This standard specifies that flammable gases or vapors of combustible liquids (hereinafter referred to as explosive gases) may be present in the air in ships and offshore structures at concentrations that may cause ignition or explosion. Specifies explosion-proof battery-operated portable electric lamps (hereinafter referred to as lamps) used in locations.
JIS F 8425:1998 history
1998JIS F 8425:1998 Shipbuilding -- Flameproof portable electric lamps -- Dry cells and batteries type
1990JIS F 8425:1990 Flameproof portable electric lamps for marine use -- Dry cells and batteries type