ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise

2: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

3: Pressure vessels with an internal volume of 3 cubic feet or less

  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices
  • do not need pressure relief protection
  • shall use fusible plugs

4: All electrical work done on refrigeration systems must comply with

  • NEC and Massachusetts Modifications
  • OSHA
  • ASHREA-15 Section 9.2.1
  • Department of Energy

5: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

6: Halo-carbon refrigerants cannot be used with what material?

  • Stainless Steel
  • Aluminum
  • Copper
  • Magnesium alloy

7: Who approves containers for refrigerants?

  • D.O.D
  • D.O.E
  • E.P.A
  • D.O.T

8: What do you need to do when you install a new system?

  • Have it inspected
  • Document the superheat and subcooling reading
  • Insulate the suction line before you take a superheat reading
  • Add refrigerant

9: 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
  • 550
  • 100
  • 50

10: When a refrigerating machinery room is used, the emergency procedures shall be posted

  • outside the room, immediately adjacent to each door
  • on a conspicuous card located near the evaporator
  • on a conspicuous card located near the compressor
  • inside the room, immediately adjacent to each door

11: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

12: B3 refrigerants are considered

  • non-toxic but flammable
  • non-toxic but non-flammable
  • toxic and highly flammable
  • toxic but non-flammable

13: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 18
  • 22
  • 50
  • 33

14: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 550 lbs
  • 55 lbs
  • 660 lbs
  • 330 lbs.

15: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

16: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

17: A hotel is considered a _______ occupancy.

  • mercantile
  • commercial
  • residential
  • institutional

18: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

19: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c

20: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Leak checked
  • Certified
  • Classifed
  • Insulated and installed in a pipe duct (Encased)

21: R-410A is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • B-2
  • A-1
  • A-2

22: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

23: When air is ducted through a machine room that services occupied space, What must be done?

  • Ducted and sealed
  • Insulated and cross broke
  • Flanged and gasketed
  • Welded and seamed.

24: How much refrigerant can be stored in a mechanical room outside of the system?

  • 150
  • 330
  • 200
  • 100

25: Class A refrigerants are considered

  • flammable
  • non-toxic
  • non-flammable
  • toxic