ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 700F
  • 1000F
  • 600F
  • 800F

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

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

3: 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)

  • public assembly occupancy
  • illegal occupancy
  • institutional occupancy
  • commercial occupancy

4: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 25
  • 10
  • 20
  • 15

5: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 660 lbs
  • 330 lbs.
  • 55 lbs
  • 550 lbs

6: What pipe can not be used for refrigeration?

  • K
  • M
  • N
  • L

7: 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.

  • 6.6, 6.6
  • 2.5, 3.0
  • 2.5, 2.5
  • 3.0, 3.5

8: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

9: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

10: What is an example of institutional occupancy?

  • Dorms
  • Hospital
  • Shopping mall
  • Football stadium

11: Each machinery room shall contain

  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • a toxicity detector where the presence of ammonia or lithium bromide 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
  • high and low pressure controls

12: Fusible plugs must have what marked on them?

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

13: Who authorizes changes to the safety codes?

  • Contractor who last serviced the system.
  • Person in charge of the facility
  • Person who pulled the permit
  • Board of Boilers

14: What must be done if refrigeration lines pass through a concrete floor?

  • insulated
  • installed through a pipe casing
  • moisture barrier
  • leak checked

15: What type of relief valve is used on a CO2 system?

  • fusible plug
  • rupture disc
  • glove disc
  • gate valve

16: Can you use Ammonia in industrial applications?

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

17: What is Trichlorotrifluoromethane?

  • R-113
  • R-13
  • R-11
  • R-12

18: A High-Probablity system

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

19: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 2.0
  • 3.0
  • 5.5
  • 2.5

20: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

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

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

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

22: A professional or office building would be considered what type of occupancy?

  • commercial
  • mercantile
  • business
  • public assembly

23: All machine rooms must be outfitted with a detector that _______?

  • activates an audible alarm
  • activates a visual alarm
  • starts the ventilation system
  • All of the above

24: An example of direct system is

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

25: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b