ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Refrigerant restricted in 2004 but used for transition for decades:

  • R-123
  • R-22
  • R-134A
  • R-11

2: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 1000F
  • 600F
  • 700F
  • 800F

3: Which refrigerant replaced R-12?

  • R-407A
  • R-22
  • R-410A
  • R-134A

4: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the low side
  • the high side
  • 2.5 times the design pressure
  • the aggregate of the high side and low side

5: What is an egress?

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

6: Fusible plugs must have what marked on them?

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

7: Can ammonia be used on domestic system?

  • no, unless there is proper ventilation system installed
  • no
  • yes, for systems under 10 tons
  • yes

8: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

9: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 1
  • 5

10: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 2 months
  • 30 days
  • 1 week
  • 14 days

11: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • make sure it's compatible, notify owner, notify A.H.J
  • place sign, check for leaks, insulate
  • you can't change refrigerants
  • nothing must be done

12: How many groups of refrigerants are there?

  • 1
  • 3
  • 7
  • 5

13: Name three things that must be done when changing refrigeration lubricant?

  • Make sure it's compatible, notify owner, notify AHJ
  • You can't change lubricants.
  • Nothing must be done
  • Place sign, check for leaks, insulate

14: 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

15: B3 refrigerants are considered

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

16: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UL and UR
  • UL and UM
  • UV or UR
  • UM or UL

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

  • Large mercantile
  • Place of assembly
  • Industrial
  • Instituional

18: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system less than 1,000 lbs
  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used for mechanical equipment only
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room

19: R-22 is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-1
  • B-2
  • A-2

20: When must refrigeration system covered by the code be inspected?

  • Not required
  • Annually
  • Annually and when installed
  • Upon installation

21: 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

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

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

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

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

24: Name an HCFC refrigerant(s):

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

25: A class B1 refrigerant is considered

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