ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • III
  • 15
  • 25
  • 10

2: 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.

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

  • Certified
  • Leaked checked
  • Encased
  • Coated

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 vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection and a rupture disc
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection
  • over pressure protection as well as a temperature protection device

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

  • Industrial
  • Instituional
  • Place of assembly
  • Large mercantile

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

  • 1,000
  • 110
  • 330
  • 6.6

8: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 75%
  • 100%
  • 90%
  • 80%

9: Pressure vessels with an internal volume of 3 cubic feet or less

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

10: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • the vapor side of the system
  • high side of the system
  • the liquid side of the system
  • low side of the system

11: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

12: What must be done if refrigeration lines pass through a concrete floor?

  • moisture barrier
  • leak checked
  • insulated
  • installed through a pipe casing

13: R-717 is

  • carbon dioxide
  • water
  • ammonia
  • trichloromethane

14: What pipe can not be used for refrigeration?

  • N
  • L
  • K
  • M

15: 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
  • 6.6, 6.6
  • 3.0, 3.5
  • 2.5, 2.5

16: A declaration test is needed when the system contains more than

  • 120 lbs
  • 110 lbs
  • 65 lbs
  • 55 lbs

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

  • aluminum
  • zinc
  • magnesium
  • all of the above

19: Each machinery room shall contain

  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
  • high and low pressure controls
  • 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

20: A hotel is considered a _______ occupancy.

  • mercantile
  • commercial
  • residential
  • institutional

21: How many flammability classifications are refrigerants in?

  • 7
  • 5
  • 3
  • 2

22: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 7.25'
  • 8'4"
  • 9.00'
  • 7.00'

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

  • copper
  • magnesium
  • black iron
  • stainless steel

24: Who authorizes changes to the safety codes?

  • Person who pulled the permit
  • Board of Boilers
  • Person in charge of the facility
  • Contractor who last serviced the system.

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

  • B-2
  • A-1
  • A-3
  • C-3