ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • relief valve
  • service valve
  • condenser
  • bleed valve

2: Liquid level gauges must be provided with what?

  • A low level mark
  • A relief valve
  • Automatic shut-offs
  • A red line

3: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

4: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

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

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

6: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 80%
  • 90%
  • 100%
  • 75%

7: A declaration test is needed when the system contains more than

  • 55 lbs
  • 65 lbs
  • 120 lbs
  • 110 lbs

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

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

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

  • Magnesium alloy
  • Stainless Steel
  • Copper
  • Aluminum

10: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

11: When should a relief valve start to function?

  • Before the purge station discharges
  • 10 psi before it's set pressure
  • At it's set pressure
  • Two times it's working pressure

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

  • B2
  • A3
  • A2
  • C3

13: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c

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

  • 22
  • 18
  • 50
  • 33

15: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

16: When must refrigeration system covered by the code be inspected?

  • Annually
  • Upon installation
  • Not required
  • Annually and when installed

17: 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

18: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 100,000
  • 10,000
  • 1,000
  • 100

19: 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

20: How many refrigerant classifications are there for flammability?

  • 1
  • 3
  • 2
  • 7

21: Ammonia belongs to Group

  • A-1
  • A-2
  • B-1
  • B-2

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

  • DOT
  • EPA
  • EPO
  • RSES

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

  • True
  • False

24: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 1000F
  • 800F
  • 600F
  • 700F

25: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above