ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Pipe identification labels are required when the system contains more than

  • 65 lbs
  • 120 lbs
  • 55 lbs
  • 110 lbs

2: A High-Probablity 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 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

3: Class A refrigerants are considered

  • toxic
  • non-flammable
  • non-toxic
  • flammable

4: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • ammonia
  • HCFC-123
  • CFC-11
  • Lithium bromide

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

  • True
  • False

6: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use rupture discs or duel pressure relief valves
  • shall use pressure relief devices
  • shall use pressure relief devices or fusible plugs
  • shall use fusible plugs

7: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

8: Relief valves are rated in

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

9: What refrigerant is an inorganic compound?

  • Ammonia
  • R-132A
  • R-22
  • R-410A

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

  • 2.2
  • 1
  • 1.2
  • 1.5

11: All electrical work done on refrigeration systems must comply with

  • Department of Energy
  • ASHREA-15 Section 9.2.1
  • OSHA
  • NEC and Massachusetts Modifications

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

  • 75%
  • 80%
  • 100%
  • 90%

13: What type of copper is not permitted on refrigeration systems?

  • Type K
  • Type L
  • Type N
  • Type M

14: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 66
  • 50
  • 22
  • 25

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

  • Inspected
  • Leak tested
  • Pressurized
  • Insulated

16: A relief valve discharge capacity is rated in

  • PSIG
  • temperature minus pounds of air per second divided by release rate squared
  • PSIA
  • Pounds of air per minute.

17: 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.

  • 50
  • 350
  • 550
  • 100

18: Ammonia (NH3) is a group III refrigerant

  • True
  • False

19: What is not a requirement of a class T machine room?

  • automatic ventilation
  • self-closing doors
  • tight fitting doors
  • fire hose connection to the building fire protection system

20: What section governs pressure vessels?

  • Section 8 ASHREA 15 ASME unfired
  • OSHA
  • Section ASHREA 34
  • Section 1 ASHREA 15 ASME fired

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: 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

23: 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.

  • 350
  • 250
  • 400
  • 100

24: Fusible plugs shall not be used with pressure vessels of

  • 3 cubic feet or more
  • 3 cubic feet or less
  • 15 square feet or less
  • 15 cubic feet or more

25: All machine rooms must be outfitted with a detector that _______?

  • activates an audible alarm
  • activates a visual alarm
  • starts the ventilation system
  • All of the above