ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Class T machine room

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

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

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

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

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

4: Who authorizes changes to the safety codes?

  • Board of Boilers
  • Person who pulled the permit
  • Contractor who last serviced the system.
  • Person in charge of the facility

5: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

6: What section governs pressure vessels?

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

7: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

8: Ammonia belongs to Group

  • A-1
  • A-2
  • B-1
  • B-2

9: Which occupancy can ammonia be used in?

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

10: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

11: Can you use Ammonia in industrial applications?

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

12: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

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

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

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

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

15: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?

  • Relief valve
  • Circuit Breaker
  • Temperature limiter device
  • T&P device

16: A relief valve discharge capacity is rated in

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

17: Dual-pressure relief devices should be installed on

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

18: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 1
  • 2
  • 5
  • 3

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

  • B2
  • A3
  • C3
  • A2

20: Halogen refrigerants are corrosive to which type of metal?

  • black iron
  • magnesium
  • copper
  • stainless steel

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

  • 10'
  • 36'
  • 15'
  • 25'

22: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Classifed
  • Insulated and installed in a pipe duct (Encased)
  • Leak checked
  • Certified

23: A restaurant is classified as a

  • mixed occupancy
  • large mercantile occupancy
  • public assembly occupancy
  • commercial occupancy

24: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by

  • District Engineering Inspectors
  • Commissioned Inspectors
  • Master licensed Technician
  • both a or b

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

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