A method, system, electronic device and storage medium for equipment management of a nuclear power unit

Abstract

The present invention relates to a method, system, electronic device and storage medium for nuclear power unit equipment management, including: identifying all single-failure trip and reactor trip equipment; setting multiple fault analysis dimensions for the single-failure trip and reactor trip equipment; grading each fault analysis dimension to obtain its corresponding several levels and setting corresponding level coefficients; identifying the fault mode corresponding to the single-failure trip and reactor trip equipment and obtaining the level of the corresponding fault analysis dimension; obtaining the product of the corresponding level coefficients according to the levels of all fault analysis dimensions as the elimination priority number of the fault mode; obtaining the elimination priority number of the single-failure trip and reactor trip equipment according to the elimination priority number of the fault mode; obtaining the elimination priority numbers of all single-failure trip and reactor trip equipment, sorting them, and eliminating or mitigating the single-failure trip and reactor trip equipment that meet the preset conditions. Implementing the present invention can greatly reduce the occurrence probability of unplanned shutdown and reactor trip events and improve the operation and maintenance performance.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power, and more specifically, to a method, a system, an electronic device, and a storage medium for managing nuclear power unit equipment. Background Art

[0002] Unplanned shutdown and reactor trip (hereinafter referred to as unplanned shutdown) will seriously affect the economic benefits and operating performance of nuclear power plants, and also pose challenges to nuclear safety. Since 2007, through statistics and analysis, it can be found that unplanned shutdown and reactor trip are often closely related to the failure of single-failure trip devices (SPV devices). The proportion of unplanned shutdown and reactor trip caused by the failure of SPV devices exceeds 70%. The failure of SPV devices will directly lead to the occurrence of shutdown and reactor trip events, and pose challenges to the turbine generator control and regulation system, reactor control and protection system, etc. of the power plant, having a significant impact on economy and safety.

[0003] However, there are many SPV devices in nuclear power plants. For example, the number of SPV devices in a single unit of a pressurized water reactor nuclear power plant exceeds 1000. Although theoretically, if the on-site space and cost are not considered, the possibility of eliminating and transforming SPV devices exists, but the operation and maintenance resources of the power plant are limited, and improvement measures cannot be proposed for all SPV devices. Therefore, how to determine the priority of eliminating SPV devices and identify those SPV devices that pose the greatest threat to the safe and stable operation of the power plant, so as to be able to concentrate the power plant resources to give elimination and mitigation measures to these SPV devices first has become a technical issue. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method, a system, an electronic device, and a storage medium for managing nuclear power unit equipment.

[0005] The technical solution adopted by the present invention to solve its technical problems is to construct a method for managing nuclear power unit equipment, including the following steps:

[0006] S1. Identify all single-failure trip devices in the nuclear power unit equipment;

[0007] S2. Set multiple fault analysis dimensions in the fault analysis process of the single-failure trip devices;

[0008] S3. Classify each of the fault analysis dimensions according to a preset evaluation criterion to obtain its corresponding several levels, and set corresponding level coefficients for the several levels respectively;

[0009] S4. Identify the fault mode corresponding to the single-failure trip device, and obtain the level of the fault analysis dimension corresponding to the fault mode;

[0010] S5. Obtain the corresponding grade coefficients according to the grades of all the failure analysis dimensions, and obtain the product of all the grade coefficients as the elimination priority number of the failure mode;

[0011] S6. Obtain the elimination priority number of the single - failure trip - reactor device according to the elimination priority number of the failure mode;

[0012] S7. Obtain and sort the elimination priority numbers of all the single - failure trip - reactor devices to obtain the single - failure trip - reactor devices whose elimination priority number sorting meets the preset conditions for elimination or mitigation.

[0013] Preferably, in the nuclear power unit equipment management method of the present invention, the multiple failure analysis dimensions include:

[0014] The intervention degree corresponding to the intervention process after the failure of the single - failure trip - reactor device;

[0015] The occurrence degree corresponding to the failure occurrence frequency of the single - failure trip - reactor device;

[0016] The detectability corresponding to the failure early - identification process of the single - failure trip - reactor device;

[0017] The management effectiveness corresponding to the management process after the failure of the single - failure trip - reactor device.

[0018] Preferably, in the nuclear power unit equipment management method of the present invention, in step S3, each of the failure analysis dimensions is classified according to a preset evaluation criterion to obtain its corresponding several grades, including:

[0019] Classify the intervention degree according to the corresponding equipment degradation. After the equipment is degraded, it can be repaired under full power, requires load reduction for repair, can be subjected to operation intervention, and cannot be intervened in time to obtain its corresponding first grade, second grade, third grade, and fourth grade;

[0020] Classify the detectability according to whether the failure can be found through alarm, whether the failure can be found through patrol inspection, whether the failure can be found through calibration or test, and whether there is no effective means to find the failure to obtain its corresponding first grade, second grade, third grade, and fourth grade;

[0021] Classify the occurrence degree according to the number of times of causing shutdown / reactor trip / degradation being 0 times, 1 time, 2 times, and more than 2 times to obtain its corresponding first grade, second grade, third grade, and fourth grade;

[0022] The management effectiveness is classified into corresponding first, second, third, and fourth levels according to management by regular replacement, management by regular renovation, management by calibration / test, and management without effective preventive maintenance means.

[0023] Preferably, in the nuclear power unit equipment management method of the present invention, in the step S3, the corresponding level coefficients are set for the several levels, including:

[0024] The level coefficients are set for the first, second, third, and fourth levels corresponding to the intervention degree, the detectability, the occurrence degree, and the management effectiveness, respectively, and increase in the increasing order of the levels.

[0025] Preferably, in the nuclear power unit equipment management method of the present invention, in the step S6, the elimination priority number of the single-failure trip-and-shutdown equipment is obtained according to the elimination priority number of the failure mode elimination priority number; including:

[0026] When the number of failure modes corresponding to the single-failure trip-and-shutdown equipment is unique, the elimination priority number corresponding to the unique failure mode is taken as the elimination priority number of the single-failure trip-and-shutdown equipment.

[0027] Preferably, in the nuclear power unit equipment management method of the present invention, in the step S6, the elimination priority number of the single-failure trip-and-shutdown equipment is obtained according to the elimination priority number of the failure mode elimination priority number; further including:

[0028] When the number of failure modes corresponding to the single-failure trip-and-shutdown equipment is two or more, the elimination priority numbers corresponding to all its failure modes are obtained, and the maximum value among them is taken as the elimination priority number of the single-failure trip-and-shutdown equipment.

[0029] Preferably, in the nuclear power unit equipment management method of the present invention, in the step S7, the elimination priority numbers of all the single-failure trip-and-shutdown equipment are obtained and sorted to obtain the single-failure trip-and-shutdown equipment whose elimination priority number sorting meets the preset conditions for elimination or mitigation, including:

[0030] Sorting according to the numerical values of the elimination priority numbers of the single-failure trip-and-shutdown equipment, and obtaining the single-failure trip-and-shutdown equipment corresponding to the largest 20% of the numerical values for elimination or mitigation; and / or

[0031] The method further includes:

[0032] Obtaining the equipment categories of all the single-failure trip-and-shutdown equipment, and performing the steps S2 to S6 for each category of single-failure trip-and-shutdown equipment.

[0033] Obtain the elimination priority numbers of single-failure trip and dump devices for all categories and sort them to obtain the categories of single-failure trip and dump devices whose elimination priority number sorting meets the preset conditions for elimination or mitigation.

[0034] The present invention also constructs a nuclear power unit equipment management system, including:

[0035] A first identification unit for identifying all single-failure trip and dump devices in the nuclear power unit equipment;

[0036] A fault analysis dimension setting unit for setting multiple fault analysis dimensions in the fault analysis process of the single-failure trip and dump devices;

[0037] A level setting unit for grading each of the fault analysis dimensions according to a preset evaluation standard to obtain its corresponding several levels;

[0038] A level coefficient setting unit for setting corresponding level coefficients for the several levels respectively;

[0039] A second identification unit for identifying the fault modes corresponding to the single-failure trip and dump devices and obtaining the levels of the corresponding fault analysis dimensions of the fault modes;

[0040] A first calculation unit for obtaining the corresponding level coefficients according to the levels of all the fault analysis dimensions and obtaining the product of all the level coefficients as the elimination priority number of the fault mode;

[0041] A second calculation unit for obtaining the elimination priority number of the single-failure trip and dump device according to the elimination priority number of the fault mode;

[0042] An execution unit for obtaining the elimination priority numbers of all the single-failure trip and dump devices and sorting them to obtain the single-failure trip and dump devices whose elimination priority number sorting meets the preset conditions for elimination or mitigation.

[0043] The present invention also constructs a computer storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the nuclear power unit equipment management method as described in any one of the above.

[0044] The present invention also constructs an electronic device, including a memory and a processor;

[0045] The memory is used for storing a computer program;

[0046] The processor is used for executing the computer program to implement the nuclear power unit equipment management method as described in any one of the above.

[0047] Implementing a nuclear power unit equipment management method, system, electronic device, and storage medium of the present invention has the following beneficial effects: it can greatly reduce the occurrence probability of unplanned shutdown and reactor trip events and improve the operation and maintenance performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0049] Figure 1 is a program flowchart of an embodiment of a nuclear power unit equipment management method of the present invention;

[0050] Figure 2 is a logic block diagram of an embodiment of a nuclear power unit equipment management method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the drawings.

[0052] As Figure 1 shown, in an embodiment of a nuclear power unit equipment management method of the present invention, the following steps are included: S1. Identify all single-failure trip and reactor trip equipment in the nuclear power unit equipment; S2. Set multiple fault analysis dimensions in the fault analysis process of the single-failure trip and reactor trip equipment; specifically, for all SPV equipment in the nuclear power technology equipment, since the failure of the SPV equipment is closely related to the unplanned shutdown and reactor trip of the nuclear power unit, then the analysis based on all SPV equipment can truly reflect the occurrence probability of the unplanned shutdown and reactor trip. Conduct a fault analysis on the obtained SPV equipment and set its fault analysis dimensions. There can be multiple fault analysis dimensions, and different fault analysis dimensions can reflect the reliability of the SPV equipment from different angles. For example, confirm whether the SPV equipment has had some faults or whether the faults have occurred repeatedly from the dimension of historical data analysis. Reflect the resolvability of the fault from the dimension of whether the fault can be solved. The selection of its dimensions can be set according to various modes of fault analysis.

[0053] S3. Classify each of the fault analysis dimensions according to a preset evaluation standard to obtain its corresponding several levels, and set corresponding level coefficients for the several levels; specifically, classify the set various fault analysis dimensions. For example, for the dimension of historical data analysis, set levels based on the historical data that has occurred. For example, no occurrence in the historical data is one level, few occurrences is one level, and many occurrences is one level. In fact, its classification can be understood as classifying the influence degree of the fault analysis dimension on the SPV equipment. And set a level coefficient for each level. This coefficient can be set as needed.

[0054] S4. Identify the fault mode corresponding to the single-failure trip-and-dump device, and obtain the level of the fault analysis dimension corresponding to the fault mode. Specifically, identify all the fault modes of the SPV device, and analyze each fault mode in terms of the fault mode analysis dimension to obtain the level of each corresponding fault mode analysis dimension.

[0055] S5. Obtain the corresponding level coefficient according to the level of all the fault analysis dimensions, and obtain the product of all the level coefficients as the elimination priority number of the fault mode. Specifically, after obtaining the level of each fault mode analysis dimension corresponding to the fault mode, the corresponding level coefficient of each fault analysis dimension can be obtained, and the product of all the level coefficients corresponding to the fault mode is taken as the elimination priority number of the fault mode. It can be understood that the product of all the level coefficients can determine whether the fault mode needs to be solved or is the top priority to be solved.

[0056] S6. Obtain the elimination priority number of the single-failure trip-and-dump device according to the elimination priority number of the fault mode. Specifically, after obtaining the elimination priority number of the fault mode of the SPV device, the elimination priority number corresponding to the SPV device can be obtained according to the elimination priority number of the fault mode. Because in some cases, there may be more than one fault mode corresponding to the SPV device. At this time, the elimination priority number of the SPV device needs to be determined based on the elimination priority numbers of multiple fault modes.

[0057] S7. Obtain the elimination priority numbers of all the single-failure trip-and-dump devices and sort them to obtain the single-failure trip-and-dump devices whose elimination priority number sorting meets the preset conditions for elimination or mitigation. Specifically, sort the obtained elimination priority numbers of all the SPV devices, and confirm the most-needed SPV devices for elimination or mitigation according to the sorting result for operation. Ultimately, it aims to reduce or avoid the unplanned shutdown of nuclear power plant equipment.

[0058] Optionally, the multiple failure analysis dimensions include: the intervention degree corresponding to the intervention process after the occurrence of the single failure trip and reactor trip equipment failure; the occurrence degree corresponding to the failure occurrence frequency of the single failure trip and reactor trip equipment; the detectability corresponding to the failure early identification process of the single failure trip and reactor trip equipment; and the management effectiveness corresponding to the management process after the occurrence of the single failure trip and reactor trip equipment failure. Specifically, for the setting of the failure analysis dimensions, the intervention degree can be defined from whether the equipment can be intervened in time to avoid shutdown and reactor trip after the occurrence of the degradation of this type of equipment after the failure mode occurs, that is, corresponding to a failure analysis dimension, and its grading can be set according to the intervention difficulty. The occurrence degree can be defined from whether this type of equipment has experienced degradation events or shutdown and reactor trip due to failures in the power plant operation history and whether it occurs repeatedly, that is, corresponding to another failure analysis dimension. Its grading can be set according to the occurrence probability. It can also be defined from whether there are means to detect the failure of this type of equipment in time to detectability, that is, corresponding to another failure analysis dimension. Finally, the management effectiveness can also be defined from whether there are management means for the failure mode that causes shutdown and reactor trip of this type of equipment and the effectiveness of the management means, that is, corresponding to another failure analysis dimension.

[0059] Optionally, in step S3, each of the failure analysis dimensions is graded according to a preset evaluation criterion to obtain its corresponding several levels, including: grading the intervention degree according to whether the equipment can be repaired under full power, needs to reduce the load for repair, can be intervened in operation, and cannot be intervened in time after the corresponding equipment degrades to obtain its corresponding first level, second level, third level, and fourth level; grading the detectability according to whether the failure can be found through alarm, can be found through patrol inspection, can be found through calibration or test, and there is no effective means to find the failure to obtain its corresponding first level, second level, third level, and fourth level; grading the occurrence degree according to the number of times of causing shutdown and reactor trip / degradation being 0, 1, 2, and more than 2 times of causing shutdown and reactor trip / degradation to obtain its corresponding first level, second level, third level, and fourth level; grading the management effectiveness according to whether it can be managed through regular replacement, can be managed through regular renovation, can be managed through calibration / test, and there is no effective preventive maintenance means for management to obtain its corresponding first level, second level, third level, and fourth level. Specifically, the process of grading the failure analysis dimensions to obtain levels can divide each failure analysis dimension into 4 levels, namely the first level, second level, third level, and fourth level. Among them, the evaluation criteria for each level are set. The corresponding first level, second level, third level, and fourth level can be specifically set according to the above evaluation criteria.

[0060] Optionally, in the step S3, the setting of the corresponding grade coefficients for the several grades includes: setting the grade coefficients for the first grade, the second grade, the third grade, and the fourth grade corresponding to the intervention degree, the detectability, the occurrence degree, and the management effectiveness to increase in the increasing order of the grades. Specifically, after obtaining the corresponding four grades, grade coefficients are set for each grade respectively, where the magnitudes of the grade coefficients increase in the increasing order of the grades. For example, the grade coefficient of the first grade is set to 1, the grade coefficient of the second grade is larger than that of the first grade and is set to 2. The grade coefficient of the third grade is larger than that of the second grade and is set to 3. The grade coefficient of the fourth grade is larger than that of the third grade and is set to 4. The values of the grade coefficients can also be other values. Optimally, the grade coefficients of the same grade in each failure mode dimension are the same value.

[0061] Optionally, in the step S6, obtaining the elimination priority number of the single - failure trip - and - trip - reactor equipment according to the elimination priority number of the failure mode elimination priority number includes: when the number of failure modes corresponding to the single - failure trip - and - trip - reactor equipment is unique, obtaining the elimination priority number corresponding to the unique failure mode as the elimination priority number of the single - failure trip - and - trip - reactor equipment. Specifically, when the number of types of failure modes corresponding to the SPV equipment is unique, directly taking the elimination priority number corresponding to this failure mode as the elimination priority number of the SPV equipment.

[0062] Optionally, in the step S6, obtaining the elimination priority number of the single - failure trip - and - trip - reactor equipment according to the elimination priority number of the failure mode elimination priority number further includes: when the number of failure modes corresponding to the single - failure trip - and - trip - reactor equipment is two or more, obtaining the elimination priority numbers corresponding to all its failure modes, and obtaining the maximum value among them as the elimination priority number of the single - failure trip - and - trip - reactor equipment. That is, when the number of types of failure modes corresponding to the SPV equipment is not unique, analyzing and calculating different failure modes of the SPV equipment to obtain the elimination priority number corresponding to each failure mode, and taking the maximum value among them as the elimination priority number of the SPV equipment.

[0063] Optionally, in step S7, obtaining the elimination priority numbers of all the single-failure trip and reactor trip devices and sorting them to obtain the single-failure trip and reactor trip devices whose elimination priority number sorting meets the preset conditions for elimination or mitigation includes: sorting according to the numerical values of the elimination priority numbers of the single-failure trip and reactor trip devices, and obtaining the single-failure trip and reactor trip devices corresponding to the largest 20% of the numerical values for elimination or mitigation; specifically, operation and maintenance experience shows that the equipment management of nuclear power plants conforms to the Pareto principle (80-20 principle), that is, about 80% of the important functions are completed by 20% of the equipment, and about 80% of the trip and reactor trip events are caused by 20% of the equipment. After scoring and sorting the risks of all SPV equipment in the power plant using the elimination priority numbers, the power plant can generally select the top 20% of the SPV equipment according to the actual operation and maintenance resource situation to focus on elimination and mitigation work, which will greatly reduce the occurrence probability of unplanned shutdown and reactor trip events and improve the operation and maintenance performance.

[0064] Optionally, the nuclear power unit equipment management method of the present invention further includes: obtaining the equipment categories of all single-failure trip and reactor trip devices, and performing steps S2 to S6 on each category of single-failure trip and reactor trip devices; obtaining the elimination priority numbers of all categories of single-failure trip and reactor trip devices and sorting them to obtain the categories of single-failure trip and reactor trip devices whose elimination priority number sorting meets the preset conditions for elimination or mitigation. Specifically, in order to reduce the analysis process, all SPV equipment is classified, and the above operations are performed on each category of SPV equipment, and finally the elimination priority numbers of this category of SPV equipment are obtained. According to the category, the elimination priority numbers of the SPV equipment are sorted, and finally the categories of SPV equipment that need to be eliminated or mitigated are obtained, and the same elimination or mitigation actions are performed on all SPV equipment in this category. The division of equipment types can classify those with different functional positions but performing the same function into the same category.

[0065] As Figure 2 shown, a nuclear power unit equipment management system of the present invention includes:

[0066] A first identification unit 110, configured to identify all single-failure trip and reactor trip devices in the nuclear power unit equipment;

[0067] A fault analysis dimension setting unit 120, configured to set multiple fault analysis dimensions in the fault analysis process of the single-failure trip and reactor trip devices;

[0068] A level setting unit 130, configured to grade each of the fault analysis dimensions according to a preset evaluation standard to obtain its corresponding several levels;

[0069] A level coefficient setting unit 140, configured to set corresponding level coefficients for the several levels respectively;

[0070] A second recognition unit 150, configured to recognize a fault mode corresponding to the single-failure trip-and-dump device, and obtain a level of the fault analysis dimension corresponding to the fault mode;

[0071] A first calculation unit 160, configured to obtain a corresponding level coefficient according to the levels of all the fault analysis dimensions, and obtain a product of all the level coefficients as an elimination priority number of the fault mode;

[0072] A second calculation unit 170, configured to obtain an elimination priority number of the single-failure trip-and-dump device according to the elimination priority number of the fault mode elimination priority number;

[0073] An execution unit 180, configured to obtain and sort the elimination priority numbers of all the single-failure trip-and-dump devices, so as to obtain a single-failure trip-and-dump device whose elimination priority number sorting meets a preset condition for elimination or mitigation.

[0074] Specifically, the specific cooperation operation process among the units of a nuclear power unit equipment management system here can specifically refer to the above-mentioned nuclear power unit equipment management method, which will not be elaborated here.

[0075] In addition, an electronic device according to the present invention includes a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program to implement any one of the above nuclear power unit equipment management methods. Specifically, according to an embodiment of the present invention, the process described with reference to the flowchart above can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes program codes for executing the method shown in the flowchart. In such an embodiment, when the computer program is downloaded and installed by the electronic device and executed, it executes the above functions defined in the method of the embodiment of the present invention. The electronic device in the present invention can be a terminal such as a notebook, a desktop computer, a tablet computer, a smart phone, etc., or a server.

[0076] In addition, a computer storage medium of the present invention stores a computer program, and when the computer program is executed by a processor, it implements a nuclear power unit device management method according to any one of the above. Specifically, it should be noted that the computer-readable medium of the present invention can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium can include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device. In the present invention, the computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, and the computer-readable signal medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0077] The above computer-readable medium can be included in the above electronic device; or it can exist separately without being assembled into the electronic device.

[0078] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A method for managing nuclear power unit equipment, characterized in that, Including the following steps: S1. Identify all single-failure trip and reactor trip equipment in the nuclear power unit equipment; S2. Set multiple failure analysis dimensions in the failure analysis process of the single-failure trip and reactor trip equipment; S3. Classify each of the failure analysis dimensions according to a preset evaluation criterion to obtain its corresponding several levels, and set corresponding level coefficients for the several levels respectively; S4. Identify the failure mode corresponding to the single-failure trip and reactor trip equipment, and obtain the level of the failure analysis dimension corresponding to the failure mode; S5. Obtain the corresponding level coefficients according to the levels of all the failure analysis dimensions, and obtain the product of all the level coefficients as the elimination priority number of the failure mode; S6. Obtain the elimination priority number of the single-failure trip and reactor trip equipment according to the elimination priority number of the failure mode; S7. Obtain the elimination priority numbers of all the single-failure trip and reactor trip equipment and sort them to obtain the single-failure trip and reactor trip equipment whose elimination priority number sorting meets the preset conditions for elimination or mitigation.

2. The method for managing nuclear power unit equipment according to claim 1, characterized in that, The multiple failure analysis dimensions include: The intervention degree corresponding to the intervention process after the failure of the single-failure trip and reactor trip equipment; The occurrence degree corresponding to the failure occurrence frequency of the single-failure trip and reactor trip equipment; The detectability corresponding to the failure early identification process of the single-failure trip and reactor trip equipment; The management effectiveness corresponding to the management process after the failure of the single-failure trip and reactor trip equipment.

3. The method for managing nuclear power unit equipment according to claim 2, characterized in that, In the step S3, classifying each of the failure analysis dimensions according to a preset evaluation criterion to obtain its corresponding several levels includes: Classifying the intervention degree into the first level, the second level, the third level, and the fourth level according to whether the equipment can be repaired under full power, needs to reduce the load for repair, can be subject to operation intervention, and cannot be intervened in time after the corresponding equipment is downgraded; Classifying the detectability into the first level, the second level, the third level, and the fourth level according to whether the failure can be found through alarm, can be found through patrol inspection, can be found through calibration or test, and there is no effective means to find the failure; Classifying the occurrence degree into the first level, the second level, the third level, and the fourth level according to the number of times of causing shutdown / reactor trip / downgrade being 0 time, 1 time, 2 times, and more than 2 times; Classifying the management effectiveness into the first level, the second level, the third level, and the fourth level according to whether it can be managed through regular replacement, can be managed through regular renovation, can be managed through calibration / test, and there is no effective preventive maintenance means for management.

4. The method for managing nuclear power unit equipment according to claim 3, characterized in that, In the step S3, setting the corresponding level coefficients for the several levels respectively includes: Setting the level coefficients for the first level, the second level, the third level, and the fourth level corresponding to the intervention degree, the detectability, the occurrence degree, and the management effectiveness to increase in the increasing order of the levels.

5. The method for managing nuclear power unit equipment according to claim 3, characterized in that, In the step S6, obtaining the elimination priority number of the single-failure trip-and-dump device according to the elimination priority number of the failure mode includes: When the number of failure modes corresponding to the single-failure trip-and-dump device is unique, obtaining the elimination priority number corresponding to the unique failure mode as the elimination priority number of the single-failure trip-and-dump device.

6. The method for managing nuclear power unit equipment according to claim 5, characterized in that, In the step S6, obtaining the elimination priority number of the single-failure trip-and-dump device according to the elimination priority number of the failure mode further includes: When the number of failure modes corresponding to the single-failure trip-and-dump device is two or more, obtaining the elimination priority numbers corresponding to all its failure modes, and obtaining the maximum value among them as the elimination priority number of the single-failure trip-and-dump device.

7. The method for managing nuclear power unit equipment according to claim 1, characterized in that, In the step S7, obtaining the elimination priority numbers of all the single-failure trip-and-dump devices and sorting them to obtain the single-failure trip-and-dump devices whose elimination priority number sorting meets the preset conditions for elimination or mitigation includes: Sorting according to the numerical values of the elimination priority numbers of the single-failure trip-and-dump devices, and obtaining the single-failure trip-and-dump devices corresponding to the largest 20% of the numerical values for elimination or mitigation; and / or The method further includes: Obtaining the device categories of all the single-failure trip-and-dump devices, and performing the steps S2 to S6 on the single-failure trip-and-dump devices of each category; Obtaining the elimination priority numbers of the single-failure trip-and-dump devices of all categories and sorting them, and obtaining the single-failure trip-and-dump devices of the device categories corresponding to the elimination priority number sorting that meets the preset conditions for elimination or mitigation.

8. A nuclear power unit equipment management system, characterized in that, It includes: A first identification unit for identifying all the single-failure trip-and-dump devices in the nuclear power unit equipment; A failure analysis dimension setting unit for setting multiple failure analysis dimensions in the failure analysis process of the single-failure trip-and-dump device; A level setting unit for grading each of the failure analysis dimensions according to a preset evaluation criterion to obtain its corresponding several levels; A level coefficient setting unit for setting corresponding level coefficients for the several levels respectively; A second identification unit for identifying the failure modes corresponding to the single-failure trip-and-dump device and obtaining the levels of the failure analysis dimensions corresponding to the failure modes; A first calculation unit for obtaining the corresponding level coefficients according to the levels of all the failure analysis dimensions and obtaining the product of all the level coefficients as the elimination priority number of the failure mode; A second calculation unit for obtaining the elimination priority number of the single-failure trip-and-dump device according to the elimination priority number of the failure mode; An execution unit for obtaining the elimination priority numbers of all the single-failure trip-and-dump devices and sorting them to obtain the single-failure trip-and-dump devices whose elimination priority number sorting meets the preset conditions for elimination or mitigation.

9. A computer storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by a processor, it implements the nuclear power unit equipment management method according to any one of claims 1-7.

10. An electronic device, characterized in that, It includes a memory and a processor; The memory is used for storing a computer program; The processor is used to execute the computer program to implement the nuclear power unit equipment management method according to any one of claims 1-7.

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