What should you ensure is operating before entering a cargo pumproom?

Ensuring that the ventilation system is operating before entering a cargo pumproom is critical for safety reasons. Cargo pumprooms can contain flammable vapors and hazardous gases that could pose serious health risks if not properly ventilated. An operational ventilation system helps to dilute and remove these hazardous substances, providing a safer atmosphere for personnel entering the space.

Maintaining adequate airflow reduces the chances of an explosive environment which could occur due to the accumulation of flammable gases. This is a key aspect of safe practices in maritime operations, especially in areas where cargo that may release harmful vapors is present.

While having an alarm system, lighting system, and fire suppression system are also important safety measures, they do not address the immediate need for safe air quality in the hangabout of the pumproom environment, which makes the functionality of the ventilation system a priority when considering entry into such a potentially dangerous space.