Oxyfuel Cutting

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  1. To prevent fume hazards, there must be at least ________ cubic feet of air for each welder.

    A) 4000
    B) 5,000
    C) 2,000
    D) 10,000
    D) 10,000
    (this multiple choice question has been scrambled)
  2. A good safety practice is _______.

    A) to use cardboard to deflect welding/ grinding sparks away from others
    B) writing HOT on hot metal before leaving it unattended
    C) welding over wooden floors
    D) welding near an open window
    B) writing HOT on hot metal before leaving it unattended
    (this multiple choice question has been scrambled)
  3. Cutting operations should never be performed without a _____ in the area.

    A) bucket of water
    B) bucket of sand
    C) fire hose
    D) fire watch
    D) fire watch
    (this multiple choice question has been scrambled)
  4. When pure oxygen is combined with fueled gases, the pure oxygen produces _______. 

    A) argon
    B) a high-temperature flame needed for flame cutting
    C) hydrogen
    D) a colorless, odorless, and tasteless gas
    B) a high-temperature flame needed for flame cutting
    (this multiple choice question has been scrambled)
  5. The smallest standard oxygen cylinder holds about ______ cubic feet of oxygen. 

    A) 80
    B) 65
    C) 85
    D) 40
    C) 85
    (this multiple choice question has been scrambled)
  6. Acetylene gas must be withdrawn from a cylinder at an hourly rate that does not exceed _____ of the cylinder capacity.

    A) 1/2
    B) 1/5
    C) 1/3
    D) 1/10
    D) 1/10
    (this multiple choice question has been scrambled)
  7. Safety fuse plugs in the top and bottom of an acetylene cylinder are designed to _______.

    A) release acetone from the cylinder
    B) prevent the withdrawal of acetone
    C) release acetylene gas in the event of a fire
    D) prevent the release of acetylene gas
    C) release acetylene gas in the event of a fire
    (this multiple choice question has been scrambled)
  8. Methyl-acetylene propadiene (MAPP*) gas, a liquefied fuel used in oxyfuel cutting, burns at temperatures almost as high as acetylene and has the stability of ______.

    A) natural gas
    B) propane
    C) propylene
    D) oxygen
    B) propane
    (this multiple choice question has been scrambled)
  9. The amount of liquefied gas remaining in a cylinder is determined by the ______ of the cylinder.

    A) pressure
    B) weight
    C) heat
    D) color
    B) weight
    (this multiple choice question has been scrambled)
  10. The regulators used on fuel gas cylinders are often painted red and always have ____ on all connections.

    A) right-hand threads
    B) safety latches
    C) left-hand threads
    D) metric threads
    C) left-hand threads
    (this multiple choice question has been scrambled)
  11. The attachment on the top of a fuel gas cylinder that allows the gas to flow only in one direction is called a ____.

    A) single-stage regulator
    B) check valve
    C) flashback arrestor
    D) two-stage regulator
    B) check valve
    (this multiple choice question has been scrambled)
  12. The cutting tips used with liquefied fuel gases must have at least____ preheat holes.

    A) seven
    B) four
    C) six
    D) five
    C) six
    (this multiple choice question has been scrambled)
  13. When lifting oxyfuel cutting cylinders, always use a(n) _____.

    A) sling cable
    B) sling strap
    C) cylinder cage
    D) electromagnet
    C) cylinder cage
    (this multiple choice question has been scrambled)
  14. To avoid injury from dirt that may be lodged in the valve and regulator seat of a gas cylinder, always stand______ the valve when opening the valve to clear the regulator seat. 

    A) in front of
    B) behind
    C) to the side of
    d) above
    C) to the side of
    (this multiple choice question has been scrambled)
  15. When clearing debris from new oxyfuel cutting equipment hoses, blow the hoses out with_______.

    A) nitrogen
    B) propane
    C) propylene
    D) compressed air
    A) nitrogen
    (this multiple choice question has been scrambled)
  16. The first step in installing a cutting tip is to _________. 

    A) identify the thickness of the material to be cut
    B) determine the size of cutting tip to use
    C) inspect the cutting tip sealing surfaces and orifices for damage
    D) determine the kind of gas being used
    A) identify the thickness of the material to be cut
    (this multiple choice question has been scrambled)
  17. Before opening cylinder valves, veriify that the adjusting screws on the oxygen and fuel gas regulators are ______.

    A) loose
    B) fully counter-clockwise
    C) tight
    D) fully clockwise
    A) loose
    (this multiple choice question has been scrambled)
  18. When a cutting flame has an excuss of fuel, the flame is called a(n) _______ flame.

    A) carburizing
    B) oxidizing
    C) neutral
    D) cold
    A) carburizing
    (this multiple choice question has been scrambled)
  19. When disassembling oxyfuel equipment verify that all pressure gauges read ______ before starting to take equipment apart.

    A) within 0.3 of 0
    B) within 0.2 of 0
    C) 0
    D) -1.0
    C) 0
    (this multiple choice question has been scrambled)
  20. When inspecting a completed cut made with oxyfuel cutting equipment, the drag lines of the cut should be near ____ and not very pronounced.

    A) 45 degrees
    B) 3 degrees
    C) horizontal 
    D) vertical
    D) vertical
    (this multiple choice question has been scrambled)
  21. Define Backfire
    Backfire is a loud snap or pop as a torch flame is extinguished
  22. Define Carburizing flame and what else is it called?
    A carburizing flame is a flame burning with an excess amount of fuel; also called a reducing flame.
  23. Define Drag lines
    Drag lines are the lines on the kerf that result form the travel of cutting oxygen stream into, through, and out of the metal.
  24. Define Ferrous metals
    Ferrous metals are metals that contain iron
  25. Define Flashback
    Flash back is the tip, torch, hose, or regulator, causing a high-pitched whistling or hissing sound.
  26. Define Kerf
    Kerf is the edge of the cut
  27. Define Neutral Flame
    Neutral flame is a flame-burning with correct proportions of fuel gas and oxygen.
  28. Define Oxidizing flame
    Oxidizing flame is a flame burning with an excess amount of oxygen
  29. Define Pierce.
    Pierce is to penetrate through metal plate with an oxyfuel cutting torch
  30. Define Slag
    Slag is a nonmetallic product resulting from the mutual dissolution of flux and non metallic impurities in some welding and brazing processes.
  31. Define Soapstone
    Soapstone is the soft, white stone used to mark metal
Author
ID
304157
Card Set
Oxyfuel Cutting
Description
Pipefitting Level One Edition 3 Module 4
Updated
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