ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

2: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

3: 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

4: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • load-side of the contactor in
  • 24 volt secondary side of the Class 2 transformer to the thermostat
  • first disconnect in
  • breaker panel in

5: A class B2 refrigerant is considered

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

6: What type of pressure relief device is used on a CO2 system?

  • Gate valve
  • Fusible plug
  • Rupture disk
  • Glove valve

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

  • A-1
  • B-2
  • A-2
  • B-1

8: 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

9: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection and a rupture disc
  • over pressure protection as well as a temperature protection device

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

  • 36'
  • 25'
  • 15'
  • 10'

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

  • EPA
  • RSES
  • DOT
  • EPO

12: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

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

  • Coated
  • Certified
  • Encased
  • Leaked checked

14: What is the refrigerant chlorodifluoromethane?

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

15: What do you need to do when you install a new system?

  • Have it inspected
  • Add refrigerant
  • Insulate the suction line before you take a superheat reading
  • Document the superheat and subcooling reading

16: Class 3 refrigerants are

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

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

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

18: Pressure relief valves shall be marked with the data from

  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code

19: A professional or office building would be considered what type of occupancy?

  • mercantile
  • business
  • public assembly
  • commercial

20: Name three things that must be done when changing refrigeration lubricant?

  • Nothing must be done
  • Make sure it's compatible, notify owner, notify AHJ
  • Place sign, check for leaks, insulate
  • You can't change lubricants.

21: Which refrigerant class listed below is the most flammable?

  • C3
  • B2
  • A3
  • A2

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

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

23: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?

  • Temperature limiter device
  • Relief valve
  • T&P device
  • Circuit Breaker

24: Can ammonia be used on domestic system?

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

25: Fusible plugs shall not be used with pressure vessels of

  • 3 cubic feet or more
  • 3 cubic feet or less
  • 15 cubic feet or more
  • 15 square feet or less