ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

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

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

3: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

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

  • 100%
  • 80%
  • 75%
  • 90%

5: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

6: What is the minimum height refrigeration piping should be placed against walls?

  • 6'
  • 72"
  • 7.25'
  • Ceiling height

7: When must refrigeration system covered by the code be inspected?

  • Annually and when installed
  • Not required
  • Annually
  • Upon installation

8: A class B1 refrigerant is considered

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

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

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

10: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

11: R-22 is classified as a ____ refrigerant on the safety matrix.

  • A-1
  • A-2
  • B-2
  • B-1

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

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

13: Pressure relief valves shall be marked with the data from

  • Section IV Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code

14: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-113
  • R-11
  • R-12
  • R-22

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

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

16: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • refrigerant sensing
  • A group sensing
  • phosgene gas sening
  • CO Sensing

17: Pressure vessels with an internal volume of 3 cubic feet or more

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

18: How far from the ground does a relief valve need to be?

  • At least 25' above grade
  • Not more than 3' above grade
  • At least 20' above grade
  • At least 15' above grade

19: What would be the classification of a church?

  • Institutional
  • Industrial
  • Large mercantile
  • Place of assembly

20: Each machinery room shall contain

  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • high and low pressure controls

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

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

22: The certificate of inspection

  • shall be authorized by a notarized insurance company
  • shall be posted on the compressor shell or electrical panel at the unit
  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be posted and protected from dirt, water, and other elements

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

  • True
  • False

24: What is a Category "D" fluid?

  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
  • 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 typical refrigerant used on newer air conditioning and heat pump ssytems

25: How many different groups of refrigerants are there?

  • 3
  • 15
  • 7
  • 11