Where is the most likely location for a cargo fire to occur on a tanker?

The pumproom is the most likely location for a cargo fire to occur on a tanker due to its function and the materials involved. The pumproom houses essential equipment such as pumps, valves, and piping for transferring cargo. Given that these systems are in close proximity to flammable liquids, any leaks or spills can create a hazardous environment.

Additionally, the operational activities in the pumproom—such as handling cargo and potential maintenance—can introduce ignition sources (like electrical equipment or hot surfaces). This makes it a critical area where both flammable vapors and potential ignition sources can coexist, significantly increasing the risk of a fire.

Other locations, while they may have their risks, do not present the same combination of flammability and ignition potential as the pumproom. For instance, the vent header is designed to safely release vapors, and the midships house and main deck manifold do not concentrate the risk factors as closely as the pumproom does.