ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

2: How many flammability classifications are refrigerants in?

  • 2
  • 5
  • 7
  • 3

3: 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

4: Which refrigerant(s) is an HFC?

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

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

  • True
  • False

6: Where are the three places that the discharge from an ammonia relief valve be piped?

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

7: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 15
  • 50
  • 75
  • 20

8: 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

9: Indirect systems using Group II refrigerants

  • shall be used for mechanical equipment only
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room
  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used in refrigeration system less than 1,000 lbs

10: How many refrigerant classifications are there for toxicity?

  • 1
  • 3
  • 5
  • 2

11: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 18
  • 48
  • 24
  • 36

12: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 18
  • 24
  • 10
  • 15

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

  • 10'
  • 36'
  • 15'
  • 25'

14: What is a Category "M" fluid?

  • 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
  • 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

15: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise

16: Who approves containers for refrigerants?

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

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

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

18: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

19: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • the liquid side of the system
  • low side of the system
  • the vapor side of the system
  • high side of the system

20: What would be the classification of a church?

  • Place of assembly
  • Institutional
  • Industrial
  • Large mercantile

21: How many CFMs are required per square foot of commercial office occupied space

  • 5 CFM
  • 20 CFM
  • .5 CFM
  • 15 CFM

22: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall have a pressure limiting device installed on the high side of the system
  • shall be inspected by the Boiler of Inspectors bi-annually
  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed

23: What would be the classification of a prison?

  • Institutional
  • Industrial
  • Large mercantile
  • Place of assembly

24: When should a relief valve start to function?

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

25: 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