ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What type of copper is not permitted on refrigeration systems?

  • Type N
  • Type L
  • Type M
  • Type K

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

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

3: How far from the window does a relief valve need to be according to ASHRAE-15?

  • At least 40'
  • At least 20'
  • There is no minimum for relief valve and windows.
  • At least 30'

4: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • compressor
  • evaporator
  • boiler
  • outside the machinery room

5: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

6: 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

7: What refrigerant is an inorganic compound?

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

8: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

9: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 500 lbs
  • 330 lbs
  • 660 lbs
  • 55 lbs

10: A class A3 refrigerant is considered

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

11: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

12: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

13: Who authorizes changes to the safety codes?

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

14: B3 refrigerants are considered

  • non-toxic but non-flammable
  • toxic and highly flammable
  • toxic but non-flammable
  • non-toxic but flammable

15: Direct systems using Group II refrigerants

  • shall be allowed to be used for human comfort.
  • shall be installed per instruction of the AHJ
  • shall be installed in Class T machinery rooms
  • shall not be used for air condition for human comfort

16: How many refrigerant classifications are there for toxicity?

  • 1
  • 5
  • 2
  • 3

17: What kind of material can't be used on the outlet of a relief valve?

  • Stainless Steel
  • Aluminum
  • PVC
  • Copper

18: NH3 is

  • R-508A
  • R-718
  • ammonia
  • lithium bromide

19: Dual-pressure relief devices should be installed on

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

20: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 350
  • 400
  • 250
  • 100

21: 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

22: High pressure controls should be set no higher than

  • 90% of set point
  • 10% of set point
  • 80% of set point
  • 25% of set point

23: When a refrigerating machinery room is used, the emergency procedures shall be posted

  • on a conspicuous card located near the evaporator
  • outside the room, immediately adjacent to each door
  • on a conspicuous card located near the compressor
  • inside the room, immediately adjacent to each door

24: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device
  • over pressure protection
  • over pressure protection and a rupture disc

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

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