ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many flammability classifications are refrigerants in?

  • 7
  • 2
  • 3
  • 5

2: The certificate of inspection

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

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

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

4: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

5: There can be no airflow from an occupied space through a machine room unless what?

  • System is high velocity
  • System is ducted and sealed
  • Duct is not located in the ceiling
  • None of the above.

6: Who approves containers for refrigerants?

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

7: Who authorizes changes to the safety codes?

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

8: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Copper
  • Zinc
  • Magnesium
  • Nickel

9: What is an egress?

  • A valve put on the low side of the system to prevent frosting
  • An entrance or exit
  • A code violation
  • An escape route

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

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

11: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

12: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

13: A pressure relief should be located at least _______ from windows and doors.

  • 20'
  • 15'
  • 25'
  • 30'

14: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

15: 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.

16: What would be the classification for Stop & Shop grocery store?

  • Instituional
  • Large mercantile
  • Place of assembly
  • Industrial

17: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 50
  • 550
  • 350
  • 100

18: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

19: Dual-pressure relief devices should be installed on

  • vessels of 10 cubic feet or less
  • vessels of 10 cubic feet or more
  • vessels of 3 cubic feet or more
  • vessels of 3 cubic feet or less

20: Relief valves are rated in

  • gallons of water per minute
  • gallons of water per hour
  • pounds of air per hour
  • pounds of air per minute

21: Which of the following is an inorganic refrigerant?

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

22: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Classifed
  • Leak checked
  • Insulated and installed in a pipe duct (Encased)
  • Certified

23: 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

24: High pressure controls should be set no higher than

  • 10% of set point
  • 25% of set point
  • 80% of set point
  • 90% of set point

25: How are refrigerant blends classified?

  • Based on the oil used
  • Blends don't have to be classified
  • Based on worst case fractionation
  • Based on best case Fractionation