ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

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

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

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

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

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

  • 15
  • 25
  • 10
  • III

6: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 100
  • 90
  • 110
  • 80

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

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

8: What is the refrigerant dichlorodifluoromethane?

  • R-12
  • R-22
  • R-134A
  • R-123

9: Ammonia (NH3) is a group III refrigerant

  • True
  • False

10: What happens after your initial inspection of a pressure vessel?

  • Inspector leaves a metal tag with a certification listed on it
  • Notify the Fire Marshal that the system has been inspected and approved
  • There is a temporary shut-down until a final inspection can be performed.
  • Notify the AHJ to let them know that the system been inspected

11: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 50
  • 15
  • 55
  • 75

12: How many groups of refrigerants are there?

  • 7
  • 5
  • 3
  • 1

13: NH3 is

  • ammonia
  • R-718
  • lithium bromide
  • R-508A

14: Can you use Ammonia in industrial applications?

  • Yes, Under certain condidtions
  • When mixed with R-718
  • Yes, always
  • No, never

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

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

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

  • 25'
  • 30'
  • 20'
  • 15'

17: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • 24 volt secondary side of the Class 2 transformer to the thermostat
  • load-side of the contactor in
  • first disconnect in
  • breaker panel in

18: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Copper
  • Nickel
  • Zinc
  • Magnesium

19: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 75%
  • 80%
  • 90%
  • 100%

20: Doors communicating with outside from a mechanical room must be?

  • Self-closing, aligned, fire door
  • Self-closing, approved, fire door
  • Steel, approved, weather-stripped
  • Self-closing, wooden, fire door

21: All electrical work done on refrigeration systems must comply with

  • NEC and Massachusetts Modifications
  • ASHREA-15 Section 9.2.1
  • Department of Energy
  • OSHA

22: What is an egress?

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

23: What section governs pressure vessels?

  • OSHA
  • Section 8 ASHREA 15 ASME unfired
  • Section ASHREA 34
  • Section 1 ASHREA 15 ASME fired

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

  • True
  • False

25: Which refrigerant replaced R-12?

  • R-410A
  • R-134A
  • R-407A
  • R-22