How does a pump operator detect a loss of prime?

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Prepare for the Ben Hirst Fire Apparatus Driver and Operator Exam 1. Utilize flashcards and multiple choice questions, each with hints and explanations. Ace your exam!

Multiple Choice

How does a pump operator detect a loss of prime?

Explanation:
Loss of prime is detected by watching the pump’s suction and discharge performance. When prime is lost, the pump can’t pull water, so suction pressure falls and water delivery drops. The intake gauge reading decreases and the discharge pressure or flow also drops. If you re-prime successfully, those readings return toward normal. Other signs like an odor, bubbles in the water, or feeling vibration aren’t reliable indicators of a lost prime and could come from other issues.

Loss of prime is detected by watching the pump’s suction and discharge performance. When prime is lost, the pump can’t pull water, so suction pressure falls and water delivery drops. The intake gauge reading decreases and the discharge pressure or flow also drops. If you re-prime successfully, those readings return toward normal.

Other signs like an odor, bubbles in the water, or feeling vibration aren’t reliable indicators of a lost prime and could come from other issues.

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