectional area a little upstream of the HW—

Assume silting to an average depth of one foot.

Area = 122.5 x(7'--l') = 735 sq. ft.

Va for an assumed Q of 6250 cusccs

Area of thj crOiS section .. . . 811.50 sq.ft. Length of ihe cross section .. . . 185 ft. Velocity (suiface) .. ... .100 ft/sec Mean vjioeityO.H N 10 ... ... S.Oft/sec Uiscliargs ••• •• 6492 cusccs Wdtcrlevd

... ••• 339.45

The discharge and water level are measured at the gauge

site- which is located 500 ft upstream of the head works.

The difference between the values of the B. M. of the two departments viz. Railways and the Irrigation ia worked out as under :—

Top of the abutment (Iri-i. Dcptt. Ex : 59) . .Ml .CO ft To,)onii:abuLin:.it(Riilwjys Ex : 103) .. 109 055 m

•.Difference = 357.79—341.00

= I Ci. 79 ft

Say 16.80 ft

The II F L. on 5-7-77 at the gauge will, therefore, corres-

6250

= = 8.5 ft. sec.

735

pond to RL 339.45 + 16.80 = 356.25 (108.58m). That rcce tied on the night of 29-5-77 was 356,49 which is thus abc 3 inch higher than that on 5-7-77. The discharge t

1189

parsed through the Golandi head works on 29-5-77 would be thus comparable to that, i.e., actually measured and re- corded on 5-7-77.

In the discharge observation by the Irrigation Department, the velocity is measured by float at a single point across Ihe cross section and not separately for each compartment This is termed what is called "single point measurement". The velocity as computed is, therefore, not the average of the velocity for the entire section. A co-efficient has, there- fore, to be applied to account for this factor.

The co-efficient npplied by [he Irrigation Deptt. to com- pute the mean velocity from the observed surface velocity is 0.80. This is, however, on the higher side. It should be about 0,85.

Assuming a co-efficient of 0.90 for converting the "single" point measured velocity to the average velocity for the entire section and a co-efficient of 0.85 for computing mean velocity from surface velocity :

Thv; average velocity = 0.85x0.9 x Surface velocity In this case, Vav = 0 . 8 5 x 9 x 1 0'

= 7.()5fi/scc.

0 = 811.5x765 = G20 8 cusecs

(isiiinsl 6492 cr;ccs woiked oul by the Department)

The H.F.L. on the night of 29-5-77 was about 3" higher than that on 5-7-77. The area of cross section will, therefore, be correspondingly higher, i.e., 185'X0.3"~46 say 50 sq. ft,

.-. Q = 6208 + 50x7 65 = 6208 + 382 = 6590 cusecs .. ... .. IV This also fairly ngrees with what is worked out earlier. To summarise :

Cuscos

Q through the bridge opening .. .. 6135 II Q in the river channel between bridge No. 1?.9

and the Golandi Irrigation Head Woiks .. 6263 I

Qal the Golandi Irrigation Head Works

gates

6238 III

Q — do— —do— on the basis of

actual observed discharge on 5-7-77 .. (3590 JV

Average . . . . .. , . . (,306

Rounded off to = 6500 cusecs.

Discharge through the Golandi Head Works with the water level just upstream of the sluice gates conforming to the desi- gned H.F.L.

Head ovor crest . , 8 feet Design discharge 7000 cusecs (Wit. No. 34)

I. Assuming the bed immediately upstream to be silted up by an average depth of l'O", the velocity of approach :

7000 7000 „ , , - „, - m : 5 V7 ~ - 8 5 T 5 - -8-16 ft/wc"

8.16s lia " —— " 1 041

64

Taking end contractions into consideration,

Q = 3.3 ( I 0 0 ~ 2 0x . I x 8 ) ( 8 + l . 0 4) 3/2—(1—04) 3/2

= 3.30x 84x(27.18—1 .06)

= 3 . 3 0 x 8 4 x 2 6 . 12

= 7240 cusecs . . . .. I

II. For non silted condition of the bed,

0 = 3 , 3 x 8 4 x ( 8 .8 3/2—0.8 3/,)

= 3.3x84x(26.11—0.72) = 3 . 3 x 8 4 x 2 5 . 39 = 7038 cusecs . . .. . If

Values 1 and II fairly tally with the VPIUL- of uesign discbarge Viz : 7000 cusees.

BRIDGE NO. 141

Calculation for discharge

Cross section area worked out on the basis of sketch given in Ex : 43 (with slight corrections in dimensions,

where they were found to be not consistent).

119Q THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(Li) j

Aveas

I. At o l d H . F X.

! x 1 8 . 8 0 x6 76 = 127

•'£x 2 x 1 0 . 3 5 x 6 . 76 = 70

1 x 3 9 . 5 0 x 2 . 20 = fi7

234 .. 2K4sq,R.

2. At the bottom of the girder

2 8 4 + 3 9 5 x2 89

„ 284+114

- 398 . . .. .198 sq.ft.

3. At H.F.L. on 30-5-77

3X4 + 39.5 x 6.06

- 284 + 2.18

= 522 sq.ft. . . .. 522fci.fr.

(Difference bclwcen HI L on 30-5-77 and ok:

HFL=357.43—351 .38 = 6.06—as per Fx ; 96)

The HFL is 6 06—2.39—3.17 ft. above the bottom of the girder.

4. \ rm itt the witer Iev3l downstream for an assumed afflux of 5 feet

522—39.5x5 _ 522—197 ^ 3 25 . . . 3.25 sq. fi.

I. DI*charBe at 1I.F.L. (30.5.77)

Aisu:m velocity of approach 4 ft/sec (issuvmd law as there wis an oblique flow)

4"

h a. -_ = 0.25

64

Q - c c V 2 g ( h + h a )x A

= 325x . 6 2 x 8 ^ 5 . 25 =. 3 2 5 x 5 x 2 . 29 =" 3721 cusecs . . .. 3721 cusecs

II. Discharge at previous H.F.L.

Assuming 2 ft afflux

Q a (284—2x39.5) x 5y 2.25

. 2 1 5 x 5 x 1 .5 " 1612 cusecs =" say . . 1600 cusecs

III. Discharge with water level at thf> bottom of the girder

Assuming afflux of say 2.5 feet,

Q =- (398—2.5x37.5)x 5^/2-75

DISCHARGE THROUGH THE GOLANDI RIVER ON THE BASIS OF MANNING'S FORMULA

Flood Slope

The Flood Slope is computed from the flood levels ob- served at 1100 m and 560 m upstream of the bridge No. 139 as this reach is fairly away from the bridge and hence relatively less affected by the afflux at the bridge and its hack water.

H.F.L. at 1100 m upstream of bridge No.139

(Ex: 27) . . . . 113.00

H.F.L. at 560 m upstream of bridge No. 139

(Ex: 27) . . .. 110.85

.". Surface fall . . . • • 2.15

2.15 1

Surface Slope S = =" — —

540 250

60

Hence H.F.L. at 500 m - 1 1 0 . 8 5—

250

-= 110.85—0,24

- 110.61

=. 3 0 0 x 5 x 5 x 1 .8 =. 1500x1.66 = •M87CUSCOS => Siy 2500 cusecs.

NOTE :

The above calculations are made on the basis of an assumed afflux of 5 ft. It is seen from rough calculations that for assumed afflux of 4 ft and 6 ft, the discharge at H. F. L. (30.5.77) varies within only marginal limits (for 4 ft. afflux it ia 3762 cusecs and for 6' afflux is 3563 cusecs.). This is so because, while for a higher afflux, the velocity increases, the unafifluxed area decreases and vice versa. The value of 3721 cusecs (rounded off to 4000 cusecs) can, therefore, be a reasonable assumption for the discharge at the H. F. L. on 30-5-77.

Area ofcross section at 500 m upstream ofbridte No. 139 (E x:3")

1 A

dm

d

W.L.

C.L,

Distance

1 1 .52

1.52

1 .27

110.61

109.34

135

104 184 08

1 .77

110.61 1 .77

\ 108.84 J (mean)

131> to 240

2

1 .625

3.25

1.48

110.61

109.13

242

8

1.34

10.72

1 .20

110.61

109.41

250

115 = 377'

199. 2-

sc

1191 2148 RD _. ,_ =,5.7 377 Where K-= shape factor, ratio of diameter of standard semi-circular catchment of the same area to actual stream length of catchment < < Equivalent D of semi-circle in the present case.

R1 =5.7-3.19

V- !

250 15.81

• ^ 3 1 x8 2^ 62 c 8.88

j) ^ . = „

ii

it

8.88

,

K = — - 0,5 and K* =.0.79

17,75

V a ,—. x 5.7* x S1 (Manning's formula

.03 within- .03)

1 V - 5 O x 3 . 1 9x =• 10.09 ft/sec. 15.81

Q .= 2148x10.09 =. 21,673 cusecs Say =• 22,000 cusecs

This represents the flow in the main well defined channel i.e., it is exclusive of the overbank flow, which difficult to estimate even approximately in the present case.

MAXIMUM INFLOW IN GOLANDI

Catchment area of Gotandi

20 sq. miles

Catchment area of Khaurang river up to its confluence with Golandl

11 sq, miles

Total . 31 sq. miles

17.75 miles Length of the catchment from its source up to bridge No. 139 (28.56 km) . . .

I. Inglls Formula

Referring to the Manual on River Behaviour, Control and Training—C.B.l.P. publication No. 60—(1956) Table on page 72, gives the modified Inglis formula for computing maximum flood discharge as under :—

* A Q - K* 7000x , "

V A +4

- 0.79 7000x 31

1

= 5430x31 x —

5-92

"= 28500 cusecs 28500 cusecs-I

II. Dlcken'i Formula

If we consider Dicken's formula,

Q = C A*

Assuming C = 2000,

Q =. 2OOOx3li

=. 2000x13.15 =. 27,300 cusocs . . 27300 cusecs = 11

The Chairman, Brahmaputra Flood Control Pi uppmi. Gauhati, in the calculations filed as Ex : 77 has adopted 2000 as the value of "C" in the Dicken's formula smce the area lies just below foot-hills with higher precipitations. For this he has given reference to page 11 of the "Embank- ment Manual" by CW & PC.

Taking into consideration the fact that out of the above flow, same discharge passed through the Bhairab Bil, via the offshoot of Oolandi, the net inflow into Golandi can be roughly placed at say 25000 cusecs.

V A+4

282 GI/77—9

[No. 77/Safety (A&R)/1/15]

B. MOHANTY, Secy., Railway Board

PRINTED BY THE MANAGER, GOVT. OF INDIA PRESS, RING. ROAD, NEW DELHI-110064

AND PUBLISHED BY THE CONTROLLER OF PUBLICATIONS, DELHt-110054, 1 9 78


  1. regard will be taken in consultation with the Mete- orological Department. There are 327 bridges between Rangiya and Rangapara NQrth most of which cater to local drainage. During the entire period that this railway section has been in existence, with the excep- tion of 9 bridges, none of the other bridges have had any adverse history as to merit their inclusion in the vulnerable list, Classifying all the 327 bridges as vulnerable subject to flash, floods would not therefore be justified. However, all tlie bridges on streams having their sources in Bhutan hills (which may bs liable to sudden floods) will be included in tho vulnerable list. These will be In addition to the brid- ges classified as vulnerable on account of their past, history, or any other spe- cial feature. The position will bs reviewed after 5 years. 10. A closer and a more mean- ingful contact should be established and maintained between the Railway and the Meteorological Depart- ment for the timely and correct transmission of heavy rainfall warnings and weather forecasts. Steps should also be taken by the Meteorological Department for the installation of self recording rain gauges. Accepted, Monsoon patrol- ling would be mado more intensive so that the interval between tho scheduled time of patrolman's visit and passenger train arrival is not excessive. While considerations of practicability cannot be Ignored and no system of patrolling can bo a guarantee against all accidents, I think that, In view of the history of bridges in this section, now, the monsoon patrolling should be made more inten- sive. Noted, This will also be brought to the notice of the State Government through the Assam State Com- mittee of Engineers. 11. rhi3 will ba eta-.ninad in consultation with tha Mstaorological Depart- ment. In view of the fact that river 1 Golandi and other rivers over which bridges have been constructed in tho Rangiya-Rangapara North section have their sourco in Bhutan hills and heavy rain- fall there would naturally have its repercussion on the bridges over those rivers a system of co-ordination betwisn tho Meteorological department of India and Bhutan should be devised and established. The Report of tho Commission together with the opinion of the Assessors Is bains published for general information. [No. 77/Safety (A&RJ/1/I5] Golandi Irrigation Scheme which had not hitherto been classified as a 'Railway alTecting work' should now be classified as such. Sri A.R.S. Rao, Additional Chief Engineer (Bridges) who initially stated in his evidence before the Com- mission that the opening or closing of the sluice gates would have no effect at bridge No. 139, ultimately conceded that "closure of the sluice gates will have some effect on the rack", and that "the 1 closing or opening of sluice gates will have a re- percussion upon the condi- tions prevailing at bridge No. 139 during floods." There can be no doubt that the sluice gates are 'Railway affecting works' and they should be treated as such. B. MOHANTY, Secretary Railway B.iaid ↩
  2. notices issued by the Com- mission, all such person, bodies and organisations as desired to participate in the proceeding before the Commis- sion would be allowed to do so and also to engage counsel. But none except the Railway engaged counsel or participated in the proceedings save by filing the above men- tioned statements. The Commission, however, thoroughly questioned the witnesses produced by the Railway and those cal'led by itself and got quite a large number of relevant documents produced by the Railway and other departments of Government. It closely scrutinised the correctness and accuracy of the mans, drawings and other records produced by the Railway ana got fresh measurement made in regard to some matters. The Commission was, therefore, satisfied that all available important material bearing on the matters to be determined by it was before it for consideration. The Railway was represented before the Commission by Sri Jyoti Prakash Bhattacharjee, Sri Pabitra Chandra Kataki, Sri Prasanta Kr. Goswami and Sri Mukundukam Sharma, Advocates, and arguments on behai'f of the Railway were addressed by Sri lyoti Prakash Bhattacharjee. The hearing of the evidence and arguments closed on 8th August 1977. On 9th August 1977 a letter was received by the Secretary of the Commission from Sri B. Barua, IAS, Secretary to the Government of Assam Political (A) Department, saying that Government had come to learn that some allegations had been made blaming the State Govern- ment or its agencies for the Railway accident and requesting that the State Government be acquainted about the same so that "the Government may decide as to whether it should enter appearance before the Hon'lii'e Commission and take step which it may deem necesiaiy to protect its interest". This was a very belated and unusual request, and I passed an order rejecting it giving detailed reasons for '.he order. I also directed the Secretary of the Commission to ii;f,vm Sri B. Barua of the order and send to him a copy thereof. I may now formulate the matters that have to be considered in determining what could be the cause or causes of the acci- dent and the person or persons, if any, responsible for it. These matters may be classified under the following heads : 1, Whether the engine of 13 UP Tezpur Express on 29th Sri P. N. Dasgupta, Fitter Jn charge, Rangapara (W. No, I) has stated before the Commission that he carried out the schedule I repair check of the engine of the train on 28th May, 1977. This check is done after an engine has run 1300 to 1600 kins, or after 10 days whichever is earlier. The check showed that the engine was in good condition and fit for runn- ing Sri R. K, Roy, Loco Engine Fitter, Rangiya Junction (W. No. 2) has stated that he checked the engine when it came into the shed at 22,00 hrs. on 29th May, 77 and found everything alright. A book is maintained on every engine in which the driver nptes down the defects of items needing attentions. According to his statement, the incoming driver who brought this engine with 174Dn had booked two items to bs attended to, viz,, (i) duplicator cleaning and (li) right hand injector blowing, and both these items had been actually attended to. The book referred to above is not available now as it went down into water along; with the engine. In reply :.o the question whether attention is limited to the defects not- ed in the book or whether other defects are also noted and s'fcnded to. Sri R. K. Roy has stated that a thorough check if fh? <"ni:inc is made. The evidence of Sri Roy is corrobated b' 'hat of Sri R. S. Mandal Engine Fitter Rangiya Jn. (W. No. 3) who has said that along with Sri Roy, he attended to the defects noted in the book. He has added that he examined everything about the engine and did not find any other items requiring attention. Sri Ahmed Ali, Shcdman, Rangiya Junc- tion (W. No. 4) has said that checking of the engine was done by the fitters under his supervision. He has referred to the 'Time sequence register' in which a chronological account is maintained of all the activities performed on an engine from May, 77 was in good working order ? ↩
  3. ', 1977, having been on 13th May, 1977. He has further stated that the period of validity is indicated in the warnings and that the warning of 13th May was valid upto the morning of 15th May, 1977. It is, doubtless, true that the above mentioned witnesses have given different dates about the receipt of the last weather warning message prior to the date of accident. The correct date, however, appears to bo 13 th May, 1977, as given by Sri S. P. Saxena, Meteoro- logist Incharge because it is from his office that the messages actually issue. The attention of Sri S. P. Saxena was drawn to the fact that the rainfall recorded at Majbat observatory of the Meteorological Department for the- 24 his ending 20th May, 1977, morning was 196.4 mm and he was asked the reason why, ir.spit': <:.f thh, heivy rainfall messnjc was not issued by him. His reply was that meteorological condi- tions prevailing on 29th May, 1977, did not require doing so. He also expressed doubt regarding the correctness of the ruinfall figure recorded at Majbat on 30th May, 1977 on the ground that the rainfall figure advised to his office ear- lier, telegraphically, by the staff at Majbat was 54.8 mm whereas the figure recorded in the register which was receiv- ed by him subsequently, by post, showed a figure of 196.4 mm. Sri S. P. Saxena has also stated that the forecast for that day could not be regarded as incorrect because, except for Majbat, the correctness of whose record of rainfall is doubtful, no other station in the area recorded heavy rain- fnlf. Tic suggested th^t there i:ouk1 be a mistake- in the ruinfiill observation of 30th May, 1977 at Majbat because the observatory there is a part time observatory having part time staff not belonging to the Meteorological Department and not very well versed in recording rainfall. 6. Whether there was any satisfactory arrangement for rcceint of weather warnings or weather forecasts by the Railways ? If so, whether any such warning or forecast requiring special steps to be taken by the Railway or special watchfulness to bo kept in regard to the running of trains had been received for 29th May, 1977 ? The evidence establishes that there is a regular system of receiving heavy rainfall messages from the Meteorologi- cal Department by the Railway and that near about the date of the accident no such message was received. In view of the fact that several such messages had been Issued by the Meteorological Department in the months of April and May 1977, I see no reckon to doubt the correctness of the evidence of Sri S. P. Saxena, Meteorologist Incharge, to the effect that meteorological conditions prevalent on 29th May 1977 were such that issue of heavy rainfall message was not necessary. 7. Whether there was any such constructional defect in bridge No. 141 as could have led or contributed to its collapse and whether the bridge provided for adequate waterway 7 The evidence of Sri K. Suryanarayana, Additional Chief Engineer /(Track) (W, No. 31) shows that the Railway has an arrangement with the Meterological Department at Calcutta and Gauhati for receiving weather vvarnlnji mes- sages. The Calcutta Office sends messages in respect of areas which li? in West Bemrpl. w!iifc Gauhati docs so In respect of areas in Assam. The messages are sent telegra- phically directly to the Chief Controller of the Railway Division likely to be affected and a copy of the relevant message is endorsed to the Chief Engineer's Office. Such warning messages are received bv the Railwav whenever rhere is an expectation of a rainfall of more than 4 inches in a day. The witness has stated that no such weather warn- ing message was received in respect of the Rnngiva— Rnncapara North Section for 28th, 29th and 30th May, Sri P. G. Gopalan, Chief Knt-inerr (W. No. 321, has said that weather warning messages in regard to very heavy rain- fall are received directly by the Divisional Enpineer and he (Divisional Engineer) takes immediate measures for patrol of the track in accordance with para 1702 of the Indian I propose first to give a brief description of bridge No. 14! tis it existed at the time of the accident. The bridge was a _ girder bridge haying a single span of 12.2 m (40 ft), with the girder resting on masonry abutments having cement concrete foundations. The bridge had been provided with a flooring of boulders 2 feet thick, and the foundations of the bridge were 4-1/2 feet below the floor level. In front of ↩
  4. The discharge expected from this increased catchment area, according to the 'Opinion' of the learned Assessors, is 10,000 cusecs. Ac- cording to the calculations mentioned in the 'Opinion' of the learned Assessors, the maximum expected discharge of Gol- andi, from a total catchment area of 31 sq. miles (which includes the increased area of 11 sq. miles) would be 25.000 cusecs. This, according to them is also the discharge which has flowed in river Golandi on the night in question. Accord- ing to the calculations (Ex. 44) of Sri K. Survanarayana, Additional Chief Engineer (Track) (W. No. 31) the dis- charge on that night through river Golandi was 31,000 cuseca, but according to the learned Assessors there arc certain inaccu- racies in this calculation and the discharge was actually less. Sri K. Suryanarayana has also estimated the previous dis- charge in Golandi river corresponding to the old HFL mark, and his calculations (Ex. 43) give it as 5730 cusecs. In view of the inaccuracies pointed out by the learned Assessors, this figure against should have been lower. But, whatever might have been the quantity of di'charire in river Golandi, the fact remains that it was much heavier this year than ever before. I may now advert to the question as to how the condition of things prevailing in Golandi river came to exist there on the night in question. This takes me first to the upper rea- ches of Golandi. The river rises in the hills of Bhutan and its total length from bridge No, 139 to the uppermost extreme point of its catchment is 28.56 kms, a substantial part of which is in Bhutan territory. Tt is in evidence that on the night of 29th May, 1977, there was unprecedented heavy rain- fall in the hills of Bhutan. Sri B. M. Mahanta. Timber Mer- chant of village Daipham, Bhutan, fW, No. 21) has stated that at about 11.00 p.m. on 29th May, 1977, when he was Jn his village, which is about 1 furFonc from river Goifmdi, there was torrential rain and it remained impossible to go out till about 12 O' Cock in the n;ght. He wns out there- after, and found all the ro?ds and path-ways • breached find fishes scattered all through the fields. 'Bharia Pukhuri', a lake situated in the vicinity of Golandi, was found by him to be filled un completely with silt with no water in it, in =barp contrast, to what he had observed on the previous rlpv. Thi« appoars to have been due to a massive hill slide signs of vhich were observed bv Sri I. R. Reddy. Executive Engineer (B. G. Construction*! (W, No. 20) during the survrv of the n-rn carried out by him. It may also be observed in the photo- graph of the area (Ex. 16) produced by Sri C. P. Rancrjee, So far, I have dealt with the mnpnitude of the flood: its suddenness is no less important. As already mentioned above. there was torrential rain in (he v")r>er reaches of GoTandi river and it started abruntlv nt 11 O' Clock that night and lasted for only about an hour. 'Bhfrln Tnkhuri' a so got flllfld up bv the heavy hilislides during this short period with the result that its wat-r ,TOt expelled anil acld'.'d to the flood. Tt ii pertinent to mention here that Sri P. G- Goriabn. Chief En- fiineer (W. No. 32) has stated that the water from the upper rcicho' of GnlsrwTi would take abnut 1-1/?, h'^irs t.i '\>nch bridee No. 139. The resultant massive flood would thus have reached the site of bridpe No. 139 between odd hours and 1.00 hr. of ?Oth Mnv, 1977. The statement of Sri Brindabatl ↩
  5. ^ Srr °T t h° a c c i d e nt is located below the fool- hills of the Himalnyns to the smi'h of Bh-.i'nn anti fowdids ↩
  6. was 113.00 m. (iii") Assuming the road as a broad crested weir with a clear overfall. The possibility of a submerged flow cannot be overruled. The road embankment will be badly damaged when water is flowing with a head of 1 m with a clear overfall. 4.6 Based on the flood levels mentioned in para 4.5, and the details of various cross-sections filed, an attempt has been made to estimate, with some simplifying assumptions, the discharge 'hrongh the bridge No. 139. 141 and also the incoming discharge on the night of 29-5-77. The set of calculations are given in Annexure 1. The results are ex- tracted below : Remarks Structure Discharge in cusccs We may hasten to add that in the present case in parti- cular the calculations and the results are more in the way of aid in analysing and making a more realistic appraisal of the problem than anything else. The difference of a few hundred cusccs in the value of discharges as estimated will not, therefore, in any way vitiate the findings, 1. 2.: Bridge No. 139 Bridge No. 141 At H.F.L. 109.44 At old H.F.L. At the bottom of the II. FINDINGS AS TO THE CAUSES OF THE ACCIDENT AND FIXING RESPONSIBILITY THEREOF 6500 (1) 1600 (ii) 2500 girder, 5. Flood Discharges (iii) 4000 (i) 22000 plus At H.F.L. (29/30-5-77) By Mannging's formula Inflow 3. overbank flow (ii) 28500 gross By Modified fnglis formula By Dickcn's formula (iii) 27300 gross (iv) 23000 Net inflow in Golandi. (approx) 5.1 On the basis of the available data in respect of catch- ment area of Beki, calculations regarding the expected dis- charge were made. These calculations indicate that dis- charge from Beki nalla cannot under any circumstances exceed about 1000 cusccs. On the strength of the same it can bo definitely concluded that the waterway, the protec- tion works and (he foundations of bridge No, 141 were quite adequate to safely pass the expected discharge from Beki catchment. That it could also safely pass an addi- tional discharge, i.e., a total discharge of 2500 cusecs which provided sufficient margin of safety is clearly and definitely indicated. 5.2 Computations done to determine the discharge at HFL and just before the breach can at best be a guess work, as exact nfflux obtaining at the relevant time was not ascertainable and could not be ascertained. The tail water level obtaining was also not ascertainable and was also not ascertained. The computations, in respect of affluxes and tall water depths, indicate that bridge No. 141 passed a dis- charge of about 1600 cusecs (it HFL (old) and 4000 cusocs before breach (Anncxure T). 4.7 From the net inflow of 25000 cusecs in the Golandi, as indicated in para 4.6, about 6500 cusccs passed through bridge No. 139, and about 4000 cusecs through bridge No. 141. As the PWD road to the east was overtopped in the length of about 700 ft, some discharge also overflowed this road. As to how much it could have been will be more a matter of guess, for want of adequate observed date, parti- cularly regarding water levels downstream of the road. The balance went to build up so to say a lake inundating a vast area of about 1.31 sq, km. to an average depth of about 1.34 m (Ex : 47). The volume of water thus temporarily stored worked out to about 1.7555 M. cum (62 M. cu. ft.) Considering the fact that (he heavy rainfall thai caused the flood, was mostly confined to the period from 11.00 p.m. to about midnight of 29-5-77, the volume of water stored would represent an excess flow at an average rate of about 8500 cusecs continuing for two hours. The peak excess flow may, say, be 9000 cusecs. The overall picture will be qnmpwlint ns under : 25,000 cusecs Inflow (ii) Outflow : 5.3 Since the flow was highly oblique and since the unprotected railway bank, adjacent to the abutment was under attack by a massive SDMI from river Golandi, which suddenly developed into a channel in a matter of hours, the bank could not withstand the heavy attack and pave way. Thereafter due to high velocity a deep scour deve- loped at the back of the abutment which was much below the bottom of foundations. When measured in silted con- dition this scour wan 7 ft. below the bottom of foundations. Since there was no trace of the abutment nnd since such a huge masonry block cannot be carried away by the cur- rent, the only assumption that can be is that the deep scour in which the abutment fell, pot silted up later. Since the deep scour had developed over unprotected earthen bed, tie (a) through bridge No, 139 6,500 cusecs 282 GI/77—8 ↩
  7. 5.39 29,05 Ua . ___„ — o 45 na, ™ —-~~—' ™ — " -^J 2g 64 _ 64 ↩
  8. ↩
  9. t 1 , 7000 A ↩

Cite this issue. Extraordinary Gazette of India, Government of India, 28 September 1978. Indian Gazettes, https://egazette.servantsofknowledge.in/details/in.gazette.csl_extraordinary.1978-09-28.E-1123-1978-0449-49747/. Archive identifier in.gazette.csl_extraordinary.1978-09-28.E-1123-1978-0449-49747.