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•Mainly contain propane and butane.
•Explosion and fire are the main hazards associated with them.
•They exist as gas in ambient condition but can be liquefied under little pressure and on release of this pressure, they again becomes gases.
•Stored as liquid and transmitted by high pressure pipeline for industrial and domestic use.
•Water is not good extinguisher for LPG as its vapor density is 0.5 when it is liquid.
•LEL and UEL is 2 to 10%.
•Its flame can travel back to the source giving flash back.
•It can cause cold burn to the skin due to its rapid vaporization and lowering the temperature.
•Its very high concentration in air, in anesthetic and on dilution, it becomes asphyxiate.
•Heavy leaks give hissing sound or icing in the area of leak.
•Small leaks may be detected by soap solution.
•Never use naked flame to detect it.
•In empty tank may still contain LPG vapor and if air enters in empty tank, it can form explosive mixture.
•Therefore it must be purged by inert gas first and gas test should be made before doing any work on it.
•Location and other Safety Aspects:
•LPG tanks should be sited on or under ground.
•LPG vessels should not be stored on one above other.
•Storage surface should be well concrete.
•Slope to be given to the ground beneath the vessels, to drive away any dripping or leakage toward a safe area.
•Catchments pit should be 3 meter away from LPG storage area
