ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 500 lbs
  • 660 lbs
  • 55 lbs
  • 330 lbs

2: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When it's used as part of a supply or return air system
  • When its white
  • When there is a space 6' or more above it
  • When there are sprinklers above

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

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

4: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

5: What do you need to do when you install a new system?

  • Have it inspected
  • Document the superheat and subcooling reading
  • Insulate the suction line before you take a superheat reading
  • Add refrigerant

6: Class A refrigerants are considered

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

7: The Board of Boilers adopts by reference

  • Montreal Protocol Safety Code
  • the MACS Pressure Vessel Code of Massachusetts
  • the 1997 ANSI/ASHRAE Safety Code
  • MSCA Code

8: 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

9: Who authorizes changes to the safety codes?

  • Person who pulled the permit
  • Person in charge of the facility
  • Board of Boilers
  • Contractor who last serviced the system.

10: Large mercantile occupancy is

  • 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 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 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.

11: Where must a refrigeration contractor's license number be displayed?

  • Trucks, invoices, and advertising
  • Uniforms, checks, and invoices.
  • Trucks, license plates, and uniforms
  • Truck, office, every job, and on all equipment

12: Can you use Ammonia in industrial applications?

  • Yes, Under certain condidtions
  • No, never
  • When mixed with R-718
  • Yes, always

13: 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
  • a pressure relief device
  • either a fusible plug or a pressure relief device
  • a fusible plug

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

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

15: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

16: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • of Group B2 refrigerant shall be prohibited
  • shall be prohibited
  • shall not be prohibited

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

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

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

  • Instituional
  • Place of assembly
  • Industrial
  • Large mercantile

19: What refrigerant is an inorganic compound?

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

20: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

21: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

22: 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.

  • 50
  • 100
  • 350
  • 550

23: Halogenated refrigerants cannot be used with what material?

  • Aluminum
  • Copper
  • Stainless steel
  • Magnesium alloy

24: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 6.6 lbs
  • 22 lbs
  • 13.9 lbs
  • 44 lbs

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

  • 66
  • 22
  • 25
  • 50