ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 36'
  • 15'
  • 10'
  • 25'

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

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

3: A movie theater would be considered a

  • commercial occupancy
  • institutional occupancy
  • public assembly occupancy
  • mixed occupancy

4: Indirect systems using Group II refrigerants

  • shall have all refrigerant containing parts except piping, installed in a Class T machine room
  • shall be used in refrigeration system less than 1,000 lbs
  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used for mechanical equipment only

5: A professional or office building would be considered what type of occupancy?

  • commercial
  • mercantile
  • public assembly
  • business

6: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 99%
  • 75%
  • 90%
  • 80%

7: What refrigerant doesn't have to be classified?

  • R-134A
  • R-422A
  • R-718
  • R-717

8: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1
  • 1.5
  • 2.2
  • 1.2

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

  • Stainless Steel
  • Aluminum
  • Copper
  • Magnesium alloy

10: 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

11: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 50
  • 22
  • 33
  • 18

12: Name three things that must be done when changing refrigeration lubricant?

  • Make sure it's compatible, notify owner, notify AHJ
  • Place sign, check for leaks, insulate
  • Nothing must be done
  • You can't change lubricants.

13: A declaration test is needed when the system contains more than

  • 55 lbs
  • 65 lbs
  • 110 lbs
  • 120 lbs

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

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

15: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • Machinery rooms need not be vented
  • the outdoors
  • the return air ducted system
  • the mechanical room housing the refrigeration system

16: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • bi-annually
  • regularly
  • quarterly
  • annually

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

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

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

  • B-1
  • B-2
  • A-1
  • A-2

19: 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

20: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the low side
  • the aggregate of the high side and low side
  • 2.5 times the design pressure
  • the high side

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

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

22: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

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

  • Insulated
  • Leak tested
  • Pressurized
  • Inspected

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

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

25: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above