Question 107Steam Plants - 1st Asst/Chief

70% to pass

Pumps normally used for fuel oil service are _______________.

Aexplosion proof gear pumps
Bpositive displacement rotary pumps
Cnonvented plunger pumps
Dtwo-stage centrifugal pumps
AI Explanation

The correct answer is B) positive displacement rotary pumps. Positive displacement rotary pumps are commonly used for fuel oil service on vessels because they are well-suited for pumping viscous liquids like fuel oil. These pumps create a constant flow by trapping a fixed volume of liquid and forcing it through the discharge line. This makes them reliable and efficient for handling fuels, which is a critical safety requirement for fuel oil systems. The other answer choices are not as suitable for fuel oil service. Explosion-proof gear pumps may be used, but are not the normal choice. Nonvented plunger pumps and two-stage centrifugal pumps are not typically utilized for fuel oil service on vessels.

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