ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Ammonia (NH3) is a group III refrigerant

  • True
  • False

2: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.

3: A professional or office building would be considered what type of occupancy?

  • mercantile
  • business
  • public assembly
  • commercial

4: Liquid level gauges must be provided with what?

  • Automatic shut-offs
  • A relief valve
  • A low level mark
  • A red line

5: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 5
  • 1

6: Low temperature systems should have what?

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

7: Ammonia can come in contact with _______ ?

  • Copper tubing
  • Aluminum
  • Copper
  • Brass

8: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 10,000
  • 100
  • 1,000
  • 100,000

9: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

10: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 36
  • 18
  • 24
  • 48

11: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.

  • 110
  • 100
  • 90
  • 80

12: High pressure controls should be set no higher than

  • 25% of set point
  • 10% of set point
  • 90% of set point
  • 80% of set point

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.

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

14: What pipe can not be used for refrigeration?

  • K
  • M
  • L
  • N

15: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

16: A movie theater would be considered a

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

17: Relief valves are rated in

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

18: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 350
  • 50
  • 100
  • 550

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

  • R-22
  • R-12
  • R-113
  • R-11

20: Which occupancy can ammonia be used in?

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

21: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

22: 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
  • Notify the Fire Marshal that the system has been inspected and approved
  • There is a temporary shut-down until a final inspection can be performed.

23: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 2.5, 3.0
  • 3.0, 3.5
  • 6.6, 6.6
  • 2.5, 2.5

24: What is Trichlorotrifluoromethane?

  • R-12
  • R-13
  • R-11
  • R-113

25: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • either a fusible plug or a pressure relief device
  • a fusible plug
  • a pressure relief device