ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Which occupancy can ammonia be used in?

  • industrial
  • depends on the quantity of freon
  • commercial
  • redifential

2: Refrigerant restricted in 2004 but used for transition for decades:

  • R-134A
  • R-22
  • R-123
  • R-11

3: A Low-Probability System

  • 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
  • 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

4: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-717
  • R-711
  • R-718

5: 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
  • evaporator
  • boiler
  • outside the machinery room

6: What happens after your initial inspection of a pressure vessel?

  • Inspector leaves a metal tag with a certification listed on it
  • Notify the Fire Marshal that the system has been inspected and approved
  • 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.

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

  • 100%
  • 80%
  • 75%
  • 90%

8: When must refrigeration system covered by the code be inspected?

  • Upon installation
  • Not required
  • Annually
  • Annually and when installed

9: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 2.5
  • 3.0
  • 2.0
  • 5.5

10: 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

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

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

12: A High-Probability System

  • 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 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

13: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above

14: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

15: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?

  • Temperature limiter device
  • Relief valve
  • Circuit Breaker
  • T&P device

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

  • 50
  • 66
  • 22
  • 25

17: Low temperature systems should have what?

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

18: All machine rooms must be outfitted with a detector that _______?

  • activates an audible alarm
  • activates a visual alarm
  • starts the ventilation system
  • All of the above

19: When a refrigeration or air conditioning system is installed

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

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

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

21: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

22: Class 3 refrigerants are

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

23: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 75
  • 50
  • 15
  • 20

24: What type refrigerant is NOT ozone depleting?

  • HCFC
  • CFC
  • HFC
  • Halon

25: 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.

  • 350
  • 400
  • 250
  • 100