Topics: ASHRAE/CMR
1: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.
- 80%
- 90%
- 100%
- 75%
2: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- the owner shall be informed
- no flames shall be permitted
- gas masks must be worn
- explosion precautions must be taken
3: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
- True
- False
4: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
5: Class T machine room
- shall have refrigerant leak detecting systems installed inside and outside the room
- shall have remote controls to stop the action of the refrigerant compressor
- has no flame producing apparatus permanently installed
- shall include closets used for setting equipment
6: A machine room with a refrigerant system using ammonia shall
- be provided with a continuously operated ventilation system
- be considered a non-hazardous location in accordance with National Electrical code
- have no flame producing apparatus permanently installed and operated
- All of the above
7: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
8: What would be the classification of a church?
- Large mercantile
- Place of assembly
- Industrial
- Institutional
9: Who approves containers for refrigerants?
- E.P.A
- D.O.E
- D.O.D
- D.O.T
10: A class B2 refrigerant is considered
- non-toxic and non-flammable
- toxic and somewhat flammable
- toxic and non-flammable
- non-toxic and highly flammable
11: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
- public assembly occupancy
- commercial occupancy
- illegal occupancy
- institutional occupancy
12: The Department that certifies the transportation of refrigerant is the
- EPA
- RSES
- DOT
- EPO
13: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
14: A movie theater would be considered a
- institutional occupancy
- mixed occupancy
- public assembly occupancy
- commercial occupancy
15: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 660 lbs
- 550 lbs
- 55 lbs
- 330 lbs.
16: What refrigerant doesn't have to be classifted?
- R-134a
- R-717
- R-718
- R-711
17: What kind of material can't be used on the outlet of a relief valve?
- PVC
- Stainless Steel
- Aluminum
- Copper
18: Halo-carbon refrigerants cannot be used with what material?
- Stainless Steel
- Magnesium alloy
- Aluminum
- Copper
19: The certificate of inspection
- shall be authorized by a notarized insurance company
- shall be posted on the compressor shell or electrical panel at the unit
- shall be posted and protected from dirt, water, and other elements
- shall be $20 and an additional fee of $1 for each tone above 20 tons
20: When a refrigerating machinery room is used, the emergency procedures shall be posted
- inside the room, immediately adjacent to each door
- on a conspicuous card located near the compressor
- on a conspicuous card located near the evaporator
- outside the room, immediately adjacent to each door
21: Whoever owns/uses a refrigeration or air conditioning system covered by this code
- must notify the Department of Public Safety prior to starting the system
- shall be licensed by the Commonwealth of Massachusetts according to CMR 522
- shall make application for inspections to the Chief of Inspectors
- None of the above
22: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
23: Ammonia (NH3) is a group III refrigerant
- True
- False
24: B3 refrigerants are considered
- toxic and highly flammable
- non-toxic but flammable
- toxic but non-flammable
- non-toxic but non-flammable
25: 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