ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: R-410A is classified as a ____ refrigerant on the safety matrix.

  • B-2
  • A-2
  • A-1
  • B-1

2: Refrigerants shall be classified by

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

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

  • 33
  • 50
  • 18
  • 22

4: 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

5: Who authorizes changes to the safety codes?

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

6: What is an egress?

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

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

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

8: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

9: A High-Probablity system

  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak from a failed connection or component of such system
  • is such that a leak of refrigerant from failed connections will enter the occupied space
  • is such that a leak of refrigerant from failed connections will enter the unoccupied space

10: Dual-pressure relief devices should be installed on

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

11: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 14 days
  • 30 days
  • 1 week
  • 2 months

12: Most CFC's are

  • toxic
  • inert but toxic
  • flammable
  • inert

13: A class B2 refrigerant is considered

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

14: R-22 is considered a(n)

  • HFC
  • CFC
  • HCFC
  • HCFCH

15: 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

16: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

17: Where a refrigeration or air conditioning system is installed,

  • the form or certificate shall be authorized by the Department of Public Safety
  • it shall not be operated below prescribed pressuers
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • A field inspection shall be made before it is put into service

18: Trichlorofluoromethane is the name of what refrigerant?

  • R-12
  • R-113
  • R-11
  • R-502

19: 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

20: Halogen refrigerants are corrosive to which type of metal?

  • copper
  • black iron
  • stainless steel
  • magnesium

21: _____ and its alloys are suitable for use with ammonia systems.

  • Copper
  • Magnesium
  • Zinc
  • Aluminum

22: Relief valves are rated in

  • pounds of air per minute
  • gallons of water per hour
  • gallons of water per minute
  • pounds of air per hour

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

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

24: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 3.0, 3.5
  • 2.5, 3.0
  • 6.6, 6.6
  • 2.5, 2.5

25: Ammonia belongs to Group

  • A-1
  • B-2
  • B-1
  • A-2