ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • a fusible plug
  • 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 pressure relief device

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

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

3: Class A refrigerants are considered

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

4: 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

5: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

6: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-113
  • R-11
  • R-12

7: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class B machinery room
  • Class M machinery room
  • Class A machinery room
  • Class T machinery room

8: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

9: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

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

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

11: How many different groups of refrigerants are there?

  • 3
  • 15
  • 11
  • 7

12: What is an example of institutional occupancy?

  • Football stadium
  • Shopping mall
  • Hospital
  • Dorms

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

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

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

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

15: The gauge thickness required on a CO2 tank construction is

  • 5/16"
  • 1/8"
  • 1/16"
  • 3/32"

16: 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

17: How many refrigerant classifications are there for flammability?

  • 3
  • 7
  • 1
  • 2

18: What refrigerant is an inorganic compound?

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

19: What is the refrigerant dichlorodifluoromethane?

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

20: Ammonia belongs to Group

  • A-2
  • B-2
  • B-1
  • A-1

21: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Zinc
  • Nickel
  • Magnesium
  • Copper

22: What must be done to refrigerant pipes before being buried?

  • Certified
  • Coated
  • Leaked checked
  • Encased

23: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

24: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

25: How many gallons of water per pound of ammonia do you need?

  • 1
  • 15
  • 5
  • 20