1. Do not drink alcohol before going to work. Do not do anything unrelated to your job at work, and strictly abide by relevant rules and regulations.
2. During the repair of explosion-proof electrical equipment, no more than two people must work together during the power-on test. Strict implementation of the power transmission and delivery system is strictly prohibited.
3. For maintenance parts and parts, qualified products that meet the standards shall be used, and self-made products that have not been legally produced and have not been tested and inspected shall not be used as accessories.
4. Explosion-proof electrical equipment can not be used under the explosion after repair.
5. Prepare the necessary materials, accessories, tools, test equipment and other equipment before repair.
6. Before using, pulling, hanging, and transporting explosion-proof electrical equipment, the appliance to be used should be inspected.
7. Before the explosion-proof electrical equipment is inspected, the integrity of the explosion-proof equipment, the explosion-proof casing and the explosion-proof surface must be thoroughly inspected, and the inspection situation should be recorded in detail.
8. Clean up the dirty, rusted and painted parts of the explosion-proof equipment.
9. Strictly implement the regular maintenance system, underground explosion-proof electrical equipment should be regularly raised to the ground for overhaul.
10. When disassembling and installing explosion-proof electrical equipment, special tools are applied, and it is strictly forbidden to disassemble and operate illegally.
11. After the explosion-proof electrical equipment is disassembled, the explosion-proof surface shall be properly placed and stored. If it does not meet the explosion-proof requirements, it must be treated. For the explosion-proof surface that is contaminated or partially treated, the treated roughness and explosion-proof clearance shall comply with the explosion-proof. According to the standard regulations, the explosion-proof surface should be passivated and coated with anti-rust oil.
12. After repairing damaged contacts, contacts, coils, arc dampers and other parts, the quality standards should be met to ensure safe use, and various parts that cannot be repaired must be replaced.
13. The setting of the fuse and protection device should be consistent with the performance of the electrical equipment. It is strictly forbidden to replace the fuse with a fuse.
14. When repairing electrical equipment, it is not allowed to arbitrarily change the terminal sequence and marking on the original equipment; the replaced components must be qualified, fixed firmly, and the wiring should be reasonable.
15. The mechanical transmission part of the explosion-proof electrical equipment after repair shall be flexible, and the contact of the knife gate, the main circuit dynamic and static contact and the auxiliary contact shall meet the specified requirements, the internal wiring is firm and there is no looseness, and the electrical protection action is sensitive and reliable.
16. Before the explosion-proof electrical equipment is repaired, the explosion-proof cavity must be inspected in detail. There should be no residual thread, parts and other debris, and the main explosion-proof cavity of the explosion-proof equipment and the explosion-proof cavity of each junction box should be clean and free of debris.
17. When applying anti-rust paint and protective paint to explosion-proof electrical equipment, do not contaminate the explosion-proof surface.
18. Inspect the test for the explosion-proof performance of the equipment according to the specified items, and record the main parameters. If the requirements are not met, find the cause, repair and test it until it is qualified. After the electrical test is passed, a product maintenance certificate is issued, signed and sealed into stock.
19. Implement the responsibility system for overhaul of explosion-proof electrical equipment, who is responsible for maintenance and who is responsible for it, and strictly inspect according to the inspection standards for explosion-proof equipment.
20. Electrical equipment that cannot be guaranteed to be safely used or seriously damaged after repair shall be scrapped, and the scrapped mark shall be sent to the designated place.
twenty one. After each explosion-proof electrical equipment has been completed, the maintenance records and test reports shall be compiled.
twenty two. Explosion-proof electrical equipment should be numbered and managed to create repair files. The repair file shall indicate the repair equipment number, model number, maintenance date, inspection content, replacement major zero, parts, safety protection device setting value, selected fuse current (wire) rated current value, test conditions and maintenance The contents of the signature, etc.
twenty three. Check tools, instruments, materials, clean the working environment, and leave the workplace after the electrical equipment is stopped.
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