ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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.

2: A class B2 refrigerant is considered

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

3: Who approves containers for refrigerants?

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

4: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection and a rupture disc
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device
  • over pressure protection

5: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 660 lbs
  • 55 lbs
  • 550 lbs
  • 330 lbs.

6: 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

7: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

  • lower
  • there is no Group B1 refrigerants
  • higher
  • the same

8: 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 a non-flammable refrigerant
  • Because it's water
  • Because it's cheap

9: Halogen refrigerants are corrosive to which type of metal?

  • black iron
  • copper
  • stainless steel
  • magnesium

10: Ammonia belongs to Group

  • B-2
  • A-2
  • B-1
  • A-1

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

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

12: What type of relief valve is used on a CO2 system?

  • glove disc
  • fusible plug
  • gate valve
  • rupture disc

13: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • no flames shall be permitted
  • explosion precautions must be taken
  • gas masks must be worn
  • the owner shall be informed

14: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 1,000
  • 6.6
  • 330
  • 110

15: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 66
  • 22
  • 25
  • 50

16: What type refrigerant is NOT ozone depleting?

  • CFC
  • HFC
  • Halon
  • HCFC

17: What type of copper is not permitted on refrigeration systems?

  • Type M
  • Type L
  • Type N
  • Type K

18: What section governs pressure vessels?

  • Section 8 ASHREA 15 ASME unfired
  • Section 1 ASHREA 15 ASME fired
  • Section ASHREA 34
  • OSHA

19: 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

20: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use pressure relief devices
  • shall use rupture discs or duel pressure relief valves
  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs

21: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

  • commercial occupancy
  • public assembly occupancy
  • institutional occupancy
  • mixed occupancy

22: A restaurant is classified as a

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

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

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

24: The discharge relief valve is located (9.4.6)

  • on top of the condensor
  • between the compressor and the stop valve
  • between the compressor and reciever
  • between the compressor and oil separator

25: A High-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 an unoccupied space
  • 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