ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • Stainless steel
  • PVC
  • Copper
  • Magnesium alloy

2: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 2.5, 2.5
  • 6.6, 6.6
  • 2.5, 3.0
  • 3.0, 3.5

3: Ammonia can come in contact with _______ ?

  • Copper tubing
  • Aluminum
  • Brass
  • Copper

4: How many refrigerant classifications are there for toxicity?

  • 5
  • 1
  • 2
  • 3

5: How much clearance do you need around the perimeter of electrical panels?

  • 36"
  • 24"
  • 18"
  • 12"

6: Where must a refrigeration contractor's license number be displayed?

  • Trucks, invoices, and advertising
  • Truck, office, every job, and on all equipment
  • Trucks, license plates, and uniforms
  • Uniforms, checks, and invoices.

7: 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
  • 50
  • 55

8: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

9: 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

10: The Board of Boilers adopts by reference

  • the 1997 ANSI/ASHRAE Safety Code
  • MSCA Code
  • Montreal Protocol Safety Code
  • the MACS Pressure Vessel Code of Massachusetts

11: R-11 belongs to Group

  • A-2
  • B-1
  • B-3
  • A-1

12: What type refrigerant is NOT ozone depleting?

  • HFC
  • CFC
  • HCFC
  • Halon

13: A professional or office building would be considered what type of occupancy?

  • commercial
  • public assembly
  • mercantile
  • business

14: 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

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

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

16: The certificate of inspection

  • shall be authorized by a notarized insurance company
  • shall be posted and protected from dirt, water, and other elements
  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be posted on the compressor shell or electrical panel at the unit

17: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

18: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 6.6 lbs
  • 44 lbs
  • 13.9 lbs
  • 22 lbs

19: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 100
  • 350
  • 50
  • 550

20: Machinery rooms must be vented to ______?

  • neutralizing tank
  • unoccupied spaces
  • basement
  • outdoors

21: Fusible plugs shall not be used with pressure vessels of

  • 15 cubic feet or more
  • 3 cubic feet or more
  • 15 square feet or less
  • 3 cubic feet or less

22: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that a leak of refrigerant from failed connections will enter the occupied 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

23: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used in refrigeration system less than 1,000 lbs
  • shall be used for mechanical equipment only
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room

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

  • 110
  • 330
  • 6.6
  • 1,000

25: A positive displacement compressor is

  • is a reciprocating type compressor with 2 or more pistons
  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber