ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Which refrigerant replaced R-12?

  • R-410A
  • R-22
  • R-407A
  • R-134A

2: A class A3 refrigerant is considered

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

3: 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

4: Can ammonia be used on domestic system?

  • no
  • yes, for systems under 10 tons
  • yes
  • no, unless there is proper ventilation system installed

5: What type of relief valve is used on a CO2 system?

  • glove disc
  • rupture disc
  • gate valve
  • fusible plug

6: Trichlorofluoromethane is the name of what refrigerant?

  • R-12
  • R-113
  • R-11
  • R-502

7: What refrigerant doesn't have to be classifted?

  • R-718
  • R-717
  • R-711
  • R-134a

8: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

9: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • outside the machinery room
  • boiler
  • evaporator
  • compressor

10: A class B1 refrigerant is considered

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

11: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 100
  • 400
  • 250
  • 350

12: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

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

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

14: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusible plug
  • fusion plug
  • rupture plug
  • relief plug

15: Class 3 refrigerants are

  • toxic
  • non-flammable
  • highly flammable
  • non-toxic

16: 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

17: 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 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 100 persons congregate on levels above of below street level to purchase personal merchandise.

18: What is the definition of exit?

  • Anywhere where a stairwell leads to outdoors
  • The separated fire-resistant portion of a means of egress providing a protected travel path between the exit access and the exit discharge
  • Any doorway or pathway unobstructed for access to anywhere considered safe
  • Both a & b

19: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • low pressure
  • high pressure
  • critical pressure
  • design pressure

20: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

21: Where a refrigeration or air conditioning system is installed,

  • it shall not be operated below prescribed pressuers
  • the form or certificate shall be authorized by the Department of Public Safety
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • A field inspection shall be made before it is put into service

22: R-11 belongs to Group

  • B-1
  • A-1
  • A-2
  • B-3

23: Class T machine room

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

24: What is R-290’s ASHRAE safety code?

  • B1
  • A2
  • A3
  • B2

25: When an inspection is needed, how often must it be done?

  • annually
  • every 18 months
  • every 24 months
  • every 36 months