ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Pressure vessels with an internal volume of 3 cubic feet or more

  • do not need pressure relief protection
  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices

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

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

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

  • you can't change refrigerants
  • make sure it's compatible, notify owner, notify A.H.J
  • nothing must be done
  • place sign, check for leaks, insulate

4: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 330 lbs
  • 500 lbs
  • 55 lbs
  • 660 lbs

5: The Board of Boilers adopts by reference

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

6: What type of relief valve is used on a CO2 system?

  • rupture disc
  • fusible plug
  • gate valve
  • glove disc

7: How many groups of refrigerants are there?

  • 3
  • 7
  • 5
  • 1

8: A relief valve discharge capacity is rated in

  • PSIA
  • PSIG
  • temperature minus pounds of air per second divided by release rate squared
  • Pounds of air per minute.

9: Joints in refrigeration piping must be _____ before being covered?

  • Leak tested
  • Pressurized
  • Insulated
  • Inspected

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

  • 110
  • 330
  • 6.6
  • 1,000

11: What pipe can not be used for refrigeration?

  • M
  • K
  • L
  • N

12: What does safe access mean?

  • Well-lit exit signs
  • OSHA approved
  • A clear unobstructed path to the equipment and controls
  • Locked doors

13: Ammonia is under what safety classification?

  • B3
  • A3
  • B2
  • B1

14: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1.2
  • 1.5
  • 2.2
  • 1

15: A class B1 refrigerant is considered

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

16: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

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

  • 700F
  • 1000F
  • 800F
  • 600F

18: 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

19: What would be the classification of a church?

  • Institutional
  • Industrial
  • Place of assembly
  • Large mercantile

20: How many different groups of refrigerants are there?

  • 7
  • 11
  • 3
  • 15

21: The certificate of inspection

  • 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 $20 and an additional fee of $1 for each tone above 20 tons
  • shall be authorized by a notarized insurance company

22: When a refrigeration or air conditioning system is installed

  • a field inspection shall be made before it is put into service
  • it shall not be operated below prescribed pressures
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall be approved by the owner for proper operation.

23: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

24: Halogen refrigerants are corrosive to which type of metal?

  • copper
  • magnesium
  • black iron
  • stainless steel

25: A pressure relief should be located at least _______ from windows and doors.

  • 20'
  • 30'
  • 25'
  • 15'