ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

2: R-717 is

  • ammonia
  • carbon dioxide
  • trichloromethane
  • water

3: What must be done to refrigerant pipes before being buried?

  • Coated
  • Encased
  • Leaked checked
  • Certified

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

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

5: NH3 is

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

6: 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

7: What is an example of institutional occupancy?

  • Hospital
  • Football stadium
  • Dorms
  • Shopping mall

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

  • 10'
  • 25'
  • 36'
  • 15'

9: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • welder qualified
  • licensed technician
  • licensed welder
  • competent welder

10: An example of direct system is

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

11: R-11 belongs to Group

  • B-1
  • A-2
  • B-3
  • A-1

12: Which occupancy can ammonia be used in?

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

13: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

14: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 22
  • 18
  • 33
  • 50

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

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

16: 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.

  • 550
  • 100
  • 350
  • 50

17: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

18: How are refrigerant blends classified?

  • Based on worst case fractionation
  • Based on the oil used
  • Based on best case Fractionation
  • Blends don't have to be classified

19: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 15
  • 10
  • 18
  • 24

20: Which refrigerant class listed below is the most flammable?

  • C-3
  • A-3
  • A-1
  • B-2

21: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

22: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When there are sprinklers above
  • When there is a space 6' or more above it
  • When its white
  • When it's used as part of a supply or return air system

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

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

24: 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

25: R-22 falls under which safety classification?

  • A-2
  • B-2
  • A-1
  • B-1