ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

2: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

3: What refrigerant doesn't have to be classifted?

  • R-717
  • R-711
  • R-718
  • R-134a

4: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 3.0
  • 2.5
  • 5.5
  • 2.0

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

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

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

  • Stainless Steel
  • Aluminum
  • Copper
  • PVC

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

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

8: There can be no airflow from an occupied space through a machine room unless what?

  • System is high velocity
  • System is ducted and sealed
  • Duct is not located in the ceiling
  • None of the above.

9: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

10: Class 3 refrigerants are

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

11: A class A3 refrigerant is considered

  • non-toxic and non-flammable
  • toxic and non-flammable
  • toxic and somewhat flammable
  • non-toxic but highly flammable

12: Ammonia (NH3) is a group III refrigerant

  • True
  • False

13: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

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

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

15: A High-Probability System

  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • 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 will enter an unoccupied space
  • is a system highly likely to leak form a failed connection or component of such system

16: What section governs pressure vessels?

  • Section 8 ASHREA 15 ASME unfired
  • Section 1 ASHREA 15 ASME fired
  • OSHA
  • Section ASHREA 34

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

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

18: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 48
  • 18
  • 36
  • 24

19: 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.

  • 550
  • 50
  • 100
  • 350

20: Relief valves are rated in

  • gallons of water per hour
  • pounds of air per minute
  • gallons of water per minute
  • pounds of air per hour

21: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

22: How many refrigerant classifications are there for flammability?

  • 1
  • 2
  • 3
  • 7

23: _____ and its alloys are suitable for use with ammonia systems.

  • Copper
  • Aluminum
  • Zinc
  • Magnesium

24: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed
  • shall be inspected by the Boiler of Inspectors bi-annually
  • shall have a pressure limiting device installed on the high side of the system

25: How many different groups of refrigerants are there?

  • 3
  • 7
  • 11
  • 15