ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A class B2 refrigerant is considered

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

2: R-717 is

  • carbon dioxide
  • water
  • ammonia
  • trichloromethane

3: When should a relief valve start to function?

  • Two times it's working pressure
  • Before the purge station discharges
  • At it's set pressure
  • 10 psi before it's set pressure

4: What section governs pressure vessels?

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

5: 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 30'
  • At least 20'
  • At least 40'

6: How many gallons of water per pound of ammonia do you need?

  • 5
  • 15
  • 1
  • 20

7: How far from the ground does a relief valve need to be?

  • Not more than 3' above grade
  • At least 20' above grade
  • At least 15' above grade
  • At least 25' above grade

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

  • 18
  • 22
  • 33
  • 50

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

  • 30'
  • 20'
  • 15'
  • 25'

10: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

11: What would be the classification of a church?

  • Industrial
  • Large mercantile
  • Place of assembly
  • Institutional

12: How many different groups of refrigerants are there?

  • 3
  • 7
  • 11
  • 15

13: Refrigeration piping before being buried shall be

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

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

  • 2
  • 5
  • 1
  • 3

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

  • Certified
  • Leaked checked
  • Encased
  • Coated

16: How much refrigerant can be stored in a mechanical room outside of the system?

  • 150
  • 100
  • 330
  • 200

17: R-22 is classified as a ____ refrigerant on the safety matrix.

  • B-2
  • A-1
  • B-1
  • A-2

18: What is R-22?

  • Chlorofluoromethane
  • HFC
  • CCFCM
  • Chlorodifluoromethane

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

  • True
  • False

20: 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

21: What does safe access mean?

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

22: Machinery rooms must be vented to ______?

  • outdoors
  • neutralizing tank
  • basement
  • unoccupied spaces

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

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

24: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

25: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 7.25'
  • 8'4"
  • 9.00'
  • 7.00'