ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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.

2: A relief valve shall be located at least ___ above grade.

  • 15'
  • 10'
  • 25'
  • 36'

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

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

4: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above

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

  • True
  • False

6: The Board of Boilers adopts by reference

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

7: What refrigerant is an inorganic compound?

  • R-22
  • R-410A
  • Ammonia
  • R-132A

8: What would be the classification of a prison?

  • Large mercantile
  • Institutional
  • Place of assembly
  • Industrial

9: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UM” and “UV”
  • “UV”
  • “UL”
  • “U” or “UM”

10: All serviceable components of a refrigeration system shall be provided with

  • service manuals
  • safe access
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • manufactures instructions on start-up procedures

11: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • boiler
  • outside the machinery room
  • compressor
  • evaporator

12: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 90%
  • 100%
  • 80%
  • 75%

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

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

14: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

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

  • 700F
  • 800F
  • 600F
  • 1000F

16: Who approves containers for refrigerants?

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

17: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

  • the same
  • lower
  • higher
  • there is no Group B1 refrigerants

18: A class B2 refrigerant is considered

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

19: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device
  • over pressure protection and a rupture disc

20: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • relief plug
  • rupture plug
  • fusion plug
  • fusible plug

21: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

22: What is a Category "M" fluid?

  • A typical refrigerant used on newer air conditioning and heat pump systems
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content

23: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

24: What pipe can not be used for refrigeration?

  • L
  • N
  • K
  • M

25: 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