Hand Portable Power Tools 29 CFR Subpart P
Hand Portable Power Tools 29 CFR, Subpart P
Hazard Recognition n n Tools are common in “day-to-day” life Difficult to spot hazards due to familiarity Most tools manufactured with safety devices Users must inspect the tool daily Often misused
Examples of Misuse n Using a screwdriver as a chisel n Using tools with loose handles n Wrenches with sprung jaws
Other Safety Factors n General housekeeping n Use of personal protective equipment n Spark shield and protection around flammables n Don’t use tools near aisleways
Types of Power Tools n n n Electric Pneumatic (air) Liquid fuel Hydraulic Powder-actuated
General Power Tool Precautions n Never carry a tool by the cord or hose n Never yank the cord to unplug it n Keep cords and hoses away from heat, oil, and sharp edges n Disconnect tools when not in use n Make sure observers are at a safe distance n Secure work with a vise or clamp
General Precautions (cont. ) n Keep tools sharp and lubricated n Do not wear loose clothes, ties, jewelry, etc. n Mark or tag all damaged tools with “Do Not Use”
Guarding Requirements n n n n Belts Gears Shafts Pulleys Sprockets Spindles Drums n Fly wheels n Chains n Other moving parts
Guards Protect Against: Guards will provide protection for operators from the following hazards: n Point of operation n In-running nip points n Rotating parts n Flying chips and sparks
Power Tools Requiring Momentary Switches n n n n Drills Tappers Fastener drivers Horizontal, vertical, and angle grinders Disc and belt sanders Reciprocating saws Saber saws Note: These tools can have a “lock-on” switch that turns off with a single finger motion
Safety With Electric Tools n Operate them within their design limitations n Gloves and footwear are recommended n When they’re not in use, store them in a dry location n Do not use them in wet or damp locations n Work areas should be well lighted
Safety With Power Grinders n Always use eye protection n Turn off power when it’s not in use n Never clamp a hand-held grinder in a vise
Hazards From Pneumatic Tools n Being struck by attachments n Being struck by fasteners, etc. n Noise
Safety With Powder-Actuated Tools n Do not use in an explosive or flammable atmosphere n Inspect the tool prior to use n Never point the tool at anyone n Load the tool only when it is going to be used n Keep hands clear of the barrel end
Safety With Jacks n Set up a jack so that the base rests on a firm level surface n Make sure the jack is centered n Ensure that the jack head is against a level surface n Be certain the lift force is applied evenly
The Five Basic Rules for Power Tools n Keep all tools regularly maintained n Use the right tool for the job n Examine each tool for damage before use n Operate tools in accordance with the manufacturer n Provide and use the proper personal protective equipment
Quiz 1. There are several types of power tools, including ___________ and __________. 2. It is okay to put a portable grinder in a vise as long as it is tightened securely. True or False 3. Most hazards associated with hand tools are easy to spot because we very seldom would use a tool in “day-to-day” life. True or False 4. Guards should offer protection from ________, rotating parts, and flying chips or sparks. 5. Tools requiring momentary on/off switches can never have a lock-on switch. True or False
Quiz (cont. ) 6. Never use electric tools in ______ conditions. 7. When using grinders you should always wear eye protection. True or False 8. Parts on tools that should be guarded include ____________, and ______. 9. Because powder-actuated tools use small explosive charges, it is okay to use them in explosive atmospheres. True or False 10. When not in use, power tools should be _____________________.
Quiz Answers 1. There are several types of power tools, including electric, pneumatic, liquid fuel, hydraulic, and powder-actuated. 2. False. You should never place a portable grinder in a vice. 3. False. The hazards are difficult to spot because they become so routine. 4. Guards should offer protection from point of operation, in-running nip points, rotating parts, and flying chips or sparks. 5. False. Tools requiring momentary on/off switches can have a lock-on switch if they can be activated with one finger.
Quiz Answers (cont. ) 6. Never use electric tools in wet conditions. 7. True. You must always wear eye protection when using a grinder. 8. Parts on tools that should be guarded include belts, gears, shafts, pulleys, sprockets, spindles, and drums. 9. False. Powder-actuated tools should never be used in flammable or explosive atmospheres. 10. When not in use, power tools should be disconnected.
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