- Short title and commencement-
- These rules may be called the Static and Mobile Pressure Vessels (Unfired) Rules, 1981.
- They shall come into force on the date of their publication in the Official Gazette.
In these rules, unless the context otherwise requires, --
- "Act" means the Indian Explosives Act, 1884 (4 of 1884);
- "approved" means a drawing, design, specification or code approved by the Chief Controller ;
"bottling plant" means a premises where cylinders are filled with compressed gas”
- "Chief Controller" means the Chief Controller of Explosives;
- "Competent person" means a person or an organisation recognised by the Chief Controller, for such gases and for such period as may be specified as competent for carrying out tests, examination, inspections and certification for installations and transport vehicles as stipulated in these rules, if such a person or organization possesses the qualifications, experience and other requirements as set out in Appendix II to these rules and is recognized as per procedure laid down in rule 11-A:
Provided that the Chief Controller may relax the retirements of qualifications in respect of a competent person if such a person is exceptionally experienced and knowledgeable but not the requirements in respect of the facilities at his command;
- "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 degree celsius.
- "Controller of Explosives" includes Jt. Chief Controller of Explosives, the Deputy Chief Controller of Explosives, Deputy Controller of Explosives and Assistant Controller of Explosives;
- "corrosion" means all forms of wastage, and includes oxidation, scaling, mechanical abrasion and corrosion;
- "critical temperature" means the temperature above which gas cannot be liquefied by the application of pressure alone,
- "cryogenic liquid" means liquid form of permanent gas having normal boiling point
below minus 165 degree celsius.
- "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;
- "cylinder" or "gas cylinder" means any closed metal container intended for storage and transport of compressed gas having the same meaning as assigned to it in clause (xvi) of rule 2 of the Gas Cylinder Rules, 1981,"
- "design" includes drawings, calculations, specifications, models codes and all other details necessary for the complete description of the pressure vessel and its construction;
- "design pressure" means the pressure used in the design calculations of a vessel for the purpose of determining the minimum thickness of the various component parts of the vessels ;
- "dispenser" means an equipment installed in liquefied petroleum gas dispensing station, meant for dispensing liquefied petroleum gas as automotive fuel to motor vehicles,"
"district authority" means—(i) in towns having a Commissioner of Police, the Commissioner or a Deputy Commissioner of Police; and (ii) in any other place, the District Magistrate;
- "filling density" means the ratio of weight of liquefiable gas allowed in a pressure vessel to the weight of water that the vessel will hold at 15 degree celsius;
- "fill point" means the point of the inlet pipe connection of a vessel where hose is connected for filling the compressed gas into the vessel,"
- "flammability range" means the difference between the minimum and maximum percentage by volume of the gas in mixture with air that forms a flammable mixture at atmospheric pressure and ambient temperature
- "flammable compressed gas" means gas 13 percent or less of which when mixed with air forms a flammable mixture or whose flammable range with air is greater than 12 percent;
"Form" means the Form appended to these rules;
"gas free" in relation to a pressure vessel means the concentration of flammable or
toxic gases or both if such pressure vessel is within the safe limits specified for
persons to enter and carry out hot work in such vessels;
"Inspector" means a professional organization recognized by the Chief Controller for
certifying pressure vessels and their fittings after carrying out stage wise inspection
during fabrication as stipulated in the rules so as to ensure that the pressure vessels
are designed and constructed in accordance with IS:2825 or any other Code approved
by the Chief Controller, if the constituent members of the organization possesses the
qualifications and experience and other requirements as set out in Appendix II to
these rules and the recognition is granted as per procedure laid in rule 11A;
"installation" means any place which has been specially prepared for the storage of compressed gas in pressure vessels;
"liquefiable gas" means any gas that may be liquefied by pressure above -10 Degree celsius, but will be completely vaporized when in equilibrium with normal atmospheric pressure (760 mm Hg) at 30 degree celsius;
"liquefied petroleum gas" included hydrocarbon gases in liquefied state at normal ambient temperature by the application of pressure, and conforming to the Indian Standard Specification No.: IS:4576,"
"motor vehicle", means a vehicle having the meaning assigned to it in sub-section (28) of section 2 of the Motor Vehicle Act 1988 (59 of 1988),"
"petroleum service station", means a premises used for storage of petroleum for the purpose of fuelling motor vehicles, and licenced in Form – XII of the Petroleum Rules, 1976,"
"permanent gas" means a gas whose critical temperature is lower than -10 degree celsius;
"Pressure vessel" means any closed metal container of whatever shape, intended for
the storage and transport of any compressed gas which is subjected to internal
pressure and whose water capacity exceeds one thousand liters and includes inter
connecting parts and components thereof upto the first point of connection to the
connected piping and fittings, but does not include containers wherein steam or other
vapour is or is intended to be generated or water or other liquid is or is intended to be
heated by the application of fire or the products of combustion or by electrical means,
heat exchangers, evaporators, air receivers, steam type digestors, steam type
sterilizers, autoclaves, reactors, calorifiers, pressure piping components such as
separators or strainers and vessels containing a liquid under a blanket of compressed
"safety relief device" means an automatic pressure relieving device actuated by the pressure upstream of the valve and characterized by fully opened pop-up action, intended to prevent the rupture of a pressure vessel under certain conditions of exposure ;
"source of ignition" means naked lights, fires, exposed incandescent materials, electric welding arcs, lamps, other than those specially approved for use in flammable atmosphere, or a spark or flame produced by any means;
"tank truck loading or unloading gantry" or "hard stand" means the position of parking of tank truck or mobile pressure vessel for loading or unloading of compressed gas into or from it"
"transport" means the transport of a pressure vessels filled with any compressed gas from one place to another but does not include movement of the vessel from one place to another in the same premises;
"vehicle" means a mechanically propelled carriage designed to transport by land compressed gas in a pressure vessel mounted thereon, and shall not include a vessel forming the barrel of a rail tank wagon;
"vessel" means a pressure vessel;
"water" capacity means capacity in liters of the pressure vessel when completely filled with water at 15 degree celsius.
General exemptions. –
Nothing in these rules shall apply to vessels which form part of a processing plant. For the purpose of this rule vessels forming part of a processing plant shall mean vessels in which a unit process or unit operation is carried out and vessels which contain, as a precess requirement, a compressed gas received from and consumed in the same processing plant, provided that the water capacity of the vessel(s) shall be such that the gas stored therein at the maximum working pressure shall not exceed the requirement for feeding the consuming point(s) for a period not exceeding 16 hours at the designed flow rate.
Restriction on filling , manufacture and import.—
- No person shall fill any compressed gas in any vessel or transport any vessel filled with any
compressed gas unless such vessel has been manufactured in accordance with a type or
standard or code as specified under Rule 12.
No person should manufacture any vessel approved under sub-rule (1) without the prior
approval of the Chief Controller –
Any person seeking approval of the Chief Controller under sub-rule (2) shall submit to him
(a) the particulars specified in Appendix – I to these rules; and
(b) a scrutiny fee of Rupees five hundred in the manner specified under rule 11.
No person shall import any vessel without prior approval of the Chief Controller
Any person seeking the approval of the Chief Controller under sub-rule(4) shall submit to him
- a test and inspection certificate of the vessel from the manufacturer or the inspecting agency of the country of origin;
- the design details of the vessel, its fittings and particulars of specifications of the materials used in construction thereof; and
- a scrutiny fee of rupees five hundred in the manner specified under rule 11
Restriction on delivery and despatch.—
- No person shall deliver on despatch any compressed any compressed gas filled in a vessel to
any person other than the holder of a storage licence issued under these rules or to a port
authority or a railway administration.
- No compressed gas delivered or despatched under sub-rule (1) shall exceed the quantity which the person to whom it is delivered or despatched is authorised to store under the licence held by him.
Repair to pressure vessels.—
- No person shall carry out any repairs, additions or alterations to any vessel unless the proposed repairs, additions or alterations and their method of execution have been approved by the Chief Controller. Any such repairs, additions or alterations approved by the chief Controller shall be carried out in the manner and by practices acceptable under the design code referred to in Rule 12:Provided that nothing in this rule shall apply to the replacement of any of the fitments of the vessel which does not involve any heating.
Before any repairs, additions or alterations are carried out to any vessel, the same shall be completely emptied and purged with an inert gas.
Complete record of repairs, additions or alterations referred to in sub-rule (1) shall be maintained and made available to the chief Controller and his permission shall be obtained before recommissioning the vessel.
Purging of pressure vessels used for flammable gases.—
- Before using any new vessel or before the refilling of any existing vessel which has been made gas-free, air contained therein shall be purged by an inert gas or by the gas for which the vessel is to be used.
- If the vessel is purged by means of a flammable gas, the flammable mixture so formed shall be vented from the vessel only after taking adequate precautions to prevent its ignition.
Prohibition of employment of children and intoxicated persons.—
No person under the age of eighteen years or who is in a state of intoxication shall be employed for the loading, unloading or transport of any vessel containing compressed gas, or in any premises licensed under these rules.
Prohibition of smoking, fires, lights, etc.—
No person shall smoke and no matches, fires, lights or articles or substance, capable of causing ignition of any flammable gas shall be allowed, at any time in proximity to a place where any compressed gas is stored, handled or transported in a vessel.
Supervision and Operation within the Licenced premises –
The operation of the licenced premises shall be under the supervision of persons having knowledge of the equipments being used in the premise and who is/are trained in handling the compressed gas, and other operators shall be conversant with the hazards associated with the compressed gas and fire fighting operation.”
Special precautions against accidents.—
- No person shall commit or attempt to commit any act which may tend to cause a fire or explosion in or about any place where any compressed gas is stored, handled of transported in a vessel.
All empty vessels which had contained, any flammable or toxic gases, shall, except when they are opened for the purposed of filling or cleaning, or for rendering the gasfree, but kept securely closed until they have been cleaned or freed or the gas, as the case may be.
Every person storing compressed gas in a vessel and every person in charge of, or engaged in the storage, handling and transport of such gas in vessels, shall at all times—
comply with the provisions of these rules and the conditions of any licence issued thereunder;
observe all precautions for the prevention of accident by fire or explosion; and
prevent any person from committing any act referred in sub-rule (1).
Procedure for payment of fees—
All fees payable under these rules be paid through Crossed demand draft on any nationalized bank in favour of the Chief Controller of Explosives , Nagpur and in cases where the amount payable does not exceed Rs.100, the payment may be made by cash, money order, postal order or cheque drawn on a local bank.
Procedure for grant and revocation of recognition to competent person and inspector:-
Anybody intending to be recognized as Competent Person or Inspector shall submit to the Chief Controller an application in the form prescribed in Appendix III. Every application shall be accompanied by a scrutiny fee of Rs.500 for application for competent Person and Rs.1000 for application for Inspector. The Chief Controller shall register such application and within a period of sixty days of the date of receipt of the application either after having satisfied himself with regard to competence and professional ethics recognize the application as a competent person or an Inspector as the case may be, or reject the application specifying the reasons therefore.
The Chief Controller may after giving an opportunity to the Inspector or Competent Person of being heard revoke the recognition -
If he has reason to believe that an Inspector or Competent Person has violated any condition stipulated in the letter of recognition or has carried out a test, examination and inspection or has acted, in a manner inconsistent with the intent or the purpose of these rules; or
for any other reason to be recorded in writing.