ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Each machinery room shall contain

  • high and low pressure controls
  • 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
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

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

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

3: 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'

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

  • R-22
  • R-12
  • R-113
  • R-11

5: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

6: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

7: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

8: A relief valve shall be located at least ___ above grade.

  • 36'
  • 10'
  • 25'
  • 15'

9: A relief valve discharge capacity is rated in

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

10: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

11: A class A3 refrigerant is considered

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

12: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

13: Direct systems using Group II refrigerants

  • shall be installed per instruction of the AHJ
  • shall be installed in Class T machinery rooms
  • shall be allowed to be used for human comfort.
  • shall not be used for air condition for human comfort

14: A hotel is considered a _______ occupancy.

  • institutional
  • commercial
  • residential
  • mercantile

15: How many refrigerant classifications are there for flammability?

  • 1
  • 2
  • 3
  • 7

16: How many different groups of refrigerants are there?

  • 15
  • 7
  • 11
  • 3

17: What section of ASHRAE-15 governs pressure vessels?

  • OSHA
  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • Section 6 ASHRAE-34 ASME VIII unfired

18: What type refrigerant is NOT ozone depleting?

  • CFC
  • Halon
  • HFC
  • HCFC

19: The certificate of inspection

  • shall be posted on the compressor shell or electrical panel at the unit
  • shall be authorized by a notarized insurance company
  • 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

20: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class M machinery room
  • Class T machinery room
  • Class B machinery room
  • Class A machinery room

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

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

22: How many CFMs are required per square foot of commercial office occupied space

  • .5 CFM
  • 5 CFM
  • 20 CFM
  • 15 CFM

23: An example of direct system is

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

24: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 5
  • 1

25: What is R-22?

  • Chlorofluoromethane
  • CCFCM
  • Chlorodifluoromethane
  • HFC