In case of flame impingement on an LPG/LNG storage tank during a car fire, what is the immediate action needed?

The immediate action needed in the case of flame impingement on an LPG/LNG storage tank during a car fire is to cool the tank. This is crucial for several reasons. Cooling the tank helps to maintain its structural integrity by preventing the pressure inside the storage tank from increasing to dangerous levels due to the heat. In the presence of flame impingement, the heat can cause the contents of the tank to expand, potentially leading to a catastrophic failure or explosion.

Cooling the tank involves applying water or other extinguishing agents to the exposed surfaces. This action not only protects the tank itself but also allows firefighters to focus on containing the situation safely without escalating the risk of a fireball or explosion. By managing the temperature of the tank, crews can minimize the likelihood of a massive failure caused by heat and limit collateral damage to the surroundings.

In terms of the other options, igniting a firebreak is not appropriate in this situation as it may exacerbate the risk of fire spreading. While evacuating the area is an important safety protocol, it does not address the immediate threat to the tank and may need to be implemented alongside tank cooling efforts. Sealing the tank is not advisable either, as it could trap pressure inside, increasing the risk of an explosion