ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 400
  • 350
  • 100
  • 250

3: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

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

  • Stainless Steel
  • PVC
  • Aluminum
  • Copper

5: 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

6: 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

7: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-22
  • R-11
  • R-12
  • R-113

8: How many different groups of refrigerants are there?

  • 3
  • 15
  • 7
  • 11

9: 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.

  • 25
  • 10
  • 20
  • 15

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

  • Copper
  • Magnesium
  • Zinc
  • Nickel

11: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 24
  • 10
  • 15
  • 18

12: 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
  • Lithium bromide
  • ammonia
  • HCFC-123

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

  • over pressure protection
  • 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 and a rupture disc

14: What does safe access mean?

  • Well-lit exit signs
  • A clear unobstructed path to the equipment and controls
  • OSHA approved
  • Locked doors

15: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

16: What is the minimum height refrigeration piping should be placed against walls?

  • 72"
  • 6'
  • Ceiling height
  • 7.25'

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

  • Aluminum
  • Magnesium
  • Copper
  • Zinc

18: 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
  • 100
  • 50
  • 350

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

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

20: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • A group sensing
  • phosgene gas sening
  • CO Sensing
  • refrigerant sensing

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

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

22: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

23: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

24: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • of Group B2 refrigerant shall be prohibited
  • shall be prohibited
  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • shall not be prohibited

25: When a refrigerating machinery room is used, the emergency procedures shall be posted

  • on a conspicuous card located near the compressor
  • on a conspicuous card located near the evaporator
  • inside the room, immediately adjacent to each door
  • outside the room, immediately adjacent to each door