ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Most CFC's are

  • inert
  • toxic
  • inert but toxic
  • flammable

2: How many different groups of refrigerants are there?

  • 7
  • 11
  • 3
  • 15

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

  • 90%
  • 80%
  • 75%
  • 100%

4: How many refrigerant classifications are there for flammability?

  • 1
  • 2
  • 3
  • 7

5: Indirect systems using Group II refrigerants

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

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

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

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

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

8: What would be the classification for Stop & Shop grocery store?

  • Industrial
  • Instituional
  • Large mercantile
  • Place of assembly

9: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

10: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

11: Class 3 refrigerants are

  • non-flammable
  • toxic
  • non-toxic
  • highly flammable

12: What section of ASHRAE-15 governs pressure vessels?

  • OSHA
  • Section 7 ASHRAE-15 ASME VIII fired
  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 9 ASHRAE-15 ASME VIII unfired

13: 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.

  • 15
  • 75
  • 55
  • 50

14: 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

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

  • Zinc
  • Magnesium
  • Aluminum
  • Copper

16: 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

17: How many flammability classifications are refrigerants in?

  • 5
  • 2
  • 7
  • 3

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

  • 500 lbs
  • 330 lbs
  • 55 lbs
  • 660 lbs

19: 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

20: What kind of material can't be used on the outlet of a relief valve?

  • Stainless Steel
  • Copper
  • Aluminum
  • PVC

21: 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

22: The discharge relief valve is located (9.4.6)

  • between the compressor and oil separator
  • between the compressor and the stop valve
  • between the compressor and reciever
  • on top of the condensor

23: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

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

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