ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: _____ and its alloys are suitable for use with ammonia systems.

  • Magnesium
  • Copper
  • Aluminum
  • Zinc

2: Large mercantile occupancy is

  • 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
  • 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 1500 persons congregate on levels above or below street level to purchase personal merchandise

3: 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

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

  • 50
  • 10
  • 1
  • 100

5: What refrigerant doesn't have to be classified?

  • R-134A
  • R-422A
  • R-718
  • R-717

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

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

7: What type of material can't be used on the outlet of a relief valve?

  • Stainless steel
  • Magnesium alloy
  • PVC
  • Copper

8: A movie theater would be considered a

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

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

  • 10
  • 18
  • 15
  • 24

10: Class T machine room

  • shall have refrigerant leak detecting systems installed inside and outside the room
  • has no flame producing apparatus permanently installed
  • shall have remote controls to stop the action of the refrigerant compressor
  • shall include closets used for setting equipment

11: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Nickel
  • Copper
  • Zinc
  • Magnesium

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

  • B-1
  • B-2
  • A-1
  • A-2

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

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

14: What is the refrigerant chlorodifluoromethane?

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

15: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • Machinery rooms need not be vented
  • the outdoors
  • the return air ducted system
  • the mechanical room housing the refrigeration system

16: 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

17: How many different groups of refrigerants are there?

  • 7
  • 3
  • 11
  • 15

18: The gauge thickness required on a CO2 tank construction is

  • 3/32"
  • 5/16"
  • 1/16"
  • 1/8"

19: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • public assembly occupancy
  • illegal occupancy
  • commercial occupancy
  • institutional occupancy

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

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

21: A hotel is considered a _______ occupancy.

  • residential
  • mercantile
  • commercial
  • institutional

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

  • Encased
  • Leaked checked
  • Coated
  • Certified

23: The Board of Boilers adopts by reference

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

24: R-22 falls under which safety classification?

  • A-1
  • A-2
  • B-1
  • B-2

25: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above