Question 1

During a routine engine room round, you notice the sea water cooling system's pressure gauge is reading lower than normal and the main engine's jacket water temperature is starting to rise. What should you do?

Accepted Answer

Report the readings to the duty engineer immediately, as a falling sea water pressure combined with rising jacket water temperature can indicate a developing cooling system problem (e.g. a blocked sea strainer, failing pump, or fouled cooler) that, if left unaddressed, can lead to overheating and serious engine damage Cooling system problems often give early warning signs through gauge readings well before an alarm activates — a rating who notices and promptly reports an abnormal trend gives the duty engineer the chance to investigate and correct the issue (e.g. clearing a blocked strainer) before it becomes a main engine shutdown or damage event. Adjusting or ignoring gauges removes this early warning and can allow a developing fault to progress unchecked.

Question 2

You're draining a thermal oil system that was running normally a short time ago. Before opening the drain point, what should you confirm?

Accepted Answer

That the system has cooled and depressurised, and you are positioned clear of the drain point's discharge path On the dredger MV Amazone, two crew members draining a thermal oil system after months of contamination were sprayed with hot oil, suffering severe burns. The investigation found company procedures lacked clear instructions for safe drainage — confirming the system has cooled and depressurised, and standing clear of the discharge path, are essential before opening any drain point on a hot oil system.

Question 3

A thermal oil system has been contaminated and needs draining for cleaning. The written procedure tells you to open the drain valve but doesn't specify a cooling-down period or PPE. What should you do?

Accepted Answer

Treat the gap as a hazard in its own right: apply a suitable cooling/depressurising period and full PPE before proceeding, and raise the procedure gap with the Chief Engineer The FEBIMA investigation into the MV Amazone incident found that although the crew followed company procedures, those procedures lacked clear instructions for safely draining a thermal oil system. A procedure that's silent on cooling time and PPE for a hazardous task is a gap to be closed before the job starts — not a green light to skip those precautions.