ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

2: Pressure relief valves shall be marked with the data from

  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code

3: Ammonia is under what safety classification?

  • B2
  • B1
  • B3
  • A3

4: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

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

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

6: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

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

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

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

  • 18
  • 24
  • 15
  • 10

9: What pipe can not be used for refrigeration?

  • L
  • K
  • M
  • N

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

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

11: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

12: What section of ASHRAE-15 governs pressure vessels?

  • Section 7 ASHRAE-15 ASME VIII fired
  • OSHA
  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 6 ASHRAE-34 ASME VIII unfired

13: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • ammonia
  • HCFC-123
  • Lithium bromide
  • CFC-11

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

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

15: Indirect systems using Group II refrigerants

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

16: What must be done if refrigeration lines pass through a concrete floor?

  • leak checked
  • insulated
  • moisture barrier
  • installed through a pipe casing

17: What must be done to refrigerant pipes before being buried?

  • Certified
  • Leaked checked
  • Encased
  • Coated

18: 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

19: What type of pressure relief device is used on a CO2 system?

  • Gate valve
  • Fusible plug
  • Glove valve
  • Rupture disk

20: What is the refrigerant chlorodifluoromethane?

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

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

  • PVC
  • Magnesium alloy
  • Stainless steel
  • Copper

22: A class B2 refrigerant is considered

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

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

  • B-1
  • A-1
  • B-2
  • A-2

24: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

25: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • Nothing must be done
  • you can never change refrigerants
  • Place sign, check for leaks, and insulate suction line
  • Make sure its compatible, notify owner, and notify AHJ.