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Instructions on labor protection during maintenance, repair and adjustment of electronic equipment and devices. Full document

Occupational Safety and Health / Standard instructions for labor protection

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Safe Operation

1. General requirements for labor protection

1.1. This instruction has been developed on the basis of the requirements of chapters 6 - 7 of the "Safety Rules for Work at Telephone and Telegraph Stations" (DNAOP 5.2.30-1.08-96)

1.2. Persons from among electrical personnel with an electrical safety group of at least III are allowed to work on servicing electronic equipment. For the sole maintenance of electronic equipment in the order of current operation and the performance of work on the basis of a permit or by order as a manufacturer, electrical personnel with an electrical safety group of at least III are allowed. Personnel with electrical safety group I under the supervision of a person from electrical personnel with a group of at least III are allowed to perform in the room where electronic equipment is located, cleaning, electric and gas welding, plumbing, repair and other work.

1.3. The general requirements for personnel servicing electronic equipment are as follows:

• persons under the age of 18 assigned to this equipment by order of the enterprise;
• not having, according to the conclusion of the medical board, contraindications to work in existing electrical installations up to 1000 V;
• who have undergone special training, briefing, internship and knowledge testing (with the issuance of a certificate and the assignment of an appropriate electrical safety group) on labor protection, PTE and PTB of electrical installations and a fire minimum.

1.4. Workers performing these works are provided free of charge with overalls and other personal protective equipment in accordance with approved standards.

1.5. The main hazard when working on electronic equipment is the danger of electric shock to a person.

1.6. Premises where electronic equipment is located, belongs to the category of premises with increased danger. Dangerous places in these rooms are:

• current-carrying parts of electronic equipment (tires, terminals, fuses, open mounting plates);
• narrow passages where it is possible to simultaneously touch the housings of electrical installations, which may be energized, and other grounded metal structures (to pipes of the heating system, water supply, ventilation ducts, gratings, reinforcement of reinforced concrete walls, etc.).

2. Labor protection requirements before starting work

2.1. Before starting work on a work permit or by order, a targeted briefing is carried out with electrical personnel. If necessary, a brief survey and verification of the readiness of personnel to perform specific work is carried out.

2.2. The following organizational measures are carried out: registration of the order, coordination of the work by the relevant services, admission to work, supervision during work, registration of breaks.

2.3. Before starting work in the order of current operation, it is necessary to familiarize yourself with the entries in the shift log, paying special attention to the existing malfunctions and the nature of the work carried out earlier.

2.4. Make sure that the overalls, safety shoes are in good condition. Put on overalls, fasten all the buttons. Inspect the main personal protective equipment, devices, tools and make sure that they are in good condition and fit (no damage, the presence of stamps indicating the timing of the next test, the distinctness of the glow of the neon indicator lamp).

2.5. Check the availability and serviceability of additional protective equipment and auxiliary devices (dielectric mats, insulating supports, fences, a set of posters, ladders and ladders). Check the availability of spare equipment (fuses, lamps, plug-in units, cable, etc.).

2.6. Check the operation of the main and emergency lighting. Check ventilation operation.

2.7. Make sure that the ground busbars and equipment connection points are in good condition.

2.8. Inspect the work site or equipment being serviced. Remove (dismantle, move away) objects that impede the necessary operations and ensure the safe location of workers relative to current-carrying parts that are energized. If necessary, install a stepladder or ladder of the appropriate height, additional insulating supports or mats.

2.9. Immediately before starting work in electrical installations, the following technical measures must be taken:

• perform the necessary shutdowns and take measures to prevent erroneous or spontaneous switching on;
• post posters "DO NOT START! PEOPLE WORK", "DO NOT START WORK ON THE LINE";
• check with the help of an indicator or a tester that there is no voltage on the current-carrying parts on which the work will be carried out (which will be grounded);
• connect portable grounding to the grounding conductor, and then to the grounded parts;
• hang out on the switching device where the disconnection was made the poster "GROUNDED";
• if necessary, secure the workplace, post a poster "WORK HERE", protect live parts that remain energized, post a poster "STOP! VOLTAGE".

2.10. Before starting work on electronic equipment in adjustment workshops and on special stands, it is necessary to conveniently place adjustable blocks, measuring instruments, a soldering iron, solder, tools, spare parts, connecting cables, documentation, and diagrams on the desktop. Turn on table lamps if necessary.

2.11. Before starting soldering work, it is necessary to turn on the exhaust ventilation.

3. Labor protection requirements during work

3.1. All work on electronic equipment should be carried out in accordance with the task, the maintenance schedule or the list of works performed in the order of current operation.

3.2. Work without removing or with partial removal of voltage must be performed while standing on dielectric mats, on insulating stands or on wooden ladders.

3.3. Carrying out repair and maintenance work, all types of maintenance, as well as measurements with portable devices, must be carried out by two persons, one of whom must have an electrical safety qualification group of at least IV, and the other - at least III.

3.4. Metal cases of measuring instruments, secondary windings and casings of transformers must be grounded.

3.5. Replacing blocks on existing equipment, as well as connecting and disconnecting portable devices to break electrical circuits, should be carried out only when the voltage is completely removed. Blocks weighing more than 30 kg should be transported on a special trolley.

3.6. Forbidden:

• allow unauthorized persons to enter the workshop, perform work not provided for by the task and not related to the maintenance of equipment or premises;
• store foreign objects, equipment and materials; block up aisles;
• use metal ladders, ladders, household rubber mats for work;
• use soldering irons and portable lamps with a supply voltage above 42 V;
• use non-standard fuses ("bugs"), conductors, lamps and other parts;
• during measurements, touch the details of circuits, resistors, equipment cases with your hands;
• smoke and use open flames.

4. Labor protection requirements at the end of work

4.1. Upon completion of work on the basis of a permit or by order, it is necessary:

• insulate the unconnected ends of the cables, close the free connectors with plugs;
• check the correct connection and sizing of cables in accordance with the diagram;
• remove grounding and warning posters;
• remove tools, measuring instruments, cable remnants, insulation waste, solder;
• install permanent guards, casings;
• if necessary, perform an insulation test;
• withdraw the brigade, close the outfit.

4.2. The equipment is turned on only after the order is closed.

4.3. Upon completion of the work carried out in the order of current operation, it is necessary:

• turn off measuring instruments, electric soldering irons, remove tools, PPE, spare parts, solder, documentation,
• wash the working surfaces of soldering tables with hot soapy water;
• make appropriate records of the maintenance performed in the shift log.

4.4. Turn off ventilation and electric lighting. Close the workshop.

5. Labor protection requirements in emergency situations

5.1. When working on electronic equipment, the following emergencies are possible:

• short circuit, fire of power cables, fire in electrical installations;
• electric shock to workers, electric arc burns;
• natural disasters and other situations not related to the operation of electrical equipment.

5.2. In an emergency, immediately: