Question 349Steam Plants - 1st Asst/Chief

70% to pass

Before placing the jacking gear in operation on a main turbine unit, you must always insure that _______________.

Athe condensate system is operating
Bthe main lube oil system is operating
Cthe gland seal steam system is operating
Dthe main salt water circulating pump is operating
AI Explanation

The correct answer is B) the main lube oil system is operating. Before placing the jacking gear in operation on a main turbine unit, you must ensure that the main lube oil system is operating properly. This is because the jacking gear is used to rotate the turbine shaft when the main unit is not running, and the lube oil system is essential for providing lubrication to the turbine bearings during this operation. Failure to have the lube oil system functioning could result in damage to the turbine bearings and other components. The other options (A, C, and D) are not directly related to the safe operation of the jacking gear and do not need to be confirmed before its use.

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Official Resources
46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center
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