Hand Tool Safe Usage Basic Knowledge

Hand tools can be divided into wrenches, pliers, screwdrivers, tape measures, hammers, sockets, cuttings, scissors, sets, and auxiliary tools such as tool carts.

Most people are not trained before using hand tools, resulting in frequent accidental injuries. According to statistics, injuries caused by improper use of hand tools account for 7% to 8% of all accidental injuries each year. Therefore, for all kinds of hand tools and portable power tools commonly used, you must understand the correct use method and pay attention to the safety of use.

How to use hand tools?

Wrench

Hand Tools Use Tips
① The appropriate size of the wrench should be selected according to the nature of the work.
②When using an adjustable wrench, force should be applied to the fixed side, and never to the movable side.
③If the opening of the wrench is worn or slipped during use, do not continue to use it to avoid slipping and hurting your hands.
④Do not hit with a wrench as a hammer.
⑤Do not put a pipe on the handle end of the wrench to increase the torque of the wrench.

Screwdriver

Hand Tools Use Tips
①Select the appropriate screwdriver according to the size and shape of the groove of the screw head.
②The handle of the screwdriver should not be struck with a hammer, and the damaged handle should be replaced immediately.
③Do not use the screwdriver as a chisel or a lever.
④ To test the current, use an electrician's screwdriver, and do not use a general screwdriver to test high-voltage electricity.
⑤ The blade of the screwdriver should not be ground, so as not to damage the hardened surface.
⑥The screwdriver should not be put in the pocket of clothes or trousers, so as to avoid injury when bumping or falling.

Pliers

Hand Tools Use Tips
①Pliers are only used for fastening, inserting and removing various pins, nails, and cutting or twisting various wires.
②Pliers cannot be used to tighten or knock bolts or nuts.
③ Do not tap or lengthen the handle at the pliers handle to increase the clamping or cutting force.

Rotary Hammer

Hand Tools Use Tips
①The tightness of the drill bit must use a wrench that meets the specifications.
②Before starting the electric drill switch, the electric drill must be firmly held.
③When the electric drill is not in use or when replacing the drill bit, turn off the power first and then put it down.
④The drill should be removed first when finishing work.
⑤ Apply pressure to the drill bit with moderate force. Too much force may break the drill bit or reduce the speed of the drill bit. If it is too small, the drill bit is easy to wear. When drilling quickly, the pressure must be light to facilitate smooth perforation.
⑥ When drilling small workpieces, the workpiece should be fixed with a fixture and must not be held by hand for drilling.
⑦Do not wear loose clothes, ties, scarves, or gloves when using the electric drill, and long hair should be tied.

Prevention of Hand Tool Injuries

01 Direct Factors of Injuries Caused by Hand Tools Use
①Shock or impact: The tools used fly out of control or the body loses balance, so as to hit the worker itself or nearby colleagues.
②Cutting: cut by the cutting edge, burr or sharp corner of the tool.
③Splash: Substances generated during work, such as chips, chemical solvents, etc., splash out and hurt the body, eyes or skin of workers or others.
④ Electric shock: electric shock accident caused by electric tools.

02 Causes of Injuries Caused by Hand Tools Use
①Inappropriate use of hand tools.
②The maintenance is not in accordance with the regulations.
③ Failure to check according to regulations before use.
④ The method used is incorrect.
⑤ Not wearing appropriate personal protective equipment.
⑥ The tool is stored in an improper location.

03 Principles for Hand Tools Use
①Choose the hand tool that suits the work needs.
②Keep the tool in good condition.
③Choose hand tools with good material.
④Be sure to check the hand tool before use.
⑤ Use hand tools in the correct way.
⑥ Hand tools should be placed in a safe place.
⑦ Wear appropriate protective equipment before working.
⑧ Choose standard tools or specified hand tools.