Section 2(1) in Petroleum and Natural Gas Regulatory Board (Technical Standards and Specifications including Safety Standards for Liquefied Natural Gas Facilities) Regulations, 2018
(1)In these regulations, unless the context otherwise requires,-(a)"Act" means the Petroleum and Natural Gas Regulatory Board Act, 2006;(b)"Board" means the Petroleum and Natural Gas Regulatory Board established under sub-section (1) of section 3 of the Act;(c)"Boil off gas" (BOG) means the gas produced due to vaporisation of cryogenic liquid by heat conducted through the insulation;(d)"bunkering" means the loading of a ship's bunker or tank with liquid fuel for use in connection with propulsion or auxiliary equipment;(e)"container" means a vessel for storing liquefied natural gas - such a vessel may be above, partially below, or totally below ground and may consist of an inner and outer tank;(f)"container, pre-stressed concrete" means a concrete container which is considered to be prestressed when the stresses created by the different loading or loading combinations do not exceed allowable stresses;(g)"compressed gas" means any permanent gas, liquefable gas, or cryogenic liquid under pressure or gas mixture which in a closed pressure vessel exercise a pressure exceeding one atmosphere (gauge) at the maximum working temperature and includes Hydrogen Fluoride. In case of vessel without insulation or refrigeration, the maximum working temperature shall be considered as 550C ;(h)"critical temperature" means the temperature above which gas cannot be liquefied by the application of pressure alone;(i)"cryogenic liquid" means liquid form of permanent gas having normal boiling point below minus 1500C;(j)"cryogenic pressure vessel" means a pressure vessel irrespective of water capacity intended for storage or transportation of cryogenic liquid and includes cold converters, vacuum insulated vessels, vacuum insulated storage or transport tanks and thermosyphon tanks";(k)"design" includes drawings, calculations, specifications, codes and all other details necessary for complete description of the pressure vessel and its construction;(l)"design pressure" means the pressure used in the design of equipment, a container, or a vessel for the purpose of determining the minimum permissible thickness or physical characteristics of its different parts. Where applicable, static head shall be included in the design pressure to determine the thickness of any specific part;(m)"dyke" means a structure used to establish an impounding area;(n)"Emergency Release Coupler" (ERC) means the coupler fitted in each arm together with quick-acting flanking (double blocked) valves so that a dry-break release can be achieved in emergency situations;(o)"Emergency Shutdown System" (ESD) means a system that safely and effectively stops whole plant or an individual unit during abnormal situation or in emergency;(p)"failsafe" means a design feature that provides for the maintenance of safe operating conditions in the event of a malfunction of control devices or an interruption of an energy source;(q)"fired equipment" means any equipment in which the combustion of fuels takes place and includes, among others, fired boilers, fired heaters, internal combustion engines, certain integral heated vaporisers, the primary heat source for remote heated vaporisers, gas-fired oil foggers, fired regeneration heaters and flared vent stacks;(r)"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;(s)"gas free" means the concentration of flammable or toxic gases or both if it is within the safe limits specified for persons to enter and carry out hot work in such vessels;(t)"hazardous fluid" means a LNG or liquid or gas that is flammable or toxic or corrosive;(u)"ignition source" means any item or substance capable of an energy release of type and magnitude sufficient to ignite any flammable mixture of gases or vapours that could occur at the site;(v)"impounding basin" means impounding basin container within or connected to an impounding area or spill collection area where liquid hydrocarbon spills can be collected and safely confined and controlled;(w)"impounding area" means an area that may be defined through the use of dykes or the topography at the site for the purpose of containing any accidental spill of LNG or flammable refrigerants;(x)"Liquefied Natural Gas" (LNG) means a fluid in the liquid state composed predominantly of methane (CH4) and which may contain minor quantities of ethane, propane, nitrogen, or other components normally found in natural gas;(y)"LNG facility" means a group of one or more units or facilities, that is, unloading or loading, storage, regasification, associated systems like utilities, blow down, flare system, fire water storage and fire water network, control room and administration service buildings like workshop, fire station, laboratory, canteen etc.;(z)"Maximum Allowable Working Pressure" means the maximum gauge pressure permissible at the top of equipment, a container or a pressure vessel while operating at design temperature;(aa)"NDT" means Non Destructive Testing methods like Dye Penetration Inspection, Wet Fluorescent Magnetic Particle Inspection, Ultrasonic thickness checks, Ultrasonic Flaw Detection, Radiography, Hardness Test and other relevant Inspection procedures carried out to detect the defects in the welds and parent metal of the pressure vessel;(bb)"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;(cc)"primary components" include those whose failure would permit leakage of the LNG being stored, those exposed to a temperature between (-510C) and (-1680C) and those subject to thermal shock but shall not be limited to the following parts of a single-wall tank or of the inner tank in a double-wall tank, namely, shell plates, bottom plates, roof plates, knuckle plates, compression rings, shell stiffeners, manways, and nozzles including reinforcement, shell anchors, pipe tubing, forging, and bolting. These are the parts of LNG containers that are stressed to a significant level;(dd)"process plant" means the systems required to condition, liquefy or vaporise natural gas in all areas of application;(ee)"safety relief device" means an automatic pressure relieving device actuated by the pressure upstream of the valve and characterized by fully opened pop action intended to prevent the rupture of a pressure vessel under certain conditions of exposure;(ff)"secondary components" include those which will not be stressed to a significant level, those whose failure will not result in leakage of the LNG being stored or those exposed to the boil off gas and having a design metal temperature of (-510C) or higher;(gg)"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;(hh)"transfer area" is that portion of an LNG plant containing piping systems where LNG, flammable liquids, or flammable refrigerants are introduced into or removed from the facility, such as ship unloading areas, or where piping connections are routinely connected or disconnected. Transfer areas do not include product sampling devices or permanent plant piping;(ii)"transfer system" includes transfer piping and cargo transfer system;(jj)"vaporiser" means a heat transfer facility designed to introduce thermal energy in a controlled manner for changing a liquid to vapour or gaseous state;(kk)"vessel" means a pressure vessel and includes a cryogenic pressure vessel;(ll)"water capacity" means capacity in litres of the pressure vessel when completely filled with water at 150C;
