A nuclear power plant equipment-based operational risk analysis system and method

Abstract

The present application belongs to the field of nuclear power operation evaluation, and particularly relates to a nuclear power plant equipment-based operation risk analysis system and method. The system comprises: a data storage module for storing equipment operation risk analysis basic data; a retrieval module for receiving inputted equipment data information to be analyzed, matching and analyzing the equipment operation risk analysis basic data stored in the data storage module, and outputting basic data of the equipment to be analyzed; an analysis module for receiving the basic data of the equipment to be analyzed outputted by the retrieval module, performing extraction, logical judgment, data correlation identification, automatically and intelligently analyzing operation risk, and outputting risk analysis results; an output module for transmitting the risk analysis results to a general display module; and the general display module for visually displaying the risk analysis results. The present application can effectively shorten the process of risk analysis and evaluation, improve accuracy, enhance risk control of on-site work, and help improve unit operation performance.

Description

Technical Field

[0001] This invention belongs to the field of nuclear power operation assessment, specifically relating to a nuclear power plant equipment-based operation risk analysis system and method. Background Technology

[0002] Currently, when executing work orders in nuclear power plants, plant staff conduct operational risk analysis and assessment for each work order. This requires manual preparation of relevant operational risk analysis sheets and mitigation measures. Furthermore, different operations on the same equipment may pose the same operational risks, yet corresponding operational risk analysis sheets still need to be prepared based on the work order, resulting in unnecessary repetitive workload for staff. When equipment fails, plant operators mainly rely on operating procedures to stabilize the unit's status, but there is no relevant guidance on the potential operational risks brought about by equipment failure. Operators need to analyze the specific equipment, which is time-consuming, labor-intensive, and may lead to incomplete risk analysis.

[0003] Different equipment in a nuclear power plant generates different operational risks, and the assessment and formulation of operational risk analysis requires consulting a large number of documents, drawings, logic, and technical specifications, which are not timely and complete.

[0004] Specifically, the current operational risk analysis of nuclear power plants mainly has the following problems: 1. Inefficient analysis model and prominent problem of repetitive work: Risk analysis is often driven by "work orders" or "work tasks". For different operations of the same equipment, the operational risks are highly similar, resulting in a large amount of repetitive work.

[0005] 2. Fragmented Information: Key information required for analysis (such as technical specifications, interlocking logic, system drawings, and operating procedures) is scattered across different documents and systems, requiring analysts to manually search and integrate information across platforms. This is time-consuming and prone to omissions.

[0006] 3. High dependence on personal experience: The quality of risk identification and assessment largely depends on the experience and skill level of personnel. Inconsistencies and uncertainties in the analysis results lead to a lack of stability and standardization in the quality of risk analysis.

[0007] 4. High pressure on fault response time: When important equipment fails, the operating procedures only stipulate the stable state of the unit. There is a lack of rapid and systematic analysis and guidance for the potential derivative risks caused by the fault, which may delay risk mitigation decisions.

[0008] Therefore, there is an urgent need to develop an operational risk analysis method applicable to nuclear power plant equipment to solve the above problems. Summary of the Invention

[0009] The purpose of this invention is to provide a nuclear power plant equipment-based operational risk analysis system and method, which shifts from "task-driven" discrete analysis to "equipment-driven" risk analysis. It focuses the risk analysis on the equipment itself, establishes a comprehensive and structured risk knowledge file for each piece of equipment that may introduce operational risks, and uses database and intelligent technology to build a risk analysis support system that can be called in real time and learn autonomously. This can effectively shorten the risk analysis and assessment process, improve accuracy, enhance risk control in on-site work, and help improve unit operation performance.

[0010] Technical solution to achieve the purpose of this invention: A nuclear power plant equipment-based operational risk analysis system, the system comprising: The data storage module is used to store basic data for device operation risk analysis; The retrieval module is used to receive the input data information of the device to be analyzed, match and analyze it with the basic data of device operation risk analysis stored in the data storage module, and output the basic data of the device to be analyzed. The analysis module is used to receive the basic data of the device to be analyzed from the retrieval module, extract the basic data of the device to be analyzed, make logical judgments, identify data associations, perform automatic and intelligent analysis of operational risks, and output risk analysis results. The output module is used to receive the risk analysis results output by the analysis module and transmit the risk analysis results to the overall display module. The overall display module is used to receive risk analysis results and present them intuitively.

[0011] Furthermore, the system also includes a data link module for information transmission between the device's operational risk analysis system and other systems.

[0012] Furthermore, the other systems include a production information system and a document information system; the risk analysis results of the output module are transmitted to the production information system through the data link module; the information in the production information system and the document information system is transmitted to the data storage module through the data link module.

[0013] Furthermore, the information in the file information system includes device-associated file information.

[0014] Furthermore, the basic data for equipment operation risk analysis includes a list of equipment with potential operational risks, equipment attribute information, equipment associated file information, and equipment associated risk information.

[0015] Furthermore, the risk analysis results include: operational risk points under different working conditions, risk mitigation and response measures, and risk precautions.

[0016] Furthermore, the equipment attribute information includes: attribute fields and basic information corresponding to each attribute field; the attribute fields include: basic equipment identification information and equipment feature tag information; the basic equipment identification information includes: equipment code, equipment name, and the system to which the equipment is located; the equipment feature tag information includes: critical sensitive equipment, potentially critical sensitive equipment, primary loop pressure boundary, secondary loop vacuum boundary, and equipment safety level.

[0017] Furthermore, the equipment risk association information includes: risk scenario information and risk ontology information; the risk scenario information includes: applicable conditions and failure modes; the risk ontology information includes: risk points, risk analysis and countermeasures.

[0018] Furthermore, the device-related file information includes: relevant technical specification entries, associated drawings and procedures, and upstream source items.

[0019] A method for analyzing operational risks of nuclear power plants based on equipment, the method comprising: Step 1: Input the data information of the device to be analyzed through the retrieval module, call the basic data of device operation risk analysis stored in the data storage module, match and analyze the input data information of the device to be analyzed, and output the basic data of the device to be analyzed. Step 2: The analysis module extracts, performs logical judgments, and identifies data associations of the basic data of the device to be analyzed output by the retrieval module, automatically and intelligently analyzes the operational risks, and outputs the risk analysis results. Step 3: Transmit the risk analysis results to the overall display module through the output module. The overall display module intuitively displays the risk analysis results, showing the operational risk points, risk mitigation and response measures, risk precautions, etc. under different working conditions. Step 4: The output module and the data link module transmit information. The risk analysis results are transmitted to the production information system through the data link module, and are organically integrated with the relevant modules of the production information system. Step 5: The production information system, document information system and data link module transmit information. The latest information and experience feedback from the production information system and document information system are sent back to the data storage module through the data link module. Step 6: The data storage module performs autonomous learning and data iteration on the data, and continuously updates it.

[0020] The beneficial technical effects of this invention are as follows: 1. This patent provides a method for analyzing the operational risks of nuclear power plants, which shifts the analysis of operational risks from the traditional "task-driven" discrete analysis to a "equipment-driven" standard risk analysis method. It moves the focus of risk analysis forward and fixes it on the equipment itself, pre-establishes a comprehensive and structured risk knowledge file for each piece of equipment that may introduce operational risks, and uses database and intelligent technology to build a risk analysis support system that can be called in real time and learn autonomously.

[0021] 2. This patent provides a nuclear power plant equipment-based operation risk analysis system, including the relevant elements and basic data scope and format of the operation risk analysis system; it defines the design modules and corresponding functions of the operation risk analysis system; it clarifies the data information transmission process of the operation risk analysis system; and it clarifies the operation risk analysis process of the operation risk analysis system.

[0022] 3. The present invention provides a method for analyzing operational risks of nuclear power plants based on equipment, which can be applied to the assessment of operational risks in the daily operation of nuclear power units. During the daily operation of nuclear power units, it can effectively shorten the risk analysis and assessment process and effectively guide the on-site risk assessment work, reduce the burden on front-line personnel, improve the risk control of on-site work, and help improve the performance of unit operation. Attached Figure Description

[0023] Figure 1 A block diagram of a nuclear power plant equipment-based operation risk analysis system provided by the present invention; Figure 2 This is a diagram illustrating the output results provided in an embodiment of the present invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025] This invention provides a nuclear power plant equipment-based operational risk analysis system, comprising: a data storage module, a retrieval module, an analysis module, an output module, and an overall display module.

[0026] The data storage module is used to store basic data for device operation risk analysis; The retrieval module is used to receive the input data information of the device to be analyzed, match and analyze it with the basic data of device operation risk analysis stored in the data storage module, and output the basic data of the device to be analyzed. The analysis module receives the basic data of the device to be analyzed from the retrieval module, extracts the basic data of the device to be analyzed, makes logical judgments, identifies data associations, performs automatic and intelligent analysis of operational risks, and outputs risk analysis results. The output module is used to receive the risk analysis results output by the analysis module and transmit the risk analysis results to the overall display module; The overall display module is used to receive risk analysis results and to present them intuitively.

[0027] The system of the present invention also includes a data link module, which is used for information transmission between the equipment's operational risk analysis system and other systems.

[0028] Other systems include production information systems and document information systems.

[0029] The risk analysis results from the output module are transmitted to the production information system via the data link module, where they are organically integrated and displayed with the on-site work execution carriers; information from the production information system and the document information system is transmitted to the data storage module via the data link module.

[0030] The information in the file information system includes device-associated file information.

[0031] The basic data for equipment operation risk analysis includes a list of equipment with potential operational risks, equipment attribute information, equipment-related file information, and equipment-related risk information.

[0032] The risk analysis results include: operational risk points under different working conditions, risk mitigation and response measures, and risk precautions.

[0033] The determination of the list of equipment with potential operational risks is based on the following: reviewing all equipment in the nuclear power plant systems, assessing the potential for equipment failures to cause unit shutdown, outages, power fluctuations, degradation of primary / secondary loop pressure boundaries, and degradation of safety margins, generating assessment results, and determining the list of equipment with potential operational risks based on the assessment results.

[0034] The device attribute information includes: attribute fields and the basic information corresponding to each attribute field. The attribute fields include: basic device identification information and device feature tag information.

[0035] The specific details of each attribute field and its corresponding basic information are as follows: Basic equipment identification information includes: Equipment code: The number or code of the equipment.

[0036] Equipment Name: The Chinese name of the equipment.

[0037] System to which the device belongs: The code and name of the system to which the device belongs.

[0038] Equipment feature label information includes: critical sensitive equipment, potentially critical sensitive equipment, primary loop pressure boundary, secondary loop vacuum boundary, equipment safety level, etc.

[0039] Equipment risk-related information includes: risk context information and risk ontology information.

[0040] Risk scenario information includes: Applicable situations: Including maintenance work and equipment failure, it is divided into categories such as "preventive or corrective maintenance" and "equipment failure". The potential operational risks and risk prevention measures are different for different applicable situations.

[0041] Failure Mode: Identify the specific failure mode of the equipment (e.g., internal leakage, failure to operate, malfunction, jamming, power loss, etc.). Analyze the equipment failure modes. Different equipment failure states have different impacts on unit operation and require different risk measures. The technical specifications, related drawings, and procedures for each piece of equipment also differ.

[0042] Risk ontology information includes: Risk points: Describe the abnormal state or event that the equipment will directly cause under specific circumstances and failure modes (e.g., "causing loss of main pump shaft seal injection flow" or "causing high water level in steam generator").

[0043] Risk analysis and countermeasures: For each risk point, list specific compensation measures, operational points, monitoring parameters and withdrawal conditions.

[0044] Device-related file information includes: The technical specification items involved are: directly related operational constraints and action requirements.

[0045] Related drawings and procedures: system diagrams, logic diagrams, and operation or maintenance procedure numbers.

[0046] Upstream source items: power and gas sources upstream of the equipment, and the equipment's instrumentation and control cabinet.

[0047] In one specific implementation, the data storage module stores basic data for equipment operation risk analysis. This basic data includes a list of equipment with potential operational risks, equipment attribute information, equipment-related file information, and equipment-related risk information. The retrieval module receives input data about the equipment to be analyzed and performs matching analysis with the list of equipment with potential operational risks, equipment attribute information, equipment-related file information, and equipment-related risk information stored in the data storage module. It then outputs basic data about the equipment to be analyzed, including equipment attribute information, equipment-related file information, and equipment-related risk information. The analysis module receives the equipment attribute information, equipment-related file information, and equipment-related risk information output by the retrieval module and analyzes these data. Information is extracted, logically judged, and data is associated and identified to automatically and intelligently analyze operational risks, outputting risk analysis results. These results include operational risk points under different operating conditions, risk mitigation and response measures, and risk precautions. The output module receives the risk analysis results from the analysis module and transmits them to the overall display module and the data link module. The overall display module receives the risk analysis results and provides a visual representation. The data link module facilitates information transmission between the equipment's operational risk analysis system and other systems, including the production information system and the document information system. The risk analysis results from the output module are transmitted to the production information system via the data link module. Information from the production information system and the document information system is transmitted to the data storage module via the data link module.

[0048] This invention also provides a method for analyzing operational risks of nuclear power plants based on equipment, specifically including the following steps: Step 1: Input the data information of the device to be analyzed through the retrieval module, call the basic data of device operation risk analysis stored in the data storage module, match and analyze the input data information of the device to be analyzed, and output the basic data of the device to be analyzed. Step 2: The analysis module extracts, performs logical judgments, and identifies data associations of the basic data of the device to be analyzed output by the retrieval module, automatically and intelligently analyzes the operational risks, and outputs the risk analysis results. When conducting automated and intelligent analysis of operational risks, it should be carried out separately for different scenario conditions. Step 3: The risk analysis results are transmitted to the overall display module through the output module. The overall display module intuitively displays the risk analysis results, such as... Figure 2 As shown, it displays the operational risk points, risk mitigation and response measures, and risk precautions under different working conditions; Step 4: The output module and the data link module transmit information. The risk analysis results are transmitted to the production information system (such as the nuclear power plant work order system) through the data link module, and are organically integrated with the relevant modules of the production information system. Step 5: The production information system, document information system and data link module transmit information. The latest information and experience feedback from the production information system and document information system are sent back to the data storage module through the data link module. Step 6: The data storage module performs autonomous learning and data iteration on the data, and continuously updates it.

[0049] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. All contents not described in detail in the present invention can be derived from existing technologies.

Claims

1. A nuclear power plant equipment-based operational risk analysis system, characterized in that, The system includes: The data storage module is used to store basic data for device operation risk analysis; The retrieval module is used to receive the input data information of the device to be analyzed, match and analyze it with the basic data of device operation risk analysis stored in the data storage module, and output the basic data of the device to be analyzed. The analysis module is used to receive the basic data of the device to be analyzed from the retrieval module, extract the basic data of the device to be analyzed, make logical judgments, identify data associations, perform automatic and intelligent analysis of operational risks, and output risk analysis results. The output module is used to receive the risk analysis results output by the analysis module and transmit the risk analysis results to the overall display module. The overall display module is used to receive risk analysis results and present them intuitively.

2. The nuclear power plant equipment-based operational risk analysis system according to claim 1, characterized in that, The system also includes a data link module for information transmission between the equipment's operational risk analysis system and other systems.

3. The nuclear power plant equipment-based operational risk analysis system according to claim 2, characterized in that, The other systems include a production information system and a document information system; the risk analysis results of the output module are transmitted to the production information system through the data link module; the information in the production information system and the document information system is transmitted to the data storage module through the data link module.

4. The nuclear power plant equipment-based operational risk analysis system according to claim 3, characterized in that, The information in the file information system includes device-associated file information.

5. A nuclear power plant equipment-based operational risk analysis system according to claim 1, characterized in that, The basic data for equipment operation risk analysis includes a list of equipment with potential operational risks, equipment attribute information, equipment associated file information, and equipment associated risk information.

6. The nuclear power plant equipment-based operational risk analysis system according to claim 1, characterized in that, The risk analysis results include: operational risk points under different working conditions, risk mitigation and response measures, and risk precautions.

7. A nuclear power plant equipment-based operational risk analysis system according to claim 5, characterized in that, The equipment attribute information includes: attribute fields and basic information corresponding to each attribute field; the attribute fields include: basic equipment identification information and equipment feature tag information; the basic equipment identification information includes: equipment code, equipment name, and the system to which the equipment is located; the equipment feature tag information includes: critical sensitive equipment, potentially critical sensitive equipment, primary loop pressure boundary, secondary loop vacuum boundary, and equipment safety level.

8. A nuclear power plant equipment-based operational risk analysis system according to claim 5, characterized in that, The equipment risk association information includes: risk scenario information and risk ontology information; risk scenario information includes: applicable conditions and failure modes; risk ontology information includes: risk points, risk analysis and countermeasures.

9. A nuclear power plant equipment-based operational risk analysis system according to claim 5, characterized in that, The associated file information of the equipment includes: relevant technical specification entries, associated drawings and procedures, and upstream source items.

10. A method for equipment-based operational risk analysis in nuclear power plants, employing the equipment-based operational risk analysis system for nuclear power plants as described in any one of claims 1-9, characterized in that, The method includes: Step 1: Input the data information of the device to be analyzed through the retrieval module, call the basic data of device operation risk analysis stored in the data storage module, match and analyze the input data information of the device to be analyzed, and output the basic data of the device to be analyzed. Step 2: The analysis module extracts, performs logical judgments, and identifies data associations of the basic data of the device to be analyzed output by the retrieval module, automatically and intelligently analyzes the operational risks, and outputs the risk analysis results. Step 3: Transmit the risk analysis results to the overall display module through the output module. The overall display module intuitively displays the risk analysis results, showing the operational risk points, risk mitigation and response measures, risk precautions, etc. under different working conditions. Step 4: The output module and the data link module transmit information. The risk analysis results are transmitted to the production information system through the data link module, and are organically integrated with the relevant modules of the production information system. Step 5: The production information system, document information system and data link module transmit information. The latest information and experience feedback from the production information system and document information system are sent back to the data storage module through the data link module. Step 6: The data storage module performs autonomous learning and data iteration on the data, and continuously updates it.

Images