ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

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

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

3: Dual-pressure relief devices should be installed on

  • vessels of 10 cubic feet or less
  • vessels of 3 cubic feet or more
  • vessels of 3 cubic feet or less
  • vessels of 10 cubic feet or more

4: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UM or UL
  • UL and UR
  • UV or UR
  • UL and UM

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

  • C3
  • B2
  • A3
  • A2

6: How many refrigerant classifications are there for flammability?

  • 1
  • 7
  • 3
  • 2

7: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class A machinery room
  • Class B machinery room
  • Class T machinery room
  • Class M machinery room

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: Refrigerants shall be classified by

  • requirements for commercial, industrial, and residential occupancies
  • toxicity and flammability
  • color codes
  • maximum permissible quantities of each group

10: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 33
  • 50
  • 18
  • 22

11: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

12: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

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

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

14: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-11
  • Flush with ammonia
  • Flush with R-718
  • Flush with RX-11

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

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

16: Evaporators within 18" of a heating coil must be equipped with a

  • low limit control
  • pressure relief device
  • zone valve
  • high limit control

17: 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

18: What happens after your initial inspection of a pressure vessel?

  • Notify the AHJ to let them know that the system been inspected
  • Notify the Fire Marshal that the system has been inspected and approved
  • There is a temporary shut-down until a final inspection can be performed.
  • Inspector leaves a metal tag with a certification listed on it

19: Halogenated refrigerants cannot be used with what material?

  • Magnesium alloy
  • Stainless steel
  • Aluminum
  • Copper

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

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

21: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

22: 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.

  • 400
  • 350
  • 100
  • 250

23: 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

24: Where must a refrigeration contractor's license number be displayed?

  • Uniforms, checks, and invoices.
  • Trucks, license plates, and uniforms
  • Truck, office, every job, and on all equipment
  • Trucks, invoices, and advertising

25: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 350
  • 550
  • 100
  • 50