ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: When a refrigeration or air conditioning system is installed

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

2: What is R-22?

  • CCFCM
  • HFC
  • Chlorodifluoromethane
  • Chlorofluoromethane

3: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

4: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • licensed welder
  • competent welder
  • licensed technician
  • welder qualified

5: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • rupture plug
  • fusion plug
  • fusible plug
  • relief plug

6: When air is ducted through a machine room that services occupied space, What must be done?

  • Flanged and gasketed
  • Welded and seamed.
  • Ducted and sealed
  • Insulated and cross broke

7: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-718
  • Flush with R-11
  • Flush with RX-11
  • Flush with ammonia

8: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

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

  • True
  • False

10: A class B2 refrigerant is considered

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

11: Single compound Refrigerants are classified by what two criteria?

  • Weight and color
  • Temperature range and hazardousness
  • Flammability and toxicity
  • Flammability and temperature range

12: A positive displacement compressor is

  • 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
  • is a reciprocating type compressor with 2 or more pistons

13: 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

14: What type refrigerant is NOT ozone depleting?

  • Halon
  • CFC
  • HCFC
  • HFC

15: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by

  • District Engineering Inspectors
  • Commissioned Inspectors
  • Master licensed Technician
  • both a or b

16: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

17: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

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

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

19: 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 there is a space 6' or more above it
  • When its white
  • When there are sprinklers above

20: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

21: A restaurant is classified as a

  • commercial occupancy
  • public assembly occupancy
  • large mercantile occupancy
  • mixed occupancy

22: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

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: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 100%
  • 80%
  • 75%
  • 90%

25: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Zinc
  • Copper
  • Magnesium
  • Nickel