ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-717
  • R-718
  • R-711

2: R-22 is considered a(n)

  • HCFC
  • CFC
  • HCFCH
  • HFC

3: What is an example of institutional occupancy?

  • Shopping mall
  • Hospital
  • Football stadium
  • Dorms

4: What type refrigerant is NOT ozone depleting?

  • CFC
  • HCFC
  • HFC
  • Halon

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

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

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

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

7: Ammonia belongs to Group

  • A-1
  • A-2
  • B-1
  • B-2

8: How much refrigerant can be stored in a mechanical room outside of the system?

  • 200
  • 330
  • 150
  • 100

9: How many groups of refrigerants are there?

  • 1
  • 3
  • 5
  • 7

10: Ammonia can come in contact with _______ ?

  • Brass
  • Copper tubing
  • Aluminum
  • Copper

11: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 2.2
  • 1
  • 1.2
  • 1.5

12: 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

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

  • copper
  • stainless steel
  • magnesium
  • black iron

14: How are refrigerant blends classified?

  • Based on worst case fractionation
  • Blends don't have to be classified
  • Based on the oil used
  • Based on best case Fractionation

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: 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.
  • you can never change refrigerants
  • Nothing must be done
  • Place sign, check for leaks, and insulate suction line

17: A class B1 refrigerant is considered

  • non-toxic and non-flammable
  • non-toxic but highly flammable
  • toxic but non-flammable
  • toxic and somewhat flammable

18: Most CFC's are

  • toxic
  • flammable
  • inert but toxic
  • inert

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

  • A-1
  • B-2
  • C-3
  • A-3

20: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 30 days
  • 1 week
  • 14 days
  • 2 months

21: How many gallons of water per pound of ammonia do you need?

  • 5
  • 1
  • 20
  • 15

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

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

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

  • Instituional
  • Place of assembly
  • Large mercantile
  • Industrial

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

  • 330
  • 1,000
  • 6.6
  • 110

25: What is the refrigerant dichlorodifluoromethane?

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