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Electric Drills. Proper Safety Techniques . Outline. Introduction on Electric Drills Statistics on Drill Injuries Descriptions of Accidents OSHA Regulations on Electric Drills Safety Procedures to Follow Additional References. Introduction on Electric Drills.

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Electric Drills

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Electric Drills

Proper Safety Techniques


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Outline

  • Introduction on Electric Drills

  • Statistics on Drill Injuries

  • Descriptions of Accidents

  • OSHA Regulations on Electric Drills

  • Safety Procedures to Follow

  • Additional References


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Introduction on Electric Drills

  • Electric drills are certainly the most used power tool on the jobsite.

  • Because of their handiness and application to a very wide range of jobs, drills often receive very heavy usage on jobsites.

  • Electric drills are primarily used for boring holes in materials, but with the addition of accessories and attachments, drills can be used for sanding, screw driving, grinding, and mixing paint.

  • Using electric drills can be dangerous, but simple safety steps can be taken to greatly reduce the likelihood of an accident.


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Introduction on Electric Drills

Electric drills are available in a wide variety of types and capacities so choosing the right one is important.

  • Pistol Grip - This is most common type of hand drill, larger 1/2" models are often equipped with an optional spade handles and side handles for two handed control.

  • Right Angle Drill – This type of drill is very handy to get into tight spots, a must for plumbers and electricians.


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Introduction on Electric Drills

  • Hammer Drill - The hammer action is used when drilling rock, concrete or masonry material with a special bit.

  • Battery Powered – A cordless drill that utilizes a power pack to drive the electric motor.


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Statistics on Drill Injuries

  • Information available from the U.S. Consumer Product Safety Commission indicates more than 2,500 people were treated in hospitals for portable power drill injuries during 2005. Typical injuries were cuts and punctures to fingers and hands.


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Description of Accidents

  • An employee was screwing racks together using a drill. The drill bit slipped while the employee was inserting a screw and hit the palm of his left hand. The employee suffered a cut on the palm of his left hand and was hospitalized.

  • To avoid incidents like this one, take this precaution:

  • Never place your hand directly behind or in the path of the drill.


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Description of Accidents

  • An employee was electrocuted because an extension cord was missing the grounding prong. The drills grounding wire came in contact with the hot wire energizing the entire drill’s frame. The drill was not double insulated.

  • To avoid incidents like this one, take these precautions:

  • Make certain that approved GFCI’s or equipment grounding systems are

    used at construction sites.

  • Inspect electrical tools and equipment daily and remove damaged or

    defective equipment from use right away.

http://www.cdc.gov/elcosh/docs/d0500/d000543/section8.html


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OSHA Regulations

  • 1926 300 – Hand and Power Tools

    • General - All hand and power tools and similar equipment, whether furnished by the employer or the employee, shall be maintained in a safe condition.

    • 1926.302 (a)1 - Electric power operated tools shall either be of the double-insulated type or grounded in accordance with Subpart K.

    • 1926.302 (a)2 - The use of electric cords for hoisting or lowering tools shall NOT be permitted.


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OSHA Regulations

  • 1926.95 – Personal Protective Equipment

    • General - Personal protective equipment for the eyes, face, head, and other extremities shall be provided and maintained in reliable condition when using electric drills.

      Note - PPE is only effective when used correctly.


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Safety Procedures to Follow

  • Pre-Use Activities

    • Review and understand information given by manufacturer regarding safety procedures

  • Inspect the electric drill for damage or disrepair especially the drill chuck and power cord/battery pack.

  • If the drill fails your inspection, report the condition to your supervisor and take drill out of service.


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Safety Procedures to Follow

  • Operating Precautions

    • Keep your hands and fingers away from the rotating drill chuck and bit.

    • Never stop the rotation of the drill chuck or bit with your hands or fingers.

    • Avoid electrical shocks by not using a portable electric drill when it is raining or in wet conditions.

  • Always use a sharp drill bit, don't try to force a dull bit.


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Safety Procedures to Follow

  • Operating Precautions

    • Always wear safety glasses or goggles when drilling.

  • Never wear a tie or loose clothing or jewelry when using a power drill.

  • Always secure smaller material in a vise or clamp to a bench.

  • Never carry a portable power drill by the power cord.


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Safety Procedures to Follow

  • Operating Precautions

    • Check auxiliary handles, if part of the tool. Be sure they are securely installed. Always use the auxiliary drill handle when provided. It gives you more control of the drill, especially if stalled conditions occur. Grasp the drill firmly by insulated surfaces.

  • Before inserting a battery or plugging in a portable power drill, turn the power switch off.

  • Make all portable power drill adjustments with the power switch shut off and cord unplugged or battery disconnected.


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Additional References

  • http://www.osha.gov/Publications/osha3080.pdf

  • http://www.powertoolinstitute.com/pdf/SafetyisSpecific.pdf


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