ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

  • compressor
  • outside the machinery room
  • boiler
  • evaporator

2: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

3: A relief valve discharge capacity is rated in

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

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

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

5: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • public assembly occupancy.
  • business occupancy
  • mercantile occupancy
  • commercial occupancy

6: No open flames are allowed in the machinery room unless?

  • Only when combustion air is provided from outside of the machinery room
  • Approved by the installing contractor
  • Approved by the authorized person
  • Never can be allowed

7: Machinery rooms must be vented to ______?

  • unoccupied spaces
  • neutralizing tank
  • outdoors
  • basement

8: 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

9: Pressure vessels with an internal volume of 3 cubic feet or less

  • shall use fusible plugs
  • shall use pressure relief devices
  • do not need pressure relief protection
  • shall use pressure relief devices or fusible plugs

10: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

11: Relief valves are rated in

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

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

  • Instituional
  • Large mercantile
  • Industrial
  • Place of assembly

13: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that a leak of refrigerant from failed connections 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 from a failed connection or component of such system

14: 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

15: Who authorizes changes to the safety codes?

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

16: A class B2 refrigerant is considered

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

17: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 80%
  • 90%
  • 100%
  • 75%

18: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

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

  • 2.2
  • 1.2
  • 1
  • 1.5

20: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

21: What section governs pressure vessels?

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

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

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

23: When a refrigeration or air conditioning system is installed

  • 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
  • it shall be approved by the owner for proper operation.

24: Indirect systems using Group II refrigerants

  • 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
  • shall be used in refrigeration system in excess of 1,000 lbs

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

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