ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A class B2 refrigerant is considered

  • toxic and non-flammable
  • non-toxic and non-flammable
  • toxic and somewhat flammable
  • non-toxic and highly flammable

2: 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

3: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

4: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 20
  • 10
  • 15
  • 25

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

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

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: Ammonia is under what safety classification?

  • B2
  • A3
  • B3
  • B1

8: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • either a fusible plug or a pressure relief device
  • a fusible plug
  • a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified

9: The certificate of inspection

  • shall be authorized by a notarized insurance company
  • shall be posted on the compressor shell or electrical panel at the unit
  • shall be $20 and an additional fee of $1 for each tone above 20 tons
  • shall be posted and protected from dirt, water, and other elements

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

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

11: What does safe access mean?

  • A clear unobstructed path to the equipment and controls
  • Well-lit exit signs
  • OSHA approved
  • Locked doors

12: How many CFMs are required per square foot of commercial office occupied space

  • 15 CFM
  • .5 CFM
  • 20 CFM
  • 5 CFM

13: What is R-22?

  • Chlorodifluoromethane
  • HFC
  • CCFCM
  • Chlorofluoromethane

14: How many different groups of refrigerants are there?

  • 3
  • 15
  • 7
  • 11

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

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

16: How many flammability classifications are refrigerants in?

  • 2
  • 5
  • 3
  • 7

17: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-11
  • Flush with RX-11
  • Flush with R-718
  • Flush with ammonia

18: Class 3 refrigerants are

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

19: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

20: Trichlorofluoromethane is the name of what refrigerant?

  • R-113
  • R-502
  • R-12
  • R-11

21: Who authorizes changes to the safety codes?

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

22: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 5.5
  • 2.5
  • 3.0
  • 2.0

23: All serviceable components of a refrigeration system shall be provided with

  • manufactures instructions on start-up procedures
  • safe access
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • service manuals

24: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

25: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above