Power plant after-maintenance re-identification information system platform

Abstract

The invention belongs to the technical field of power plant maintenance and operation, and particularly relates to a post-maintenance re-identification information system platform for a power plant. After a worker in charge completes the maintenance work, a test transfer application is initiated at the first time by using a field terminal or a web version system, and an operation engineer carries out test transfer preparation work in advance according to the actual state of a unit and the required conditions of equipment, and directly approves and arranges equipment which can be scheduled into a planned shift. And a worker in charge receives a piece of corresponding short message information, carries out work arrangement according to the time required by the short message, marks reasons for equipment which cannot be subjected to trial transfer, and gives predicted trial transfer time. According to the invention, the randomness and the scattered property of the test work after repair are changed and are strictly listed in the whole overhaul plan, so that the digital and fine control of the test after the nuclear power unit refueling overhaul is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of power plant maintenance and operation, and in particular relates to a post-maintenance re-identification information system platform for a power plant. Background Art

[0002] In order to verify that the equipment functions and operating levels have reached the original design functions, the equipment related to power plant safety and quality should be verified from the perspective of system operation to see whether the various functions meet the requirements after normal maintenance and before formal commissioning. Re-identification is an important means of inspecting the quality of maintenance. This stage is also the golden period for discovering defects. If re-identification tests are not carried out, defects will not be discovered in time, and the equipment will operate with defects, which will seriously lead to shutdowns and reactor shutdowns, resulting in huge economic and safety costs. Therefore, re-identification is an important way for power plants to generally inspect the quality of power plant equipment maintenance.

[0003] During the overhaul of a nuclear power plant, more than a thousand items need to be re-qualified and tested after equipment maintenance. The implementation of re-qualification projects involves multiple disciplines such as operation, maintenance, and planning, and spans many interfaces such as isolation managers, operators, on-site operation personnel, maintenance professional coordination, work supervisors, QC, etc. It is the focus of overhaul work and an important part of overhaul quality control. Usually, the re-qualification work after maintenance is managed by temporary deposit or stamping of paper licenses. In the actual implementation process, because it involves multiple links such as operation engineers, isolation managers, main control operators, and work supervisors, the re-qualification is relatively random, and the contradictions in the re-qualification link are particularly prominent. The following problems exist:

[0004] 1. There are too many interfaces and they are inefficient, which easily leads to the clustering of re-identification work in the main control room. Long queues often appear in the main control room or isolation office, resulting in unnecessary loss of working time;

[0005] 2. The tickets are generally tested immediately after being deposited on the same day, and the risk analysis of the re-identification project cannot be predicted and prepared in advance;

[0006] 3. If paper applications are used, the equipment maintenance progress information cannot be shared on the platform, which is not conducive to the planning department to grasp the equipment maintenance progress;

[0007] 4. The maintenance project trigger system generally only implements front-end triggering for the implementation of maintenance projects, and there is no back-end planning control for the trial operation of equipment after maintenance. Due to the extensive management method, it is impossible to effectively track the re-identification work after equipment maintenance, and there is a lack of closed-loop control measures;

[0008] 5. The circulation and manual control of paper licenses are not conducive to the statistics and trend tracking of overhaul re-evaluation results. Paper licenses are often lost or difficult to find during circulation. Summary of the invention

[0009] For the overhaul of the unit refueling, the operation and maintenance department of the power plant often starts to formulate a detailed maintenance plan several months in advance. For each equipment that needs to be repaired, the specific time to start the maintenance, the maintenance period and whether post-repair testing is required must be determined in advance. During the entire plan execution process, the actual end point of the equipment maintenance work is relatively vague, and there are many uncertainties as to when the conditions for re-identification work will be met, which leads to the post-repair testing of the equipment often becoming a random and scattered work, which to a certain extent will undermine the seriousness and executability of the overhaul plan. The purpose of the present invention is to provide a post-repair re-identification information system platform for power plants, and the significance lies in how to change the randomness and scatteredness of the post-repair test work, and strictly include it in the entire overhaul plan, so as to realize the digitalization and refined control of the post-repair test of the nuclear power unit refueling overhaul.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is:

[0011] A post-maintenance appraisal information system platform for power plants. After the work supervisor completes the maintenance work, he / she shall immediately initiate a trial run application using an on-site terminal or a web-based system. The operation engineer shall prepare for the trial run in advance based on the actual status of the unit and the required conditions of the equipment. The equipment that can be scheduled shall be directly approved and scheduled into the planned shift. The work supervisor shall receive a corresponding SMS message and arrange the work according to the time required by the SMS. For the equipment that cannot be trial run, the reason shall be noted and the estimated trial run time shall be given.

[0012] Step 1: The person in charge of the work completes the maintenance work at the overhaul site with a work permit;

[0013] Step 2: The person in charge of the work or his agent sends the completion information through the electronic platform and makes an appointment for re-evaluation;

[0014] Step 3: The requalification manager and the transporter receive the requalification trial transfer application;

[0015] Step 4: The requalification manager of the operation overhaul team discusses the requalification implementation window with the nuclear island and conventional island operators and publishes the schedule;

[0016] Step 5: The person in charge of the work receives the SMS of the re-identification trial transfer scheduling information and contacts the master controller on duty during the window time;

[0017] Step 6: During the test window, the person in charge organizes the re-identification personnel to arrive and contact the main control;

[0018] Step 7: The on-duty master operator checks the SMS information or other trial transfer credentials of the person in charge, notifies the isolation manager, and organizes re-identification;

[0019] Step 8: If the test is qualified, the main control operator confirms the qualification on the re-qualification platform; if the test is unqualified, the main control operator confirms the unqualified on the re-qualification platform;

[0020] Step 9: If the test is qualified, the quarantine manager receives the qualified test information in the quarantine system and organizes the invoice settlement; if the test is unqualified, the quarantine manager receives the unqualified test information in the quarantine system and organizes re-quarantine and invoice; the re-evaluation manager tracks the circulation process and coordinates and intervenes when problems arise;

[0021] Step 10: The requalification manager tracks the requalification report and matches it with the overhaul progress.

[0022] The beneficial effects achieved by the present invention are:

[0023] The verification test was effective: the new method of the electronic management system platform for power plant equipment was adopted to improve work efficiency by more than 50%. Compared with the traditional offline process, the digital process successfully transforms the scattered and random nature of the post-overhaul test process into a complete and executable plan, and can more accurately control the process from the completion of equipment maintenance to the qualified trial run, thereby ultimately assisting power plant personnel to avoid the impact of a single piece of equipment on the recommissioning of the entire system. Combined with the powerful data statistical capabilities of the digital platform, power plant personnel can analyze these data to reversely optimize the human and material arrangements of the post-overhaul test group during the overhaul, and ultimately further improve the efficiency and safety of the post-overhaul test of the unit. The following effects have been achieved through the technical improvements of this post-maintenance re-evaluation information system platform:

[0024] Optimize the re-identification process steps, reduce the steps of depositing tickets, copying and stamping before re-identification; predict and predict the occurrence and execution of re-identification, change the management method, and improve the effectiveness and reliability of risk analysis; improve the efficiency of re-identification, and effectively control the flow rules of the re-identification process in various main control positions; through the management of the re-identification trial work plan after maintenance, realize the planning and scheduling of re-identification tasks and precise control; by triggering and scheduling 2-3 days in advance, avoid the clustering of re-identification and seek a more reasonable test window; use the SMS trigger function to reduce the direct communication between the work leader and the main control operator, reduce Reduce the number of times staff members need to retrieve and return tickets, and reduce the risk of epidemic transmission; synchronize the qualified information of equipment re-qualification to the work ticket system to realize the process control of re-qualification information flow and quarantine manager settlement; through the platform and the work ticket main and sub-ticket association fields, it is convenient to clean up the unfinished sub-tickets when the main quarantine is lifted, and realize the linkage of re-qualification trial transfer, work ticket settlement and overhaul progress; through the statistical report function, the qualified rate of overhaul re-qualification and the overall trial transfer completion progress are tracked in real time, and the back-end control and closed-loop management of the maintenance process are realized, and the lifting of the main quarantine of the overhaul and the quality control of the first unqualified rate are realized. Make the re-qualification process paperless, and achieve environmental protection and energy saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The figure is a schematic diagram of a post-maintenance identification information system platform for a power plant. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Adhere to the concept of innovative development, solve the characteristics and existing problems of the existing re-qualification process, sort out and formulate a good re-qualification process, develop an electronic management system platform for power plant equipment re-qualification, and further improve labor productivity. Combine information technology with the safe and stable operation of the power plant, integrate the research results of the overhaul re-qualification process optimization into the electronic platform, and use the electronic platform to realize the application, approval and scheduling of re-qualification trial work. Adopt a refined and electronic management model, simplify the work process, reduce personnel interfaces, and realize the planning and rationality of the re-qualification work after equipment maintenance, achieving multiple goals at one stroke, greatly improving work efficiency, especially the efficiency of post-repair testing during overhaul.

[0028] The post-repair re-evaluation information system platform is developed in a workflow manner and has four main approval nodes or system states: application for trial run, approval for trial run, and trial run results (trial run completed and qualified and trial run completed but unqualified). See Table 1 for details.

[0029] Table 1 Digital process of re-identification platform

[0030]

[0031] After the work leader completes the maintenance work, he / she shall immediately initiate a trial run application using the on-site terminal or web version of the system. The operation engineer can prepare for the trial run in advance based on the actual status of the unit and the required conditions of the equipment. For equipment that can be scheduled, the person in charge of the work will directly approve and schedule it into the planned shift. The person in charge of the work will receive a corresponding SMS message and arrange the work according to the time required by the SMS. For equipment that cannot be trial run, the reason shall be noted and the estimated trial run time shall be given. The person in charge of the work can query this information simultaneously, truly achieving information symmetry and sharing. During the workflow approval and circulation process, the post-maintenance identification information system platform also realizes the following functions:

[0032] Realize the standardization of the re-qualification task in multiple positions such as maintenance, planning, transportation, and master control operators; realize the ability to trigger and schedule the re-qualification task 2-3 days in advance according to the completion progress; realize the work plan management function of the re-qualification trial after equipment maintenance according to the re-qualification schedule; realize the SMS trigger and notification function; synchronize the equipment re-qualification qualified information and related fields to the work ticket management system to realize the linkage of re-qualification trial, work ticket settlement and overhaul progress; realize the statistical report function. Provides an information interface with the operation and maintenance system of the smart power station.

[0033] Taking the overhaul of a single piece of equipment that requires post-repair testing as an example, further analysis is conducted from the perspectives of the work leader and the post-repair test team.

[0034] Work supervisor: The overhaul plan stipulates the maintenance period of the equipment, that is, the specific time when the equipment is expected to be completed for maintenance can be known in advance from the plan, and the work supervisor also carries out the maintenance work in accordance with this plan. When the work supervisor completes the maintenance work within the plan, the operation department needs to conduct tests, but whether the tests can be carried out immediately or completed within the validity period of the license, the work supervisor cannot know in advance, which may cause the work supervisor to "run around".

[0035] Post-repair test group: Before the overhaul, the equipment that needs to undergo the second and third types of post-repair tests has been mastered, but in the actual overhaul process, the order of post-repair tests on these equipment cannot be planned in advance. When the person in charge of the work completes the maintenance work and holds the license, and comes to the post-repair test group, the operating personnel can begin to verify the trial run conditions of the equipment, such as temporary control changes, whether there are other tasks on the equipment, etc., and usually many people in charge of the work conduct the trial run together, resulting in low efficiency of one-by-one inspection. For equipment that can be tested on the same day, the post-repair test can be completed, but for equipment that does not meet the conditions on the same day, it needs to be rearranged according to the status of the unit, which results in a lot of ineffective communication.

[0036] Through the analysis of the post-overhaul test process of nuclear power units, it is found that strengthening the communication efficiency and precise control of the post-overhaul process in the period between the completion of equipment maintenance and the start of post-overhaul testing has become a key point. The interface efficiency is improved, and computer-aided management is used for key steps, and the precise control of the entire re-qualification process is improved through digital platform means.

[0037] In order to make the whole management process and re-qualification process run efficiently, the post-repair re-qualification information system platform realizes the control of the following key points: the re-qualification in overhaul is circulated and information is exchanged and circulated among the isolation manager, operator, operation site personnel, maintenance professional coordination, work supervisor, QC and other personnel. Still taking the overhaul of a single equipment that needs post-repair testing as an example, the overall picture of the flow of this platform is more intuitive, mainly in chronological order, taking into account the logical order, the steps are as follows:

[0038] Step 1: The person in charge of the work completes the maintenance work at the overhaul site with a work permit;

[0039] Step 2: The person in charge of the work or his agent sends the completion information through the electronic platform and makes an appointment for re-evaluation;

[0040] Step 3: The requalification manager and the transporter receive the requalification trial transfer application;

[0041] Step 4: The requalification manager of the operation overhaul team discusses the requalification implementation window with the nuclear island and conventional island operators and publishes the schedule;

[0042] Step 5: The person in charge of the work receives the SMS of the re-identification trial transfer scheduling information and contacts the master controller on duty during the window time;

[0043] Step 6: During the test window, the person in charge organizes the re-identification personnel to arrive and contact the main control;

[0044] Step 7: The on-duty master operator checks the SMS information or other trial transfer credentials of the person in charge, notifies the isolation manager, and organizes re-identification;

[0045] Step 8:

[0046] If the test is qualified, the main control operator confirms the qualification on the requalification platform;

[0047] If the test fails, the master operator confirms the failure on the requalification platform;

[0048] Step 9:

[0049] If the test is qualified, the quarantine manager receives the test qualification information in the quarantine system and organizes the ticket settlement;

[0050] If the test fails, the quarantine manager receives the test failure information in the quarantine system and organizes re-quarantine and invoice;

[0051] The requalification manager tracks the flow process, coordinates and intervenes when problems arise;

[0052] Step 10

[0053] The requalification manager tracks the requalification report to match the overhaul progress.

[0054] According to the post-repair re-identification process example, the main interfaces of the post-repair re-identification information system platform are described as follows.

[0055] 1) Initiate a trial transfer application

[0056] When the person in charge of the work or the person preparing the work has finished the on-site work, he or she can initiate the application by scanning the QR code at the on-site self-service machine or entering the WCA number on the computer terminal, fill in relevant information such as whether the work ticket requires TCA, trial conditions, etc., and enter the mobile phone number to receive the trial schedule information. After clicking to confirm the application submission, the system pops up a window to remind the person in charge of the work "Confirm that the on-site work has been completed and the ticket holder is prohibited from continuing the work", and the process initiation ends.

[0057] 2) Review and approve the application for trial transfer:

[0058] The requalification manager and the operation engineers of the nuclear island and conventional island for overhaul shall approve the commissioning application according to the current system status of the unit, and arrange the equipment requalification work into the morning, middle and night shift work tasks of a certain day in the system in order according to the workload. If there is an error, the application can be canceled before approval. After the approval is completed, the system will automatically trigger a text message to the person in charge of the work through the filled mobile phone number to remind him of the commissioning scheduling information. At the same time, the operation engineer can also note whether the equipment commissioning requires TCA and the required commissioning conditions, so that the person in charge of the work can prepare the relevant procedures in advance.

[0059] 3) Evaluation of trial run results:

[0060] The person in charge of the work shall, according to the SMS prompt, go to the main control to carry out re-inspection and trial run at the designated shift on the designated date. If the trial run is qualified, the isolation completion ticket will be issued, and the process will be completed. The main control operator will enter "qualified" on the platform. If the equipment trial run fails, the main control operator will enter "unqualified" on the platform, and the isolation will be restored before the invoice is issued for inspection.

[0061] 4) Status in the isolation system:

[0062] After the operator inputs the re-qualification test results, the quarantine manager can receive the qualified or unqualified test information from the re-qualification platform in the quarantine system. The pass light indicates that the person in charge of the work will settle the bill or re-organize the quarantine and re-issue the permit.

Claims

1. A post-maintenance appraisal information system platform for power plants, characterized by: After the work leader completes the maintenance work, he / she shall immediately initiate a trial run application using the on-site terminal or web-based system. The operation engineer shall prepare for the trial run in advance based on the actual status of the unit and the required conditions of the equipment. The equipment that can be scheduled shall be directly approved and included in the planned shift. The work leader shall receive a corresponding SMS message and arrange the work according to the time required by the SMS. For equipment that cannot be trial run, the reason shall be noted and the estimated trial run time shall be given.

2. The power plant post-maintenance re-evaluation information system platform according to claim 1 is characterized by: Step 1: The person in charge of the work completes the maintenance work at the overhaul site with a work permit; Step 2: The person in charge of the work or his agent sends the completion information through the electronic platform and makes an appointment for re-evaluation; Step 3: The requalification manager and the transporter receive the requalification trial transfer application; Step 4: The requalification manager of the operation overhaul team discusses the requalification implementation window with the nuclear island and conventional island operators and publishes the schedule; Step 5: The person in charge of the work receives the SMS of the re-identification trial transfer scheduling information and contacts the master controller on duty during the window time; Step 6: During the test window, the person in charge organizes the re-identification personnel to arrive and contact the main control; Step 7: The on-duty master operator checks the SMS information or other trial transfer credentials of the person in charge, notifies the isolation manager, and organizes re-identification; Step 8: If the test is qualified, the main control operator confirms the qualification on the re-qualification platform; if the test is unqualified, the main control operator confirms the unqualified on the re-qualification platform; Step 9: If the test is qualified, the quarantine manager receives the test qualification information in the quarantine system and organizes the ticket settlement; If the test fails, the quarantine manager receives the test failure information in the quarantine system and organizes re-quarantine and invoice; the re-qualification manager tracks the circulation process and coordinates and intervenes when problems arise; Step 10: The requalification manager tracks the requalification report and matches it with the overhaul progress.

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