ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

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

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

3: How are refrigerant blends classified?

  • Based on best case Fractionation
  • Based on the oil used
  • Blends don't have to be classified
  • Based on worst case fractionation

4: When a refrigeration or air conditioning system is installed

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

5: 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

6: 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

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

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

8: Which refrigerant replaced R-12?

  • R-134A
  • R-22
  • R-407A
  • R-410A

9: Can you use Ammonia in industrial applications?

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

10: What type of pressure relief device is used on a CO2 system?

  • Rupture disk
  • Fusible plug
  • Gate valve
  • Glove valve

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

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

12: Which occupancy can ammonia be used in?

  • depends on the quantity of freon
  • redifential
  • commercial
  • industrial

13: Pressure vessels with an internal volume of 3 cubic feet or more

  • shall use pressure relief devices or fusible plugs
  • do not need pressure relief protection
  • shall use pressure relief devices
  • shall use fusible plugs

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

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

15: What is an egress?

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

16: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

17: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 2.5, 3.0
  • 3.0, 3.5
  • 2.5, 2.5
  • 6.6, 6.6

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

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

19: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

20: A restaurant is classified as a

  • mixed occupancy
  • commercial occupancy
  • public assembly occupancy
  • large mercantile occupancy

21: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Foot valve
  • Stop valve
  • Muffler
  • Moisture indicator

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

  • 50
  • 25
  • 66
  • 22

23: Pressure relief valves shall be marked with the data from

  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code

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

  • Encased
  • Coated
  • Leaked checked
  • Certified

25: 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
  • either a fusible plug or a pressure relief device
  • a pressure relief device
  • a fusible plug