ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 6.6
  • 110
  • 330
  • 1,000

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

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

3: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

4: A class A3 refrigerant is considered

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

5: Refrigerants shall be classified by

  • toxicity and flammability
  • maximum permissible quantities of each group
  • requirements for commercial, industrial, and residential occupancies
  • color codes

6: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall have a pressure limiting device installed on the high side of the system
  • shall be inspected by the Boiler of Inspectors bi-annually
  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed

7: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with RX-11
  • Flush with R-718
  • Flush with ammonia
  • Flush with R-11

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

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

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

  • 12"
  • 36"
  • 24"
  • 18"

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

11: Class T machine room

  • has no flame producing apparatus permanently installed
  • shall include closets used for setting equipment
  • shall have refrigerant leak detecting systems installed inside and outside the room
  • shall have remote controls to stop the action of the refrigerant compressor

12: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • licensed technician
  • licensed welder
  • competent welder
  • welder qualified

13: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 90
  • 110
  • 100
  • 80

14: Where a refrigeration or air conditioning system is installed,

  • it shall not be operated below prescribed pressuers
  • A field inspection shall be made before it is put into service
  • the form or certificate shall be authorized by the Department of Public Safety
  • The company who installed the system must notify the fire department in the jurisdiction where installed

15: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • gas masks must be worn
  • no flames shall be permitted
  • explosion precautions must be taken
  • the owner shall be informed

16: How many different groups of refrigerants are there?

  • 7
  • 11
  • 3
  • 15

17: Ammonia is under what safety classification?

  • B2
  • B1
  • A3
  • B3

18: The certificate of inspection

  • 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
  • shall be posted and protected from dirt, water, and other elements
  • shall be authorized by a notarized insurance company

19: A movie theater would be considered a

  • institutional occupancy
  • commercial occupancy
  • public assembly occupancy
  • mixed occupancy

20: B3 refrigerants are considered

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

21: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

22: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • either a fusible plug or a pressure relief device
  • a fusible plug

23: What is the refrigerant chlorodifluoromethane?

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

24: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 7.25'
  • 8'4"
  • 9.00'
  • 7.00'

25: A class B1 refrigerant is considered

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