Question 90Steam Plants - QMED

70% to pass

To prevent pulsations from developing in the boiler feed water lines, the discharge side of a reciprocating feed pump is equipped with a/an _______________.

Afeed water regulator
Bair chamber
Creed valve
Drelief valve
AI Explanation

The correct answer is B) air chamber. An air chamber is installed on the discharge side of a reciprocating feed pump to prevent pulsations in the boiler feed water lines. The air chamber acts as a cushion, absorbing the pressure fluctuations created by the intermittent discharge of the reciprocating pump. This helps to maintain a steady, continuous flow of feed water to the boiler, preventing damaging pressure pulsations. The other options are incorrect because: A) A feed water regulator controls the flow of feed water, but does not prevent pulsations. C) A reed valve is used to control the intake of the pump, not the discharge side. D) A relief valve is used to release excess pressure, not prevent pulsations.

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