ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: When a refrigeration or air conditioning system is installed

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

2: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

3: 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

4: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the aggregate of the high side and low side
  • the low side
  • the high side
  • 2.5 times the design pressure

5: Dual-pressure relief devices should be installed on

  • vessels of 10 cubic feet or more
  • vessels of 10 cubic feet or less
  • vessels of 3 cubic feet or less
  • vessels of 3 cubic feet or more

6: What is an example of institutional occupancy?

  • Shopping mall
  • Dorms
  • Football stadium
  • Hospital

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

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

8: The discharge relief valve is located (9.4.6)

  • between the compressor and reciever
  • between the compressor and the stop valve
  • on top of the condensor
  • between the compressor and oil separator

9: Who authorizes changes to the safety codes?

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

10: What refrigerant doesn't have to be classifted?

  • R-717
  • R-134a
  • R-718
  • R-711

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

  • Stainless Steel
  • Magnesium alloy
  • Aluminum
  • Copper

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

  • 3
  • 5
  • 2
  • 1

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

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

14: What is the refrigerant chlorodifluoromethane?

  • R-12
  • R-22
  • R-134a
  • R-123

15: 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

16: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 24
  • 48
  • 18
  • 36

17: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UM or UL
  • UL and UR
  • UV or UR
  • UL and UM

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

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

19: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the occupied space
  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak from a failed connection or component of such system

20: What refrigerant were phased out in 2004?

  • R-11
  • R-22
  • R-12
  • R-134a

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

  • 33
  • 22
  • 18
  • 50

22: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

23: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

24: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

25: What happens after your initial inspection of a pressure vessel?

  • Notify the Fire Marshal that the system has been inspected and approved
  • There is a temporary shut-down until a final inspection can be performed.
  • Inspector leaves a metal tag with a certification listed on it
  • Notify the AHJ to let them know that the system been inspected