Types of Portable Power Tools Electric 2 Pneumatic

Types of Portable Power Tools Electric 2. Pneumatic (air) 3. Liquid fuel 4. Hydraulic 5. Powderactuated 1.

Portable Power Tool Hazards Hit by flying debris n Hit by broken tool part n Puncture with a sharp tool n Explosion or fire when sparks from a tool ignite flammable or combustible materials n Electric shock from a frayed or defective power cord n Musculoskeletal disorders (MSDs) from repetitive misuse of a tool n

General Precautions for Operating Power Tools n n n Never carry a tool or unplug it by the cord or hose Disconnect tools when they are not in use Make sure observers are at a safe distance Secure work with a vise, clamp, or other support Keep cords and hoses away from heat, liquids, and sharp edges Examine tools before each use

General Precautions (cont. ) Keep cutting tools sharp and lubricated n Do not wear loose clothes, ties, or jewelry n Tie back long hair n Mark or tag all damaged tools with “Do Not Use” n Always wear personal protective equipment (PPE) appropriate to the work n Use fire curtains near flammables n

Tool Guards protect from: n Point of operation hazards n Nip points n Rotating parts n Flying chips or sparks

Guarded Power Tool Parts Gears, sprockets, and sprocket chain drives n Belt and pulley drives, pulleys and drums n Hazardous revolving or reciprocating parts n Exposed shafts and projecting shaft ends n Collars, clutches, and couplings n

Electric Tool Safety Operate tools within their design limitations n Wear appropriate gloves and footwear n Store tools in a dry location n Do not use them in wet or damp locations n Work areas should be well lighted n

Power Grinder Safety n Always use eye protection n Turn off power when it’s not in use n Never clamp a handheld grinder in a vise

Pneumatic Tool Safety Always wear eye and hearing protection n Make sure air hose connections are secure n Ensure the safety clip for attachments is installed and secure n Use screens to protect nearby workers n Never point the tool at anyone n

Safety with Powder-Actuated Tools n n n Do not use in an explosive or flammable atmosphere Inspect the tool prior to use Never point the tool at anyone Load the tool only when it is going to be used Keep hands clear of the barrel end

Jack Safety 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 n

Safety Switches n n n Positive On-Off - Platen sanders, disc sanders, and grinders with less than 2”-diameter discs, shears, and scroll saws Momentary On-Off - Drills; tappers; fastener drivers; horizontal, vertical, and angle grinders; disc and belt sanders; and reciprocating and saber saws Constant pressure switch—auto shut off - Circular saws and chain saws

What’s Wrong with This Picture? n Employee was cutting plywood with a circular saw n He tapes back the lower blade guard n He holds the wood n The saw catches in wood and kicks back n The saw hit the employee in the abdomen, leaving a 10” laceration

What Caused the Accident?

What Should Have Been Done? How could this worker have cut the board safely? n What type of PPE should be worn? n

Key Points to Remember n n n Keep all tools regularly maintained Use the right tool for the job Examine each tool for damage before use Operate tools in accordance with the manufacturer’s instructions Provide and use the proper personal protective equipment