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.

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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
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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.

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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.

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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.

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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.

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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.

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In Conclusion

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