ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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.

2: What is a Category "M" fluid?

  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • A typical refrigerant used on newer air conditioning and heat pump systems
  • Any fluid that exceeds 150 psig and has design temperatures over 366F

3: A class B2 refrigerant is considered

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

4: 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

5: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 15
  • 20
  • 25
  • 10

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

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

7: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 15
  • 25
  • III
  • 10

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

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

9: Stop valves shall not be permitted between the system and the

  • bleed valve
  • relief valve
  • service valve
  • condenser

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

  • 1000F
  • 600F
  • 700F
  • 800F

11: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

12: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • critical pressure
  • design pressure
  • low pressure
  • high pressure

13: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UM” and “UV”
  • “UL”
  • “UV”
  • “U” or “UM”

14: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 6.6
  • 110
  • 1,000
  • 330

15: What would be the classification of a church?

  • Industrial
  • Place of assembly
  • Institutional
  • Large mercantile

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

  • Insulated
  • Leak tested
  • Pressurized
  • Inspected

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

  • True
  • False

18: 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

19: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 15
  • 20
  • 50
  • 75

20: 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)

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

21: A relief valve discharge capacity is rated in

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

22: 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

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

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

24: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusion plug
  • fusible plug
  • relief plug
  • rupture plug

25: 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 will enter the occupied space
  • is such that a leak of refrigerant from a failed connection can not enter the occupied space
  • is a system highly likely to leak form a failed connection or component of such system