Practice Test GeeksCARO - Certified Assistant Refrigeration Operator Practice Test
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Ammonia Refrigeration Safety Flashcards

7 cards from real CARO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Under CERCLA/EPCRA, what is the reportable quantity (RQ) for an ammonia release within 24 hours?

    Answer: 100 lb

    Releasing 100 lb or more of ammonia in 24 hours must be reported to the National Response Center.

  2. Why should ammonia never be mixed with chlorine bleach during cleanup?

    Answer: It produces toxic chloramine gases

    Ammonia and chlorine bleach react to form toxic chloramine vapors.

  3. Why is a water spray or fog sometimes used during an ammonia vapor release?

    Answer: Ammonia is highly soluble in water, so fog absorbs vapor

    Ammonia dissolves readily in water, so a fog curtain can knock down vapor, though runoff must be contained.

  4. Which OSHA standard governs training for workers responding to hazardous ammonia releases?

    Answer: 1910.120 HAZWOPER

    Emergency responders to hazardous substance releases must be trained under HAZWOPER, 29 CFR 1910.120.

  5. Before opening an ammonia line for maintenance, what must be done first?

    Answer: Isolate, lock out, and pump down/evacuate the section

    Lines must be isolated, locked out, and pumped out of refrigerant before being opened.

  6. What is the approximate autoignition temperature of ammonia?

    Answer: 1,200°F (651°C)

    Ammonia's autoignition temperature is about 1,200°F (651°C), making ignition difficult.

  7. During a large ammonia release, how should non-responding employees evacuate?

    Answer: Upwind or crosswind to the designated assembly point

    Evacuating upwind or crosswind keeps people out of the plume and moves them to a safe assembly point.