What action should be taken upon loss of firemain?

Securing all hot work and determining the cause of the loss of firemain is critical for safety and operational integrity. The firemain system is essential for firefighting capabilities onboard a vessel, and any loss of pressure or failure in this system poses a significant risk. It is paramount to stop any activities that could potentially ignite a fire, especially hot work such as welding or cutting, which generates sparks or heat.

By securing hot work, the crew mitigates the risk of a fire occurring in the event of an emergency. Additionally, determining the cause of the firemain loss is vital to restore the system to operational status and ensure the safety of all personnel onboard. This proactive approach enables the crew to address the issue effectively and takes precedence over all normal operations to maintain a safe working environment.