Nuclear power plant inspection method and system
Patent Information
- Application Number
- CN202512015823.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-03-17
Smart Images
Figure CN121686590A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of nuclear power plant operation and maintenance technology, and in particular to nuclear power plant inspection methods and systems. Background Technology
[0002] The reliable operation of nuclear power plant structures, systems, components, and parts is fundamental to ensuring nuclear safety and a prerequisite for stable power generation. Emergency facilities and equipment, in particular, are crucial for the plant's ability to effectively respond to and mitigate the impact of accidents, thus ensuring operational stability. To guarantee reliable operation, regular inspections and tests of nuclear power plant structures, systems, and equipment are necessary, along with timely troubleshooting to restore them to normal operating conditions.
[0003] Currently, nuclear power plant inspections primarily rely on traditional manual inspection methods. This model uses pre-defined paper or electronic procedures to determine inspection plans and target items. However, this existing model has several shortcomings in practice: First, the delivery of inspection plans lacks timeliness and accuracy, often resulting in inspection personnel not receiving the plans promptly, leading to delays, especially in scenarios where certain equipment requires frequent inspections. Second, data collection relies excessively on the subjective actions of inspection personnel, making the collected data prone to errors and omissions. Furthermore, data recording often involves manually filling out forms, resulting in low efficiency for subsequent data processing and analysis. Third, for faulty items, delays in fault handling are common, and the lack of effective tracking methods for repair progress makes it impossible to monitor repair status in real time, potentially leading to more serious safety hazards. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to provide a method and system for nuclear power plant inspection.
[0005] The technical solution adopted by this invention to solve its technical problem is: to construct a nuclear power plant inspection method, the method comprising: S1. Based on the security level of the items to be inspected, generate a structured inspection plan according to the inspection procedure document and assign inspection personnel; S2. The inspection plan is pushed to the inspection personnel according to the preset time; S3. The inspection personnel collect and upload the status data of the items to be inspected according to the inspection plan; and verify the status data of the items to be inspected in real time according to the preset verification rules and provide prompts. S4. Analyze the status data of the items to be inspected and generate an inspection report; S5. If the status data of the item to be inspected is abnormal, generate a fault report and perform progress tracking management.
[0006] Furthermore, in step S1, if the item to be inspected needs to be experimentally verified, an experimental inspection sub-plan is generated.
[0007] Furthermore, in step S1, when the inspection procedure file is changed, the inspection plan is updated according to the updated inspection procedure file.
[0008] Furthermore, step S2 also includes: receiving confirmation feedback from the inspection personnel; if no confirmation feedback is received, triggering a feedback reminder mechanism.
[0009] Furthermore, step S3 also includes pre-setting data collection instructions for the items to be inspected, and the inspection personnel collect data according to the data collection instructions.
[0010] Furthermore, in step S3, the preset verification rules include: setting the standard format corresponding to the status data of the item to be inspected and / or setting the standard data range corresponding to the status data of the item to be inspected according to nuclear safety and risk impact.
[0011] Further, in step S4, the analysis of the status data of the item to be inspected includes: Obtain the inspection standard threshold corresponding to the item to be inspected, and compare the inspection standard threshold corresponding to the item to be inspected with the status data; obtain multiple historical data corresponding to the status data of the item to be inspected, analyze the changing trend of the status data of the item to be inspected, and generate the status result of the status data.
[0012] Further, in step S5, generating a fault report includes: classifying the abnormal status data into fault categories based on the degree of impact and risk of the abnormal status data on nuclear safety; setting corresponding fault completion deadlines and responsible persons according to the fault level, and generating a fault report; the progress tracking management includes: monitoring the repair progress of the fault report and setting an overdue reminder mechanism; after the repair is completed, associating and archiving the fault report and the inspection report.
[0013] Furthermore, the method also includes: Establish an experience feedback knowledge base for nuclear power plant failures, wherein the experience feedback knowledge base includes historical experience feedback information from one or more power plants. Based on the fault information in the fault ticket, the relevant historical experience feedback information is retrieved from the experience feedback knowledge base. The fault information in the fault ticket includes: item name, item number and / or fault type. The acquired historical experience feedback information is associated with the corresponding fault report. This invention also constructs a nuclear power plant inspection system, which includes: The inspection plan creation module is used to generate a structured inspection plan and assign inspection personnel based on the security level of the items to be inspected and the inspection procedure document. The inspection plan push module is used to push the inspection plan to the inspection personnel according to a preset time. The data acquisition module is used to verify the status data of the items to be inspected in real time according to preset verification rules and provide prompts after the inspection personnel collect and upload the status data of the items to be inspected according to the inspection plan. The results analysis module is used to analyze the status data of the items to be inspected and generate an inspection report. The fault handling module is used to generate a fault report and perform progress tracking management when the status data of the item to be inspected is abnormal.
[0014] Implementing this invention has the following beneficial effects: by formulating inspection plans based on the safety levels of items to be inspected in the nuclear power plant and promptly pushing them to inspection personnel, the timeliness of inspections is ensured; in the data collection stage, the accuracy of data collection is ensured by real-time verification of the collected status data, reducing data errors and omissions caused by human operation; by analyzing the collected status data to generate inspection reports and tracking the faults of abnormal items in the inspection reports, a complete closed loop of inspection is formed, which improves and optimizes the entire inspection process, increases the inspection efficiency of the nuclear power plant, and thus ensures the safe operation of the nuclear power plant. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a flowchart of a nuclear power plant inspection method in one embodiment of the present invention; Figure 2 This is a flowchart illustrating the association between inspection fault reports and historical experience feedback information in one embodiment of the present invention. Detailed Implementation
[0016] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0017] Figure 1 This is a flowchart of a nuclear power plant inspection method according to one embodiment of the present invention, which includes the following steps: S1. Based on the security level of the items to be inspected, generate a structured inspection plan according to the inspection procedure document and assign inspection personnel; In this step, items include structures, systems, and components or parts. The items to be inspected are the target items determined based on the actual inspection needs of the nuclear power plant. The inspection procedure document includes: the inspection cycle, inspection items, and inspection standards for the items to be inspected. Different items have different degrees of impact on nuclear safety. The safety level of the items to be inspected can be set or obtained based on nuclear safety standards, system design manuals, and other relevant documents. Different inspection requirements are formulated according to the safety level; for example, for items with high safety levels, higher inspection frequencies and stricter inspection standards are set. By acquiring the existing inspection procedure documents and safety levels of each item in the nuclear power plant and processing the data through a program, a structured inspection plan is generated. The inspection plan can include: the item name, item parameters, inspection cycle, inspection time nodes, standard range, and inspection personnel. Item parameters are specific parameters characterizing the physical condition of the item. An item can have one or more item parameters, such as the bearing temperature and vibration data of a pump. At the same time, inspection personnel allocation rules can be pre-set according to inspection requirements and the safety level of the inspected items, so that different personnel can perform different inspection items.
[0018] In some optional embodiments, if the items to be inspected require experimental verification, an experimental inspection sub-plan is generated. Specifically, for items with high safety levels to be inspected, in addition to collecting item parameters, system function verification may also be required, i.e., related experimental verification, and the experiments may not all be completed in one inspection. For example, for a certain emergency diesel engine, it is necessary not only to check whether the fuel level in the diesel engine tank meets the requirements, and whether the battery voltage, coolant level, etc. are normal, but also to conduct no-load or load tests on the diesel engine. In the embodiments of this application, for these items to be inspected that require experimental verification, a corresponding experimental inspection sub-plan is generated as one of the inspection plans. The experimental inspection sub-plan may include the item name, experiment name, inspection requirements, etc., and the inspection time of the experimental inspection sub-plan of the item to be inspected may be different from the inspection time of its item parameters.
[0019] In some optional embodiments, in step S1, when the inspection procedure file is changed, the inspection plan is updated according to the updated inspection procedure file. Specifically, the content of the inspection procedure file may change (such as adjusting the inspection cycle). The system detects whether the inspection procedure file has been updated. If it has been updated, the inspection plan is automatically updated according to the updated inspection procedure file to ensure that the inspection plan is updated in a timely manner and meets the inspection requirements.
[0020] S2. Push the inspection plan to the inspection personnel according to the preset time; In this step, the inspection time of the inspection plan is set as needed, and the inspection plan is proactively pushed to the designated inspection personnel according to the inspection time, and then pushed to their clients as needed. Preferably, inspection personnel handover rules can be set. Before pushing the inspection plan, the on-duty status of the designated inspection personnel is obtained. If the status is not on duty, the inspection plan is pushed to the new inspection personnel according to the inspection personnel handover rules. After pushing the inspection plan and before executing the inspection, the on-duty status of the designated inspection personnel can be obtained periodically. If the status is not on duty, the inspection plan is pushed to the new inspection personnel according to the inspection personnel handover rules. By proactively pushing inspection plans in a precise and clear manner, delays in inspection tasks caused by inspection personnel not receiving the plan in a timely manner can be avoided.
[0021] In some optional embodiments, step S2 further includes: receiving confirmation feedback from the inspection personnel; if no confirmation feedback is received, triggering a feedback reminder mechanism. Specifically, after the inspection plan is pushed, the inspection personnel need to click to confirm to ensure that the inspection plan has been received. If the system does not receive confirmation feedback from the inspection personnel, it will periodically remind them according to the set feedback reminder mechanism. For example, if no confirmation feedback is received one day after the inspection plan is pushed, a reminder message will be resent every other day until the inspection personnel confirm the message.
[0022] S3. According to the inspection plan, the inspection personnel collect and upload the status data of the items to be inspected, and verify the status data of the items to be inspected in real time according to the preset verification rules and provide prompts. In this step, at the start of the inspection, inspection personnel conduct on-site inspections according to the items to be inspected and the inspection requirements outlined in the inspection plan. Using handheld inspection equipment terminals, personnel collect status data for each item according to the pre-set inspection route, and add video / audio recordings of the scene as needed. The collected data is uploaded to the data system via the equipment terminal. The status data refers to raw or pre-processed data obtained directly or indirectly through sensors, instruments, or manual inspection, describing the current physical condition of the items to be inspected. The status data corresponds to the actual data of the parameters of the items to be inspected in the inspection plan, including but not limited to: vibration data (such as waveforms and spectra); temperature data; pressure data; flow data; and visual inspection data (such as images and videos recording corrosion and leakage). During data collection, selection or checkbox input methods are preferred to reduce input difficulty. For data requiring manual input, photo recognition can be used, and the captured photos are saved simultaneously. After the inspectors collect and input status data, the data system automatically verifies the validity of the status data in real time according to the preset verification rules. If the verification is invalid, a prompt will pop up to remind the inspectors whether the data was entered incorrectly. The inspectors can check according to the prompt and either re-collect and enter the data or keep the original data.
[0023] In some optional embodiments, in step S3, the preset verification rules may include: setting a standard format corresponding to the status data of the items to be inspected and / or setting a standard data range corresponding to the status data of the items to be inspected based on nuclear safety and risk impact. Specifically, inspection personnel may mistakenly collect or record data due to human error. The set verification rules may include: First, if the status data of the items to be inspected has units or a specific representation format, set its standard format to verify whether the collected status data has format errors. Second, based on the impact and risk impact of the items to be inspected on nuclear safety, a data verification model can be constructed by setting nuclear safety risk weight coefficients, and the standard data range of its status data can be dynamically set to verify whether the collected status data is within a reasonable data range. For items to be inspected with a significant impact, historical data from the same period can be compared, and stricter warning rules can be set, which may include setting a narrower standard data range; for items to be inspected with a minor impact, a wider standard data range can be set. After real-time verification according to the verification rules, a prompt will pop up for status data that does not meet the verification rules to the inspection personnel. The inspection personnel can check according to the prompt and either re-collect and enter the data or maintain the original data.
[0024] This embodiment uses preset verification rules for real-time verification. Different verification standards are set based on the degree of impact of the items to be inspected on nuclear safety, ensuring the accuracy of high-risk data items and ensuring the accuracy and validity of the collected status data, thus avoiding the use of erroneous data for subsequent analysis.
[0025] In some optional embodiments, step S3 further includes pre-setting data collection instructions for the items to be inspected, and the inspection personnel collect data according to the data collection instructions. Specifically, the data collection instructions may include collection guidelines and instructions for key item parameters. The parameters of the inspected items include not only basic location equipment parameters, but also key prompts. For example, for emergency diesel engines, additional information such as the operating voltage level and cooling water level of the diesel engine is provided, so that inexperienced personnel can complete accurate data collection simply by following the scenario-based instructions without needing to understand the complex principles of the equipment.
[0026] S4. Analyze the status data of the items to be inspected and generate an inspection report; In this step, the status data of the items to be inspected collected during the inspection process is obtained from the database. The status data is analyzed to determine whether the status data is normal, and a standardized inspection report is automatically generated. The inspection report may include: actual inspection time, actual inspection personnel, inspected items, status data details of the inspected items, status results of the inspected items, abnormal status markers, etc.
[0027] In some optional embodiments, in step S4, analyzing the status data of the items to be inspected includes: S401. Obtain the inspection standard threshold corresponding to the item to be inspected, and compare the inspection standard threshold corresponding to the item to be inspected with the status data. Specifically, the inspection standard threshold can be set differently according to the real-time operating conditions of the equipment, environmental parameters (such as temperature), and the safety level of the item; compare the status data of each item to be inspected with the corresponding inspection standard threshold. If the status data meets the standard threshold, it is initially determined to be compliant; otherwise, it is determined to be non-compliant.
[0028] S402. Obtain multiple historical data corresponding to the status data of the item to be inspected, analyze the changing trend of the status data of the item to be inspected, and generate the status result of the status data. Specifically, if the status data is determined to be non-compliant in step S401, the status result of the status data is generated as abnormal; if the status data is initially determined to be compliant in step S401, then further obtain multiple historical data of the corresponding specified period, analyze its changing trend, such as whether the data continuously exceeds the range, or whether the data is compliant but shows abnormal fluctuations over a period of time. If the trend is normal, the status result of the status data is generated as normal; otherwise, it is abnormal.
[0029] By employing a dual logic approach of threshold and trend analysis, the analysis results are made to better reflect the actual situation, resulting in high accuracy and reliability.
[0030] S5. If the status data of the item to be inspected is abnormal, generate a fault report and perform progress tracking management.
[0031] In this step, if the status data of the item to be inspected is abnormal, it means that the item has malfunctioned and needs to be handled in a timely manner, generating a corresponding fault report and tracking the progress of the fault handling.
[0032] In some optional embodiments, step S5, generating a fault ticket includes: classifying the abnormal status data into fault categories based on the degree of impact and risk of the abnormal status data on nuclear safety; setting corresponding fault completion deadlines and responsible persons according to the fault level, and generating a fault ticket; and managing progress tracking, including: monitoring the repair progress of the fault ticket and setting an overdue reminder mechanism; and archiving the fault ticket and inspection report together after repair. Specifically, in the step of generating a fault ticket, on the one hand, it is determined whether the abnormal status data directly affects nuclear safety, and on the other hand, it is determined whether the abnormal status data affects production efficiency or causes equipment performance degradation. Higher fault levels are assigned to those with greater impact, and lower fault levels are assigned to those with less impact. Corresponding fault completion deadlines and responsible persons are set according to the fault level of the abnormal status data. If the fault level is high and requires timely handling, an earlier fault completion deadline should be set. Additionally, a more experienced or relevant field / level responsible person can be assigned as needed.
[0033] In the progress tracking and management process, specifically, the timeout reminder mechanism allows for setting reminder timing and frequency as needed. This is used to issue timeout reminders for any stage of the maintenance process. The person responsible for the fault can update the maintenance progress of the fault report. Through automatic and continuous monitoring of the fault report's maintenance progress, the corresponding person responsible for the fault will be reminded if a timeout occurs, according to the set timeout reminder mechanism. After maintenance is completed, the maintenance results are linked and archived with the fault report and inspection report, completing the closed loop of the entire inspection process.
[0034] In some alternative embodiments, such as Figure 2 As shown, the method also includes: S601. Establish an experience feedback knowledge base for nuclear power plant failures, which includes historical experience feedback information from one or more power plants. Specifically, for the analysis and maintenance of faults, each nuclear power plant has an experience feedback system that records the items that have failed, the causes of the failures, the types of failures, and the solutions to the failures, forming documents as historical experience feedback information. In this embodiment of the invention, historical experience feedback information from one or more power plants can be collected to form an experience feedback knowledge base.
[0035] S602. Based on the fault information in the fault report, search the experience feedback knowledge base to obtain one or more related historical experience feedback information, wherein the fault information in the fault report includes: item name, item number and / or fault type; S603. Associate the obtained historical experience feedback information with the corresponding fault ticket.
[0036] Specifically, the fault type in a fault report can be determined manually based on experience, or it can be automatically determined based on abnormal state data. In existing experience feedback systems at nuclear power plants, retrieval is relatively simple and the results are inaccurate. In this embodiment of the invention, a combination of a large language model and retrieval enhancement generation technology is used to search the experience feedback knowledge base to obtain historical experience feedback information associated with the fault information in the fault report, i.e., historical handling experience information for similar faults. For example, if the fault report records the faulty item as the mechanical seal O-ring of the refrigeration unit compressor, with the corresponding item number 2DEL002GF, and the fault type as refrigerant leakage due to aging, a search can be performed in the experience feedback knowledge base based on one or more of the item name, item number, and fault type. Understandably, other search conditions can be added according to business needs. While large language models possess powerful reasoning and language generation capabilities and can understand user intent, they may suffer from outdated knowledge and professional blind spots. Retrieval enhancement generation (RAG) can provide the model with the latest and most reliable information from external knowledge sources, i.e., the experience feedback knowledge base. By combining large language models and retrieval enhancement generation technology, the accuracy and reliability of the retrieval results are improved.
[0037] By linking historical experience feedback information of similar equipment or faults to fault reports, the fault reports generated during inspections can be improved, providing maintenance personnel with experience references for common historical problems without the need to search across systems. This improves the speed of repairing recurring or similar faults and enhances the quality of nuclear power plant inspections.
[0038] The nuclear power plant inspection system of the present invention can be used to perform the nuclear power plant inspection method of the above embodiments. The nuclear power plant inspection system of this embodiment includes: The inspection plan creation module is used to generate a structured inspection plan and assign inspection personnel based on the security level of the items to be inspected and the inspection procedure document. Specifically, it obtains the system design manual, the security level of the items to be inspected, the inspection procedure document, etc., and automatically generates a structured inspection plan based on the security level of the items to be inspected, and assigns the corresponding inspection personnel.
[0039] The inspection plan push module is used to push inspection plans to inspection personnel according to preset times; specifically, preset times are used as needed, and automatic push is executed according to the preset times.
[0040] The data acquisition module is used to verify the status data of the items to be inspected in real time according to preset verification rules and provide prompts after the inspection personnel collect and upload the status data of the items to be inspected according to the inspection plan. Specifically, it acquires the status data of the items to be inspected collected and uploaded by the inspection personnel in real time, acquires the preset verification rules built into the module, verifies the data according to the verification rules and provides prompts. The results analysis module is used to analyze the status data of the items to be inspected and generate an inspection report. The fault handling module is used to generate a fault ticket and perform progress tracking management when the status data of the item to be inspected is abnormal.
[0041] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.
Claims
1. A method of inspecting a nuclear power plant, characterized by, Comprising: S1. generating a structured inspection plan according to an inspection procedure file and setting an inspector based on a safety level of an item to be inspected; S2. pushing the inspection plan to the inspector according to a preset time; S3. collecting and uploading state data of the item to be inspected according to the inspection plan, and checking the state data of the item to be inspected in real time according to a preset checking rule and prompting; S4. analyzing the state data of the item to be inspected to generate an inspection report; S5. if the state data of the item to be inspected is abnormal, generating a fault single and performing progress tracking management.
2. The method of claim 1, wherein, In step S1, if the item to be inspected needs to be verified by experiment, an experimental inspection sub-plan is generated.
3. The method of claim 2, wherein, In step S1, when the inspection procedure file is changed, the inspection plan is updated according to the updated inspection procedure file.
4. The method of claim 1, wherein, Step S2 further comprises: receiving confirmation feedback information of the inspector, and if the confirmation feedback information is not received, triggering a feedback reminding mechanism.
5. The method of claim 1, wherein, Step S3 further comprises: setting a data collection instruction of the item to be inspected, and the inspector collects according to the data collection instruction.
6. The method of claim 1, wherein, In step S3, the preset checking rule comprises: setting a standard format corresponding to the state data of the item to be inspected and / or setting a standard data range corresponding to the state data of the item to be inspected according to nuclear safety and risk influence.
7. The method of claim 1, wherein, In step S4, the analysis of the state data of the item to be inspected comprises: obtaining the inspection standard threshold value corresponding to the item to be inspected, and comparing the inspection standard threshold value corresponding to the item to be inspected with the state data; obtaining a plurality of historical data corresponding to the state data of the item to be inspected, analyzing the trend of the state data of the item to be inspected, and generating a state result of the state data.
8. The method of claim 1, wherein, In step S5, the generation of the fault single comprises: fault grading of the abnormal state data according to the influence degree and risk degree of the abnormal state data on nuclear safety; setting a fault completion deadline and a fault person in charge according to the fault grade, and generating a fault single; the progress tracking management comprises: monitoring the maintenance progress of the fault single, setting an overtime reminding mechanism; after maintenance is completed, the fault single and the inspection report are associated and archived.
9. The method of claim 1, wherein, The method further comprises: establishing an experience feedback knowledge base of nuclear power plant faults, the experience feedback knowledge base comprising historical experience feedback information of one or more power plants; searching the experience feedback knowledge base according to fault information of the fault single to obtain one or more associated historical experience feedback information, wherein the fault information of the fault single comprises: item name, item number and / or fault type; associating the obtained historical experience feedback information to the corresponding fault single.
10. A nuclear power plant inspection system characterized by, Comprising: an inspection plan development module for generating a structured inspection plan according to an inspection procedure file and setting an inspector based on a safety level of an item to be inspected; an inspection plan pushing module for pushing the inspection plan to the inspector according to a preset time; The data collection module is configured to, after the inspector collects and uploads the state data of the to-be-inspected item according to the inspection plan, check the state data of the to-be-inspected item in real time according to a preset checking rule and give a prompt. The result analysis module is configured to analyze the state data of the to-be-inspected item and generate an inspection report. The fault processing module is configured to, when the state of the state data of the to-be-inspected item is abnormal, generate a fault single and perform progress tracking management.