ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • commercial occupancy
  • business occupancy
  • mercantile occupancy
  • public assembly occupancy.

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

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

3: Class A refrigerants are considered

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

4: Large mercantile occupancy is

  • 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.
  • 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 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

5: The Department that certifies the transportation of refrigerant is the

  • DOT
  • RSES
  • EPO
  • EPA

6: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

7: What kind of material can't be used on the outlet of a relief valve?

  • Copper
  • PVC
  • Stainless Steel
  • Aluminum

8: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

9: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

10: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

11: Machinery rooms must be vented to ______?

  • neutralizing tank
  • unoccupied spaces
  • basement
  • outdoors

12: Doors communicating with outside from a mechanical room must be?

  • Self-closing, aligned, fire door
  • Steel, approved, weather-stripped
  • Self-closing, approved, fire door
  • Self-closing, wooden, fire door

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

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

14: When a refrigeration or air conditioning system is installed

  • the form of certificate shall be authorized by the Department of Pubic safety
  • a field inspection shall be made before it is put into service
  • it shall not be operated below prescribed pressures
  • it shall be approved by the owner for proper operation.

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

  • R-11
  • R-113
  • R-12
  • R-22

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

  • 5
  • 20
  • 15
  • 1

17: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

18: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

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

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

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

  • black iron
  • stainless steel
  • magnesium
  • copper

21: What refrigerant were phased out in 2004?

  • R-134a
  • R-12
  • R-22
  • R-11

22: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 10
  • III
  • 25
  • 15

23: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

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

  • make sure it's compatible, notify owner, notify A.H.J
  • you can't change refrigerants
  • nothing must be done
  • place sign, check for leaks, insulate

25: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 14 days
  • 2 months
  • 1 week
  • 30 days