ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Liquid level gauges must be provided with what?

  • A low level mark
  • A relief valve
  • Automatic shut-offs
  • A red line

2: 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

3: What is R-22?

  • HFC
  • Chlorofluoromethane
  • CCFCM
  • Chlorodifluoromethane

4: What is R-611’s ASHRAE Safety Code?

  • B2
  • B3
  • C3
  • A2

5: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • Because it's water
  • Because it's cheap
  • Because it's a non-flammable refrigerant
  • R-718 is not rated unlimited because it's a dangerous refrigerant

6: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

7: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above

8: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • 2.5 times the design pressure
  • the high side
  • the low side
  • the aggregate of the high side and low side

9: No open flames are allowed in the machinery room unless?

  • Approved by the authorized person
  • Approved by the installing contractor
  • Never can be allowed
  • Only when combustion air is provided from outside of the machinery room

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

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

11: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 80%
  • 90%
  • 75%
  • 100%

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: Who is permitted to access a refrigeration machine room?

  • Any employee
  • Anyone, it's a completely safe area
  • Authorized persons only
  • Contractors only

14: What type refrigerant is NOT ozone depleting?

  • Halon
  • HCFC
  • CFC
  • HFC

15: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 55
  • 50
  • 15
  • 75

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

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

17: How many refrigerant classifications are there for toxicity?

  • 3
  • 5
  • 1
  • 2

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

  • 50
  • 75
  • 15
  • 20

19: Dual-pressure relief devices should be installed on

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

20: Machinery rooms must be vented to ______?

  • neutralizing tank
  • basement
  • unoccupied spaces
  • outdoors

21: What would be the classification of a prison?

  • Institutional
  • Place of assembly
  • Industrial
  • Large mercantile

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

  • 600F
  • 1000F
  • 800F
  • 700F

23: How many CFMs are required per square foot of commercial office occupied space

  • .5 CFM
  • 5 CFM
  • 20 CFM
  • 15 CFM

24: Joints in refrigeration piping must be _____ before being covered?

  • Pressurized
  • Leak tested
  • Insulated
  • Inspected

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

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