ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

2: Class T machine room

  • has no flame producing apparatus permanently installed
  • shall have remote controls to stop the action of the refrigerant compressor
  • shall have refrigerant leak detecting systems installed inside and outside the room
  • shall include closets used for setting equipment

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

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

4: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • mercantile occupancy
  • business occupancy
  • public assembly occupancy.
  • commercial occupancy

5: When a refrigeration or air conditioning system is installed

  • a field inspection shall be made before it is put into service
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall be approved by the owner for proper operation.
  • it shall not be operated below prescribed pressures

6: How are refrigerant blends classified?

  • Blends don't have to be classified
  • Based on worst case fractionation
  • Based on best case Fractionation
  • Based on the oil used

7: A hotel is considered a _______ occupancy.

  • commercial
  • mercantile
  • residential
  • institutional

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

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

9: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-113
  • R-11
  • R-12

10: What refrigerant is an inorganic compound?

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

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

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

12: Pressure vessels with an internal volume of 3 cubic feet or more

  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices
  • do not need pressure relief protection
  • shall use fusible plugs

13: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 100
  • 50
  • 350
  • 550

14: A relief valve discharge capacity is rated in

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

15: All serviceable components of a refrigeration system shall be provided with

  • service manuals
  • safe access
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • manufactures instructions on start-up procedures

16: A positive displacement compressor is

  • is a reciprocating type compressor with 2 or more pistons
  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
  • 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 volume of the compression chamber

17: The color code of a tank of ammonia is

  • white
  • silver
  • lavender
  • light green

18: R-22 is considered a(n)

  • CFC
  • HCFCH
  • HCFC
  • HFC

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

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

20: What type refrigerant is NOT ozone depleting?

  • CFC
  • HCFC
  • Halon
  • HFC

21: R-410A is classified as a ____ refrigerant on the safety matrix.

  • A-1
  • B-1
  • A-2
  • B-2

22: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 75
  • 15
  • 55
  • 50

23: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

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

  • regularly
  • bi-annually
  • quarterly
  • annually

25: How many different groups of refrigerants are there?

  • 15
  • 11
  • 3
  • 7