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Instructions for labor protection when working with hand power tools

Occupational Safety and Health / Standard instructions for labor protection

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Safe Operation

1. General safety requirements

1.1. Workers at least 18 years of age who have passed a preliminary medical examination, have been trained in safe working methods and methods in their main profession and in electrical safety, have been trained under the guidance of an experienced worker and have been instructed at the workplace are allowed to work independently with power tools.

1.2. Admission to independent work is made after certification and issuance of a certificate. In the future, testing of knowledge of safe methods and methods of work is carried out annually.

1.3. After completing the training in electrical safety, and in the future, knowledge is tested annually in the qualification commission for group II in electrical safety. Only workers with an electrical safety group of at least II are allowed to work with power tools.

1.4. Every three months, a repeated safety briefing is conducted.

1.5. When working with a power tool, the worker is exposed to increased levels of vibration and noise. Therefore, all workers using power tools in their work must undergo medical examinations annually.

1.6. Individual protection means:

1.6.1. To work with power tools, workers, in addition to overalls, in the main profession should be issued the following personal protective equipment free of charge:

• goggles;
• anti-vibration gloves;
• anti-noise helmets, earmuffs or plugs;
• dielectric personal protective equipment (gloves, boots, galoshes, rugs).

1.6.2. Vibration-isolating gloves, as well as personal noise protection equipment, are used if measurements of harmful production factors affecting workers show that vibration and noise levels exceed the norm.

1.6.3. Dielectric personal protective equipment is used when working with class I power tools, as well as class II and III power tools in the preparation and production of construction and installation works.

1.7. The total time of work with a power tool that generates high levels of vibration should not exceed 2/3 of the working day.

1.8. Power tools of class I can only be used in rooms without increased danger, class II - in rooms with increased danger and outdoors, class III - in especially dangerous rooms and in adverse conditions (boilers, tanks, etc.).

1.8.1. Premises with increased danger are characterized by the presence of one of the following conditions:

• dampness (relative air humidity exceeds 75% for a long time) or conductive dust;
• conductive floors (metal, earthen, reinforced concrete, brick, etc.);
• high temperature (exceeding +35°C);
• the possibility of simultaneous contact with the metal structures of buildings connected to the ground, technological devices, mechanisms, etc., on the one hand, and to the metal cases of electrical equipment, on the other.

1.8.2. Particularly dangerous premises are characterized by the presence of one of the following conditions:

• special dampness (relative air humidity is close to 100%, the ceiling, walls, floor and objects in the room are covered with moisture);
• chemically active or organic environment (constantly or for a long time there are aggressive vapors, gases, liquids, deposits or mold are formed that destroy the insulation and current-carrying parts of electrical equipment);
• at the same time at least two conditions of increased danger specified in clause 1.8.1 of this Instruction.

1.8.3. Premises without increased danger - premises in which there are no conditions specified in clauses 1.8.1 and 1.8.2 of this Instruction.

1.8.4. It is not allowed to operate the power tool in explosive rooms or rooms with a chemically active environment that destroys metals and insulation.

1.8.5. Class III power tools are produced for a rated voltage not exceeding 42 V, which is reflected in the marking located on the main part of the machine.

1.8.6. Class II power tools are marked with the corresponding symbol.

1.8.7. In conditions of exposure to drops and splashes, as well as outdoors during snowfall or rain, it is only allowed to use the power tool, the marking of which contains the appropriate signs (a drop in a triangle or two drops).

1.9. Do only the work that is assigned to you and that corresponds to your specialty. In necessary cases (unfamiliar work, ignorance of safe working methods, etc.), ask the supervisor for an explanation and demonstration of safe working methods and methods.

1.10. When working with other workers, coordinate your mutual actions, make sure that their and your actions do not lead to someone's injury.

1.11. During work, do not distract yourself and do not distract other workers from the work.

1.12. Do not turn on or stop (except in emergency cases) machines, machines and mechanisms that you have not been assigned to work on.

1.13. Comply with the requirements of the Internal Labor Regulations. The use of alcoholic beverages at the enterprise and the appearance at work in a state of intoxication is not allowed. Smoking should only be done in designated areas.

1.14. Do not obstruct the approaches to shields with fire-fighting equipment and fire hydrants. The use of fire-fighting equipment for other purposes is not allowed.

1.15. The victim or eyewitness must immediately notify the master about each accident or accident.

1.16. The requirements of this Instruction are mandatory. Failure to comply with these requirements is considered as a violation of labor and production discipline.

2. Safety requirements before starting work

2.1. Put on your work clothes, put it in order. Prepare personal protective equipment, make sure they are in good condition. Replace defective personal protective equipment.

2.2. Obtain an assignment from your immediate supervisor.

2.3. Obtain the tool from an electrician responsible for maintaining and maintaining the power tool. At the same time, check with him:

• completeness and reliability of fastening parts;
• serviceability of the cable (cord), its protective tube and plug; the integrity of the insulating parts of the body, handle and brush holder covers; the presence of protective covers and their serviceability (everything listed in this paragraph is checked by external inspection);
• serviceability of the gearbox (turning of the tool spindle is checked with the engine turned off);
• idling;
• serviceability of the ground circuit between the body of the tool and the grounding contact of the plug (only for class I tools).

2.4. If at least one of the requirements listed in clause 2.3 of this Instruction does not comply, the power tool is not issued (not accepted) for work.

2.5. Check the compliance of the power tool with the conditions of the forthcoming work, taking into account the requirements set forth in clause 1.8 of this Instruction.

2.6. Free the workplace from foreign objects (parts, assemblies, building materials, etc.).

2.7. In the case of work at height, require the installation of scaffolds, decking, scaffolding with enclosing structures. Working with power tools from ladders is not allowed.

2.8. Check the working tool. It should not have cracks, potholes, burrs, nicks.

2.9. Ensure that a guard is in place to protect any abrasive wheels with a diameter of 40 mm or more. The casing must be made of sheet steel. The opening angle of the cover must not exceed 90°.

2.10. If you have to work in closed tanks, make sure that the power source (transformer, converter, etc.) is outside the tank and its secondary circuit is not grounded.

2.11. Ground a class I power tool. Remember that earthing class II and III power tools is not allowed.

2.12. Notify the foreman and foreman of all detected malfunctions.

3. Safety requirements during work

3.1. Connect the power tool to the mains only using plug connections that meet the requirements of electrical safety. Connecting auxiliary equipment (transformers, frequency converters, circuit breakers, etc.) to the network and disconnecting it must be carried out only by an electrician.

3.2. Installation and change of the working tool, installation of nozzles are carried out under the condition that the electric machine is disconnected from the mains with a plug *.

3.3. Make sure that the cable (cord) of the power tool is protected from accidental damage. To do this, the cable must be suspended. Hang cables or wires above workplaces at a height of 2,5 m, above walkways - 3,5 m, and above driveways - 6 m.

3.4. Make sure that cables or wires do not come into contact with metal, hot, wet and oily surfaces or objects.

3.5. Do not allow tension and twisting of the cable (cord). Do not stress them, i.e. do not place a load on them.

3.6. Switch on the power tool only after it is in the working position.

3.7. Do not give the power tool to other workers who are not authorized to use it.

3.8. When moving to the next job, unplug the power tool with the mains plug.

Carry the power tool by holding it only by the handle.

3.9. At any break in work, disconnect the power tool from the mains with the mains plug.

3.10. Protect the power tool from impacts, drops, dirt and water.

3.11. When working with an electric drilling machine, use stops and brackets that prevent reverse rotation in case of accidental jamming of the drill and when reaming in the hole. Make sure that the stop brackets are strong enough and have undamaged threads.

3.12. When using an electric drill with a long drill, disconnect it from the mains with a switch until the drill is completely removed from the hole to be drilled.

3.13. When working with abrasive wheels, make sure that they are tested for strength. Make sure that sparks do not fall on you, others and the cable (cord).

3.14. Make sure that you or your overalls do not touch the rotating working tool or spindle during operation. Do not stop a rotating work tool or spindle by hand.

3.15. In case of failure of personal protective equipment, stop work.

3.16. In the process of work, monitor the serviceability of the power tool.

4. Safety requirements in emergency situations

4.1. In the event of any malfunction of the power tool, stop work immediately and have it repaired by an electrician.

4.1.1. Do not operate the power tool if any of the following malfunctions occur during operation:

• damage to the plug connection, cable (cord) or its protective tube;
• damage to the brush holder cover;
• fuzzy operation of the switch;
• sparking brushes on the collector, accompanied by the appearance of a circular fire on its surface;
• leakage of lubricant from the gearbox or ventilation ducts;
• the appearance of smoke or smell characteristic of burning insulation;
• the appearance of increased noise, knocking, vibration;
• breakage or cracks in the body part, handle, protective fence.

4.2. If the working tool is damaged, stop work immediately. Disconnect the power tool from the mains with the plug and replace the defective working tool.

4.3. In the event of a sudden power outage, switch off the power tool using the switch.

4.4. If voltage is detected (sensing a current), immediately turn off the power tool with a switch and disconnect it from the mains with a plug.

4.5. In the event of a fire:

4.5.1. Stop work immediately, disconnect the power tool from the mains with the plug, disconnect the electrical equipment using the workshop switch.

4.5.2. Notify all workers in the production room or at the construction site and take measures to extinguish the fire. Remember that burning electrical wiring, which is energized, should be extinguished with carbon dioxide fire extinguishers.

4.5.3. Take measures to call the direct manager of the work or other officials to the fire site.

4.6. In case of an accident, it is necessary to immediately release the victim from the impact of the traumatic factor, provide him with first (pre-medical) medical care and inform the work manager about the accident.

When releasing the victim from the action of electric current, make sure that you yourself do not come into contact with the current-carrying part or under step voltage.

5. Safety requirements at the end of work

5.1. Turn off the power tool with the switch and plug.

5.2. Clean the power tool from dust and dirt and hand it over to an electrician for storage, informing him of any problems noticed.

5.3. Clean up your workspace.

5.4. Report to the direct manager of the work about the malfunctions that occurred during the work.

5.5. Wash your face or take a shower, put your overalls and personal protective equipment in a special closet.

* In the 2003 amendments and additions to POT R M-016 - 2001 RD 153.34.0-03.150-00, the words "plug" are excluded.

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