ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: R-717 is

  • ammonia
  • trichloromethane
  • water
  • carbon dioxide

2: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 3
  • 5
  • 1
  • 2

3: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 550 lbs
  • 330 lbs.
  • 660 lbs
  • 55 lbs

4: 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

5: 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

6: 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
  • low side of the system
  • the liquid side of the system
  • the vapor side of the system

7: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

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: Each machinery room shall contain

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

10: Ammonia (NH3) is a group III refrigerant

  • True
  • False

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

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

12: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

13: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 13.9 lbs
  • 6.6 lbs
  • 22 lbs
  • 44 lbs

14: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

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

  • 1
  • 1.2
  • 2.2
  • 1.5

16: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • 2.5 times the design pressure
  • the aggregate of the high side and low side
  • the high side
  • the low side

17: What is an egress?

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

18: Name a CFC refrigerant(s):

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

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

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

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

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

21: 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

22: How many flammability classifications are refrigerants in?

  • 3
  • 5
  • 7
  • 2

23: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 30 days
  • 14 days
  • 1 week
  • 2 months

24: Refrigerants shall be classified by

  • maximum permissible quantities of each group
  • color codes
  • toxicity and flammability
  • requirements for commercial, industrial, and residential occupancies

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

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