ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A positive displacement compressor is

  • is a reciprocating type compressor with 2 or more pistons
  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber

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

  • Instituional
  • Place of assembly
  • Industrial
  • Large mercantile

3: What must be done if refrigeration lines pass through a concrete floor?

  • installed through a pipe casing
  • leak checked
  • moisture barrier
  • insulated

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

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

5: What is the refrigerant dichlorodifluoromethane?

  • R-22
  • R-134A
  • R-123
  • R-12

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

  • bi-annually
  • regularly
  • quarterly
  • annually

7: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

8: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use pressure relief devices
  • shall use rupture discs or duel pressure relief valves
  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs

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

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

10: R-123 belongs to Group

  • B-1
  • B-2
  • A-3
  • B-3

11: Machinery rooms must be vented to ______?

  • neutralizing tank
  • outdoors
  • unoccupied spaces
  • basement

12: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used in refrigeration system less than 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

13: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 10
  • 25
  • III
  • 15

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

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

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

  • 330
  • 100
  • 150
  • 200

16: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 5.5
  • 2.0
  • 2.5
  • 3.0

17: What is R-22?

  • Chlorofluoromethane
  • HFC
  • Chlorodifluoromethane
  • CCFCM

18: Who approves containers for refrigerants?

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

19: A relief valve discharge capacity is rated in

  • PSIG
  • temperature minus pounds of air per second divided by release rate squared
  • PSIA
  • Pounds of air per minute.

20: Can ammonia be used on domestic system?

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

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

  • 800F
  • 700F
  • 1000F
  • 600F

22: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 5
  • 1

23: R-22 falls under which safety classification?

  • B-2
  • A-2
  • B-1
  • A-1

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

  • 66
  • 22
  • 25
  • 50

25: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • public assembly occupancy
  • institutional occupancy
  • illegal occupancy
  • commercial occupancy