ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What type of pressure relief device is used on a CO2 system?

  • Gate valve
  • Fusible plug
  • Rupture disk
  • Glove valve

2: A movie theater would be considered a

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

3: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

4: 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.

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

5: What is the refrigerant dichlorodifluoromethane?

  • R-134A
  • R-22
  • R-123
  • R-12

6: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

7: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

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

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

9: Doors communicating with outside from a mechanical room must be?

  • Self-closing, aligned, fire door
  • Self-closing, approved, fire door
  • Self-closing, wooden, fire door
  • Steel, approved, weather-stripped

10: 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

11: How far from the ground does a relief valve need to be?

  • At least 20' above grade
  • Not more than 3' above grade
  • At least 15' above grade
  • At least 25' above grade

12: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • a fusible plug
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • either a fusible plug or a pressure relief device
  • a pressure relief device

13: Ammonia belongs to Group

  • A-1
  • B-1
  • A-2
  • B-2

14: What would be the classification of a prison?

  • Industrial
  • Large mercantile
  • Place of assembly
  • Institutional

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

  • bleed valve
  • condenser
  • service valve
  • relief valve

16: When an inspection is needed, how often must it be done?

  • every 24 months
  • annually
  • every 18 months
  • every 36 months

17: How many groups of refrigerants are there?

  • 7
  • 5
  • 1
  • 3

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

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

19: 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.

  • 55
  • 50
  • 15
  • 75

20: 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

21: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

22: 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

23: 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

24: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

25: Ammonia can come in contact with _______ ?

  • Copper tubing
  • Brass
  • Aluminum
  • Copper