ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UM or UL
  • UL and UR
  • UV or UR
  • UL and UM

2: What pipe can not be used for refrigeration?

  • M
  • N
  • K
  • L

3: Class T machine room

  • shall have remote controls to stop the action of the refrigerant compressor
  • has no flame producing apparatus permanently installed
  • shall include closets used for setting equipment
  • shall have refrigerant leak detecting systems installed inside and outside the room

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

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

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

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

6: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • bi-annually
  • regularly
  • quarterly
  • annually

7: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

8: What is a Category "M" fluid?

  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • 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
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
  • A typical refrigerant used on newer air conditioning and heat pump systems

9: Relief valves are rated in

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

10: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 25
  • III
  • 15
  • 10

11: Stop valves shall not be permitted between the system and the

  • service valve
  • relief valve
  • condenser
  • bleed valve

12: What is a Category "D" fluid?

  • A typical refrigerant used on newer air conditioning and heat pump ssytems
  • 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

13: A pressure relief should be located at least _______ from windows and doors.

  • 20'
  • 30'
  • 15'
  • 25'

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

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

15: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

16: What would be the classification of a prison?

  • Industrial
  • Place of assembly
  • Large mercantile
  • Institutional

17: What refrigerant is an inorganic compound?

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

18: 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.

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

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

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

20: A movie theater would be considered a

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

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

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

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

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

23: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 25
  • 15
  • 20
  • 10

24: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

  • the same
  • higher
  • lower
  • there is no Group B1 refrigerants

25: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • the owner shall be informed
  • explosion precautions must be taken
  • gas masks must be worn
  • no flames shall be permitted