which can occur on account of even a spark inside the Plants. In premises used for filling and storing flammable gases in cylinder of LPG Plants, all electrical equipment such as motors, switches, starters, etc., installed in the premises used for Compressing and filling of flammable gases are required to be of flameproof construction conforming to IS : 2148./IEC60079 (in lieu of IS 2148). Similarly all electric meters, distribution boards, switches, fuses, plugs and sockets, all electric fittings, fixed lamps, portable hand lamps and motors, are required to be of flame proof construction conforming to IS or IEC-60079-1, IS or IEC 60079-11 or any other standard as approved by the Chief Controller Explosives and the same are also required to be effectively earthed. The entire electrical wiring installed within the Plants for the storage of flammable compressed gases is required to be of insulated armored cables of approved type. The cables are required to be mechanically continuous throughout and effectively earthed away from the vessels.”