ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What type of copper is not permitted on refrigeration systems?

  • Type K
  • Type M
  • Type N
  • Type L

2: Who is permitted to access a refrigeration machine room?

  • Authorized persons only
  • Any employee
  • Anyone, it's a completely safe area
  • Contractors only

3: B3 refrigerants are considered

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

4: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

  • higher
  • the same
  • there is no Group B1 refrigerants
  • lower

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

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

6: What refrigerant doesn't have to be classified?

  • R-718
  • R-422A
  • R-717
  • R-134A

7: A High-Probablity system

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

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

  • Insulated
  • Leak tested
  • Inspected
  • Pressurized

9: 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
  • 15
  • 75
  • 50

10: What is an egress?

  • A valve put on the low side of the system to prevent frosting
  • An escape route
  • A code violation
  • An entrance or exit

11: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

12: A declaration test is needed when the system contains more than

  • 65 lbs
  • 55 lbs
  • 110 lbs
  • 120 lbs

13: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 10,000
  • 1,000
  • 100
  • 100,000

14: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

15: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 22
  • 66
  • 50
  • 25

16: Large mercantile occupancy is

  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise

17: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

18: What refrigerant were phased out in 2004?

  • R-134a
  • R-12
  • R-22
  • R-11

19: NH3 is

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

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

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

21: An example of direct system is

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

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

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

23: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection as well as a temperature protection device
  • over pressure protection
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection and a rupture disc

24: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

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

25: A class A3 refrigerant is considered

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