Labor protection instruction during repair work on PPC equipment

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Instructions on labor protection during repair work on PPC equipment. Full document

Occupational Safety and Health

Occupational Safety and Health / Standard instructions for labor protection

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Safe Operation

1. General requirements for labor protection

1.1. Repair work on PPC equipment is allowed for persons at least 18 years of age who have undergone a medical examination, are fit for health reasons, trained in safe working methods, have passed an examination of knowledge of labor safety requirements, have an electrical safety group of at least III and have appropriate professional training in accordance with the tariff qualification guide.

1.2. Employees carrying out repair work on PPC equipment are obliged to comply with and comply with the internal regulations established at the enterprise, i.e., observe the start and end times of work, breaks during the working day for rest and meals.

1.3. Repair work on the RRS equipment can be carried out by personnel performing operational and technical maintenance of the RRS, personnel of the emergency and preventive service and seconded to carry out specialized repair work.

1.4. In the premises where the RPC equipment is located, the following dangerous and harmful production factors are typical and present:

dangerous voltage levels in electrical circuits, the closure of which can occur through the human body;
increased level of electromagnetic radiation of very high (VHF) or ultra-high (UHF) frequencies;
increased noise level in the workplace;
increased air temperature in the workplace;
other factors determined by the geographical location of the RRS (desert, tundra, regions of the Far North, high mountains, etc.), its design (ordinary room, container version, recessed or located in a cabin on a tower, etc.).

1.5. Employees carrying out repair work on PPC equipment must be provided with special clothing, special footwear and other personal protective equipment in accordance with applicable regulations and are responsible for their correct application, use and safety.

1.6. Each employee must study the fire and explosion safety requirements, comply with them and be able to use the primary fire extinguishing equipment available in the hardware.

1.7. Each employee should be aware of the need to notify the RRS shift supervisor, his/her immediate supervisor about cases of injury to employees, about accidents and malfunctions of equipment, devices, etc., emergencies and situations.

1.8. For violation of the requirements of the instruction on labor protection, employees of enterprises are subject to disciplinary, administrative, and, in appropriate cases, material and criminal liability in the manner prescribed by current legislation.

2. Safety requirements before starting work

2.1. Prior to the start of repair work on the RRS equipment, it is necessary to obtain permission or an order from the RRL junction or terminal station. At the same time, the scope, start and end times of work must be precisely determined, and all persons responsible for the production of work must be appointed.

Receipt of equipment for repair is recorded in the journal of the shift supervisor.

2.2. When preparing the workplace for the repair team, the shift supervisor must perform the following technical measures:

turn off the supply voltage using switches and disconnectors (knife switches), take measures to prevent the supply of voltage to the place of work due to erroneous or spontaneous switching on of switching equipment;
on switches and circuit breakers, with the help of which the voltage is relieved, hang out prohibitory posters "Do not turn it on! People are working";
make sure there is no voltage. The absence of voltage up to 1000 V is checked with a factory-made voltage indicator or a portable voltmeter;
immediately before checking the absence of voltage, establish the serviceability of the device used on current-carrying parts located nearby and obviously under voltage;
when repairing RRS equipment that has traveling wave lamps (TWTs) in transmitters that use voltages above 1000 V, discharge all capacitors with a discharge rod that can retain a residual charge;
before using the arrester, check its serviceability (the strength of the connection of the metal hook with the flexible wire), as well as the strength of the connection of the flexible conductor with the grounded frame;
apply grounding. Portable grounding must first be connected to the ground, and then, after checking the absence of voltage, applied to live parts;
hang out warning and prescriptive posters, protect, if necessary, workplaces and current-carrying parts remaining energized.

2.3. The admission of the brigade is made after checking the implementation of technical measures, is carried out by the shift supervisor and is recorded in the operational log signed by the shift supervisor and the foreman.

2.4. Before admission, the shift supervisor must:

check the composition of the brigade, the adequacy of the qualifications of its members;
explain to the team where the voltage was removed from, where groundings were applied, which parts of the repaired and neighboring connections remained energized and what special conditions for the performance of work must be observed;
make sure that everything stated by him is understood by the brigade, and demonstrate to the brigade the absence of tension;
show superimposed grounds. Where grounds are not visible from the place of work, touch the live parts, having previously checked the absence of voltage with a voltage indicator or a rod. If the grounds are connected directly at the place of work, then it is not necessary to touch the live parts; hand over the workplace to the manufacturer of works.

2.5. The workplace should be equipped with a convenient and safe working tool with insulating handles necessary for each specific technological process.

3. Safety requirements during work

3.1. From the moment the brigade is admitted to work, constant supervision of it is assigned to the work foreman.

3.2. Each employee is allowed to perform only the work assigned by the immediate supervisor.

3.3. Before you start working with a hand tool, you need to make sure it is in good condition.

3.4. It is forbidden to use a tool with insulating handles, in which dielectric covers or coatings do not fit tightly to the handles, have swelling, delamination, cracks, shells and other damage. Before using a tool with insulating handles, make sure that there is no dirt, moisture or mechanical damage.

3.5. In cases where the power tool is powered by a step-down transformer, it is necessary to ground the secondary winding and the transformer case.

3.6. When performing work on removable blocks, they must be placed on a specially equipped desktop (trolley). The working table (trolley) must be mechanically strong, the metal frame must be covered with a non-conductive material, the wheels of the trolley must have rubber tires. Floors of working tables must be made of non-conductive materials.

3.7. It is not allowed to check the degree of heating of the soldering iron to the touch, take a lot of solder on the soldering iron, make sudden movements with the soldering iron in hand. During short breaks in work, soldering irons that are in working condition must be placed on a special stand. For long breaks, the soldering iron must be disconnected from the mains. Excess solder can only be removed on a special stand. When performing work related to the possibility of sunbathing or burning the eyes with solder, work must be done in safety glasses.

3.8. When building block equipment, it is allowed to remove the blocks, attach them with extension hoses and connect portable measuring instruments to them only when the power supply is turned off. Extension hoses must have male and female connectors, designed so that after they are connected, there is no possibility of touching open live parts.

3.9. The screwdriver must be selected so that its working part corresponds to the diameter of the screw and the width of the slot.

3.10. Wrenches must strictly match the dimensions of the nuts and bolts. The use of gaskets in the presence of a gap between the planes of the jaws and heads of bolts and nuts is not allowed. It is forbidden to unscrew and tighten nuts and bolts by extending wrenches with second keys or pipes.

3.11. Before using the hammer, it is necessary to check the correctness of the nozzle. Hammer heads should have a smooth, slightly convex surface without gouges, chips, potholes, cracks, burrs.

3.12. Stepladders must be used to work at heights. It is forbidden to use metal ladders, use ladders connected and docked to increase the length, and work from improvised boxes, etc.

3.13. When measuring the operating mode of the equipment or when taking readings from instruments, the possibility of personnel touching parts under voltage should be excluded. Metal cases of instruments used for measurements must be grounded.

3.14. When setting up and measuring equipment, measuring instruments should be located so as not to obstruct access to the equipment being measured.

3.15. Measuring devices can also be sources of EMF microwave radiation: a microwave generator, a measuring line, etc., therefore their outputs (unused) must be closed by matched loads. If it is necessary to disconnect the waveguides of the measuring line of the reflectometer, its generator must be turned off.

3.16. Caution should be exercised when working with electrovacuum devices (LBV).

3.17. The installation and removal of fuses is usually carried out with the voltage removed. Under voltage, but without load, it is allowed to remove and install fuses in sections of the electrical installation, in the circuit of which there are no switching devices. Under voltage and under load, it is allowed to remove and install fuses of voltage transformers and fuses of closed type in electrical installations with voltage up to 1000 V. When removing and installing fuses under voltage, it is necessary to use insulating pliers or dielectric gloves in electrical installations up to 1000 V, and if there are open fuse links and goggles (mask).

3.18. Personnel should be firmly aware that after a power failure, it can be applied to the equipment without warning, both in normal operation and in emergency cases.

4. Safety requirements in emergency situations

4.1. In the event of malfunctions of equipment, tools, injury, the employee is obliged, depending on the specific case, to stop the work performed, inform the manager about the malfunctions that have arisen, and take measures to eliminate them.

4.2. In the event of an accident with a workmate, the employee must be able to provide him with first (pre-medical) aid, call a doctor if necessary.

4.3. In case of injury, inform the management, consult a doctor.

5. Safety requirements at the end of work

5.1. Put the workplace in order; check the availability and compliance of tools, materials, keys to the premises, protective equipment; make sure that nothing is left in the repaired equipment; check that the guards and equipment sheathing are in place.

5.2. Turn off all power supply devices and measuring equipment, electric soldering iron and portable electric lamp. Remember that the protective earth wires are disconnected last.

5.3. Place devices, tools, protective devices in the places designated for their storage.

5.4. Notify management of any deficiencies found during work.

5.5. Remove and store in the designated storage area overalls and personal protective equipment.

5.6. After completion of work, the foreman must hand over the equipment to the head (senior duty officer) of the shift. The delivery of the repaired PPC equipment is recorded in the operational journal of the shift supervisor.

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