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UNIT 20 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX
20-1) Who was the person that was instrumental in developing the firstCFCs?
20-2) Why it is important to review the SDS before an accident happens?
20-3) What should be done to treat frostbite to the skin?
20-4) What should be done if refrigerant comes into contact with the eyes?
20-5) High levels of refrigerant inhalation may lead to what?
20-6) How do you treat a person that has inhaled large amounts of refrigerant?
20-7) Can you physically feel that there is a lack of oxygen in a confined space?
20-8) What steps would you take if a person fell unconscious due to a lack of
oxygen in a confined space?
20-9) Most fatal refrigeration accidents have occurred due to which type
of refrigerant?
20-10) How would a refrigerant safety rating of A1 compare to B3?
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20-11) What is the maximum safe exposure level in parts per million by volume
called?
20-12) What is the difference between TLV, OEL, and PEL?
20-13) What is meant by lower flammable limit (LFL)?
20-14) How would the LFL of propane compare to ammonia?
20-15) What happens to CFCs and HCFCs that are exposed to a flame?
20-16) Can a DOT 39 cylinder be refilled? Why or why not?
20-17) What is the maximum temperature that a DOT 39 cylinder can be exposed to?
20-18) What is the purpose of a frangible disk on a nonrefillable refrigerant
20-19) Can a DOT 39 cylinder be recycled?
20-20) How often must a recovery cylinder be retested?
20-21) Do recovery cylinders need to be labeled?
20-22) Can a recovery cylinder be filled to 100% capacity?
20-23) What happens when a machinery room refrigerant sensor detects
above normal concentration levels of refrigerant?
20-24) What is the difference between pressure relief valves, rupture disks,
and fusible plugs?
20-25) How are machinery space refrigerant sensors maintained?
