-Maintenance preparation: In order to improve the quality of maintenance, ensure the progress of maintenance, and complete the maintenance task quickly and economically, we must fully prepare for the maintenance construction. For equipment overhaul and other maintenance projects that cannot be completed by itself, we should contact in advance to do a good job of maintenance outsourcing.

1. In order to complete the special projects in overhaul, especially some major special projects, it is necessary to make arrangements in a planned way as early as possible and make preparations in terms of materials and technology. Five months before the overhaul, the relevant majors should fill in the overhaul project list and send it to the department leaders for review, and the review conclusion will be used as the basis for ordering;

2. Three months before the overhaul, the deputy manager of the thermal power department will organize relevant professionals to check the preparation work before the overhaul, check the ordering and arrival of equipment, materials and spare parts related to major special projects, design and processing progress, and technical and technological preparations, and implement them item by item to ensure timely implementation;

3. 45 days before the overhaul, the maintenance supervisor shall examine and approve the overhaul item list, fill in the overhaul material application form, send it to the department head for review and approval, and then submit it to the warehouse department for purchasing materials.

2. Preparation of construction plan for major and minor repairs of equipment:

1. The major equipment overhaul construction plan is prepared by the maintenance technician 3 days before the start of construction and submitted to the department manager for approval. The maintenance supervisor prepares the overhaul control schedule and network diagram 2 days before the start of construction, coordinates the cooperation of various disciplines and outsourcing units, puts forward the overall requirements for overhaul and submits them to the department manager and the deputy general manager in charge for approval;

2. The construction plan for minor repairs to the main equipment shall be compiled by the maintenance technician and submitted to the department manager for review 1-15 days before the start of construction, in duplicate, one for each department manager and supervisor;

3. The main equipment overhaul construction plan includes overhaul items (standard items need not be listed if they have been booked). Construction progress, necessary technical measures and safety measures, quality standards, provisions on the level of sectional acceptance projects, seven specific requirements of supervision, lifting and handling facilities and site layout, labor arrangement and organizational measures, labor, materials, expenses, plans, and matters requiring cooperation from brother units, etc.

4. If any special project involves equipment change, such as equipment structure change and system change, the equipment change procedures shall be handled according to the equipment change management system;

5. The construction plan for major equipment overhaul shall not be changed casually after being approved by the vice president in charge. If it needs to be changed, it still needs to be approved by the vice president in charge. Iii. Technical disclosure before construction After the construction plan is compiled, it is necessary to organize learning, so that each maintenance team and each maintenance worker should achieve "three clear" and "eight know" and "three clear": what to fix? Why fix it? How to fix it? Eight know: know the items to be repaired and the equipment defects to be eliminated; Know the maintenance progress, know the materials and tools that should be prepared, know the relevant technical measures, know the quality standards and process methods, know the acceptance system, evaluation standards and acceptors, know the relevant safety measures, know the original measurement records, the use methods of instruments and measuring tools and the reading and writing methods of technical records. In the process of maintenance, the competent leader shall be responsible for any quality and safety problems arising from the unfinished tasks. If the task is handed over and executed at the end, the specific maintenance personnel shall be responsible for it.

iv. construction quality standards: quality standards, process methods and acceptance regulations shall be implemented in accordance with the provisions of maintenance regulations. before maintenance, professionals should set out the general quality requirements for major and minor repairs of equipment, including continuous safety days after live repair, output after repair, technical and economic indicators and major defects that should be eliminated after repair, so as to facilitate inspection and assessment.

V. Inspection of construction preparations 1. Implementation and inspection of major equipment overhaul preparations. (1) A month before the overhaul, the department manager will hold an overhaul preparation meeting to carry out the overhaul project, check the major technical measures, entrust the overhaul, test and research unit to carry out the test project, prepare and arrange the main materials and spare parts, labor force, and cooperate with relevant departments, etc. (2) Before overhaul, the supervisor shall make a comprehensive inspection of the construction preparation work of the contractor and each team of this department, such as the pre-calibration work of construction machines and tools, tools, safety appliances and facilities, measuring tools, measuring instruments and test equipment, etc., and shall prepare the technical record form, determine the spare parts drawings that should be surveyed and checked, and take measures to remedy them quickly when weak links are found, and report to the leaders; (3) A week or so before the overhaul, the department manager shall preside over an inspection meeting of overhaul preparations attended by various professions, listen to the report of the preparatory work, and make comments and instructions on all aspects of the preparatory work; (4) Four days before the overhaul, the maintenance supervisor shall organize the relevant person in charge of the contractor and the personnel of this department to check the implementation of the preparatory work, and fill in the commencement report when it is ready. Two days before the overhaul, the deputy general manager in charge approved the formal commencement of construction according to the inspection results of various preparatory work. 2, major equipment minor repairs or major auxiliary equipment overhaul preparations, by the maintenance supervisor inspection qualified rear can start.

VI. Other preparatory work before construction: 1. Before the start of overhaul, thermal test should be done well, and all necessary characteristic data should be determined to determine the technical status of the equipment before repair, so as to facilitate the analysis of the overhaul effect; 2, according to the technical requirements, materials spare parts, shipped to the scene, quality and performance after acceptance, the warranty is complete; 3. Before starting work, the operation analysis should be strengthened, and each professional supervisor should organize the equipment owner and full-time technicians to conduct an in-depth and detailed on-site inspection of the equipment to review the technical status of the equipment as a reference for maintenance.

VII. Maintenance stage (process) management. During construction, maintenance activities are highly concentrated. 1. Before the maintenance starts, the following work should be done well: (1) Do a good job in organizing the maintenance personnel, and implement the maintenance project, labor quota and planned construction period to the team, down to the team and individuals; (2) Organize the study of safety regulations, maintenance process regulations, and "Quality Standard" equipment manufacturing drawings related to construction drawing overhaul construction management homework, etc. (3), ready to repair the workplace, maintenance special machines and tools, insulation equipment, lifting machinery, electric welding machine in place, and make the necessary inspection, test (trial run), ready for lighting and construction power supply; (4), ready to repair the necessary materials, equipment and spare parts, and do a good job of final acceptance, confirm qualified; 5], equipment maintenance original record card, acceptance visa, etc. Ready; [6], carefully clean the site, do no garbage, no sundry, no pulverized coal.

2. Maintenance management in the disintegration stage: (1) Equipment disintegration inspection should be done as soon as possible, and the changes of equipment technical conditions should be analyzed in time. The disintegration inspection should be serious, careful and comprehensive, and no items should be missed. If problems are found, the reasons should be found out and the original records of disintegration measurement should be made; (2) Hold a professional disintegration analysis meeting, and make a repair and adjustment plan.

3. Inspection and management of repair and adjustment stage: (1) Repair and adjustment stage is an important stage of maintenance quality management. We should strictly adhere to quality standards for repair and adjustment, conduct intermediate quality acceptance in time, organize necessary spot checks, and handle the acceptance visa formalities in time; 2, maintenance personnel should adhere to the principle of quality first. When there is a contradiction between schedule and funds and quality, we should obey the requirements of quality and adhere to the strict and meticulous craft style; (3), strictly implement the process regulations, careful repair, careful inspection, to ensure the quality of maintenance.

4. Maintenance management in the reassembly stage: (1) Strictly prevent tools, workpieces and other sundries from being omitted inside the equipment; 2. The reassembly process should be rigorous, especially to prevent quality rework caused by sloppy work; (3), don't miss the assembly time, signs, instructions, signals, numbers, etc. are complete; (4), completes the auxiliary engine division test run and the necessary test work. All majors are required to actively cooperate and fill in the "Trial Transfer Application Form" in time. Be sure that the work has been completed before countersigning; 5], do a good job in time when the machine starts the necessary test, setting and other preparations.

5. Technical records should be strengthened to be correct, complete, timely and legible, and the situation must be truthfully reflected. The records should include technical conditions of equipment, data of measurement and test of system or structure changes, etc., and all of them should be signed by relevant personnel, and the completion drawings of thermal and electrical secondary systems should be improved.

6. Requirements for overhaul process style: Strictly implement overhaul quality standards, carefully observe disassembly process procedures, and achieve "three no's, three neat's, three no's and ten rectifications." Three noes: refers to "no oil stains, no water and no ash" during maintenance operation. Sanqi: refers to the maintenance site where "the removed parts are neatly stacked, the maintenance machines are neatly placed, and the materials and equipment are neatly stacked". Three-no-mess: refers to the maintenance site where cables are not pulled randomly, pipelines are not placed randomly, and garbage is not littered. Rectification: refers to the ten key points of rectifying the style of maintenance technology. (1), oil system maintenance do not leak oil, no vibration (no obvious vibration phenomenon); 2, valve maintenance do not leak inside and outside, switch is not dull, the opening indicator is consistent with the actual; (3), electrical switch maintenance contact is good, the action is correct, insulation is qualified; (4), pipeline rectification do horizontal flat vertical arrangement, along the slope support interval meets the requirements, paint color (insulation) to meet the requirements; 5], rotating machinery maintenance column do not leak oil, vibration conforms to the standard, no noise and fever phenomenon; [6], precision instruments, measuring tools and processed parts do not take, do not use, do not put; Once, disassembling flange screws should be symmetrical, the torque should be mastered and the teeth should be consistent; ⑻. Do not hoist when hoisting: do not hoist if the hoisting weight is not clear, do not hoist if the rope safety factor is not enough, and do not hoist if the edges and corners of the hoisted object are not wrapped properly; Levies, welders do "three no welding". Do not weld if the material process is not clear, do not weld if the counterpart cleaning is unqualified, and do not weld if the exam is unqualified; ⑽, heat preservation should be "four essentials", the heat insulation performance should be qualified, the internal and external quality should be good, there should be oil-proof measures near the bearing, and the heat preservation iron sheet should be completely refitted.

7. After the overhaul starts, we should do a good job in the disassembly inspection of the equipment as soon as possible, and analyze the changes in the technical condition of the equipment. The disassembly inspection should be serious, careful and comprehensive, and we should not miss the inspection and find out the reasons. Professional supervisors and full-time technicians should go deep into the site to find out the details and report, and hold a disassembly meeting in time after the inspection and analysis. Report in detail by the monitor. The supervisor and full-time technical personnel shall review, adjust the maintenance items according to the actual situation of the equipment, implement the maintenance methods, processes and progress, and report to the leaders in charge for approval before implementation. The manager of thermal power department shall organize relevant personnel to conduct on-site inspection and decide countermeasures for major problems found after equipment disintegration or seven items of supervision; 8. Scheduling Balance Meeting: (1) During the maintenance, the Thermoelectric Department shall hold scheduling balance meetings regularly, keep abreast of the construction quality and progress, take corresponding measures in time, reasonably organize the working procedures, and do a good job in the balanced scheduling of labor, special types of work, repair and processing, departmental projects, construction machines and tools, materials and spare parts supply, etc., with the participation of the person in charge of the contractor, technicians and relevant professionals of the company. The meeting should be brief and to the point, the whole first, then the department, and the meeting time generally does not exceed two hours; (2) The maintenance supervisor should directly grasp the key projects that affect the quality, control the progress and the whole project, analyze the completion day by day, take necessary measures to ensure the quality and progress, and implement them through dispatch meetings at all levels; (3), the professional supervisor and full-time technical personnel, should go deep into the team inspection work. During the maintenance, the monitor or working director shall meet regularly every day to systematically summarize the maintenance situation of the day, solve the balance of specific progress, labor force and equipment, put forward quality and safety requirements, arrange key projects, check technical records, and understand and coordinate the cooperative relationship between the construction unit and the department and between teams and groups. (4), the maintenance team, will be presided over by the monitor after work, the shift will arrange the tasks of the day, convey instructions from superiors, put forward key requirements and safety precautions, etc., and understand and summarize the maintenance tasks of the day and the safety plan at the after-work meeting to solve the existing problems.

9. Maintenance record work: (1) Maintenance record is the technical original data of the state of equipment before and after maintenance and the test results of maintenance. Through the analysis of maintenance, we can get the wear speed and replacement cycle of other parts of equipment, which is helpful to master the equipment situation, and find the structural material defects through analysis and research, so as to make improvement measures. Maintenance records can accumulate data, working hours and equipment consumption records for the equipment account from technical files, which is the basic data for improving technical management and doing a good job in economic accounting. Therefore, we must make maintenance records carefully, correctly and comprehensively. (2) Classification of maintenance records: ① Management records: including the clearance, size, technical status, maintenance technology, methods, components, test and appraisal results, equipment structure and system changes before and after repair; ② Administrative records: such as tool records, shift change records, drum entry and exit registration, etc. (3) Economic accounting records: such as the records of working hours, materials, expenses, repairing the old and using the waste, saving for standby, etc. consumed by each project. (3), working controller is responsible for the maintenance record of the work, to ensure that it is correct, as the technical data for acceptance; (4), monitor, team technicians, responsible for the review of the class maintenance records, important technical data should be arranged for retest, the general data measured by the working controller should also be sampled for retest, to further improve the quality of data, team technicians are responsible for the retest, sorting and registration of all kinds of maintenance records in the class; 5], sorting out all kinds of maintenance records, should be the day before the sectional acceptance, acceptance, head of the review, cylinder cover should be delivered for review 24 hours ago, the original records in the class, some according to the opinions of the acceptance, head of the copy in triplicate, as an attachment to the acceptance visa; [6], technical records shall be kept by the supervisor, summarized by professional full-time technical personnel, and written into the overhaul summary attached. Management records shall be kept by the maintenance team, and relevant economic accounting records shall be kept at two intervals; Once, all kinds of maintenance records, should use professional form record card, clean and complete, the record content should meet the requirements of the form, and shall not be altered or scribbled in the record book; Levies, maintenance record is one of the main contents of succession; ⑽, technicians should regularly or irregularly check the correctness and completeness of all kinds of maintenance records, and analyze the data at any time, in order to find abnormalities and handle them in time.

1. Maintenance personnel should adhere to the principle of "quality first", adhere to strict and meticulous process style, strictly implement process regulations, carefully check, carefully measure, and carefully repair and debug to ensure maintenance quality. The previous process should serve the next process, and the last process should be rejected if it is unqualified, so as to ensure quality;

11, technical supervision projects should be carried out seriously, professionals should support each other, unite and cooperate, provide convenience, timely sampling analysis or test. In case of equipment defects or problems found in the supervision project, the technical supervisors should report to the leaders in time, so as to judge the equipment status and put forward requirements and suggestions;

12. During the whole overhaul process, we should conscientiously implement the electrical safety work regulations to prevent personal and equipment accidents. During the disassembly and installation stages, we should strictly prevent tools and other sundries from falling inside the equipment. If they accidentally fall into the equipment, we should report to the workshop leaders in time and take measures.

13. Strengthen the management of spare parts on site: (1) Small parts removed during maintenance, such as screws and pins, shall be stored in special boxes according to the types and specifications. Some should be labeled in case of wrong installation; 2, remove the parts should be counted, scrubbed clean, neatly stacked, found that the number does not conform to, to find out the reason; (3), for precision parts such as gears, bearings, bearing shells, speed regulating structures, etc., cover them with white cloth, and put them into cabinets if possible; (4), removed the big another piece should be neatly stored in the place specified in advance; 5], need to add new parts, should be through the monitor, monitor should find out the reasons for the supplement, and verify the specifications and materials of the new parts are consistent with the original parts; [6], replace or remove the old parts should be handled in time, especially large parts, such as a wind elbow, burner, big valve after the completion of the maintenance, set.