What are the conditions for the energized operation personnel on duty

1. Preparatory work (1) banding operation team in the acceptance of banding operation, should be based on the difficulty of the task and the degree of familiarity with the operating equipment, to determine whether the need to consult the information and site investigation. (1) access to information: refers to the livelihood section (unit), operation team and data room to understand the situation of the operating equipment. Such as the guide, ground wire specifications, the design of the safety factor and load; tower structure, gear distance; system junction, phase and mode of operation; equipment condition (guide, ground wire reinforcement, corrosion, joints, etc.) and the operating environment, in order to determine the operating method according to the content of the operation, the required work (equipment), and to make the decision on whether to deactivate the reclosing gate. If necessary, it should also: (a) calculate the guide, ground stress, or calculate the guide line tension or hanging weight; (b) calculate the no-load current, circulating current and potential difference; (c) calculating the hanging weight of the arc, and check the safety distance to the ground or to be across the object. ② site investigation: to the scene of the operation to understand the operation of a variety of equipment spacing, crossing, defective parts and the severity of the terrain, the surrounding environment, to determine the need for equipment and equipment (equipment) and so on. According to the results of the survey, to make whether or not to carry out electrified operations, the use of what kind of operating methods and the necessary safety measures and other decisions. (2) Before going to the site, the team should pay attention to the weather forecast of the local meteorological department. After arriving at the scene, should be operating within the scope of the meteorological situation (mainly refers to the wind speed, temperature, thunderstorms, frost and fog, etc.) to make a judgment on whether the operation can be carried out. (3) The person in charge of the work of the crew's state of mind and health should be well known, when found in poor condition may endanger the safety of the operators, shall not be assigned to work. (4) before the work with electricity, should be based on the operational needs of the necessary testing. ① distance detection: safety distance, crossing distance and ground distance can be used with the size of the sign of the insulated distance measuring rod, insulated distance measuring rope or non-contact distance measuring instrument for measurement. ② insulator testing: available spark gap detection device, distributed voltage detector for testing. ③Phase test: available phasor for testing. ④ current measurement: can be fixed at the top of the insulating rod clamp ammeter for measurement. ⑤ insulating tool testing: 2500V insulation shaking table, high-voltage insulation tester or surface moisture measuring instrument on the appearance of insulation testing, 2. General requirements (1) the countermeasures of electrostatic induction ① in the 220KV tower work on the ground potential electrician should wear conductive shoes; in the 330KV ~ 500KV tower work on the ground potential electrician should be wearing a full set of high-voltage static protective clothing (or shielding clothing) (including caps, clothing, trousers, shoes and gloves). (including cap, coat, pants, shoes and gloves, different). ② to withdraw from the operation of equipment and the presence of strong electric fields nearby, the metal parts of its insulator, must first be grounded, before touching with bare hands. ③ has been in a state of blackout in a single or multiple back to the same pole set up in the blackout line phase conductor or multiple back to the same pole set up in the blackout line, but a single back to the neighboring phase line or multiple back to the same pole set up in the other back to the line to the power or not yet out of the power supply, a single back to the blackout phase conductor or multiple back to the same pole set up in the blackout line must be grounded to touch with bare hands. (4) When transferring large and long metal objects by insulated transfer rope under strong electric field, it must be grounded before touching with bare hands. ⑤ In 330KV ~ 500KV transmission lines or substations placed under the car or a large size of the metal role of the machine, must be grounded before touching. (6) insulated overhead ground should be regarded as a charged body, the operator should maintain a sufficient safety distance or with an insulated rod with a grounding wire first grounded before touching with bare hands. (2) *** (equipment) the transfer of ① charged work required for the work (equipment) and materials must be used to pass insulated headless rope loop, adjacent to the charged body of the pulley and lifting point of the rope sleeve should be made of insulating material. ② headless rope loop and the charged body should try to maintain a sufficient distance. Distance from the size of the metal parts of the transfer of goods plus the size of the different voltage levels to ground (or phase-to-phase) safety distance. ③ equipment spacing is small, passing through the narrow channel site, the lower end of the headless rope loop should be fixed with ground anchors. ④ small tools and materials (metal wire should be coiled into a small coil) should be put into a tool bag to pass; longer size of the metal parts, should be fixed at multiple points on the headless rope loop for directional transmission. ⑤ transfer equipotential electrician and can not coil the metal wire (such as jumper, pre-stranded wire, etc.), can be used to transfer the rope will be parallel to the ground suspension transfer, and control rope to control the direction of its activities and the distance to the electrified body. (6) above and below the cycle of exchange to pass the heavier work equipment, old and new heavy objects should be tied to the control rope, to prevent the transmission of goods collision and accidentally touch the work in the working state of the load-bearing work (equipment) equipment. (3) the prevention of over-traction ① tighten the conductor, ground wire will cause over-traction, especially isolated file (including inter-frame bus) is more serious. Therefore, the choice of electrified tightening guide, ground line method, should consider the amount of over-traction to not exceed the design of the over-traction length shall prevail. ② replacement of tensioning insulator string, it is appropriate to use the tightening rod method, and take off the insulator string and the cross-arm or with the conductor end of the tensioning clamp coupling equipment in the bolt, the head pin, to reduce the amount of over-traction. ③ line in the conductor open end reconnection, only allowed in the multi-stage tensioning section, and should not be used to tighten the wire skid. (4) the handling of sudden climate change in the course of operations, the person in charge of the work to constantly monitor the climate change situation, such as sudden changes in the climate to jeopardize the safety of the operation, you must stop the operation in a timely manner, quickly restore the equipment to its original state, or the use of the necessary security measures. When it is too late to realize the above requirements, must immediately order the tower operators to withdraw to the ground.