What do thermal power plant maintenance do every day?

Daily equipment management 1. Pay attention to details, do a good job in equipment defect management and special rectification. First of all, take the equipment defect management as the key point of equipment management, and take the equipment "zero defect" as the goal, and constantly strengthen the daily equipment maintenance management. Strictly implement the equipment owner responsibility system, so that the equipment in the station is managed and cleaned daily. When the equipment is inspected, the operator uses portable measuring instruments to measure the state data of the equipment; Maintenance personnel use personnel, time, project and standard to check and understand the state of each equipment; Managers regularly check and evaluate to ensure the quality of inspection. For the defects found, according to the severity, reasonable arrangements were made to eliminate the defects, which effectively avoided the occurrence of accidents. The equipment defect management system is applied in the whole plant to manage the whole process of defect discovery, entry, claim and defect elimination online. The elimination rate and timely rate of equipment defects are automatically generated by computer statistics. Secondly, strengthen the special management of equipment. Before the arrival of summer, conduct a comprehensive inspection and rectification of the ventilation and cooling equipment in the whole plant; The lightning arrester, lightning rod and grounding device were tested. Transformation of outdoor junction box, control box, panic button and rain cover; Test the low-point drainage in the production area and organize flood control and drainage exercises. Before the arrival of winter, according to the overall arrangement of cold protection and heat preservation, the heat preservation conditions of main and auxiliary equipment, pipelines, valves and public facilities should be clarified and improved, and the heat tracing system of the unit should be put into trial operation, especially the heat preservation measures for outdoor equipment, to ensure the safety of production in winter. 2, strengthen the statistical analysis of equipment indicators, improve the quality of safe and economic operation, and hold regular monthly equipment analysis meetings and operation analysis meetings attended by the competent leaders of various production units and technicians of relevant departments. Statistical analysis of operation parameters, defect elimination, equipment integrity rate and availability rate; According to the operation status and economic operation index of the equipment, analyze all kinds of abnormal conditions, grasp the problems that affect the health level and management of the equipment system in time, arrange special technical analysis and research for the major equipment defects, hidden dangers and common problems of the equipment, brainstorm, find out the reasons, and determine the "symptoms" and "prescriptions", such as solving the major equipment problems such as frequent shaft breakage of the reducer of the coal mill in the second phase and oil pressure fluctuation of the fuel pump of 1 No.1 machine this year; According to the advanced indexes and design values of similar units in the industry, the fluctuation of various indexes and technical parameters is analyzed. According to the requirements of "saving coal, competing for electricity and controlling oil dripping", we will study and formulate energy-saving and consumption-reducing measures to reduce coal consumption, water consumption and boiler fuel consumption. 3. Do a good job in fault diagnosis and condition monitoring to improve the level of equipment prediction and pre-control. In order to effectively prevent the occurrence of equipment failure, as early as 1996, our factory set up an equipment failure diagnosis room, equipped with off-line monitoring equipment such as vibration, thermal imaging, leak detection and oil, to monitor the main equipment of the whole factory, and established equipment monitoring files and equipment analysis standards, regular monitoring analysis report system and equipment monitoring website. More than 20 times of equipment defect failures are predicted every year, which plays an important role in preventing equipment failures. On the basis of off-line monitoring, an on-line vibration monitoring system was installed on the main rotating equipment in 2003 to continuously monitor the changes of vibration data, and automatically generate charts such as trend line, frequency spectrum and time domain on the computer, so that the monitoring personnel can analyze and judge the fault defects accordingly, further enhancing the timeliness and accuracy of equipment fault prediction. Through fault diagnosis and condition monitoring, many equipment defects are found in the bud. According to statistics, in 2007, there were 29 hidden dangers such as bearing damage for 8 times, rotor imbalance 14 times and mechanical loosening for 2 times. For the equipment that is not included in the online monitoring scope, the factory provides the equipment owner with a portable monitor integrating temperature, vibration and rotation speed, and transmits the daily collected data to the diagnosis and analysis server for analysis; Equipped with hand-held inspection computer for operators, it can not only measure the state parameters of equipment in real time, increase the coverage of equipment diagnosis and the timeliness and thoroughness of diagnosis analysis, but also verify whether the inspection is in place. With the continuous strengthening of fault diagnosis and condition monitoring, the equipment faults in our factory are decreasing year by year. Avoid multiple unplanned downtime of equipment and effectively avoid sudden failures. 4. Strengthen the management of oil-water lubrication and prolong the operation cycle of equipment. Lubricating oil and cooling water are the blood of equipment operation and an important guarantee for safe operation of equipment. Based on this understanding, we regard oil-water management as an important content of equipment management. The competent department at the plant level has equipped special lubrication workers, established the lubrication management network of the whole plant, formulated the oil product management system, and purchased testing equipment such as viscometer, chromatograph, ferrograph, acidity meter and volume resistivity. And use these instruments to test and analyze the lubricating oil usage of main and auxiliary equipment on a regular basis. Hiring experts to hold oil knowledge training courses has improved the application level of lubricating oil; Aiming at the problems of miscellaneous brands, wide distribution, many users and difficult management of lubricating oil, a lubricating oil warehouse was established to eliminate the oil with poor performance, identify the brand and user of each oil, and manage it by special personnel, thus solving the problems of indiscriminate use of oil, misuse of oil and waste. In recent years, our factory has newly equipped an oil purification device for important equipment, and the oil cleanliness has reached the high cleanliness of Nas7. Good lubrication management plays an escort role for the long-term safe and stable operation of equipment. 5. Ensuring the long-term safe and reliable operation of equipment is directly related to the quality of equipment maintenance, which involves many links. We have changed the past practice of only looking at the results and ignoring the process, and attached great importance to all factors related to maintenance quality. The maintenance quality is guaranteed by five passes: First, the quality of materials and spare parts is strictly controlled. We attach importance to establishing cooperative relations with large enterprises with strong technical force, reliable quality and good reputation, sign technical agreements when signing purchase and sale contracts, and do a good job in material quality inspection. The second is to formulate maintenance plans and construction measures in detail and strictly implement the examination and approval procedures. The third is to strictly control the maintenance process. Take the working mode of "prior guidance, intermediate inspection, inspection and acceptance", and sign a quality contract with the contractor before the repair according to the principle of "whoever repairs is responsible". Supervise, inspect and witness the W point and H point set in the repair process, and the unqualified ones are not allowed to enter the next working procedure. Fourth, strictly control the project acceptance and trial operation. According to the requirements of three-level acceptance, team, workshop and factory-level acceptance shall be implemented respectively. For important turning points, fill in the commissioning contact list and carry out it in strict accordance with the commissioning procedures. Only after the trial operation is qualified can it be handed over for operation. Fifth, strictly control the qualification of outsourcing engineering team. For some outsourced maintenance projects, before signing the contract, strictly review their qualifications and performance, and resolutely refuse to use unqualified teams and unqualified employees.