EPA Section 608 — Type III
Safety: practice questions
Our EPA 608 Type III bank has 7 questions on this topic. Here are 4 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
What safety equipment does ASHRAE Standard 15 require in mechanical equipment rooms with chillers?
- Sprinklers only
- Refrigerant detectors/alarms and mechanical ventilation
- Nothing
- An open window or door and a sign warning people not to enter the room
Show the answer
B. Refrigerant detectors/alarms and mechanical ventilation — Detectors warn before refrigerant levels reach exposure limits.
Question 2
Which ASHRAE safety classification applies to R-123?
- A2L
- A3
- B1 (higher toxicity, no flame propagation)
- A1
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C. B1 (higher toxicity, no flame propagation) — R-123's toxicity requires careful handling and monitoring.
Question 3
What is a danger of exposing R-11 or R-123 to an open flame?
- It cools the room
- It makes the refrigerant cleaner by burning off oil and moisture
- Nothing
- It decomposes into toxic gases such as phosgene
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D. It decomposes into toxic gases such as phosgene — Avoid open flames and hot surfaces near refrigerant leaks.
Question 4
What should you do if the refrigerant alarm in a chiller room sounds?
- Light a match to find the leak
- Stay and finish the job
- Leave the room and only re-enter with self-contained breathing apparatus if needed
- Turn off the alarm and continue
Show the answer
C. Leave the room and only re-enter with self-contained breathing apparatus if needed — Refrigerant can displace oxygen.