ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 90%
  • 100%
  • 75%
  • 80%

2: Where a refrigeration or air conditioning system is installed,

  • it shall not be operated below prescribed pressuers
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • the form or certificate shall be authorized by the Department of Public Safety
  • A field inspection shall be made before it is put into service

3: Who approves containers for refrigerants?

  • E.P.A
  • D.O.E
  • D.O.D
  • D.O.T

4: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

5: Halogenated refrigerants cannot be used with what material?

  • Copper
  • Magnesium alloy
  • Stainless steel
  • Aluminum

6: All machine rooms must be outfitted with a detector that _______?

  • activates an audible alarm
  • activates a visual alarm
  • starts the ventilation system
  • All of the above

7: How many groups of refrigerants are there?

  • 5
  • 3
  • 7
  • 1

8: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • breaker panel in
  • load-side of the contactor in
  • 24 volt secondary side of the Class 2 transformer to the thermostat
  • first disconnect in

9: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 18
  • 24
  • 48
  • 36

10: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 44 lbs
  • 22 lbs
  • 6.6 lbs
  • 13.9 lbs

11: A Low-Probability 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 a system highly likely to leak form a failed connection or component of such system
  • is such that a leak of refrigerant from a failed connection can not enter the occupied space

12: R-410A is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-1
  • A-2
  • B-2

13: Class T machine room

  • shall include closets used for setting equipment
  • shall have remote controls to stop the action of the refrigerant compressor
  • has no flame producing apparatus permanently installed
  • shall have refrigerant leak detecting systems installed inside and outside the room

14: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

15: 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

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

  • Aluminum
  • Copper
  • Stainless Steel
  • PVC

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

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

18: What is not a requirement of a class T machine room?

  • self-closing doors
  • automatic ventilation
  • tight fitting doors
  • fire hose connection to the building fire protection system

19: 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
  • institutional occupancy
  • public assembly occupancy

20: Who authorizes changes to the safety codes?

  • Board of Boilers
  • Person in charge of the facility
  • Contractor who last serviced the system.
  • Person who pulled the permit

21: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • high pressure
  • low pressure
  • design pressure
  • critical pressure

22: R-11 belongs to Group

  • A-1
  • A-2
  • B-1
  • B-3

23: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

24: A restaurant is classified as a

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

25: When must refrigeration system covered by the code be inspected?

  • Annually and when installed
  • Upon installation
  • Annually
  • Not required