ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A relief valve discharge capacity is rated in

  • Pounds of air per minute.
  • PSIA
  • temperature minus pounds of air per second divided by release rate squared
  • PSIG

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

  • Copper
  • Aluminum
  • PVC
  • Stainless Steel

3: How many refrigerant classifications are there for toxicity?

  • 2
  • 3
  • 5
  • 1

4: Each machinery room shall contain

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

5: Can ammonia be used on domestic system?

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

6: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

7: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

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

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

9: 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
  • Place sign, check for leaks, and insulate suction line
  • Nothing must be done

10: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Certified
  • Leak checked
  • Insulated and installed in a pipe duct (Encased)
  • Classifed

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

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

12: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • competent welder
  • welder qualified
  • licensed technician
  • licensed welder

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

  • 20
  • 1
  • 15
  • 5

14: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 700F
  • 600F
  • 800F
  • 1000F

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

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

16: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 50
  • 55
  • 15
  • 75

17: 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

18: All serviceable components of a refrigeration system shall be provided with

  • service manuals
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • safe access
  • manufactures instructions on start-up procedures

19: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

20: All electrical work done on refrigeration systems must comply with

  • ASHREA-15 Section 9.2.1
  • NEC and Massachusetts Modifications
  • Department of Energy
  • OSHA

21: 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.

  • 100
  • 350
  • 50
  • 550

22: What pipe can not be used for refrigeration?

  • K
  • L
  • N
  • M

23: Which refrigerant class listed below is the most flammable?

  • B-2
  • A-3
  • A-1
  • C-3

24: A Low-Probability System

  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is such that a leak of refrigerant from a failed connection can not enter the occupied space
  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is a system highly likely to leak form a failed connection or component of such system

25: A movie theater would be considered a

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