ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What type refrigerant is NOT ozone depleting?

  • CFC
  • Halon
  • HCFC
  • HFC

2: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • the return air ducted system
  • the mechanical room housing the refrigeration system
  • Machinery rooms need not be vented
  • the outdoors

3: 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

4: 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

5: What section governs pressure vessels?

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

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

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

7: Where a refrigeration or air conditioning system is installed,

  • A field inspection shall be made before it is put into service
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers
  • the form or certificate shall be authorized by the Department of Public Safety

8: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • you can never change refrigerants
  • Place sign, check for leaks, and insulate suction line
  • Make sure its compatible, notify owner, and notify AHJ.
  • Nothing must be done

9: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

10: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • CFC-11
  • HCFC-123
  • ammonia
  • Lithium bromide

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

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

12: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above

13: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • institutional occupancy
  • public assembly occupancy
  • commercial occupancy
  • illegal occupancy

14: _____ and its alloys are suitable for use with ammonia systems.

  • Copper
  • Aluminum
  • Zinc
  • Magnesium

15: What refrigerant were phased out in 2004?

  • R-11
  • R-134a
  • R-12
  • R-22

16: Dual-pressure relief devices should be installed on

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

17: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 6.6 lbs
  • 13.9 lbs
  • 22 lbs
  • 44 lbs

18: Relief valves are rated in

  • gallons of water per hour
  • pounds of air per minute
  • gallons of water per minute
  • pounds of air per hour

19: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class A machinery room
  • Class B machinery room
  • Class T machinery room
  • Class M machinery room

20: R-717 is

  • carbon dioxide
  • water
  • ammonia
  • trichloromethane

21: When a refrigeration or air conditioning system is installed

  • a field inspection shall be made before it is put into service
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall not be operated below prescribed pressures
  • it shall be approved by the owner for proper operation.

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

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

23: 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
  • competent welder
  • licensed welder

24: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • place sign, check for leaks, insulate
  • you can't change refrigerants
  • nothing must be done
  • make sure it's compatible, notify owner, notify A.H.J

25: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above