RETA Certified Assistant Refrigeration Operator (CARO)

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An operator is responding to an ammonia leak in a machinery room where the ammonia concentration is unknown but a visible cloud is present. What is the minimum level of Personal Protective Equipment (PPE) required for entry?

Level C: Full-face air-purifying respirator and chemical-resistant clothing Level D: Standard work uniform with safety glasses and gloves Level B: Self-contained breathing apparatus (SCBA) with chemical-resistant clothing Level A: Fully encapsulating, vapor-tight suit with a self-contained breathing apparatus (SCBA)

Correct Answer:

Level A: Fully encapsulating, vapor-tight suit with a self-contained breathing apparatus (SCBA)

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