ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Class A refrigerants are considered

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

2: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1
  • 1.5
  • 2.2
  • 1.2

3: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • business occupancy
  • public assembly occupancy.
  • commercial occupancy
  • mercantile occupancy

4: Ammonia can come in contact with _______ ?

  • Brass
  • Copper tubing
  • Aluminum
  • Copper

5: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

6: What is an example of institutional occupancy?

  • Hospital
  • Football stadium
  • Dorms
  • Shopping mall

7: No open flames are allowed in the machinery room unless?

  • Approved by the installing contractor
  • Never can be allowed
  • Approved by the authorized person
  • Only when combustion air is provided from outside of the machinery room

8: 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

9: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 18
  • 33
  • 50
  • 22

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

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

11: R-11 belongs to Group

  • A-2
  • A-1
  • B-3
  • B-1

12: What pipe can not be used for refrigeration?

  • K
  • L
  • N
  • M

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

  • Stainless Steel
  • Copper
  • Aluminum
  • PVC

14: What refrigerant were phased out in 2004?

  • R-11
  • R-12
  • R-134a
  • R-22

15: 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

16: Trichlorofluoromethane is the name of what refrigerant?

  • R-113
  • R-502
  • R-12
  • R-11

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

  • Magnesium
  • Copper
  • Aluminum
  • Zinc

18: Ammonia belongs to Group

  • B-2
  • B-1
  • A-2
  • A-1

19: A High-Probablity 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
  • 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

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

  • C-3
  • B-2
  • A-3
  • A-1

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

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

22: NH3 is

  • lithium bromide
  • ammonia
  • R-508A
  • R-718

23: Joints in refrigeration piping must be _____ before being covered?

  • Inspected
  • Pressurized
  • Insulated
  • Leak tested

24: Pressure relief valves shall be marked with the data from

  • Section IV Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code

25: When air is ducted through a machine room that services occupied space, What must be done?

  • Ducted and sealed
  • Insulated and cross broke
  • Flanged and gasketed
  • Welded and seamed.