ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 100%
  • 80%
  • 75%
  • 90%

2: What is an example of institutional occupancy?

  • Football stadium
  • Shopping mall
  • Dorms
  • Hospital

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

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

4: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • R-718 is not rated unlimited because it's a dangerous refrigerant
  • Because it's cheap
  • Because it's a non-flammable refrigerant
  • Because it's water

5: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When there is a space 6' or more above it
  • When its white
  • When it's used as part of a supply or return air system
  • When there are sprinklers above

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

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

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

  • bleed valve
  • relief valve
  • condenser
  • service valve

8: What would be the classification of a church?

  • Institutional
  • Industrial
  • Place of assembly
  • Large mercantile

9: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • 2.5 times the design pressure
  • the aggregate of the high side and low side
  • the low side
  • the high side

10: Class T machine room

  • shall include closets used for setting equipment
  • shall have refrigerant leak detecting systems installed inside and outside the room
  • shall have remote controls to stop the action of the refrigerant compressor
  • has no flame producing apparatus permanently installed

11: What is not a requirement of a Class T machine room?

  • Self-closing doors
  • Fire hose connected to the building fire protection system.
  • Automatic ventilation
  • Tight fitting doors

12: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

13: 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
  • public assembly occupancy
  • illegal occupancy
  • institutional occupancy

14: Which refrigerant replaced R-12?

  • R-410A
  • R-407A
  • R-22
  • R-134A

15: NH3 is

  • R-508A
  • ammonia
  • lithium bromide
  • R-718

16: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 18
  • 22
  • 50
  • 33

17: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-12
  • R-11
  • R-113

18: 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

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

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

20: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Certified
  • Leak checked
  • Classifed
  • Insulated and installed in a pipe duct (Encased)

21: Which of the following is an inorganic refrigerant?

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

22: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

23: 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
  • 3.0, 3.5
  • 6.6, 6.6
  • 2.5, 2.5

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

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

25: High pressure controls should be set no higher than

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