Topics: ASHRAE/CMR
1: When a refrigerating machinery room is used, the emergency procedures shall be posted
- on a conspicuous card located near the evaporator
- outside the room, immediately adjacent to each door
- on a conspicuous card located near the compressor
- inside the room, immediately adjacent to each door
2: Setting a pressure relief device shall not exceed ___ of the design pressure
- 90%
- 100%
- 75%
- 80%
3: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by
- District Engineering Inspectors
- Commissioned Inspectors
- Master licensed Technician
- both a or b
4: Single compound Refrigerants are classified by what two criteria?
- Temperature range and hazardousness
- Flammability and temperature range
- Weight and color
- Flammability and toxicity
5: How many refrigerant classifications are there for flammability?
- 2
- 3
- 1
- 7
6: What is not a requirement of a Class T machine room?
- Fire hose connected to the building fire protection system.
- Self-closing doors
- Tight fitting doors
- Automatic ventilation
7: _____ and its alloys are suitable for use with ammonia systems.
- Copper
- Aluminum
- Zinc
- Magnesium
8: What is R-22?
- Chlorofluoromethane
- CCFCM
- Chlorodifluoromethane
- HFC
9: When an inspection is needed, how often must it be done?
- every 36 months
- every 24 months
- annually
- every 18 months
10: A restaurant is classified as a
- large mercantile occupancy
- mixed occupancy
- commercial occupancy
- public assembly occupancy
11: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
12: What would be the classification of a church?
- Industrial
- Large mercantile
- Institutional
- Place of assembly
13: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.
- 36
- 24
- 48
- 18
14: A declaration test is needed when the system contains more than
- 55 lbs
- 120 lbs
- 110 lbs
- 65 lbs
15: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or more
- vessels of 3 cubic feet or less
- vessels of 3 cubic feet or more
- vessels of 10 cubic feet or less
16: Trichlorofluoromethane is the name of what refrigerant?
- R-11
- R-113
- R-12
- R-502
17: Ammonia (NH3) is a group III refrigerant
- True
- False
18: A Category D fluid
- is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
- is when the design pressure does not exceed 150 psi
- a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
- Both a and b are correct
19: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- OSHA
- Section ASHREA 34
- Section 8 ASHREA 15 ASME unfired
20: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- regularly
- bi-annually
- annually
- quarterly
21: The discharge relief valve is located (9.4.6)
- between the compressor and oil separator
- between the compressor and reciever
- on top of the condensor
- between the compressor and the stop valve
22: What must be done to refrigerant pipes before being buried?
- Certified
- Leaked checked
- Coated
- Encased
23: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code
- licensed technician
- licensed welder
- competent welder
- welder qualified
24: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
- 99%
- 80%
- 90%
- 75%
25: Halogenated refrigerants cannot be used with what material?
- Stainless steel
- Magnesium alloy
- Aluminum
- Copper