Topics: ASHRAE/CMR
1: Who approves containers for refrigerants?
- E.P.A
- D.O.D
- D.O.T
- D.O.E
2: A movie theater would be considered a
- public assembly occupancy
- mixed occupancy
- commercial occupancy
- institutional occupancy
3: What does safe access mean?
- Locked doors
- Well-lit exit signs
- A clear unobstructed path to the equipment and controls
- OSHA approved
4: Where are the three places that the discharge from an ammonia relief valve be piped?
- To chemical neutralizing tank only
- Underground, into drain, into mechanical room
- Atmosphere, Tank containing water, where the AHJ indicates.
- None of the above.
5: What is the refrigerant chlorodifluoromethane?
- R-134a
- R-123
- R-22
- R-12
6: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
7: Class A refrigerants are considered
- flammable
- toxic
- non-toxic
- non-flammable
8: Which refrigerant class listed below is the most flammable?
- A-1
- A-3
- C-3
- B-2
9: What is not a requirement of a class T machine room?
- self-closing doors
- automatic ventilation
- tight fitting doors
- fire hose connection to the building fire protection system
10: A relief valve shall be located at least ___ above grade.
- 36'
- 10'
- 25'
- 15'
11: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the return air ducted system
- Machinery rooms need not be vented
- the mechanical room housing the refrigeration system
- the outdoors
12: 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
13: A class B1 refrigerant is considered
- toxic but non-flammable
- toxic and somewhat flammable
- non-toxic but highly flammable
- non-toxic and non-flammable
14: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- shall be inspected by the Boiler of Inspectors bi-annually
- shall have a pressure limiting device and a pressure relief valve installed
- shall have a pressure limiting device installed on the high side of the system
- does not require a pressure-limiting device
15: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 350
- 50
- 100
- 550
16: Which refrigerant class listed below is the most flammable?
- A2
- C3
- A3
- B2
17: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
- 1,000
- 6.6
- 110
- 330
18: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
19: B3 refrigerants are considered
- toxic and highly flammable
- non-toxic but flammable
- non-toxic but non-flammable
- toxic but non-flammable
20: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
21: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 15
- 75
- 55
- 50
22: NH3 is
- R-718
- ammonia
- R-508A
- lithium bromide
23: The discharge relief valve is located (9.4.6)
- between the compressor and reciever
- on top of the condensor
- between the compressor and oil separator
- between the compressor and the stop valve
24: Most CFC's are
- flammable
- toxic
- inert
- inert but toxic
25: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c