Question 21Safety & Environmental - Assistant Engineer

The correct answer is A) secure the source of gas, then extinguish the fire. When dealing with a liquefied natural gas (LNG) fire, the priority is to first secure the source of the gas leak. This is because continuing gas flow will simply reignite the fire even if it is extinguished. Once the gas source is secured, the fire can then be safely extinguished, typically using dry chemical or carbon dioxide extinguishers. Attempting to extinguish the fire first without securing the gas source is dangerous and will not effectively resolve the situation. The other options are incorrect because: B) extinguishing the fire first is the wrong order of operations, C) carbon dioxide is one type of acceptable extinguishing agent but not the only option, and D) dry chemical extinguishers are also acceptable but should not be the only method used.