ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 100%
  • 75%
  • 80%
  • 90%

2: Refrigerants shall be classified by

  • toxicity and flammability
  • maximum permissible quantities of each group
  • requirements for commercial, industrial, and residential occupancies
  • color codes

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

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

4: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

5: The Board of Boilers adopts by reference

  • the 1997 ANSI/ASHRAE Safety Code
  • the MACS Pressure Vessel Code of Massachusetts
  • MSCA Code
  • Montreal Protocol Safety Code

6: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • low side of the system
  • the vapor side of the system
  • high side of the system
  • the liquid side of the system

7: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UM or UL
  • UL and UM
  • UL and UR
  • UV or UR

8: 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)

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

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

  • B2
  • A3
  • C3
  • A2

10: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 80%
  • 90%
  • 75%
  • 100%

11: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • regularly
  • bi-annually
  • quarterly
  • annually

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

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

13: How many gallons of water per pound of ammonia do you need?

  • 5
  • 1
  • 15
  • 20

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

  • stainless steel
  • black iron
  • magnesium
  • copper

15: A restaurant is classified as a

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

16: A class B2 refrigerant is considered

  • toxic and non-flammable
  • non-toxic and highly flammable
  • non-toxic and non-flammable
  • toxic and somewhat flammable

17: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 20
  • 10
  • 25
  • 15

18: Machinery rooms must be vented to ______?

  • unoccupied spaces
  • neutralizing tank
  • basement
  • outdoors

19: B3 refrigerants are considered

  • toxic but non-flammable
  • toxic and highly flammable
  • non-toxic but non-flammable
  • non-toxic but flammable

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

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

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

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

22: Evaporators within 18" of a heating coil must be equipped with a

  • high limit control
  • pressure relief device
  • low limit control
  • zone valve

23: Halo-carbon refrigerants cannot be used with what material?

  • Copper
  • Aluminum
  • Stainless Steel
  • Magnesium alloy

24: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection and a rupture disc
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device
  • over pressure protection

25: 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