Regulations & SafetyCâu 47 / 240
A technician is servicing a chiller in a small equipment room with poor ventilation. Which hazard is the greatest immediate concern if refrigerant leaks in that confined space?
a.Electric shock from the refrigerant
b.The refrigerant catching fire from the light switch
c.The room becoming too humid to work
d.Oxygen displacement leading to asphyxiation
Giải thích
Most refrigerants are heavier than air and can accumulate in low or confined spaces, displacing oxygen and causing asphyxiation, which is the greatest immediate danger in a poorly ventilated room. Refrigerants do not conduct a shock hazard on their own, most common refrigerants are not readily flammable, and humidity is not the concern. Proper ventilation and refrigerant monitors help protect against oxygen displacement.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A refrigerated warehouse uses a commercial refrigeration system with 300 pounds of refrigerant. What annual leak rate threshold applies to commercial refrigeration under the current rules?
- An industrial process refrigeration system in a chemical plant contains 1,000 pounds of refrigerant. Which annual leak rate threshold applies?
- A technician stores refrigerant cylinders in a work van during summer. To avoid dangerous pressure buildup, cylinders should not be exposed to temperatures above:
- While transferring liquid refrigerant, a technician gets a splash on bare skin. What injury is most likely, and what is the correct first aid?
- Which personal protective equipment (PPE) is most appropriate whenever a technician handles pressurized refrigerant?
- A technician needs to warm a refrigerant cylinder to raise its pressure during charging. Which method is safe?
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