ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • Large mercantile
  • Place of assembly
  • Industrial
  • Instituional

2: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

3: What is R-22?

  • HFC
  • Chlorodifluoromethane
  • CCFCM
  • Chlorofluoromethane

4: A High-Probablity system

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

5: Refrigerants shall be classified by

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

6: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

7: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

8: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the low side
  • the aggregate of the high side and low side
  • the high side
  • 2.5 times the design pressure

9: A movie theater would be considered a

  • public assembly occupancy
  • mixed occupancy
  • commercial occupancy
  • institutional occupancy

10: 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

11: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

12: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 90
  • 80
  • 110
  • 100

13: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

14: What must be done to refrigerant pipes before being buried?

  • Leaked checked
  • Encased
  • Coated
  • Certified

15: What would be the classification of a church?

  • Place of assembly
  • Industrial
  • Institutional
  • Large mercantile

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

  • 5
  • 1
  • 15
  • 20

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

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

18: 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
  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • shall not be prohibited
  • shall be prohibited

19: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When there are sprinklers above
  • When its white
  • When there is a space 6' or more above it
  • When it's used as part of a supply or return air system

20: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Muffler
  • Stop valve
  • Foot valve
  • Moisture indicator

21: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

22: What is an egress?

  • A code violation
  • A valve put on the low side of the system to prevent frosting
  • An escape route
  • An entrance or exit

23: Ammonia can come in contact with _______ ?

  • Brass
  • Aluminum
  • Copper tubing
  • Copper

24: What is a Category "D" fluid?

  • A typical refrigerant used on newer air conditioning and heat pump ssytems
  • Any fluid that exceeds 150 psig and has design temperature of over 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F

25: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

  • public assembly occupancy
  • commercial occupancy
  • mixed occupancy
  • institutional occupancy