Power Tool Safety - PowerPoint PPT Presentation

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Power Tool Safety


... don't wrap the electrical cord ... Check to ensure that accessories are properly ... make certain that you will not be drilling into piping or electric wiring. – PowerPoint PPT presentation

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Title: Power Tool Safety

Power Tool Safety
  • Power tools can be useful, yet dangerous when
    used incorrectly, stored improperly, or not
    maintained in good condition..
  • Your hand tools are an important part of your
    job, and should be treated, cared-for, and used
    in a professional manner.
  • This presentation will help to provide you ways
    in which you can help to use power tools in the
    proper way, so they will be there for you when
    you need them.

  • General Power Tool Rules
  • Precautions
  • Storage
  • Experience
  • Prepare Yourself
  • Prepare The Workplace
  • Know Prepare The Tool
  • Use the Right Tool
  • Summary

  • Almost all of us use power tools--at work and at
    home. When used incorrectly or not taken care of
    properly, hand tools can do enough damagepower
    tools can be even more damaging. One of the most
    frequent causes of power tool injuries is caused
    from failing to wear personal protective
    equipment, or failing to follow approved safety

General Power Tool Rules
  1. Most accidents with power tools are the result of
    one of the following three things
  2. Failing to wear personal protective equipment
  3. Failing to follow approved safety guidelines.
  4. Using the wrong tool for the job.

Power Tool Rules
  • Before using a power tool, take a minute to
    inspect it. Inspecting the tool can reveal
    problems which could make the tool unsafe.
    Inspect not only the tool, but yourself as well.
    Make sure you are wearing the proper attire to
    perform the job without risking an injury. Before
    plugging in the power tool
  • Make sure nuts and bolts are properly tightened.
  • Use a ground fault circuit interrupter.
  • Remove any rings or other jewelry.
  • Don't wear loose-fitting clothing.
  • Use PPE, such as face shields or safety goggles.
  • Use the tool only for the task for which it is

Power Tool Rules
  • Electricity Creates Hazards
  • As with anything else that involves electricity,
    power tools should be monitored for loose or
    fraying cords. The wrong cord, one that is not
    double-insulated or does not have three prongs,
    spells trouble. Make sure you don't use power
    tools in wet areas. Never place your finger on
    the activating trigger when transporting a power
    tool. This could cause it to start unexpectedly
    and result in an accident.

Power Tool Rules
  • Other Precautions
  • Power tools are designed for specific jobs. NEVER
    try to modify a fool to perform a job which it
    was never engineered to do. Power tools have
    guards installed to protect you from injury.
    Never remove a guard from a power tool and make
    sure all guards are functioning in proper working

Power Tool Rules
  • Other Precautions
  • Before using a power tool, take a look around
    you. Make sure your work area is free of clutter
    or dampness. Avoid loose-fitting clothing which
    can become entangled in the device and cause an
    injury. Remember, power tools can become hot
    after use. Avoid touching the motor casing to
    prevent burns

Power Tool Rules
  • Proper Storage Is Important, Too
  • When you are finished using a power tool,
    disconnect it immediately from its power source.
    To properly store a power tool, don't wrap the
    electrical cord around it. This can cause the
    cord to break, creating an electrical hazard.
    Store the tool in a dry, cool place.

Power Tool Rules
  • Experience Is Not Best Teacher
  • We learn from our mistakes, often being sadder,
    but wiser. Newfound wisdom, however, is little
    solace to a person severely injured or maimed for
    life because he failed to observe proper safety
    procedures. Experience alone is not the best

Power Tool Rules
  • Experience Is Not Best Teacher
  • "Just give me the short form, and I'll learn the
    rest as I go along" is, unfortunately, an
    attitude assumed by some workers when presented
    with an unfamiliar power tool. Trial-and-error is
    no way to learn how to operate a power tool!
    "Anything in particular I should know about using
    this?" is a postmature and improper question
    asked when applied to a power tool with which the
    user is unfamiliar.

Power Tool Rules
  • Experience Is Not Best Teacher
  • The novice should begin by thoroughly reading the
    instruction manual provided with the tool. If
    there is anything not understood, the worker
    should request clarification from a qualified,
    experienced party. Only after the manufacturer's
    instructions are thoroughly understood should the
    novitiate ask, "Now...Is there anything else you
    can think of that I should know?"

Power Tool Rules
  • Prepare Yourself
  • Never operate a power tool when under the
    influence of alcohol, illicit drugs, medication
    that might affect mental acuity or reaction time,
    or when fatigued. If you know you might be called
    upon to use a power tool the following day, forgo
    excessive "I had a hard night" style partying.

Power Tool Rules
  • Prepare Yourself
  • Determine the personal protective equipment
    recommended or mandated when using the tool --
    and wear it. Such equipment includes face
    shields, eye protection, respirators, hearing
    protection, and hand and foot protection. Do not
    wear loose clothing or jewelry that might be
    drawn into the tool, and properly secure long
    hair tresses.

Power Tool Rules
  • Prepare the Workplace
  • Begin by clearing obstructions that can impede
    safe work procedures, and provide adequate
    lighting. Post appropriate barriers and warning
    signs if the work being done might pose a danger
    to others, or if the intrusion of others might
    pose a danger to yourself.

Power Tool Rules
  • Prepare the Workplace
  • If the work area contains noxious fumes or a
    potentially ignitable atmosphere, purge and
    provide adequate ventilation.
  • Provide scaffolding, portable manlift, or
    appropriate ladder positioned so that a firm
    stance can be maintained without overreach and a
    firm grip can be maintained on the tool.
    Overreach is a major cause of accidents when
    using portable power tools.

Power Tool Rules
  • Know and Prepare the Tool
  • A thorough understanding of the particular tool
    and any special safety precautions pertaining to
    its use is a paramount consideration in power
    tool safety. There are also general safety
    considerations that must be observed when
    preparing any power tool for use.
  • A check of the tool should be made to ensure that
    it is in good condition, with all safety guards
    in place and in proper working order.
  • A check should be made for power supply
    integrity. The power supply cord or hose should
    be inspected, and repair or replacement
    undertaken if any defects are uncovered.
  • Check to ensure that accessories are properly
    rated for use with the tool. For example, a wire
    brush, grinding wheel, or abrasive cutoff wheel
    rated for 3000 rpm must not be used in a tool
    delivering 5000 rpm.
  • Grinding and cutoff wheels should be inspected
    carefully for cracks. Do not overtighten when
    installing the wheel, and use only the driving
    flanges and stress-relief blotters provided by
    the manufacturer. Before placing the tool in
    service, it is also advisable to operate it at
    top speed for 1 min in a protected enclosure to
    verify wheel integrity.

Power Tool Rules
  • Know and Prepare the Tool
  • Check to ensure that accessories such as saw
    blades and drill bits are sharp and in good
    condition. A dull saw blade, for example, invites
    hangup and injury from kickback. Dull tools also
    bring on operator fatigue and accompanying loss
    of alertness.
  • Sockets designed for hand tools should not be
    used with impact wrenches, because they can
    shatter when exposed to the force exerted by a
    power tool.
  • Make certain that the tool is disconnected from
    the power supply cord or hose before attaching
    any accessories or making adjustments, and make
    sure that adjustment keys or wrenches are removed
    before returning the tool to service.
  • Make sure that the press-to-operate trigger
    mechanism restores freely to the "off" position.
    If the tool has a lock-on operating mechanism,
    make sure that it releases freely.

Power Tool Rules
  • Use the Right Tool Right Way
  • The expression "Having the right tool is half the
    job" tells only half the story. You must also use
    the right tool the right wayor you might wind up
    in no condition to finish the job. Make sure that
    the tool is properly sized for the job, and is
    the right tool for the job. A circular saw is no
    substitute for a chain saw!
  • There are several general safety rules to apply
    when using power tools.
  • Disconnect the tool from its power source if it
    will be unused and remain unattended over a
    lengthy period of time, and disconnect the power
    supply before undertaking any adjustments or
    accessory change.
  • Never lift or drag a tool by its power supply
    cord or hose.
  • Always make certain that the workpiece is
    properly supported or clamped.
  • If the tool is equipped with side handles, use
    them when possible. This approach is especially
    important with tools such as orbital sanders,
    which can kick back if they snag. Observe extra
    caution and anticipate possible problems if space
    constraints dictate the removal of side handles.

Power Tool Rules
  • Use the Right Tool Right Way
  • Turn the tool off immediately if abnormal noise
    or vibration is experienced.
  • Do not side-load abrasive cutoff wheels grind on
    the periphery only to prevent cracking and
  • When using grinders, cutoff wheels, and sanders,
    make sure that the spark stream is directed away
    from persons and combustibles.
  • Electric heat guns can develop 1000 F at the
    nozzle. This temperature is well above the
    ignition point of many materials. A fully-charged
    fire extinguisher should be nearby whenever a
    heat gun is used. For reasons of toxicity, a heat
    gun should never be used to strip lead-based
  • When using an electric drill, make certain that
    you will not be drilling into piping or electric
    wiring. As you approach hole breakthrough, grip
    the tool firmly and reduce pressure to prevent
    the bit from seizing, with a possible result of
    the tool rotating about the bit. Do not attempt
    to free a jammed bit by starting and stopping the
    drill motor. Unplug the tool and free the bit.

Power Tool Rules
  • Use the Right Tool Right Way
  • Circular saws can be particularly dangerous when
    used improperly -- especially so, because they
    are subject to kickback in the direction of the
    user when the blade binds. Any change in the
    normal high-pitched whine of the circular saw
    blade should be interpreted to signify binding
    and potential kickback.
  • To prevent circular saw blade binding, the
    workpiece should, when the nature of the cut so
    dictates, be supported on both sides of the cut.
    The possibility of blade pinching is reduced by
    setting the depth of cut to not more than ¼-in.
    greater than the thickness of the stock. The less
    blade exposed to the stock, the less chance of
    binding and kickback.
  • Extra caution should be observed when cutting
    wet, knotty, or warped stock such materials
    invite pinching and resultant kickback. The blade
    guard should be checked occasionally to ensure
    that it is not bound up by cutting debris,
    preventing it from operating freely. This check
    should be undertaken especially often when
    cutting wet stock.

  • Power Tool Rules
  • Use your tool only for the specific task it was
    designed to do.
  • Read the owner's manual before using your tool.
  • Never use any tool--power or manual--unless you
    are trained to do so.
  • Inspect before each use and replace or repair if
    parts are worn or damaged.
  • Inspect screws, nuts, bolts and moveable parts to
    make sure they are tightened.
  • Before plugging or unplugging tools, be sure
    power switch is turned to "OFF."

  • Power Tool Rules
  • Never disconnect power by pulling on the
    cord--remove the plug from the outlet.
  • Never clean or repair a tool unless power is
    disconnected. (Repair tools only if you are
    trained to do so.)
  • When working on ladders or scaffolding, rest
    power tools on a flat surface or in a bin secured
    to the ladder itself. ( A falling tool can
    seriously injure a coworker or bystander.)
  • Use a ground fault circuit interrupter when
    working with power tools.
  • Do not wear rings, jewelry, or loose clothing
    when operating power tools.
  • Wear Personal Protective Equipment (PPE), such as
    face shields, safety goggles, disposable masks,
    etc. as required.
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