ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 5.5
  • 2.0
  • 2.5
  • 3.0

2: 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

3: What section governs pressure vessels?

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

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

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

5: What is an egress?

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

6: 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

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

  • regularly
  • annually
  • quarterly
  • bi-annually

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

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

9: 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.

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

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

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

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

12: Ammonia is under what safety classification?

  • B3
  • A3
  • B1
  • B2

13: 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

14: Refrigerants shall be classified by

  • maximum permissible quantities of each group
  • color codes
  • requirements for commercial, industrial, and residential occupancies
  • toxicity and flammability

15: R-22 falls under which safety classification?

  • A-2
  • B-2
  • A-1
  • B-1

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

  • True
  • False

17: What would be the classification for Stop & Shop grocery store?

  • Large mercantile
  • Industrial
  • Place of assembly
  • Instituional

18: The gauge thickness required on a CO2 tank construction is

  • 1/16"
  • 1/8"
  • 3/32"
  • 5/16"

19: Liquid level gauges must be provided with what?

  • A relief valve
  • A low level mark
  • Automatic shut-offs
  • A red line

20: What section of ASHRAE-15 governs pressure vessels?

  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • OSHA

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

  • Pressurized
  • Leak tested
  • Inspected
  • Insulated

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

  • magnesium
  • black iron
  • copper
  • stainless steel

23: R-22 is considered a(n)

  • HFC
  • CFC
  • HCFC
  • HCFCH

24: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • shall not be prohibited
  • shall be prohibited
  • of Group B2 refrigerant shall be prohibited

25: The Department that certifies the transportation of refrigerant is the

  • RSES
  • DOT
  • EPA
  • EPO