Topics: ASHRAE/CMR
1: R-22 falls under which safety classification?
- A-1
- A-2
- B-2
- B-1
2: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
- compressor
- outside the machinery room
- boiler
- evaporator
3: The main cause of enacting the "no vending rule" of July 1st 1992 was
- global warming potential
- ozone depletion
- both a & b
- None of the above
4: What must be done to refrigerant pipes before being buried?
- Encased
- Coated
- Certified
- Leaked checked
5: When an inspection is needed, how often must it be done?
- every 36 months
- every 24 months
- annually
- every 18 months
6: What is the refrigerant dichlorodifluoromethane?
- R-12
- R-22
- R-123
- R-134A
7: What is the refrigerant chlorodifluoromethane?
- R-123
- R-134a
- R-22
- R-12
8: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- design pressure
- low pressure
- critical pressure
- high pressure
9: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 33
- 18
- 22
- 50
10: What would be the classification of a church?
- Industrial
- Large mercantile
- Institutional
- Place of assembly
11: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
- True
- False
12: Which occupancy can ammonia be used in?
- industrial
- commercial
- redifential
- depends on the quantity of freon
13: Halo-carbon refrigerants cannot be used with what material?
- Magnesium alloy
- Stainless Steel
- Aluminum
- Copper
14: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- annually
- quarterly
- regularly
- bi-annually
15: The certificate of inspection
- shall be posted and protected from dirt, water, and other elements
- shall be posted on the compressor shell or electrical panel at the unit
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be authorized by a notarized insurance company
16: Fusible plugs shall not be used with pressure vessels of
- 3 cubic feet or less
- 15 square feet or less
- 3 cubic feet or more
- 15 cubic feet or more
17: Who approves containers for refrigerants?
- E.P.A
- D.O.D
- D.O.T
- D.O.E
18: R-123 belongs to Group
- B-3
- B-2
- A-3
- B-1
19: Pressure vessels with an internal volume of 3 cubic feet or less
- shall use fusible plugs
- shall use pressure relief devices
- do not need pressure relief protection
- shall use pressure relief devices or fusible plugs
20: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-2
- B-1
- A-1
- B-2
21: Indirect systems using Group II refrigerants
- shall be used for mechanical equipment only
- shall be used in refrigeration system in excess of 1,000 lbs
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
- shall be used in refrigeration system less than 1,000 lbs
22: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-113
- R-11
- R-12
23: The Board of Boilers adopts by reference
- MSCA Code
- the 1997 ANSI/ASHRAE Safety Code
- Montreal Protocol Safety Code
- the MACS Pressure Vessel Code of Massachusetts
24: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 600F
- 800F
- 1000F
- 700F
25: Ammonia belongs to Group
- A-2
- A-1
- B-1
- B-2