ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • high pressure
  • low pressure
  • critical pressure
  • design pressure

2: What would be the classification of a church?

  • Place of assembly
  • Institutional
  • Industrial
  • Large mercantile

3: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall have a pressure limiting device installed on the high side of the system
  • shall be inspected by the Boiler of Inspectors bi-annually
  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed

4: Fusible plugs shall not be used with pressure vessels of

  • 15 cubic feet or more
  • 3 cubic feet or more
  • 15 square feet or less
  • 3 cubic feet or less

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

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

6: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection and a rupture disc
  • over pressure protection as well as a temperature protection device

7: Who approves containers for refrigerants?

  • D.O.D
  • D.O.T
  • D.O.E
  • E.P.A

8: A relief valve shall be located at least ___ above grade.

  • 10'
  • 36'
  • 15'
  • 25'

9: 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

10: Most CFC's are

  • inert
  • flammable
  • toxic
  • inert but toxic

11: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • CO Sensing
  • A group sensing
  • phosgene gas sening
  • refrigerant sensing

12: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use rupture discs or duel pressure relief valves
  • shall use pressure relief devices
  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs

13: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

14: Halo-carbon refrigerants cannot be used with what material?

  • Stainless Steel
  • Copper
  • Magnesium alloy
  • Aluminum

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

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

16: A class B2 refrigerant is considered

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

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

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

18: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 1
  • 2
  • 5
  • 3

19: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

20: Joints in refrigeration piping must be _____ before being covered?

  • Insulated
  • Pressurized
  • Leak tested
  • Inspected

21: What is the refrigerant dichlorodifluoromethane?

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

22: What must be done if refrigeration lines pass through a concrete floor?

  • leak checked
  • insulated
  • installed through a pipe casing
  • moisture barrier

23: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusible plug
  • rupture plug
  • fusion plug
  • relief plug

24: R-410A is classified as a ____ refrigerant on the safety matrix.

  • A-1
  • B-2
  • A-2
  • B-1

25: The color code of a tank of ammonia is

  • lavender
  • light green
  • silver
  • white