ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 99%
  • 75%
  • 90%
  • 80%

2: Which occupancy can ammonia be used in?

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

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

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

4: What is Trichlorotrifluoromethane?

  • R-12
  • R-113
  • R-13
  • 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: An example of direct system is

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

7: What is an example of institutional occupancy?

  • Football stadium
  • Dorms
  • Hospital
  • Shopping mall

8: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall be inspected by the Boiler of Inspectors bi-annually
  • shall have a pressure limiting device installed on the high side of the system
  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed

9: Pipe identification labels are required when the system contains more than

  • 65 lbs
  • 110 lbs
  • 55 lbs
  • 120 lbs

10: Refrigerant restricted in 2004 but used for transition for decades:

  • R-134A
  • R-123
  • R-22
  • R-11

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

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

12: When air is ducted through a machine room that services occupied space, What must be done?

  • Ducted and sealed
  • Flanged and gasketed
  • Welded and seamed.
  • Insulated and cross broke

13: Where must a refrigeration contractor's license number be displayed?

  • Trucks, license plates, and uniforms
  • Truck, office, every job, and on all equipment
  • Trucks, invoices, and advertising
  • Uniforms, checks, and invoices.

14: What refrigerant were phased out in 2004?

  • R-22
  • R-12
  • R-134a
  • R-11

15: What is not a requirement of a Class T machine room?

  • Self-closing doors
  • Fire hose connected to the building fire protection system.
  • Tight fitting doors
  • Automatic ventilation

16: Indirect systems using Group II refrigerants

  • shall have all refrigerant containing parts except piping, installed in a Class T machine room
  • shall be used in refrigeration system less than 1,000 lbs
  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used for mechanical equipment only

17: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device
  • over pressure protection
  • over pressure protection and a rupture disc

18: Pressure vessels with an internal volume of 3 cubic feet or more

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

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

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

20: 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

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

  • 20'
  • 15'
  • 30'
  • 25'

22: 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

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

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

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

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

25: A Low-Probability System

  • is such that a leak of refrigerant from a failed connection can not enter the occupied space
  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak form a failed connection or component of such system