ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Class 3 refrigerants are

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

2: 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

3: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 24
  • 15
  • 10
  • 18

4: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • annually
  • regularly
  • bi-annually
  • quarterly

5: Name three things that must be done when changing refrigeration lubricant?

  • Make sure it's compatible, notify owner, notify AHJ
  • Place sign, check for leaks, insulate
  • You can't change lubricants.
  • Nothing must be done

6: Fusible plugs must have what marked on them?

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

7: Who authorizes changes to the safety codes?

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

8: 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 the occupied space
  • 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 will enter an unoccupied space

9: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used in refrigeration system less than 1,000 lbs
  • shall be used for mechanical equipment only
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room

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

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

11: When a refrigeration or air conditioning system is installed

  • it shall be approved by the owner for proper operation.
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall not be operated below prescribed pressures
  • a field inspection shall be made before it is put into service

12: 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

13: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • HCFC-123
  • CFC-11
  • ammonia
  • Lithium bromide

14: What type refrigerant is NOT ozone depleting?

  • HCFC
  • HFC
  • Halon
  • CFC

15: A restaurant is classified as a

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

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

  • 50
  • 25
  • 66
  • 22

17: Trichlorofluoromethane is the name of what refrigerant?

  • R-12
  • R-502
  • R-113
  • R-11

18: What do you need to do when you install a new system?

  • Document the superheat and subcooling reading
  • Add refrigerant
  • Insulate the suction line before you take a superheat reading
  • Have it inspected

19: How many flammability classifications are refrigerants in?

  • 3
  • 5
  • 7
  • 2

20: What pipe can not be used for refrigeration?

  • L
  • M
  • K
  • N

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

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

22: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • boiler
  • evaporator
  • compressor
  • outside the machinery room

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

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

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

  • 1
  • 50
  • 10
  • 100

25: Who approves containers for refrigerants?

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