ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The discharge relief valve is located (9.4.6)

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

2: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

3: 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

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

  • 330
  • 100
  • 150
  • 200

5: Pipe identification labels are required when the system contains more than

  • 110 lbs
  • 120 lbs
  • 55 lbs
  • 65 lbs

6: A relief valve discharge capacity is rated in

  • Pounds of air per minute.
  • temperature minus pounds of air per second divided by release rate squared
  • PSIA
  • PSIG

7: What type refrigerant is NOT ozone depleting?

  • HCFC
  • CFC
  • HFC
  • Halon

8: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

9: What is the refrigerant chlorodifluoromethane?

  • R-123
  • R-12
  • R-134a
  • R-22

10: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

11: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

12: R-123 belongs to Group

  • B-1
  • A-3
  • B-2
  • B-3

13: Where are the three places that the discharge from an ammonia relief valve be piped?

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

14: The gauge thickness required on a CO2 tank construction is

  • 5/16"
  • 3/32"
  • 1/16"
  • 1/8"

15: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-11
  • R-113
  • R-22
  • R-12

16: NH3 is

  • lithium bromide
  • R-508A
  • R-718
  • ammonia

17: 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.

18: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • the outdoors
  • Machinery rooms need not be vented
  • the return air ducted system
  • the mechanical room housing the refrigeration system

19: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c

20: How many gallons of water do you need per pound of ammonia?

  • 10
  • 100
  • 50
  • 1

21: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

22: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1.2
  • 1.5
  • 2.2
  • 1

23: When an inspection is needed, how often must it be done?

  • annually
  • every 24 months
  • every 36 months
  • every 18 months

24: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When its white
  • When there are sprinklers above
  • When it's used as part of a supply or return air system
  • When there is a space 6' or more above it

25: The color code of a tank of ammonia is

  • lavender
  • silver
  • white
  • light green