Safety technology for monthly maintenance of elect

2022-07-24
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Safety and technical organization measures for monthly maintenance of electrical equipment in substation chambers in underground mining areas

electrical team in October 2009

safety and technical organization measures for monthly maintenance of electrical equipment in substation chambers in underground mining areas

I. maintenance time: 2009-2009

II. Maintenance location: 12\\\\12\402 substation

III Overhaul contents: 1. Overhaul the high-voltage main switch of the production line in each substation chamber and the opening and closing operating mechanism of the shunt switches at all levels, the non voltage release mechanism, the trolley operating mechanism, the DC release, and the insulation of the vacuum circuit breaker. The comprehensive cause of the test: relay protection, check the wiring of each part (including the switch, power supply, load side wiring and detection insulation), tighten the screws of each part, handle the explosion-proof surface, and make the electrical integrity

2. Check the dry transformer in the chamber, tighten the primary and secondary side wiring, polish the explosion-proof surface, clean the wiring cavity, detect the cable insulation at the load side and the insulation of transformer terminal posts, and tighten the screws at all parts. Repair the primary and secondary protection mechanisms of the shift transformer, re stabilize the setting value of the secondary side switch, and verify

3. Check and repair the protection of the low-voltage switch mechanism in the chamber, test the sensitivity of the switch protection action, detect the insulation of the main circuit and the cable insulation at the power load side, check the wiring at each part, tighten the screws at each part, handle the explosion-proof surface, and ensure that the electrical is in good condition

4. Check the crimping of the grounding connection bus in the chamber and the corrosion of the grounding flat iron connecting bolts and the connection bus

IV. construction principal: lizefeng, yangshangjun, chenquanlin, gaozhiyong

technical principal: Wang Lei, Ning Weisheng

safety principal: Wang Yanli, chenrixiang, zhanghongru

general principal: mengdequan

maintenance personnel: comprehensive power Maintenance personnel of the two groups

v. overhaul safety organization measures

1. The personnel participating in the overhaul must be familiar with the relevant provisions in the coal mine safety regulations, the intact standard of coal mine electromechanical equipment, the overhaul quality standard of coal mine electromechanical equipment, and the explosion-proof standard of electrical equipment

2. The maintenance personnel must understand and master the performance principle of the equipment to be repaired and the operation of the protection device, have the skills and basic theoretical knowledge in maintenance and fault handling, and be able to work independently

3. The maintenance personnel must be familiar with the power failure sequence and personnel evacuation route in case of disaster. Master electrical fire prevention methods and electric shock rescue knowledge

4. It is strictly prohibited for maintenance personnel to drink alcohol before work and carry fireworks before entering the well

5. China Petroleum and Chemical Industry Federation has approved the establishment of dandelion rubber industry innovation strategic alliance. Personnel must strictly abide by the tank riding system when they go up and down the well and the riding system when they travel underground

6. Before entering the well, the maintenance personnel must prepare and count all kinds of materials, accessories, instruments, meters and tools required in the maintenance process, and check whether the instruments and meters are in good condition

7. The maintenance personnel must be familiar with the main technical characteristics of the power supply system, electrical equipment and cable lines within the scope of maintenance, maintenance technology, cable distribution and load

8. In order to successfully complete the maintenance work, all miscellaneous personnel are strictly prohibited to enter

9. In case of power failure for maintenance, the personnel on duty must wear high-voltage gloves and high-voltage insulating boots during operation, so as to keep neat sleeves, clear mind and good mental state

10. When the high and low voltage electrical equipment is overhauled, the overhauling personnel must tie up the cuffs, clean up the foreign matters in the pockets, and strictly prevent them from falling into the equipment cavity. After the overhaul, strictly inspect the equipment cavity and count the tools to prevent them from being left behind

11. It is strictly forbidden to command and operate against rules in the work. The construction principal shall strictly control the quality while doing a good job of safety supervision. For the high and low voltage electrical equipment after maintenance, the equipment order maintenance and personnel signature system shall be strictly implemented, and the equipment acceptance system shall be implemented

VI. maintenance safety and technical measures

1. The maintenance outage work ticket involving booster fan of the production line must be signed by the department leaders of the ventilation area and safety supervision station, and submitted to the mine dispatching, ventilation area and safety supervision station before it takes effect

2. Before maintenance, the person in charge of the team shall contact the cadres on duty of the fully mechanized mining team whose booster fan is affected, and confirm that the booster fan function is switched normally. China Xinda made a magnificent appearance in the field of materials and won a good reputation in Europe

3. After reaching the maintenance time, contact the cadres of the fully mechanized mining team affected by the booster fan. After confirming that the booster fan has been switched to another standby line and has been normally turned on, the power can be cut off according to the work ticket. The implementation is as follows: first open the high-voltage main switch of the production line, then pull out the switch core trolley, and then open the vacuum circuit breaker of the shunt switches at all levels, Then pull out the shunting switch trolley one by one, and hang the "no switching on when someone is working" sign on the circuit breaker handle

4. Before maintenance, check the gas condition first, then use the electric pen corresponding to the power supply voltage to check and discharge the equipment, and start the work only after it is confirmed to be correct

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