ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How much clearance do you need around the perimeter of electrical panels?

  • 12"
  • 36"
  • 24"
  • 18"

2: 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

3: 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)

  • illegal occupancy
  • public assembly occupancy
  • institutional occupancy
  • commercial occupancy

4: The Department that certifies the transportation of refrigerant is the

  • EPA
  • EPO
  • DOT
  • RSES

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
  • competent welder
  • welder qualified
  • licensed welder

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

  • True
  • False

7: A restaurant is classified as a

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

8: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

9: What type refrigerant is NOT ozone depleting?

  • CFC
  • HCFC
  • HFC
  • Halon

10: 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.

  • 100
  • 50
  • 350
  • 550

11: How are refrigerant blends classified?

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

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

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

13: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

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

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

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

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

16: A Low-Probability System

  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • 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

17: B3 refrigerants are considered

  • toxic and highly flammable
  • non-toxic but flammable
  • non-toxic but non-flammable
  • toxic but non-flammable

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

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

19: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • high side of the system
  • the liquid side of the system
  • the vapor side of the system
  • low side of the system

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

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

21: Relief valves are rated in

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

22: How many refrigerant classifications are there for flammability?

  • 1
  • 3
  • 7
  • 2

23: Pressure relief valves shall be marked with the data from

  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code

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

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

25: R-22 is considered a(n)

  • HCFC
  • HFC
  • HCFCH
  • CFC