ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • Stainless Steel
  • Magnesium alloy
  • Aluminum
  • Copper

2: What would be the classification of a church?

  • Industrial
  • Large mercantile
  • Institutional
  • Place of assembly

3: R-11 belongs to Group

  • A-2
  • B-1
  • B-3
  • A-1

4: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

5: Ammonia is under what safety classification?

  • B3
  • A3
  • B2
  • B1

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

  • 50
  • 66
  • 22
  • 25

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

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

8: How many refrigerant classifications are there for toxicity?

  • 5
  • 3
  • 2
  • 1

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

  • 100%
  • 80%
  • 75%
  • 90%

10: What would be the classification of a prison?

  • Large mercantile
  • Industrial
  • Institutional
  • Place of assembly

11: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1
  • 1.5
  • 1.2
  • 2.2

12: Fusible plugs must have what marked on them?

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

13: Which refrigerant class listed below is the most flammable?

  • A2
  • A3
  • B2
  • C3

14: What section governs pressure vessels?

  • Section 1 ASHREA 15 ASME fired
  • Section ASHREA 34
  • OSHA
  • Section 8 ASHREA 15 ASME unfired

15: Ammonia (NH3) is a group III refrigerant

  • True
  • False

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

  • 800F
  • 700F
  • 1000F
  • 600F

17: Machinery rooms must be vented to ______?

  • neutralizing tank
  • unoccupied spaces
  • basement
  • outdoors

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

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

19: What is an egress?

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

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

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

21: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • annually
  • bi-annually
  • regularly
  • quarterly

22: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 7.00'
  • 7.25'
  • 9.00'
  • 8'4"

23: The certificate of inspection

  • shall be posted on the compressor shell or electrical panel at the unit
  • shall be posted and protected from dirt, water, and other elements
  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be authorized by a notarized insurance company

24: R-22 falls under which safety classification?

  • B-1
  • A-1
  • B-2
  • A-2

25: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above