ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many groups of refrigerants are there?

  • 7
  • 5
  • 3
  • 1

2: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

3: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 2
  • 1
  • 5
  • 3

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

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

5: 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

6: What section of ASHRAE-15 governs pressure vessels?

  • Section 9 ASHRAE-15 ASME VIII unfired
  • OSHA
  • Section 7 ASHRAE-15 ASME VIII fired
  • Section 6 ASHRAE-34 ASME VIII unfired

7: 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

8: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class T machinery room
  • Class M machinery room
  • Class B machinery room
  • Class A machinery room

9: The Department that certifies the transportation of refrigerant is the

  • EPA
  • DOT
  • EPO
  • RSES

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

  • Large mercantile
  • Place of assembly
  • Industrial
  • Instituional

11: What does safe access mean?

  • Locked doors
  • Well-lit exit signs
  • A clear unobstructed path to the equipment and controls
  • OSHA approved

12: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

13: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

14: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

15: Pressure vessels with an internal volume of 3 cubic feet or less

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

16: 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

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

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

18: What type of relief valve is used on a CO2 system?

  • glove disc
  • rupture disc
  • gate valve
  • fusible plug

19: Who authorizes changes to the safety codes?

  • Contractor who last serviced the system.
  • Person who pulled the permit
  • Person in charge of the facility
  • Board of Boilers

20: What must be done to refrigerant pipes before being buried?

  • Certified
  • Leaked checked
  • Coated
  • Encased

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

  • 25
  • 50
  • 66
  • 22

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

  • Nickel
  • Copper
  • Magnesium
  • Zinc

23: 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

24: Refrigeration piping before being buried shall be

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

25: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 6.6
  • 110
  • 1,000
  • 330