ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: What must be done if refrigeration lines pass through a concrete floor?

  • leak checked
  • insulated
  • installed through a pipe casing
  • moisture barrier

3: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall have a pressure limiting device installed on the high side of the system
  • shall be inspected by the Boiler of Inspectors bi-annually
  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed

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

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

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

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

6: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

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

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

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

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

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

9: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

10: 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

11: How many refrigerant classifications are there for flammability?

  • 2
  • 1
  • 7
  • 3

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

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

13: R-22 falls under which safety classification?

  • B-1
  • A-2
  • A-1
  • B-2

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

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

15: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

16: What is an egress?

  • An entrance or exit
  • An escape route
  • A code violation
  • A valve put on the low side of the system to prevent frosting

17: What section of ASHRAE-15 governs pressure vessels?

  • OSHA
  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired

18: 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

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

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

20: What does safe access mean?

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

21: 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

22: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1
  • 1.2
  • 2.2
  • 1.5

23: What is not a requirement of a Class T machine room?

  • Fire hose connected to the building fire protection system.
  • Tight fitting doors
  • Automatic ventilation
  • Self-closing doors

24: A class A3 refrigerant is considered

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

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

  • Encased
  • Leaked checked
  • Coated
  • Certified