ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

2: A class A3 refrigerant is considered

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

3: Who authorizes changes to the safety codes?

  • Person who pulled the permit
  • Contractor who last serviced the system.
  • Board of Boilers
  • Person in charge of the facility

4: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 330 lbs.
  • 660 lbs
  • 55 lbs
  • 550 lbs

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

  • Stainless steel
  • Magnesium alloy
  • PVC
  • Copper

6: What would be the classification of a church?

  • Industrial
  • Large mercantile
  • Place of assembly
  • Institutional

7: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-12
  • R-113
  • R-22
  • R-11

8: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

9: 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

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

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

11: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 10
  • 25
  • 20
  • 15

12: What is the minimum height refrigeration piping should be placed against walls?

  • 6'
  • 7.25'
  • Ceiling height
  • 72"

13: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use pressure relief devices
  • shall use pressure relief devices or fusible plugs
  • shall use rupture discs or duel pressure relief valves
  • shall use fusible plugs

14: 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

15: How many groups of refrigerants are there?

  • 5
  • 7
  • 3
  • 1

16: What refrigerant were phased out in 2004?

  • R-22
  • R-12
  • R-134a
  • R-11

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

  • A-3
  • A-1
  • B-2
  • C-3

18: Each machinery room shall contain

  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • high and low pressure controls
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

19: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

20: When a refrigeration or air conditioning system is installed

  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall be approved by the owner for proper operation.
  • a field inspection shall be made before it is put into service
  • it shall not be operated below prescribed pressures

21: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Classifed
  • Leak checked
  • Certified
  • Insulated and installed in a pipe duct (Encased)

22: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • welder qualified
  • licensed technician
  • competent welder
  • licensed welder

23: 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

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

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

25: A declaration test is needed when the system contains more than

  • 55 lbs
  • 65 lbs
  • 110 lbs
  • 120 lbs