ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: The certificate of inspection

  • shall be posted and protected from dirt, water, and other elements
  • shall be authorized by a notarized insurance company
  • shall be posted on the compressor shell or electrical panel at the unit
  • shall be $20 and an additional fee of $1 for each tone above 20 tons

2: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • CFC-11
  • ammonia
  • Lithium bromide
  • HCFC-123

3: R-22 is considered a(n)

  • CFC
  • HCFCH
  • HFC
  • HCFC

4: Can ammonia be used on domestic system?

  • yes
  • no, unless there is proper ventilation system installed
  • yes, for systems under 10 tons
  • no

5: Where a refrigeration or air conditioning system is installed,

  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers
  • A field inspection shall be made before it is put into service
  • the form or certificate shall be authorized by the Department of Public Safety

6: 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

7: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

  • higher
  • the same
  • there is no Group B1 refrigerants
  • lower

8: A hotel is considered a _______ occupancy.

  • residential
  • mercantile
  • commercial
  • institutional

9: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

10: Each machinery room shall contain

  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • high and low pressure controls
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

11: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UL and UM
  • UM or UL
  • UV or UR
  • UL and UR

12: What is the minimum height refrigeration piping should be placed against walls?

  • 6'
  • 7.25'
  • Ceiling height
  • 72"

13: 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.

14: 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

15: How far from the window does a relief valve need to be according to ASHRAE-15?

  • At least 20'
  • At least 40'
  • There is no minimum for relief valve and windows.
  • At least 30'

16: What is an egress?

  • A code violation
  • A valve put on the low side of the system to prevent frosting
  • An escape route
  • An entrance or exit

17: What type refrigerant is NOT ozone depleting?

  • HFC
  • CFC
  • Halon
  • HCFC

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

  • Stainless Steel
  • PVC
  • Copper
  • Aluminum

19: How many CFMs are required per square foot of commercial office occupied space

  • 15 CFM
  • 20 CFM
  • .5 CFM
  • 5 CFM

20: What type of copper is not permitted on refrigeration systems?

  • Type M
  • Type L
  • Type N
  • Type K

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

  • magnesium
  • stainless steel
  • black iron
  • copper

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

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

23: Direct systems using Group II refrigerants

  • shall not be used for air condition for human comfort
  • shall be installed in Class T machinery rooms
  • shall be installed per instruction of the AHJ
  • shall be allowed to be used for human comfort.

24: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

  • public assembly occupancy
  • illegal occupancy
  • commercial occupancy
  • institutional occupancy

25: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above