ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 3.0, 3.5
  • 2.5, 3.0
  • 6.6, 6.6
  • 2.5, 2.5

2: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

3: B3 refrigerants are considered

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

4: What would be the classification of a prison?

  • Industrial
  • Institutional
  • Large mercantile
  • Place of assembly

5: 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

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: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • the mechanical room housing the refrigeration system
  • Machinery rooms need not be vented
  • the return air ducted system
  • the outdoors

8: What is Trichlorotrifluoromethane?

  • R-13
  • R-12
  • R-113
  • R-11

9: A class B2 refrigerant is considered

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

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

  • Large mercantile
  • Place of assembly
  • Industrial
  • Instituional

11: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 25
  • 50
  • 66
  • 22

12: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

13: 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.

  • 15
  • 20
  • 25
  • 10

14: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When it's used as part of a supply or return air system
  • When its white
  • When there are sprinklers above
  • When there is a space 6' or more above it

15: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 15
  • 20
  • 50
  • 75

16: What does safe access mean?

  • Locked doors
  • Well-lit exit signs
  • A clear unobstructed path to the equipment and controls
  • OSHA approved

17: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • gas masks must be worn
  • explosion precautions must be taken
  • no flames shall be permitted
  • the owner shall be informed

18: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

  • higher
  • the same
  • there is no Group B1 refrigerants
  • lower

19: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 90%
  • 80%
  • 100%
  • 75%

20: What type of copper is not permitted on refrigeration systems?

  • Type M
  • Type L
  • Type N
  • Type K

21: What is not a requirement of a Class T machine room?

  • Tight fitting doors
  • Self-closing doors
  • Fire hose connected to the building fire protection system.
  • Automatic ventilation

22: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • either a fusible plug or a pressure relief device
  • a fusible plug
  • a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified

23: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 6.6
  • 110
  • 1,000
  • 330

24: A declaration test is needed when the system contains more than

  • 110 lbs
  • 65 lbs
  • 120 lbs
  • 55 lbs

25: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 48
  • 18
  • 24
  • 36