ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

2: What refrigerant is an inorganic compound?

  • R-132A
  • R-22
  • R-410A
  • Ammonia

3: 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
  • 550
  • 100

4: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

5: 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

6: What pipe can not be used for refrigeration?

  • N
  • K
  • L
  • M

7: 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

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

8: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

9: The color code of a tank of ammonia is

  • lavender
  • silver
  • light green
  • white

10: How far from the ground does a relief valve need to be?

  • At least 25' above grade
  • Not more than 3' above grade
  • At least 20' above grade
  • At least 15' above grade

11: What is the refrigerant dichlorodifluoromethane?

  • R-123
  • R-12
  • R-134A
  • R-22

12: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

13: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

  • the same
  • there is no Group B1 refrigerants
  • lower
  • higher

14: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

15: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • Place sign, check for leaks, and insulate suction line
  • Make sure its compatible, notify owner, and notify AHJ.
  • you can never change refrigerants
  • Nothing must be done

16: Halogen refrigerants are corrosive to which type of metal?

  • copper
  • black iron
  • stainless steel
  • magnesium

17: How many different groups of refrigerants are there?

  • 7
  • 15
  • 3
  • 11

18: Dual-pressure relief devices should be installed on

  • vessels of 3 cubic feet or more
  • vessels of 10 cubic feet or more
  • vessels of 3 cubic feet or less
  • vessels of 10 cubic feet or less

19: NH3 is

  • ammonia
  • R-508A
  • lithium bromide
  • R-718

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

  • Place of assembly
  • Large mercantile
  • Industrial
  • Instituional

21: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

22: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

23: R-22 falls under which safety classification?

  • A-2
  • A-1
  • B-1
  • B-2

24: When air is ducted through a machine room that services occupied space, What must be done?

  • Flanged and gasketed
  • Ducted and sealed
  • Welded and seamed.
  • Insulated and cross broke

25: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above