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THE GAZETTE OF INDIA EXTRAORDINARY

I P , U , n

C ^ i M ,

MINISTRY OFCOMMERCE AND INDUSTRY

(Department of Industrial Policy and Promotion)

NOTIFICATION

New Delhi, the 7th December, 2001

G. S. R. 883(E).— xhe following draft of certain rules further to amend the Static

and Mobile Pressure Vessels(Unfired)Rules, 1981 (hereinafter referred to as the

principal rules) which the Central Government proposes to amend in exercise of the

powers conferred by sections 5 and section 7 of the Explosives Act, 1884 (4 of 1884) is

hereby published as required under Sub-section (1) of section 18 of the said Act, for

information of all persons likely to be affected thereby and notice is hereby given that

the said draft shall be taken into consideration forty five days after the Gazette

containing the Notification is made available to the public.

The objections or suggestions may be sent to the Joint Secretary, Department of

Industrial Policy and Promotion, Ministry of Commerce and Industry, New Delhi. The

objections or suggestions which may be received from any person with respect to the

said draft rules before the expiry of the period specified and above will be considered by

the Central Government.

DRAFT RULES

1. These rules may be called the Static and Mobile Pressure Vessels (Unfired)

(Amendment) Rules, 2001.

2. They shall come into force on the date of their final publication in the Official

Gazette.

3. In rule 2 of the Static and Mobile Pressure Vessels (Unfired) Rules, 1981,

(hereinafter referred to as the principal rules), -

(i)

for clause (e), the following clause shall be substituted, namely :-

'(e) "compressed gas" means any permanent gas, liquefiable gas or gas

dissolved in liquid or cryogenic liquid under pressure or gas mixture

which in a closed pressure vessel exercises a pressure exceeding one

atmosphere (gauge) at maximum working temperature and includes

Hydrogen Fluoride. In case of vessel without insulation or refrigeration,

the maximum working temperature shall be considered as 55 C;

(ii)

after clause "gg", the following clauses shall be inserted, namely-

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'(gga) "cryogenic liquid" means liquid form of permanent gas

having normal boiling point below minus 165° C

'(ggb)

"cryogenic pressure vessel" means a pressure vessel

intended for storage or transportation of cryogenic liquid and

includes cold converters, vacuum insulated evaporators, vacuum

insulated storage or transport tanks and thermosyphon tanks'.

4. In rule 13 of the principal rules, after the clause (b), the following clause shall be

inserted, namely -

"(c) the maximum allowable service pressure with additional allowances for

vacuum and static head or surge due to acceleration or deceleration, as case may

be, in respect of the cryogenic liquid proposed to be stored or transported".

5. In rule 14 of the principal rules, after sub-rule (2), the following sub-rule shall be

inserted, namely -

"(3) Cryogenic pressure vessels -

(i)

The design service temperature of the cryogenic pressure vessels shall

not be warmer than the normal boiling point of the cryogenic liquid;

(ii)

The materials of construction of the inner vessel, its piping and fittings

shall be suitable for the service temperature and compatible for the

specific cryogenic liquid;

(iii)

The outer vessel shall be made of steel not less than 3mm nominal

thickness or of aluminium not less than 4mm nominal thickness and shall

have required structural strength and capable for supporting .the inner

vessel together with cryogenic liquid, insulation and other fittings. The

outer vessel of vacuum insulated cryogenic tanks shall be designed for a

minimum collapsible pressure of one atmosphere (gauge). The suitable

protecting coating shall be provided on the outer vessel to avoid

corrosion. The outer vessel shall also be provided with suitable lifting

arrangement and supports for installation or mounting;

(iv)

The inner supports between the inner vessel and the outer vessel shall be

of non-inflammable materials and capable of supporting the inner vessel

together with the maximum allowable cryogenic liquid. The supports

shall be able to withstand expansion or contraction within the operating

temperature range.

Cryogenic pressure vessels meant for transport

purpose, shall be able to withstand combined loading of vertical down of

two, vertical upward of one and a half longitudinal of one and a half and

lateral of one and a half times the weight of the vessel with attachment

and the full load of cryogenic liquid. The factor of safety of the supports

shall be as per the design code;

(v)

The air in the annular space between the inner and outer vessel shall be

evacuated and the space shall be filled with suitable insulating material

compatible with the particular cryogenic liquid."

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6. In rule 15 of the principal rules, after sub-rule (2), the following sub-rule shall be

inserted, namely -

"(3)

The water capacity of the cryogenic pressure vessel shall be rated in

terms of gross water capacity and the usable water capacity in litres at

15° C. The usable water capacity shall not exceed 95% of the gross water

capacity. An overflow pipe shall be provided at the maximum usable

capacity level as a safeguard against filling the vessel beyond the

maximum usable capacity".

7. In rule 18 of the principal rules, in sub-rule 2, ~

(i) after item (i), the following item shall be inserted, namely :-

"(ia) for cryogenic pressure vessels, the outer vessel shall be provided with a

vacuum valve and safety relief device (disc) to release internal pressure. The

discharge area of such device shall be at least 0.34 sq.mm/litre of water capacity

of the inner vessel. The relief device shall function at a pressure not exceeding

the internal design pressure of the outer vessel".

(ii)

after item (vi), the following item shall be inserted, namely ; -

"(via) In case of cryogenic pressure vessels, the safety relief devices shall be set to

discharge in such a manner that at least one such device shall be set at a pressure not

higher than the maximum allowable working pressure and the other device may be

set at a pressure not higher than 110% of the maximum allowable working

pressure."

8. In rule 19 of the principal rules, after sub-rule I, the following sub-rule shall be

inserted, namely-

U(1A) Cryogenic pressure vessel and vessel for liquid Carbon Dioxide shall be

periodically tested with pneumatic pressure at 1.25 times of maximum allowable

working pressure."

9. In rule 22 of the principal rules, after Table 5 the following Tables shall be inserted,

namely:-

'TABLE 6

Minimum safety distances for non-flammable non-toxic cryogenic liquids

Water Capacity

Vessel

litres

Not exceeding

10,000

Exceeding

10,000

Between

two vessels

1 metre

Between vessel and

any

building

adjoining

property

line or pedestrians

passage

3 metres

Between vessel and flammable

structure, naked flame, pipeline

containing

flammable

fluids,

electric installations or places of

public assembly or drain

5 metres

7.5 metres

TABLE 7

Minimum Safety Distances for liquid carbon dioxide

Water capacity of vessel in

litres

Not exceeding 50,000

Exceeding 50000

Between two vessels

1 metre

2 metres

Between vessel and any

building or adjoining

property line or pedestrian

passage, or places of public

assembly

2 metres

4 metres"

10.

shall

In rule 46-A of the principal rules, after sub rule (5), the following sub-rule

be inserted, namely -

"(6) The provisions of this rule shall not apply to non-flammable, non-toxic

compressed gases".

[FileNo 2(8)/2()()l-Expl

A E AHMED, Jt Secy

NOTE:— The principal rules were published in the Gazette of India vide Notification

No.GSR 45(E) dated 4^th February, 1981 and subsequently amended vide

(1) GSR-209 dated 25^th February, 1983;

(2) GSR 264(E) dated 10^th March, 1993;

(3) GSR 243(E) dated 6^th March, 1997;

(4) GSR 705(E) dated 17^th August, 1998;

(5) GSR 141(E) dated 14^th February, 2000;

Printed bv the Manager, (Jovt of India Press, Ring Road, Muyapun, New Delhi-110064

,ind Published Iry the Controller of Publications, Delhi-110054