ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: 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

3: Class A refrigerants are considered

  • toxic
  • flammable
  • non-flammable
  • non-toxic

4: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use fusible plugs
  • shall use rupture discs or duel pressure relief valves
  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices

5: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 24
  • 18
  • 15
  • 10

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

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

7: Who approves containers for refrigerants?

  • E.P.A
  • D.O.T
  • D.O.E
  • D.O.D

8: 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

9: Direct systems using Group II refrigerants

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

10: An example of direct system is

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

11: Dual-pressure relief devices should be installed on

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

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

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

13: How many different groups of refrigerants are there?

  • 7
  • 3
  • 15
  • 11

14: Machinery rooms must be vented to ______?

  • outdoors
  • neutralizing tank
  • unoccupied spaces
  • basement

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

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

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

  • Inspector leaves a metal tag with a certification listed on it
  • Notify the AHJ to let them know that the system been inspected
  • 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.

17: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When its white
  • When it's used as part of a supply or return air system
  • When there is a space 6' or more above it
  • When there are sprinklers above

18: Which refrigerant class listed below is the most flammable?

  • B2
  • A2
  • C3
  • A3

19: Stop valves shall not be permitted between the system and the

  • bleed valve
  • service valve
  • condenser
  • relief valve

20: A class B2 refrigerant is considered

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

21: 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

22: Refrigeration piping before being buried shall be

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

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

  • A-2
  • A-1
  • B-2
  • B-1

24: How many groups of refrigerants are there?

  • 5
  • 7
  • 3
  • 1

25: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above