ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

3: The certificate of inspection

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

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

  • Pressurized
  • Leak tested
  • Insulated
  • Inspected

5: What refrigerant were phased out in 2004?

  • R-134a
  • R-22
  • R-12
  • R-11

6: What type of copper is not permitted on refrigeration systems?

  • Type N
  • Type K
  • Type M
  • Type L

7: What type refrigerant is NOT ozone depleting?

  • CFC
  • HFC
  • HCFC
  • Halon

8: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

9: A movie theater would be considered a

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

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

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

11: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

12: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 25
  • 15
  • 10
  • III

13: High pressure controls should be set no higher than

  • 10% of set point
  • 25% of set point
  • 80% of set point
  • 90% of set point

14: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

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

15: How many flammability classifications are refrigerants in?

  • 2
  • 5
  • 3
  • 7

16: A class A3 refrigerant is considered

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

17: What is a Category "D" fluid?

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

18: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 18
  • 33
  • 50
  • 22

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.

  • 550
  • 350
  • 50
  • 100

20: 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

21: What pipe can not be used for refrigeration?

  • N
  • L
  • M
  • K

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

  • 24"
  • 12"
  • 18"
  • 36"

23: Ammonia belongs to Group

  • A-1
  • A-2
  • B-1
  • B-2

24: The color code of a tank of ammonia is

  • silver
  • white
  • light green
  • lavender

25: What is the refrigerant chlorodifluoromethane?

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