Safe_Design_Manufacture_Import_and_Supply_of_Plant.doc

Operator applies cutting lubricant to the interface

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operator applies cutting lubricant to the interface between the tool and the part being machined, removing swarf from around the part, or where the tool is not brought to a complete stop during re-setting of the workpiece. Modern metal-working machine tools often incorporate protective guards that surround the cutter and provide lubricant and swarf removal that can eliminate the need for operator intervention and in doing so, eliminate the risk of entanglement. Where plant is computer controlled, the need for operator interaction is further reduced. Older style machines however, should be protected by the use of, for example, physical barriers or pressure sensitive mats. Lubricant application and swarf SAFE WORK AUSTRALIA MEMBERS’ MEETING 6 30 SEPTEMBER 2010 PAGE 41 OF 52
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removal can also be achieved by the retro- fitting of additional devices dedicated to these purposes and which allow the operator to remain outside the danger zone while the plant is operating. Woodworking machinery can also expose an operator to a risk of entanglement, especially when workpieces are being fed into machines. Such risks can be eliminated by the use of powered feed equipment that provides a safe distance between the operator from revolving cutters or blades. Plant such as grain augers or tree-limb mulchers also requires special attention to prevent operators becoming entangled in the plant. Controls for plant capable of entanglement should be able to bring the plant quickly to a complete stop. Plant capable of causing entanglement must not be able to continue rotating once the stop command is given. 7.9 Vibration Plant should be designed to avoid any risks resulting from vibration. Vibration may be transmitted to the whole body and particularly to hands and arms, when using plant. There are two approaches you can use to control vibration: preventing vibration happening in the first place, and separating the vibration from the person using the plant. Examples of prevention are substituting an internal combustion engine fitted to plant with an electric drive. Examples of separation are: suspended cabs, used on some commercial vehicles, and use of vibration isolation, for example, the use of rubber blocks or mounts on an engine to reduce (isolate) the vibration. 7.10 Exposure to radiation Plant should be designed so emission of any radiation is limited to the extent necessary for operation of the plant and so there is no risk to health and safety from emissions. The effects of radiation exposure are cumulative. Where necessary, instructions should be included stating the need for regular personal monitoring for radiation build-up. Radiation hazards are produced by a variety of sources and may be generated by non-ionising or ionising radiations. Information on non-ionising and ionising radiation for particular items of plant can be found in relevant Australian Standards. Plant should be designed so external radiation does not interfere with its operation or with people working on or in the vicinity of the plant.
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