ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 800F
  • 1000F
  • 700F
  • 600F

2: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

3: Who authorizes changes to the safety codes?

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

4: What refrigerant doesn't have to be classified?

  • R-134A
  • R-718
  • R-717
  • R-422A

5: 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

6: What is an example of institutional occupancy?

  • Shopping mall
  • Dorms
  • Football stadium
  • Hospital

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

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

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

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

9: A High-Probablity system

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

10: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

11: Ammonia (NH3) is a group III refrigerant

  • True
  • False

12: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • high side of the system
  • the liquid side of the system
  • the vapor side of the system
  • low side of the system

13: What is an egress?

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

14: 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"
  • 7.00'
  • 7.25'
  • 9.00'

15: What refrigerant were phased out in 2004?

  • R-22
  • R-11
  • R-12
  • R-134a

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

  • A-1
  • A-3
  • B-2
  • C-3

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

  • 2.2
  • 1
  • 1.5
  • 1.2

18: Pressure vessels with an internal volume of 3 cubic feet or less

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

19: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 80%
  • 90%
  • 75%
  • 99%

20: What would be the classification of a church?

  • Industrial
  • Place of assembly
  • Large mercantile
  • Institutional

21: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

22: What is the refrigerant chlorodifluoromethane?

  • R-134a
  • R-22
  • R-12
  • R-123

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

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

24: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

25: What is a Category "D" fluid?

  • Any fluid that exceeds 150 psig and has design temperature of over 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
  • A typical refrigerant used on newer air conditioning and heat pump ssytems