On a vessel you can sometimes be faced with conflicting priorities.This accelerated the cooling of the cargo and reduction of its volume, and hence the pressure inside the cargo tanks.Īlthough the IGS alarm sounded at the time of the low pressure, the crew were otherwise engaged in the tie-up procedures, and did not appreciate the rate of the pressure drop. The company investigation found, among others, that During the vessel’s approach to the berth, which lasted for about 2.5 hours, a constant rain was falling. Unloading then proceeded without incident and once empty the vessel departed. ![]() ![]() This was corrected by the addition of inert gas from the inert gas system (IGS) before unloading commenced. In the early morning hours a tanker docked to commence unloading. Contrary to port procedures and best practices, there was a negative pressure in the cargo tanks of about 270 mm/wg.
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