CCT Safety Standards & Regulatory Compliance 2 — Questions and Answers
Question 1: Which OSHA standard specifically governs control of hazardous energy (lockout/tagout) for Casper technicians servicing refrigeration equipment?
- 29 CFR 1910.147 (Correct answer)
- 29 CFR 1910.132
- 29 CFR 1910.303
- 29 CFR 1910.101
Correct answer: 29 CFR 1910.147
29 CFR 1910.147 is OSHA's Control of Hazardous Energy standard requiring lockout/tagout procedures before servicing equipment.
Question 2: A Casper technician discovers a refrigerant leak exceeding EPA Section 608 reporting thresholds in a commercial appliance. What is the required action?
- Repair the leak within 30 days or retrofit/retire the equipment (Correct answer)
- Immediately evacuate the building and call the fire department
- Log the leak and continue operation until the next scheduled maintenance
- Replace the refrigerant charge and document the addition only
Correct answer: Repair the leak within 30 days or retrofit/retire the equipment
EPA Section 608 requires that leaks exceeding threshold rates be repaired within 30 days, or equipment must be retrofitted or retired.
Question 3: What is the minimum recovery efficiency required when removing refrigerant from appliances manufactured after November 15, 1993, with a compressor rated at 200+ horsepower?
- 90%
- 80%
- 95% (Correct answer)
- 70%
Correct answer: 95%
EPA regulations require 95% recovery efficiency for very high-pressure appliances with compressors of 200 HP or more manufactured after November 15, 1993.
Question 4: Under ASHRAE Standard 15, what is the primary purpose of a machinery room for refrigeration systems?
- To contain refrigerant leaks and protect building occupants (Correct answer)
- To reduce equipment noise levels below OSHA limits
- To provide a centralized location for all electrical controls
- To maintain equipment at optimal ambient temperature
Correct answer: To contain refrigerant leaks and protect building occupants
ASHRAE Standard 15 requires machinery rooms to contain refrigerant leaks so that building occupants outside the room are protected from exposure.
Question 5: Which document must a certified technician obtain before purchasing refrigerants regulated under EPA Section 608?
- EPA Section 608 technician certification card (Correct answer)
- State contractor license number
- OSHA 30-hour training card
- Manufacturer service authorization letter
Correct answer: EPA Section 608 technician certification card
EPA Section 608 requires that only certified technicians purchase regulated refrigerants, and sellers must verify certification before sale.
Question 6: When working with ammonia refrigerant (R-717), which respiratory protection is required for concentrations above OSHA's IDLH level of 300 ppm?
- Self-Contained Breathing Apparatus (SCBA) (Correct answer)
- Half-face air-purifying respirator with ammonia cartridge
- N95 particulate respirator
- Full-face air-purifying respirator with acid-gas cartridge
Correct answer: Self-Contained Breathing Apparatus (SCBA)
At or above IDLH concentrations, only atmosphere-supplying respirators like SCBA provide adequate protection.
Question 7: A Casper technician is asked to service a unit containing R-22. Under current EPA regulations, what is the technician's obligation regarding this refrigerant?
- Recover R-22 properly; it cannot be vented and must be reclaimed or destroyed (Correct answer)
- Vent R-22 only in quantities below 100 pounds since it is being phased out
- Replace all R-22 immediately with an approved HFO substitute
- R-22 is exempt from venting prohibitions as a legacy refrigerant
Correct answer: Recover R-22 properly; it cannot be vented and must be reclaimed or destroyed
R-22 is still subject to EPA venting prohibitions regardless of phase-out status; it must be properly recovered and sent to a reclaimer.
CCT Safety Standards & Regulatory Compliance 2
Which OSHA standard specifically governs control of hazardous energy (lockout/tagout) for Casper technicians servicing refrigeration equipment?