ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many groups of refrigerants are there?

  • 7
  • 1
  • 5
  • 3

2: 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

3: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

4: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • R-718 is not rated unlimited because it's a dangerous refrigerant
  • Because it's water
  • Because it's a non-flammable refrigerant
  • Because it's cheap

5: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • licensed technician
  • licensed welder
  • welder qualified
  • competent welder

6: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by

  • District Engineering Inspectors
  • Commissioned Inspectors
  • Master licensed Technician
  • both a or b

7: 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

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

8: When should a relief valve start to function?

  • Two times it's working pressure
  • 10 psi before it's set pressure
  • At it's set pressure
  • Before the purge station discharges

9: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 100,000
  • 1,000
  • 100
  • 10,000

10: How much refrigerant can be stored in a mechanical room outside of the system?

  • 150
  • 330
  • 200
  • 100

11: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • relief plug
  • fusion plug
  • rupture plug
  • fusible plug

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

  • True
  • False

13: What refrigerant doesn't have to be classified?

  • R-718
  • R-134A
  • R-717
  • R-422A

14: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

15: What refrigerant were phased out in 2004?

  • R-134a
  • R-11
  • R-12
  • R-22

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

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

17: How many different groups of refrigerants are there?

  • 11
  • 3
  • 15
  • 7

18: Which occupancy can ammonia be used in?

  • industrial
  • commercial
  • depends on the quantity of freon
  • redifential

19: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 800F
  • 700F
  • 600F
  • 1000F

20: Fusible plugs shall not be used with pressure vessels of

  • 15 cubic feet or more
  • 3 cubic feet or less
  • 15 square feet or less
  • 3 cubic feet or more

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

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

22: R-11 belongs to Group

  • A-1
  • B-1
  • B-3
  • A-2

23: Each machinery room shall contain

  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • high and low pressure controls

24: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 20
  • 75
  • 50
  • 15

25: Machinery rooms must be vented to ______?

  • outdoors
  • unoccupied spaces
  • basement
  • neutralizing tank