What type of fire extinguisher is required for industrial plants with LP Gas storage containers?

In industrial plants with LP Gas storage containers, the recommended fire extinguisher type is a 20 lbs. dry chemical extinguisher with a BC rating. This is primarily because LP Gas fires involve flammable liquids and gases, which require agents that can effectively suppress such fires by interrupting the combustion process.

Dry chemical extinguishers, particularly those with BC ratings, are designed to extinguish flammable liquid fires (Class B) and electrical fires (Class C) by creating a barrier between the fuel and the oxygen needed for combustion. They are effective at quickly controlling fires involving LP Gas, which can ignite rapidly and burn intensely.

Water-based extinguishers, though sometimes effective for certain classes of fires, are not suitable for flammable gas fires because water can spread the fire or create hazardous situations. Foam extinguishers can be useful against flammable liquid fires but may not be the best choice for LP Gas, as they are less effective in scenarios with highly flammable gases. CO2 extinguishers are designed for electrical and some liquid fires but are not as effective against LP Gas fires due to their inability to displace oxygen effectively enough in a large area, making dry chemical extinguishers the preferred option in this context.