ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: R-22 is classified as a ____ refrigerant on the safety matrix.

  • A-2
  • B-1
  • B-2
  • A-1

2: What would be the classification of a prison?

  • Place of assembly
  • Large mercantile
  • Institutional
  • Industrial

3: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • low pressure
  • design pressure
  • critical pressure
  • high pressure

4: 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

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

5: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the occupied space
  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak from a failed connection or component of such system

6: What type refrigerant is NOT ozone depleting?

  • HFC
  • Halon
  • CFC
  • HCFC

7: What would be the classification of a church?

  • Industrial
  • Large mercantile
  • Institutional
  • Place of assembly

8: Most CFC's are

  • flammable
  • inert
  • inert but toxic
  • toxic

9: 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

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

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

11: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise

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

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

13: 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

14: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

15: 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.

  • 55
  • 15
  • 50
  • 75

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

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

17: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 99%
  • 80%
  • 90%
  • 75%

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

  • Copper
  • Stainless Steel
  • Aluminum
  • PVC

19: 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

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

  • Zinc
  • Nickel
  • Copper
  • Magnesium

21: Halogenated refrigerants cannot be used with what material?

  • Stainless steel
  • Magnesium alloy
  • Aluminum
  • Copper

22: 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

23: 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
  • 50
  • 100
  • 350

24: The gauge thickness required on a CO2 tank construction is

  • 5/16"
  • 3/32"
  • 1/16"
  • 1/8"

25: Can you use Ammonia in industrial applications?

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