Angle Grinders - Safety Talk


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Angle Grinders - Safety Talk

The injuries resulting from the use of angle grinders are caused by:
* particles being thrown out from the grinding work;
* the grinding wheel breaking up or shattering; and
* contact between a revolving wheel and a person?s hand or another part of the body.

The most serious injuries involving angle grinders and abrasive wheels occur when the wheel shatters
and flying fragments strike the operator or people who are close by. In some cases this has resulted in a fatality when a person has had an artery severed by a flying piece of the wheel.

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Angle Grinders - Safety Talk

  1. 1. Angle Grinders Page 1 of 10 © PA Services Group - SMARTsafe 2013 Document Number: ST036 Revision 2013 1.0 Angle Grinders SAFETY AWARENESS KEPT SIMPLE This pack contains: • 7 - Page Talk Text • 5 - OHP Presentation Slide Pack Using the talks (Extract “How to Present Safety Talks”): Plan which topic you want to discuss with your team. Read through the script before you hold the meeting to familiarise yourself with the material. Start the talk with a comment that makes the topic relevant to the team. For example, if you have seen a number of people using ladders incorrectly, use this as your opening comment. Follow the script but don’t read straight from the page. The script is only a prompt and it will sound better if you use your own words. Ask the questions as they appear in the script. It is important you do this because they are a lead in to the next section of your talk. Give the team enough time to answer the questions. Safety talks can be boring for the team if you are the only one talking. Hand out the information sheets as they appear in the script. Don’t hand out all the information sheets at the start of the talk otherwise there is a temptation for the team to read ahead and not listen to the points you are making. Collect the information sheets at the end of the talk so they can be used again. Safety Talk Mini - Delivery Pack To obtain your full Safety Talk Delivery Pack go to: The full Safety Talk pack contains MS Office Editable documents : • 7 - Page Talk Text • 5 - OHP Presentation Slide Pack • 10 - A5 talk Handout Sheets • Assessment and Assessment Answers Sheet • Employee Attendance Register • A “How to Present Safety Talks Guide” SMARTsafe Safety Talks - ST036
  2. 2. Angle Grinders Page 4 of 10 © PA Services Group - SMARTsafe 2013 Document Number: ST036 Revision 2013 1.0 SELECTING THE CORRECT WHEEL Grinding wheels are made with three different types of bonding material. These are: Organic bonded wheels - which use resins, rubber or shellac to bond the abrasive material together. Inorganic bonded wheels - which use sodium silicate, magnesium, oxy-chloride or metal as a bonding agent. Vitrified bonded wheels - which use clay, glass or porcelain as a bonding agent. “What type of wheel must you use with portable angle grinders?” You should only use organic bonded wheels with portable angle grinders. They tend to be less brittle than the other two types of grinding wheels and more capable of withstanding the wheel flexing that occurs with angle grinding. Organic bonded wheels are also made with reinforcing fibre or filament to provide greater strength. You should only use: soft grade wheels when angle grinding hard materials; and hard grade wheels when angle grinding soft materials. “What can happen if you use a soft grade wheel on soft material?” If a soft grade wheel is used on soft material the wheel face can become clogged or loaded with particles of the material being cut or ground. If a hard grade wheel is used on hard material this can cause the wheel face to become glazed. If a wheel becomes glazed or clogged it reduces the abrasiveness of the wheel causing you to press the wheel harder against the work piece. This can lead to excessive flexing of the wheel causing it to shatter. For this reason you should not use masonry grinding wheels on metal or metal grinding wheels for grinding masonry. “What else should you consider when selecting a grinding wheel?” Hand out sheet 1 – Selecting grinding wheels This document is a partial preview. Full document download can be found on Flevy:
  3. 3. Angle Grinders Page 7 of 10 © PA Services Group - SMARTsafe 2013 Document Number: ST036 Revision 2013 1.0 A wheel that is too loose on the spindle will run off-centre, causing stress and vibration that can lead to the wheel shattering. After fitting the wheel and before turning on the power, turn the wheel by hand for a few revolutions to check the fitting and to make sure the wheel is clear of the grinder guard. CHECKING THE GRINDER “What items should you check on an angle grinder before you operate it?” Hand out sheet 3 – Checking the grinder Before you start any grinding work you should check the condition of the grinder. You should check the: outer casing is free of cracks or damage; operating switch operates and automatically returns to the OFF position; grip handle is fitted and secure; guard is securely in position; exposure angle of the wheel is no more than 150 degrees; flexible cord is free of any damage to the insulation; electrical inspection tag is up-to-date; power plug does not have cracks or bent pins; and casing screws are intact and firmly in position. Electrically operated angle grinders used with grinding wheels of 130 mm diameter or greater must be fitted with a switch or speed control device that automatically returns to the OFF position and is not capable of being locked in the ON position. This is known as a “deadman switch”. Pneumatic grinders must be checked to make sure the: air hose does not have any splits or cracking; air hose is securely clamped to the grinder body; air hose coupling is securely clamped; operating trigger automatically returns to the OFF position; and grinder stops completely when the operating trigger is in the OFF position. This document is a partial preview. Full document download can be found on Flevy:
  4. 4. Angle Grinders Page 10 of 10 © PA Services Group - SMARTsafe 2013 Document Number: ST036 Revision 2013 1.0 LICENCE AND LIMITATION OF LIABILITY Under copyright laws, the documentation may not be copied, photocopied, reproduced, translated or reduced to any electronic medium or machine-readable form, in whole or in part or sold or distributed without the prior written consent of PA Services Group Pty Ltd. SMARTsafe is a registered trademark of the PA Services Group. Copyright 2013 PA Services Group Pty Ltd GPO Box 924, Brisbane QLD 4001 Email: Under no circumstances shall PA Services Group Pty Ltd or associated Companies be liable for any loss, damage or injury (including without limitation any loss of profit, indirect, consequential or incremental loss, damage or injury) arising from the supply of this TALK or use of the MATERIAL and any accompanying written materials or any failure by PA Services Group Pty Ltd or trademarks products branded SMARTsafe perform any obligation or observe any terms of this agreement. By using this material the Purchaser agrees to the above terms. The laws of Australia govern this agreement. The artwork “IMAGES” in the Safety Talks are incorporated for viewing purposes. Reproducing the “IMAGES” in other documents or transferring them in electronic form is a breach of third party copyright. The “IMAGES” used in this material are drawn from photo stock and other sources. PA Services Group Pty Ltd has the right to make periodic changes, additions and deletions to the material and products described within the publications without notice. DISCLAIMER The information presented in the Safety Talks has been compiled from sources believed reliable. However it cannot be assumed that all acceptable measures are contained within the talk nor that other additional measures may not be required under particular, specific or exceptional circumstances and that your company, manufactures or statutory procedures and rules may apply and take precedence over this material. This document is a partial preview. Full document download can be found on Flevy:
  5. 5. Angle Grinders – ST036 © PA Services Group - SMARTsafe 2013 Tap here 45 degrees from centre line Tap here Tap here Tap here 25mm in from Outside edge Sheet 2 – Testing the Wheel This document is a partial preview. Full document download can be found on Flevy:
  6. 6. Angle Grinders – ST036 © PA Services Group - SMARTsafe 2013 • Remove flammables. • Secure the work piece in a vice or clamp. • Never use your foot as the clamp. • Keep work piece at waist height. • Adopt a comfortable stance. • Keep both hands on the grinder. • Run the grinder “up to speed”. • Apply minimal pressure on the wheel. • Avoid using excessive force. • Fully position the guard between you and the work piece. • Position the grinding wheel between 15 to 30 degrees. • Take frequent breaks to rest arms and hands. • Never put the grinder down until the wheel has fully stopped. • Don’t drop grinders onto the ground. Sheet 5 – Operating the Grinder This document is a partial preview. Full document download can be found on Flevy:
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