With the continuous expansion of power supply production and operation scale, the continuous construction of production area grids, the number of maintenance and repair operations are increasing, how to control the safety risks on the job site, ensure the safety regulations are effectively implemented, and prevent personal injury and death. happened. It is an important part of the work of our company's safety supervision department. Introducing safety risk management at the electrical operation site can not only improve the safety culture of the enterprise, but also reduce the occurrence of accidents to an acceptable level. This paper mainly discusses the application of security risk management by taking electrical repair and trial work as an example for peer reference. 1. The essence of safety risk management on the electrical work site The essence of safety risk management on the electrical work site is to implement the whole process risk control of the job site. The job site is a place where the operator directly contacts the electrical equipment and performs various types of maintenance and maintenance. By adopting the methods of “ex ante risk monitoringâ€, “process supervision†and “risk control†on various job sites, by checking whether the self-safety protection of on-site workers is in place, whether personal safety skills knowledge is applied at the site, various rules and regulations are in place. Whether the site has been effectively implemented, and the identified problems are actively and effectively taken to improve and eliminate the measures to reduce or reduce personal injury and human accidents. Implementing security risk management can improve the risk awareness of managers and employees and the ability to prevent and control risks, and comprehensively identify the security risks in the production process. And use effective measures to control risks so that work safety is guaranteed. With the in-depth advancement of risk management work, the formation of a standardized safe work order, rigorous work style, and the cultivation of people-oriented, prevention-oriented safety values, thereby promoting safety management from the "strict supervision" stage to "self-management" and " The team mutual assistance phase advances, enhances the company's safety culture, and achieves the purpose of managing the enterprise with culture. 2. Procedures for risk management applied in actual work Implementing on-site safety risk management of power supply operations means implementing comprehensive, full-featured, full-process, all-round risk tracking and management in all majors (including substation, repair, wiring, power distribution, etc.). Organizational arrangements, preparation of tools and tools, formulation of plans, division of labor, analysis of risks beforehand, control of safety risks during operation (such as secondary control measures for secondary power generation), analysis and summary after operation Reduce the risk level of the operation process, reduce the occurrence of on-site violations and abnormalities, and attempt to achieve safety objectives. The programmatic workflow is very important, and the specific performances are as follows: (1) For the projects with high safety risks and difficult to control at the job site, the company set up a professional group to conduct the special ex ante risk analysis and propose corresponding countermeasures. Reduce or eliminate unsafe factors at the job site. For example, in the work with many working points and wide areas, the personnel are easy to enter the interval. While doing the analysis of the dangerous points, the work should be “one stop, two look, three check, and four operationsâ€. Do not blindly approach and touch equipment. It is necessary to see whether the power outage range and safety measures are consistent with the work ticket, and then check whether the equipment operation number is consistent with the work ticket, and work under the unmistakable situation, and the safety measures or safety facilities cannot be arbitrarily changed. At the same time, the following three measures should be clarified in the work: A organizational measures, do a good job description of the specific staff responsibility system and command logic; B technical measures, do a good job in the process of achieving the professional work objectives, work methods, Process standards, acceptance inspection methods and process control measures; C safety measures, professional protection and control measures to fully protect workers from harm and prevent equipment accidents. Finally, the work of all professional groups, to achieve staffing, equipment, and measures, if there are new circumstances, measures to change, should be carried out according to a certain process, can not be changed without authorization. (3) The next day, without prior notice to any unit and the person in charge of the on-site work, go directly to the site for supervision and inspection. (4) After the on-site supervision and inspection, the situation on the site will be reviewed in a timely manner, and the results of the review will be fed back to the unit under investigation so that everyone can get the monitoring information in time, and the problems reflected in the monitoring can be followed up and rectified in time. . (5) The monthly safety supervision department summarizes and analyzes the results of the evaluation in the monthly safety briefing. At the same time, it evaluates the safety measures of each operation process through evaluation. 3. In practice, in the work that I am engaged in, I believe that the anti-misoperation management of secondary equipment in substation is still a weak link compared to the risk control of other electric industry workplaces, and the corresponding management is not sound enough. With the updating of equipment and the continuous application of intensive equipment, the second anti-misoperation work has become more and more urgent and important. 3.1 Working ideas In the work, do the following pre-risk analysis: (1) Combining the situation of on-site safety supervision and some cases of “three mistakes†accidents occurred by State Grid Corporation in recent years, as well as the company's prevention of error status, carry out “risk assessment of secondary power failure management of substationâ€, and carry out secondary operation types. Sorting and sorting, establishing a more typical secondary anti-misoperation management risk database, and initially grasping the basic situation of secondary anti-error. (2) Analyze the contents of the secondary error prevention risk database to distinguish the risk levels. According to the frequency of on-site work and the size of the hazard, the key risk content is determined. (3) When working, technically isolate the equipment that is running or may be accidentally touched, and take prompt information while isolating. According to this idea, combined with the actual situation on the site, the site conditions are used to tailor the safety control measures for the equipment. 3.2 Targeted measures 3.2.1 Develop relevant risk control measures (1) At the same time as the development of on-site safety measures, the secondary risk management risk database will be sorted out. Establish a “Typical Library for the Identification and Control of Safety Risks in Secondary Workplacesâ€, and incorporate them into the scope of safety technical measures according to the content of the operation. (2) For the second job, the requirements must be based on the specific work content. Conduct pre-exploration work. According to the on-site investigation, the person in charge of the protection (remote action) professional team will make a second safety measure ticket and pass the test for special review before it can be used on site. (3) Before starting work, the person in charge of the work shall conduct safety technical disclosure to the members of the work team based on the information of the typical risk database. The licensors participate together and arrange secondary security measures based on the content of the work, the situation of the balance and the ticket for secondary safety measures. (1) For the secondary screen with only one protection and measurement and control device in the power failure maintenance screen, for relay protection and remote operation, the operation screen only needs to be safely isolated. The site is operated in accordance with the “Second Safety Measures Ticketâ€. (2) For the secondary screen with only one set of protection and measurement and control devices in the live operation protection screen, the relay protection and remote operation must be carried out on the terminal. At this time, it is not only necessary to safely isolate the operation screen. The second safety measure ticket is "worked." (3) For multiple protection devices on the same screen, when the terminal needs to be removed during the operation, the “secondary safety measures ticket†should be used, and the “secondary anti-error measures†should be adopted to isolate the non-working segment terminals to prevent mistakes. bump. (4) In the case of secondary operation, the operation of the protection screen and the remote screen air switch shall be opened. When the “switching operation ticket†is executed, the “secondary error prevention measures†shall be adopted to isolate the non-operational item technology. (5) When the operating personnel and maintenance personnel put in and stop the protective platen, the “secondary error prevention measures†taken at the site shall be checked twice when the “turning operation ticket†is executed. Ensure the correctness of the implementation. 3.2.3 Implementation effect (1) Solved the key problems and problems in the actual work. a. Through the data of the review, it is possible to systematically and purposefully formulate a secondary anti-misoperation control plan, and implement the second anti-misoperation work in stages according to the level of risk. Finally, a more systematic secondary anti-error measures were implemented, which improved the safety of the second work on site. b. Through the establishment of anti-misoperation measures for multiple sets of protection devices on the same screen, the operation equipment and its pressure plate are prevented from being mis-isolated by using the setting of “running equipment†anti-missing cover, which reliably avoids misoperation or accidental collision during work. Accidents caused by other running intervals. c. Standardize the layout of the secondary safety measures on site, so that the site safety measures are arranged beautifully and practically, which changes the previous rough and general safety measures, improves the operability and pertinence of secondary safety and error prevention, and prevents “ The three mistakes occurred. (2) The company eliminated the occurrence of personal injury and personnel management responsibility accidents by implementing safety risk control. At the same time standardized the construction of on-site civilization. Establish a good corporate image. (3) Improve the ability of the site personnel to "I will be safe." Through on-site supervision, inspection, and organization of local personnel training, the awareness of self-protection of workers has been strengthened. USB Power Sockets, USB Charger, USB Adaptor, Charging USB Ports, USB Quick Charger NINGBO COWELL ELECTRONICS & TECHNOLOGY CO., LTD , https://www.cowellsockets.com
(2) Each working team should report the job site location, job content, job manager and contact number on the second day in advance. For the operation points that are considered to be more complicated after assessment and have higher risk of on-site safety, the safety supervision department shall conduct pre-examination supervision, mainly check whether the personnel arrangement in the operation plan, the on-site safety measures can meet the requirements of the next day operation, and whether the preparation of the tools is sufficient, Whether the vehicle is deployed or not.
3.2.2 On-site process control