In order to take suction on the lube oil drain tank cofferdam with the bilge pump shown in the illustration, how many suction side valves must be open? GS-0042

Correct Answer: Option B — Two

To take suction from a specific cofferdam, the operator must open the suction valve at the cofferdam and the corresponding suction manifold valve leading to the bilge pump. This two-valve alignment ensures a clear, isolated path for the pump to draw fluid from the intended location.