FLOODING OF ENGINE ROOM DUE TO SEA VALVES NOT HOLDING :
G V S S SRIDHAR
The ship was bulk carrier and was enroute. Around 1000 hrs, it was found the engine room was getting flooded. It was decided to operate the emergency bilge suction valve and the ballast pump to which it was connected was changed over to fast operation. The sea suction valves were shut and the pump was run from the engine room bilges to over board. Since the engine cooling will be affected, the main engines were stopped and the pumping continued.
The auxiliary engine cooling water high temperature alarm was set at slightly higher. The cooling for auxiliary engine was changed over to aft peak tank, (re-circulation). It took nearly 5 hours for the situation to become normal.
Chief Engineer wanted to overhaul the standby sea water pump (PMS). 2/E, closed all valves and removed the motor. The vent cock was opened and found no water coming. 2/E thought that the valves are holding and he started opening the pump cover. When pump cover was removed with the help of tapping with the hammer, sudden rush of water came and started flooding. The vent cock was badly choked and the valves were not holding.