A technician is disconnecting service hoses that may still hold liquid refrigerant under pressure. What personal protection belongs on that task?
Correct Answer
A) Safety glasses and gloves, because liquid refrigerant striking skin or eyes causes freeze burns
Liquid refrigerant boils the instant it leaves a pressurized hose, and boiling absorbs heat from whatever it lands on. Skin freezes almost immediately, and an eye exposed to a jet of liquid can be permanently damaged. Safety glasses and gloves are the basic protection for any work where liquid refrigerant might escape, and a hose that felt empty can still hold a slug of liquid. Eye exposure is treated by flushing with water and getting medical attention, not by rubbing or warming the eye.
Why This Is the Correct Answer
The hazard from escaping liquid refrigerant is thermal. Rapid boiling pulls heat out of skin and eye tissue fast enough to cause a freeze injury on contact, so eye protection and gloves are the protection that matches the actual risk.
Why the Other Options Are Wrong
Option B: A respirator, because refrigerant vapor is absorbed through the lungs as a systemic poison in seconds
Common refrigerants are not systemic poisons taken up through the lungs in this way. The inhalation hazard is oxygen displacement in a confined space, which ventilation and monitoring address.
Option C: Rubber-soled boots, because escaping refrigerant carries an electrical charge to ground
Refrigerant carries no electrical charge. Electrical protection is a real and separate concern on a service call, but it has nothing to do with breaking a pressurized hose connection loose.
Option D: A face shield alone, since gloves reduce the feel needed to break a fitting loose cleanly
Gloves are exactly what protects the hands doing the work, and a liquid jet reaches them first. Trading them for a face shield leaves the most exposed part of the body uncovered.
Memory Technique
Liquid out of a hose is instant winter. Glasses on the eyes, gloves on the hands, every time.
Reference Hint
Liquid refrigerant causes frostbite on contact; eye and hand protection are required when handling refrigerant under pressure.
More epa-608-type-2 Questions
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A data sheet for an unfamiliar refrigerant lists a boiling point of about fifty-five degrees Fahrenheit at atmospheric pressure. What does that tell a technician holding Core and Type II certification?
A technician holds Core, Type I and Type III certification and is sent to recover the charge from a twenty ton rooftop unit charged with R-410A. What does that combination of sections allow on this job?
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On a new installation the line set is brazed to a factory charged outdoor unit and an indoor coil shipped under a nitrogen holding charge, with the outdoor unit's service valves still closed. What does the recovery requirement call for before that brazing?
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