ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A pressure relief should be located at least _______ from windows and doors.

  • 15'
  • 25'
  • 20'
  • 30'

2: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 8'4"
  • 7.25'
  • 7.00'
  • 9.00'

3: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c

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

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

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

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

6: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • annually
  • quarterly
  • bi-annually
  • regularly

7: 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.

8: Pressure vessels with an internal volume of 3 cubic feet or more

  • shall use pressure relief devices or fusible plugs
  • shall use fusible plugs
  • do not need pressure relief protection
  • shall use pressure relief devices

9: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

10: 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

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

  • 50
  • 15
  • 75
  • 20

12: Class T machine room

  • shall have remote controls to stop the action of the refrigerant compressor
  • 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

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

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

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

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

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

  • True
  • False

16: Single compound Refrigerants are classified by what two criteria?

  • Temperature range and hazardousness
  • Flammability and toxicity
  • Weight and color
  • Flammability and temperature range

17: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 600F
  • 800F
  • 1000F
  • 700F

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

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

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: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • nothing must be done
  • you can't change refrigerants
  • make sure it's compatible, notify owner, notify A.H.J
  • place sign, check for leaks, insulate

21: Most CFC's are

  • toxic
  • flammable
  • inert
  • inert but toxic

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

  • 15
  • 5
  • 20
  • 1

23: Class A refrigerants are considered

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

24: Halo-carbon refrigerants cannot be used with what material?

  • Stainless Steel
  • Aluminum
  • Copper
  • Magnesium alloy

25: What does safe access mean?

  • Well-lit exit signs
  • A clear unobstructed path to the equipment and controls
  • Locked doors
  • OSHA approved