Topics: ASHRAE/CMR
1: What must be done to refrigerant pipes before being buried?
- Leaked checked
- Encased
- Certified
- Coated
2: What is the refrigerant dichlorodifluoromethane?
- R-123
- R-22
- R-134A
- R-12
3: What would be the classification of a church?
- Place of assembly
- Large mercantile
- Institutional
- Industrial
4: Joints in refrigeration piping must be _____ before being covered?
- Leak tested
- Insulated
- Pressurized
- Inspected
5: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- low side of the system
- the liquid side of the system
- the vapor side of the system
- high side of the system
6: What kind of material can't be used on the outlet of a relief valve?
- Copper
- Stainless Steel
- Aluminum
- PVC
7: Halo-carbon refrigerants cannot be used with what material?
- Aluminum
- Magnesium alloy
- Stainless Steel
- Copper
8: How many refrigerant classifications are there for toxicity?
- 2
- 3
- 1
- 5
9: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- rupture plug
- fusion plug
- relief plug
- fusible plug
10: Who approves containers for refrigerants?
- D.O.D
- D.O.E
- E.P.A
- D.O.T
11: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- explosion precautions must be taken
- the owner shall be informed
- gas masks must be worn
- no flames shall be permitted
12: 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
- boiler
- evaporator
- outside the machinery room
- compressor
13: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- shall have a pressure limiting device installed on the high side of the system
- shall be inspected by the Boiler of Inspectors bi-annually
- shall have a pressure limiting device and a pressure relief valve installed
- does not require a pressure-limiting device
14: What refrigerant doesn't have to be classifted?
- R-134a
- R-718
- R-711
- R-717
15: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Place of assembly
- Industrial
- Instituional
16: Pressure vessels with an internal volume of 3 cubic feet or less
- shall use pressure relief devices or fusible plugs
- do not need pressure relief protection
- shall use fusible plugs
- shall use pressure relief devices
17: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
18: The discharge relief valve is located (9.4.6)
- between the compressor and oil separator
- between the compressor and the stop valve
- between the compressor and reciever
- on top of the condensor
19: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
20: What is R-22?
- Chlorofluoromethane
- HFC
- Chlorodifluoromethane
- CCFCM
21: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 22
- 33
- 18
22: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
23: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- CFC-11
- ammonia
- Lithium bromide
- HCFC-123
24: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- commercial occupancy
- public assembly occupancy.
- business occupancy
- mercantile occupancy
25: No open flames are allowed in the machinery room unless?
- Only when combustion air is provided from outside of the machinery room
- Never can be allowed
- Approved by the installing contractor
- Approved by the authorized person