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Welding Safety

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Oxygen and acetylene cylinders must always be kept in an ... Never handle cylinders with oily, greasy hands. Keep oil and grease away from the cylinders. ... – PowerPoint PPT presentation

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Title: Welding Safety


1
Welding Safety
2
Safe Cylinder Handling and Storage
  • The gases in oxygen and acetylene cylinders are
    flammable and, under some conditions, explosive!
  • Oxygen and acetylene cylinders must always be
    kept in an upright position, even while theyre
    being moved.
  • Avoid banging cylinders against each other or
    against another object.
  • Do not drag or roll cylinders across the floor.

3
Safe Cylinder Handling and Storage Cont.
  • Never handle cylinders with oily, greasy hands.
    Keep oil and grease away from the cylinders.
  • Do not store oxygen cylinders with acetylene
    cylinders. Store them separately.

4
Different Types of Cylinders
  • Oxy-fuel cylinders
  • Oxygen cylinders

5
Ultraviolet Light
  • Ultraviolet light is a form of radiation which is
    not visible to the human eye.
  • Radiated energy, or radiation, is given off by
    many objects a light bulb, a crackling fire, and
    stars are some examples of objects which emit
    radiation.

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aviolet.html
6
Fire Prevention
  • Keep the shop clean. Entrances, emergency exits,
    and aisles must be kept clear at all times.
  • Know where the fire extinguishers are located and
    read the instructions on the extinguishers.
  • Know what types of fires the extinguishers are
    for and know how to use them in an emergency.

7
Fire Extinguishers
  • Fire extinguishers are labeled according to the
    type of fire on which they may be used.
  • Fires involving wood or cloth, flammable liquids,
    electrical, or metal sources react differently to
    extinguishers.
  • Using one type of extinguisher on the wrong type
    of fire could be dangerous and make matters even
    worse.

(Phoenix Fire Department)
8
Types of Extinguishers
  • A Type A label is in a triangle on the
    extinguisher. This extinguisher is used for
    ordinary combustibles such as cloth, wood, rubber
    and many plastics.
  • A Type B label is in a square on the
    extinguisher. This extinguisher is used for
    flammable liquid fires such as oil, gasoline,
    paints, lacquers, grease, and solvents.

(Phoenix Fire Department)
9
Types of Extinguishers Cont.
  • A Type C label is in a circle on the
    extinguisher. This extinguisher is used for
    electrical fires such as in wiring, fuse boxes,
    energized electrical equipment and other
    electrical sources.
  • A Type D label is in a star on the extinguisher.
    This extinguisher is used for metal fires such as
    magnesium, titanium and sodium.

(Phoenix Fire Department)
10
Welding Near Flammable Materials
  • Keep the work area clean and also free of
    flammable materials.
  • Empty or remove any flammable materials that are
    present while welding.
  • Have a suitable fire extinguisher nearby.
  • Label newly welded items as hot to alert
    classmates.

11
Hand Tool Safety
  • There are many different types of hand tools.
    Always use the tool designed for the work you
    want to do.
  • Before you use a tool, check it to be sure its
    clean and in good condition.
  • Always carry tools by the handle.
  • Do not carry tools in your pockets.

12
Portable Power Tool Safety
  • Wear safety glasses, goggles or a face shield
    whenever you use a power tool.
  • Use power tools only when the instructor is
    present in the shop.
  • Remove rings, watches, bracelets and necklaces.
  • When disconnecting a power tool, always pull the
    plug, never yank on the cord.

13
Arc Welding Safety
  • Be sure youre standing on a dry floor and that
    your hands are dry when you operate the welding
    unit.
  • Check the ground connections. The work must be
    properly grounded.
  • Be sure the insulating shields on the electrode
    holder are in place and in good condition.

14
Arc Welding Safety Cont.
  • Check the cables to be sure theyre dry and free
    of oil or grease.
  • Lay the cables where they wont be tripped over
    or damaged.
  • Always keep welding cables away from power supply
    cables or other power lines.

15
Basic Electrical Safety
  • All electric power tools and equipment must be
    grounded(3 wires or double insulated).
  • Electric tools and equipment must be in good
    condition.
  • Make sure the plug on the power tool is in good
    condition also.
  • Electric motors must be kept dry, clean, and free
    of dust or particles.

16
In Conclusion
  • Always watch what you are doing when you weld.
    The slightest mistake can mean life or death.
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