ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many groups of refrigerants are there?

  • 5
  • 7
  • 3
  • 1

2: Who is permitted to access a refrigeration machine room?

  • Any employee
  • Contractors only
  • Anyone, it's a completely safe area
  • Authorized persons only

3: R-11 belongs to Group

  • B-1
  • B-3
  • A-1
  • A-2

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

  • A-1
  • B-1
  • B-2
  • A-2

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

  • Copper
  • PVC
  • Aluminum
  • Stainless Steel

6: 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

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

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

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

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

9: What happens after your initial inspection of a pressure vessel?

  • Notify the Fire Marshal that the system has been inspected and approved
  • Notify the AHJ to let them know that the system been inspected
  • Inspector leaves a metal tag with a certification listed on it
  • There is a temporary shut-down until a final inspection can be performed.

10: What is the refrigerant chlorodifluoromethane?

  • R-134a
  • R-123
  • R-22
  • R-12

11: A High-Probability System

  • is a system highly likely to leak form 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 a failed connection will enter the occupied space
  • is such that a leak of refrigerant from a failed connection will enter an unoccupied space

12: A restaurant is classified as a

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

13: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

14: How much clearance do you need around the perimeter of electrical panels?

  • 24"
  • 18"
  • 12"
  • 36"

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

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

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

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

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

  • 90%
  • 80%
  • 100%
  • 75%

18: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

19: Pressure vessels with an internal volume of 3 cubic feet or more

  • do not need pressure relief protection
  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices

20: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

21: A hotel is considered a _______ occupancy.

  • institutional
  • mercantile
  • residential
  • commercial

22: Class 3 refrigerants are

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

23: Pipe identification labels are required when the system contains more than

  • 120 lbs
  • 65 lbs
  • 110 lbs
  • 55 lbs

24: 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

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

  • Zinc
  • Magnesium
  • Copper
  • Aluminum