【文章內(nèi)容簡介】 re that no one can e into contact with such equipment before it is repaired. Make sure that the path to fuse cabinets and similar installations is clear, in case the power supply has to be switched off in an emergency. Assume that all circuits are live until you are sure that this is not the case. Learn what action to take if someone suffers an electric shock. Before attempting a rescue, make sure that the power source is insulated. Switch off the power supply when you have finished with the equipment. Never get involved in unauthorized use, repair or maintenance. Never make improvised arrangements in a switch box, for example with clamp leads in plugs with matches or nails. Never connect power tools to unearthed sockets. Never force a plug into the wrong wall socket. Never use power tools where the earth wire is not screwed tightly in the plug. Never hang electric leads on nails or leave them lying where they can be damaged. Never misuse the earth terminal on electric welding equipment.Compressed airCompressed air can cause serious injury. A burst hose can thrash around and cause serious harm. If pressed air is connected to appliances which are not intended to cope with the pressure, serious accident can occur. Check hoses and couplings before use – remove damaged equipment. Make sure quickrelease couplings are correctly locked. Before connecting the pressed air, check that the equipment is made to withstand the pressure. Make sure that dirt cannot enter the air supply by backsuction at higher pressure from the unit. Close off the air supply and ease off the pressure before you take the connections apart. Never improvise with homemade clamps – use professionally desighed couplings. Never use pressed air to blow away metal chips, debris or dirt etc without using personal protective equipment. Particles can blow into your eyes or ears or those of people nearby even at low pressure. Never blow dust off you with pressed air.Handling chemicalsMany of the chemical substances used by modernday industrial panies are capable of causing harm. But they can also be handled safely if the proper safety regulations are followed. The following general suggestions can be applied to most chemical substances, but for more detailed information you should check the MSDS for each individual substance. Always read the label on every container. Put a label on every container you fill with chemical substances. Wear the remended protective equipment when working with chemicals. Keep solvents in well ventilated spaces – away from heat sources and direct sunlight. Make sure the equipment and plant have been made safe to work on. Read the regulations carefully when you are going to transfer chemicals from one vessel to another. It may be dangerous to use dirty containers. Keep all toxic materials on clearly labelled, well sealed containers. If you handle these containers, read every warning text and follow the instructions. Whenever a special handling device is specified, use it. Never taste or allow unknown products to e into contact with your skin, and only smell them with the greatest caution.Tools Hand tools, portable power tools or the ones operated by pressed airMost injuries involving hand tools are caused by damaged tools, tools that are used incorrectly or tools that have been wrongly stored. Keep your hands behind the cutting edge when using cutting tools. Keep knives and other sharp tools in a safe place, not in your pockets. Keep your tools clean and in good condition. Protect the edge of sharp tools when carrying them and when storing them.Before using portable power tools, make sure they are in good condition. If you are unsure about their safety, report this to your supervisor. Always use the right tool for the job. Make sure the cables do not e into contact with oil, heat or sharp edges. Check that all pressedair hoses to pressedair tools are tight. Wear safety goggles and ear protectors when working with power tools and tools operated by pressed air. Store tools, hand lamps, cables and hoses in a safe and tidy condition. Never life to pull power tools by the lead. Never try to modify or work a grinding wheel. Never press a portable grinding machine too hard against the work, as the grinding wheel may develop dangerous smooth patches. Never modify, adapt or rework the way the tool operates. Never take your eyes off the jobconcentrate on what you are doing.Working at heightsFalling from a great height is less mon than falling on the ground, but it obviously causes more serious injuries. Work platforms must satisfy approved standards. If you have to work outside of a temporary or permanent platform with railings and there is a risk of falling, you must wear a suitable safety harness. When working on roofs or modules where it is not possible to wear a retaining belt, the person concerned must exercise the greatest possible caution and have scaffolding positioned alongside the module or area of work. All kinds of material from nuts to planks may fall onto others from scaffolding, platforms, roofs and machines.Ladders – portable, fixedIf used correctly, portable ladders ca