ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A pressure relief should be located at least _______ from windows and doors.

  • 25'
  • 15'
  • 30'
  • 20'

2: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 1 week
  • 2 months
  • 14 days
  • 30 days

3: When should a relief valve start to function?

  • Two times it's working pressure
  • At it's set pressure
  • 10 psi before it's set pressure
  • Before the purge station discharges

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

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

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

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

6: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

7: Stop valves shall not be permitted between the system and the

  • bleed valve
  • relief valve
  • condenser
  • service valve

8: 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
  • There is a temporary shut-down until a final inspection can be performed.
  • Notify the Fire Marshal that the system has been inspected and approved

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

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

10: Each machinery room shall contain

  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • high and low pressure controls
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

11: What type refrigerant is NOT ozone depleting?

  • HCFC
  • HFC
  • CFC
  • Halon

12: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

13: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 18
  • 22
  • 50
  • 33

14: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “U” or “UM”
  • “UM” and “UV”
  • “UV”
  • “UL”

15: 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

  • competent welder
  • welder qualified
  • licensed welder
  • licensed technician

16: An example of direct system is

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

17: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

18: Machinery rooms must be vented to ______?

  • unoccupied spaces
  • neutralizing tank
  • basement
  • outdoors

19: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 250
  • 100
  • 350
  • 400

20: Low temperature systems should have what?

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

21: Single compound Refrigerants are classified by what two criteria?

  • Weight and color
  • Flammability and toxicity
  • Temperature range and hazardousness
  • Flammability and temperature range

22: 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

23: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UL and UM
  • UV or UR
  • UM or UL
  • UL and UR

24: What is a Category "D" fluid?

  • A typical refrigerant used on newer air conditioning and heat pump ssytems
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
  • Any fluid that exceeds 150 psig and has design temperature of over 366F
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F

25: Ammonia can come in contact with _______ ?

  • Copper tubing
  • Copper
  • Aluminum
  • Brass