Regulations & SafetyCâu 48 / 240
While transferring liquid refrigerant, a technician gets a splash on bare skin. What injury is most likely, and what is the correct first aid?
a.A chemical burn; rinse with vinegar
b.Frostbite from rapid evaporation; flush with plenty of lukewarm water and seek medical care
c.An electrical burn; apply ice directly
d.No injury; liquid refrigerant is harmless on skin
Giải thích
Liquid refrigerant evaporates rapidly and absorbs heat from the skin, causing frostbite, so the correct first aid is to flush the area with plenty of lukewarm (not hot) water and seek medical attention. Vinegar is for chemical exposures, ice would worsen frostbite, and liquid refrigerant is definitely not harmless. Wearing gloves and safety glasses prevents most of these injuries.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- 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:
- 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?
- 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?
- A technician is brazing near a line that still contains R-22 vapor. Why is exposing refrigerant to an open flame or very high heat dangerous?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với EPA Section 608 Technician Certification Exam · Quy trình kiểm tra