ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: An example of direct system is

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

2: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

3: Dual-pressure relief devices should be installed on

  • vessels of 10 cubic feet or more
  • vessels of 10 cubic feet or less
  • vessels of 3 cubic feet or less
  • vessels of 3 cubic feet or more

4: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UL”
  • “UV”
  • “U” or “UM”
  • “UM” and “UV”

5: What type of pressure relief device is used on a CO2 system?

  • Rupture disk
  • Gate valve
  • Glove valve
  • Fusible plug

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

  • condenser
  • bleed valve
  • relief valve
  • service valve

7: A hotel is considered a _______ occupancy.

  • commercial
  • residential
  • institutional
  • mercantile

8: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 10,000
  • 100,000
  • 1,000
  • 100

9: Class T machine room

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

10: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

11: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

12: 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

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

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

14: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

15: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • of Group B2 refrigerant shall be prohibited
  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • shall not be prohibited
  • shall be prohibited

16: 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

17: Pressure vessels with an internal volume of 3 cubic feet or less

  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs
  • do not need pressure relief protection
  • shall use pressure relief devices

18: 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

19: 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

20: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 5.5
  • 3.0
  • 2.0
  • 2.5

21: When an inspection is needed, how often must it be done?

  • every 36 months
  • annually
  • every 18 months
  • every 24 months

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

  • III
  • 15
  • 10
  • 25

23: R-22 is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-1
  • B-2
  • A-2

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

  • regularly
  • annually
  • quarterly
  • bi-annually

25: A professional or office building would be considered what type of occupancy?

  • commercial
  • business
  • mercantile
  • public assembly