What is the best method to extinguish an LNG fire?

The most effective method to extinguish an LNG (liquefied natural gas) fire is by using dry chemical agents. LNG fires typically involve flammable gas that can produce a very high temperature combined with the unique characteristics of its combustion, which requires strategic extinguishing methods.

Dry chemical agents work effectively by interrupting the combustion process. They do this by forming a barrier between the fuel and oxygen or by chemically interfering with the fire reaction itself. This makes them suitable for extinguishing LNG fires that can be aggressive and difficult to combat using conventional methods.

When considering the other options, water spray is generally ineffective for LNG fires because while it may cool the surrounding structures, it can also produce steam, which can spread the fire. Foam, while useful for other types of flammable liquids, is less effective on LNG due to the volatility of the gas, and may not adequately smother the flames or prevent re-ignition. CO2 discharge can work but is usually used as a secondary method since it may not be sufficient to deal with the high heat and can displace oxygen without directly smothering the fire effectively.

Thus, the use of dry chemical agents represents the best choice in the context of LNG fire extinguishment, due to their ability