ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

2: 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

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

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

4: What is not a requirement of a class T machine room?

  • automatic ventilation
  • self-closing doors
  • fire hose connection to the building fire protection system
  • tight fitting doors

5: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 75%
  • 100%
  • 90%
  • 80%

6: Ammonia can come in contact with _______ ?

  • Copper
  • Aluminum
  • Brass
  • Copper tubing

7: The color code of a tank of ammonia is

  • lavender
  • white
  • light green
  • silver

8: Machinery rooms must be vented to ______?

  • outdoors
  • neutralizing tank
  • basement
  • unoccupied spaces

9: What section governs pressure vessels?

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

10: 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

11: 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

12: High pressure controls should be set no higher than

  • 80% of set point
  • 10% of set point
  • 25% of set point
  • 90% of set point

13: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • compressor
  • boiler
  • evaporator
  • outside the machinery room

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

  • Stainless Steel
  • Aluminum
  • Copper
  • PVC

15: 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

16: Ammonia (NH3) is a group III refrigerant

  • True
  • False

17: Where a refrigeration or air conditioning system is installed,

  • A field inspection shall be made before it is put into service
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers
  • the form or certificate shall be authorized by the Department of Public Safety

18: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 90%
  • 80%
  • 99%
  • 75%

19: Can you use Ammonia in industrial applications?

  • When mixed with R-718
  • Yes, Under certain condidtions
  • No, never
  • Yes, always

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

  • Inspected
  • Pressurized
  • Insulated
  • Leak tested

21: 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
  • 75
  • 15

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

  • 1,000
  • 110
  • 330
  • 6.6

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

  • True
  • False

25: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 10
  • 24
  • 15
  • 18