ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

2: What does safe access mean?

  • A clear unobstructed path to the equipment and controls
  • OSHA approved
  • Well-lit exit signs
  • Locked doors

3: Most CFC's are

  • flammable
  • inert but toxic
  • toxic
  • inert

4: 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

5: A hotel is considered a _______ occupancy.

  • mercantile
  • institutional
  • residential
  • commercial

6: A High-Probability System

  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is a system highly likely to leak form a failed connection or component of such system
  • is such that a leak of refrigerant from a failed connection will enter an unoccupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area

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

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

8: A relief valve shall be located at least ___ above grade.

  • 10'
  • 25'
  • 36'
  • 15'

9: What pipe can not be used for refrigeration?

  • K
  • L
  • M
  • N

10: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Zinc
  • Copper
  • Nickel
  • Magnesium

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

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

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

  • 75%
  • 80%
  • 100%
  • 90%

13: How much clearance do you need around the perimeter of electrical panels?

  • 24"
  • 18"
  • 36"
  • 12"

14: Class 3 refrigerants are

  • non-toxic
  • toxic
  • non-flammable
  • highly flammable

15: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

16: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • no flames shall be permitted
  • explosion precautions must be taken
  • gas masks must be worn
  • the owner shall be informed

17: What is the refrigerant dichlorodifluoromethane?

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

18: High pressure controls should be set no higher than

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

19: What is the intention of the word “shall” as used in the code?

  • A mandatory requirement
  • A recommendation or advisory guideline
  • A technician’s choice of how it should be done
  • None of the above

20: 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

21: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • Make sure its compatible, notify owner, and notify AHJ.
  • Nothing must be done
  • you can never change refrigerants
  • Place sign, check for leaks, and insulate suction line

22: R-22 is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-1
  • B-2
  • A-2

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

  • 700F
  • 1000F
  • 600F
  • 800F

24: What section of ASHRAE-15 governs pressure vessels?

  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • Section 9 ASHRAE-15 ASME VIII unfired
  • OSHA

25: What refrigerant is an inorganic compound?

  • R-132A
  • R-22
  • R-410A
  • Ammonia