ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many different groups of refrigerants are there?

  • 3
  • 15
  • 7
  • 11

2: Joints in refrigeration piping must be _____ before being covered?

  • Insulated
  • Pressurized
  • Inspected
  • Leak tested

3: What is an egress?

  • An entrance or exit
  • An escape route
  • A valve put on the low side of the system to prevent frosting
  • A code violation

4: Ammonia belongs to Group

  • A-1
  • B-2
  • B-1
  • A-2

5: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class T machinery room
  • Class B machinery room
  • Class M machinery room
  • Class A machinery room

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

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

7: What refrigerant doesn't have to be classifted?

  • R-717
  • R-134a
  • R-711
  • R-718

8: 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.

9: R-22 falls under which safety classification?

  • A-2
  • A-1
  • B-2
  • B-1

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

  • 33
  • 50
  • 18
  • 22

11: What would be the classification for Stop & Shop grocery store?

  • Industrial
  • Place of assembly
  • Large mercantile
  • Instituional

12: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

13: What refrigerant is an inorganic compound?

  • Ammonia
  • R-22
  • R-410A
  • R-132A

14: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • high pressure
  • design pressure
  • critical pressure
  • low pressure

15: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

16: What is the minimum height refrigeration piping should be placed against walls?

  • 72"
  • 6'
  • Ceiling height
  • 7.25'

17: 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

18: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 25
  • 10
  • 20
  • 15

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

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

20: A class B2 refrigerant is considered

  • non-toxic and non-flammable
  • toxic and non-flammable
  • non-toxic and highly flammable
  • toxic and somewhat flammable

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

  • 660 lbs
  • 500 lbs
  • 55 lbs
  • 330 lbs

22: Pressure relief valves shall be marked with the data from

  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code

23: What pipe can not be used for refrigeration?

  • L
  • N
  • M
  • K

24: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 100
  • 90
  • 110
  • 80

25: The discharge relief valve is located (9.4.6)

  • on top of the condensor
  • between the compressor and reciever
  • between the compressor and oil separator
  • between the compressor and the stop valve