ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Which occupancy can ammonia be used in?

  • redifential
  • industrial
  • depends on the quantity of freon
  • commercial

2: The Board of Boilers adopts by reference

  • Montreal Protocol Safety Code
  • the 1997 ANSI/ASHRAE Safety Code
  • the MACS Pressure Vessel Code of Massachusetts
  • MSCA Code

3: A restaurant is classified as a

  • public assembly occupancy
  • mixed occupancy
  • commercial occupancy
  • large mercantile occupancy

4: Liquid level gauges must be provided with what?

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

5: When a refrigeration or air conditioning system is installed

  • a field inspection shall be made before it is put into service
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall not be operated below prescribed pressures
  • it shall be approved by the owner for proper operation.

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

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

7: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 15
  • 18
  • 24
  • 10

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

  • 75%
  • 80%
  • 90%
  • 100%

9: What is a Category "M" fluid?

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

10: 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.

  • 9.00'
  • 8'4"
  • 7.25'
  • 7.00'

11: What would be the classification of a prison?

  • Institutional
  • Place of assembly
  • Large mercantile
  • Industrial

12: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • load-side of the contactor in
  • 24 volt secondary side of the Class 2 transformer to the thermostat
  • first disconnect in
  • breaker panel in

13: All serviceable components of a refrigeration system shall be provided with

  • safe access
  • service manuals
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • manufactures instructions on start-up procedures

14: 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.

  • 100
  • 350
  • 250
  • 400

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

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

16: Halogenated refrigerants cannot be used with what material?

  • Magnesium alloy
  • Stainless steel
  • Aluminum
  • Copper

17: 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

18: How many flammability classifications are refrigerants in?

  • 3
  • 7
  • 2
  • 5

19: When a refrigerating machinery room is used, the emergency procedures shall be posted

  • inside the room, immediately adjacent to each door
  • on a conspicuous card located near the compressor
  • on a conspicuous card located near the evaporator
  • outside the room, immediately adjacent to each door

20: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

21: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

22: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?

  • Temperature limiter device
  • T&P device
  • Relief valve
  • Circuit Breaker

23: Name three things that must be done when changing refrigeration lubricant?

  • Nothing must be done
  • You can't change lubricants.
  • Place sign, check for leaks, insulate
  • Make sure it's compatible, notify owner, notify AHJ

24: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

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

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