ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • A-1
  • B-1
  • A-2
  • B-2

2: R-717 is

  • ammonia
  • trichloromethane
  • carbon dioxide
  • water

3: How many flammability classifications are refrigerants in?

  • 2
  • 5
  • 3
  • 7

4: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

5: Which occupancy can ammonia be used in?

  • commercial
  • industrial
  • depends on the quantity of freon
  • redifential

6: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

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

7: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 90%
  • 80%
  • 100%
  • 75%

8: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

9: The Department that certifies the transportation of refrigerant is the

  • EPA
  • DOT
  • EPO
  • RSES

10: 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

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

  • copper
  • black iron
  • magnesium
  • stainless steel

12: What section governs pressure vessels?

  • OSHA
  • Section ASHREA 34
  • Section 8 ASHREA 15 ASME unfired
  • Section 1 ASHREA 15 ASME fired

13: A class B1 refrigerant is considered

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

14: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by

  • District Engineering Inspectors
  • Commissioned Inspectors
  • Master licensed Technician
  • both a or b

15: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

16: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 2
  • 1
  • 5
  • 3

17: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

18: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 2 months
  • 1 week
  • 14 days
  • 30 days

19: Pipe identification labels are required when the system contains more than

  • 65 lbs
  • 55 lbs
  • 110 lbs
  • 120 lbs

20: Who approves containers for refrigerants?

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

21: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

22: A High-Probability System

  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is a system highly likely to leak form a failed connection or component of such system
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is such that a leak of refrigerant from a failed connection will enter an unoccupied space

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

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

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

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

25: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct