Regulations & SafetyCâu 46 / 240
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.125°F
b.212°F
c.300°F
d.500°F
Giải thích
Refrigerant cylinders should never be exposed to temperatures above 125°F, because heat raises the internal pressure and can cause the cylinder to rupture or activate its relief device. 212°F, 300°F, and 500°F are far beyond safe limits. Cylinders should be kept in a cool, shaded, ventilated place and secured upright.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Under the post-2019 leak repair rules, what is the annual leak rate threshold that triggers required repairs for a comfort-cooling appliance containing 50 or more pounds?
- 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 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?
- 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?
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