While on watch at sea, you notice the main lube oil pump suction vacuum has been increasing. To correct this you should __________.
⢠Main lube oil system suction side and what causes increasing vacuum ⢠How duplex strainers are cleaned or switched over safely while underway ⢠Risks of introducing air or losing suction on the main lube oil pump
⢠Is an increasing suction vacuum usually a sign of a blockage/restriction or a leak on the suction side? ⢠Which actions can safely clear a suspected restriction without opening the system to atmosphere while the main engine is running? ⢠Which option best reflects standard, conservative engineering practice for protecting the main engine from lube oil starvation?
⢠Verify which actions would maintain pump suction and avoid air ingestion into the lube oil system while underway ⢠Check which option involves opening the system (covers, drains, vents) with the engine still running and why that may be unsafe ⢠Consider how a duplex strainer is normally cleaned or restored to proper flow when differential or suction vacuum rises
No comments yet
Be the first to share your thoughts!