Method, device and computer equipment for eliminating key sensitive equipment in nuclear power plants

Abstract

This application relates to the field of equipment management technology, and provides a method, apparatus, computer equipment, storage medium, and computer program product for eliminating critical sensitive equipment in a nuclear power plant. The method includes: acquiring operational data of nuclear power plant equipment and identifying critical sensitive equipment based on the operational data; performing a necessity analysis on the elimination of the critical sensitive equipment to determine the critical sensitive equipment to be eliminated; and conducting a feasibility assessment on the elimination of the critical sensitive equipment to determine an elimination plan for the critical sensitive equipment to be eliminated. The elimination plan is used to instruct the elimination of the critical sensitive equipment to be eliminated to ensure the safe and stable operation of the nuclear power plant. By conducting necessity analysis and feasibility assessment, the critical sensitive equipment to be eliminated and its elimination plan are determined and provided to nuclear power plant technicians for elimination. This can effectively reduce the probability of automatic shutdown events caused by critical sensitive equipment, reduce losses to the nuclear power plant, and improve overall reliability and safety.

Description

Technical Field

[0001] The present application relates to the technical field of equipment management, and in particular to a method, device, computer equipment, storage medium and computer program product for eliminating key sensitive equipment in a nuclear power plant. Background Art

[0002] As a clean, efficient and high-quality modern energy, nuclear power occupies an increasingly high proportion in my country's current energy structure and has been used more and more widely. The production of nuclear power is generally to heat water through a nuclear reactor, and then feed it to a steam generator to output steam to drive a steam turbine and a generator, converting nuclear energy into electrical energy for use. In existing nuclear power plants, the process is complex and the equipment is complicated. In addition to the above main working equipment, it also includes protection equipment such as tripping equipment, protection channels and sensors to maintain normal operation. For safety reasons, the field will refer to equipment that causes a nuclear power unit to automatically shut down or shut down due to a single failure as critical sensitive equipment for automatic shutdown (CCM1, Critical components management 1). How to effectively manage CCM1 equipment is a top priority for nuclear power plants.

[0003] According to statistics, the number of CCM1 equipment accounts for about 1% of the total number of equipment in nuclear power plants, but the automatic shutdown and reactor shutdown events caused by them account for about 85% of the equipment shutdown and reactor shutdown events in nuclear power plants, which has a great impact on the safe operation of nuclear power plants and also causes huge energy consumption losses. Summary of the invention

[0004] Based on this, it is necessary to provide a method, device, computer equipment, storage medium and computer program product for eliminating key sensitive equipment in nuclear power plants, which can reduce the probability of automatic shutdown and reactor shutdown events caused by CCM1 equipment and improve the overall reliability and safety of nuclear power plants in response to the above-mentioned technical problems.

[0005] In a first aspect, the present application provides a method for eliminating key sensitive equipment in a nuclear power plant, the method comprising:

[0006] Obtaining operating data of nuclear power plant equipment and identifying key sensitive equipment based on the operating data;

[0007] Conduct a necessity analysis on the key sensitive equipment to eliminate and determine the key sensitive equipment to be eliminated;

[0008] Conduct an elimination feasibility assessment on the key sensitive equipment to be eliminated, and determine an elimination plan for the key sensitive equipment to be eliminated; wherein the elimination plan is used to instruct the elimination of the key sensitive equipment to be eliminated to ensure the safe and stable operation of the nuclear power plant.

[0009] In one embodiment, the performing of the elimination necessity analysis on the key sensitive devices to determine the key sensitive devices to be eliminated includes:

[0010] Performing a failure mode analysis on the key sensitive equipment to obtain a failure mode type corresponding to the key sensitive equipment; wherein the failure mode type includes a time failure mode and a random failure mode;

[0011] For the key sensitive equipment whose failure mode type is a time failure mode, outputting a regular maintenance plan for the key sensitive equipment; wherein the regular maintenance plan for the key sensitive equipment is used for preventive management of the nuclear power plant;

[0012] Perform risk analysis on the key sensitive equipment whose failure mode type is a random failure mode, and determine the key sensitive equipment to be eliminated.

[0013] In one embodiment, the performing of failure mode analysis on the key sensitive device to obtain the failure mode type corresponding to the key sensitive device includes:

[0014] Obtaining a list of failure modes of the key sensitive equipment;

[0015] An aging analysis is performed on the failure mode list to determine the failure mode type corresponding to the key sensitive equipment.

[0016] In one embodiment, the step of performing risk analysis on the key sensitive devices whose failure mode type is a random failure mode to determine the key sensitive devices to be eliminated includes:

[0017] According to the equipment attributes of the key sensitive equipment of the random failure mode, query is performed in the nuclear power plant shutdown event library to obtain the event number;

[0018] When the number of events is greater than a preset risk number threshold, it is determined to be a key sensitive device to be eliminated.

[0019] In one embodiment, the feasibility assessment of eliminating the key sensitive equipment to be eliminated and determining the elimination plan of the key sensitive equipment to be eliminated includes:

[0020] Analyze the equipment attributes of the key sensitive equipment to be eliminated and the nuclear power plant shutdown event library to obtain the failure loss of the key sensitive equipment to be eliminated;

[0021] Corresponding analysis is performed to obtain the elimination cost of eliminating the key sensitive equipment to be eliminated according to each preset elimination plan;

[0022] An elimination plan for the key sensitive equipment to be eliminated is determined based on the elimination cost and the failure loss.

[0023] In one embodiment, there are more than two nuclear power plant equipments; obtaining the operation data of the nuclear power plant equipments and determining the key sensitive equipments according to the operation data includes:

[0024] If it is determined based on the operating data of the nuclear power plant equipment that a single failure of the nuclear power plant equipment causes a shutdown event, the nuclear power plant equipment is determined to be a key sensitive equipment.

[0025] In a second aspect, the present application also provides a device for eliminating key sensitive equipment in a nuclear power plant. The device comprises:

[0026] A key sensitive equipment determination module, used to obtain operation data of nuclear power plant equipment and determine key sensitive equipment based on the operation data;

[0027] The elimination necessity analysis module is used to analyze the necessity of eliminating the key sensitive equipment and determine the key sensitive equipment to be eliminated;

[0028] The elimination feasibility assessment module is used to conduct an elimination feasibility assessment on the key sensitive equipment to be eliminated and determine an elimination plan for the key sensitive equipment to be eliminated; wherein the elimination plan is used to instruct the elimination of the key sensitive equipment to be eliminated to ensure the safe and stable operation of the nuclear power plant.

[0029] In a third aspect, the present application further provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0030] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of the above method when executed by a processor.

[0031] In a fifth aspect, the present application further provides a computer program product, wherein the computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0032] The above-mentioned method, device, computer equipment, storage medium and computer program product for eliminating key sensitive equipment in nuclear power plants determine key sensitive equipment through the operation data of nuclear power plant equipment, and perform a necessity analysis and feasibility assessment on the elimination of key sensitive equipment, determine the key sensitive equipment to be eliminated in all nuclear power plant equipment and their elimination plan, and provide them to nuclear power plant technicians for elimination of key sensitive equipment. This plan can effectively reduce the probability of automatic shutdown and shutdown events of nuclear power plants caused by key sensitive equipment, reduce losses and improve the overall reliability and safety of nuclear power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 An application environment diagram of a method for eliminating key sensitive equipment in a nuclear power plant in one embodiment;

[0034] Figure 2 It is a flowchart of a method for eliminating key sensitive equipment in a nuclear power plant in one embodiment;

[0035] Figure 3 A schematic diagram of a flow chart of steps for determining a nuclear power plant device as a key sensitive device in an embodiment;

[0036] Figure 4 A schematic flow chart of a method for eliminating key sensitive equipment in a nuclear power plant in another embodiment;

[0037] Figure 5 A schematic flow chart of a method for eliminating key sensitive equipment in a nuclear power plant in another embodiment;

[0038] Figure 6 A schematic flow chart of a method for eliminating key sensitive equipment in a nuclear power plant in another embodiment;

[0039] Figure 7 A schematic flow chart of a method for eliminating key sensitive equipment in a nuclear power plant in another embodiment;

[0040] Figure 8 It is a structural block diagram of a device for eliminating key sensitive equipment in a nuclear power plant in one embodiment;

[0041] Fig. 9 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] As a clean, efficient and high-quality modern energy, nuclear power occupies an increasingly high proportion in my country's current energy structure and has been used more and more widely. The production of nuclear power is generally to heat water through a nuclear reactor, give it to the steam generator to output steam to drive the steam turbine and generator, and convert nuclear energy into electrical energy for use. In existing nuclear power plants, the process is complex and the equipment is complicated. In addition to the above main working equipment, it also includes monitoring and protection equipment such as tripping equipment, protection channels and measuring instruments to maintain normal operation. For safety considerations, the field will refer to the equipment that causes the nuclear power unit to automatically shut down or stop the reactor due to a single failure as the critical sensitive equipment for automatic shutdown and shutdown (CCM1, Critical components management 1). How to effectively carry out the management of CCM1 equipment is the top priority of nuclear power plants. According to statistics, the number of CCM1 equipment accounts for about 1% of the total number of equipment in nuclear power plants, but the automatic shutdown and shutdown events caused by it account for about 85% of the shutdown and shutdown events of nuclear power plant equipment, which has a great impact on the safe operation of nuclear power plants and also causes great energy consumption losses.

[0044] Therefore, in response to the above-mentioned technical problems, the present application provides a method, device, computer equipment, storage medium and computer program product for eliminating key sensitive equipment in nuclear power plants, which can reduce the probability of automatic shutdown and reactor shutdown events in nuclear power plants caused by CCM1 equipment and improve the overall reliability and safety of nuclear power plants.

[0045] The method for eliminating key sensitive equipment in a nuclear power plant provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be integrated on the server 104, or it can be placed on the cloud or other network servers. Specifically, the terminal 102 obtains the operating data of the nuclear power plant equipment on the server 104, and determines the key sensitive equipment based on the operating data; performs a necessity analysis on the elimination of the key sensitive equipment, and determines the key sensitive equipment to be eliminated; performs a feasibility assessment on the elimination of the key sensitive equipment to be eliminated, and determines the elimination plan for the key sensitive equipment to be eliminated; wherein the elimination plan is used to indicate the elimination of the key sensitive equipment to be eliminated to ensure the safe and stable operation of the nuclear power plant. Among them, the terminal 102 can be, but is not limited to, various personal computers, laptops, smart phones and tablets. The server 104 can be implemented with an independent server or a server cluster consisting of multiple servers.

[0046] In one embodiment, Figure 2 As shown, a method for eliminating key sensitive equipment in a nuclear power plant is provided, and the method is applied to Figure 1 The terminal 102 in the example is used as an example to illustrate, and the following steps are included:

[0047] Step 100: Obtain operating data of nuclear power plant equipment and determine key sensitive equipment based on the operating data.

[0048] Among them, the number of nuclear power plant equipment is more than two, including the minimum equipment unit and the minimum device unit constituting the minimum equipment unit. The minimum equipment unit can be the main equipment and the monitoring and protection equipment that cooperates with the operation of the main equipment, and the minimum device unit is the device that constitutes the above minimum equipment unit. For example, the main devices of the minimum equipment unit can be nuclear reactors, steam generators, main pumps, steam turbines, generators, and transformers; the monitoring and protection equipment of the minimum equipment unit can refer to the monitoring and protection equipment used in conjunction with the above main equipment, such as signal measurement equipment for water level, pressure, flow, speed, bearings, and electrical parameters, parameter adjustment mechanisms such as valves, as well as tripping equipment, channel equipment, and shutdown and shutdown actuators and other protection equipment. The minimum device unit can be nuts, bolts, diaphragms, etc. that constitute the above minimum equipment unit. The key sensitive equipment that can be eliminated in this application is mainly the monitoring and protection equipment and the minimum device unit in the above-mentioned minimum equipment unit.

[0049] Specifically, the operation data of the nuclear power plant equipment includes the operation status, operation time and operation parameters of the equipment, etc., and the operation data can be actively stored in the server 104 by the equipment end during operation. When automatic shutdown accidents occur frequently in the nuclear power plant, or when key sensitive equipment elimination inspections are regularly performed according to safety regulations, the nuclear power plant technicians can obtain the operation data of the nuclear power plant equipment from the server 104 through the terminal 102, and determine the key sensitive equipment according to the operation data.

[0050] Furthermore, key sensitive equipment refers to equipment that causes a nuclear power unit to automatically shut down or shut down if a single failure occurs, i.e., the nuclear reactor or steam turbine in the nuclear power unit stops operating after the failure of the equipment. It is particularly noted that the automatic shutdown and shutdown events that need to be eliminated mentioned in this application are all unplanned shutdown and shutdown events.

[0051] In one embodiment, step 100 includes: if it is determined based on the operation data of the nuclear power plant equipment that a single failure of the nuclear power plant equipment causes a shutdown event, determining that the nuclear power plant equipment is a key sensitive equipment.

[0052] Specifically, there is no unique way to determine the key sensitive equipment through the operation data of nuclear power plant equipment. It can be determined by whether the protection signal connected to device A is a single protection signal, that is, any action of the connected protection signal will cause device A to stop running. By querying in the operation data whether the stoppage of device A is caused by the action of any protection signal, device A is determined to be a key sensitive equipment. It can also be that when a failure of device A causes the nuclear reactor or steam turbine in the nuclear power unit to stop running, device A is marked as a key sensitive equipment, and then the nuclear power plant equipment with the key sensitive equipment mark is determined to be a key sensitive equipment by querying in the operation data.

[0053] In addition, due to the large number of nuclear power plant equipment, this application is Figure 3 The key sensitive equipment is determined in the order from the source to the smallest unit as shown. The order of judgment can be according to the shutdown event execution mechanism, shutdown signal giving device, signal channel device and signal measurement transmitter in the figure, and then according to the adjustment mechanism and non-adjustment mechanism corresponding to the process parameters corresponding to the measured signal, the process parameter adjustment channel device (transmitter), and the non-adjustment mechanism only considers the mechanism that affects the process parameters, and judges whether it is a key sensitive device from all the above devices. In addition, in the process of determining the key sensitive equipment, it can be that all the equipment is listed and then uniformly judged whether it is a key sensitive equipment, or each equipment can be judged separately whether it is a key sensitive equipment before judging the next equipment.

[0054] Step 200: Analyze the necessity of eliminating key sensitive equipment and determine the key sensitive equipment to be eliminated.

[0055] Specifically, after determining the key sensitive equipment, it is necessary to conduct a necessity analysis for eliminating the key sensitive equipment one by one to determine the key sensitive equipment to be eliminated. The necessity analysis for elimination can be to analyze whether the failure caused by the key sensitive equipment is an aging problem related to time, or to analyze whether the failure caused by the key sensitive equipment is a small probability event that occurs accidentally.

[0056] In one embodiment, the necessity of eliminating key sensitive equipment can be analyzed by first obtaining a list of failure modes of key sensitive equipment. Then, an aging analysis is performed on the failure mode list according to the aging database to determine the failure mode type corresponding to the key sensitive equipment. According to the failure mode type, it is determined whether it is an aging failure. For key sensitive equipment with aging failure, a regular maintenance plan for key sensitive equipment is output for preventive management of the nuclear power plant. Risk analysis is performed on key sensitive equipment with a failure mode type of random failure mode. Key sensitive equipment with a risk frequency greater than a preset threshold is determined as a key sensitive equipment to be eliminated, otherwise the status quo can be maintained.

[0057] Step 300: Conduct an elimination feasibility assessment on the key sensitive equipment to be eliminated, and determine an elimination plan for the key sensitive equipment to be eliminated; wherein the elimination plan is used to indicate the elimination of the key sensitive equipment to be eliminated to ensure the safe and stable operation of the nuclear power plant.

[0058] Specifically, after determining the key sensitive equipment to be eliminated that needs to be eliminated, a feasibility assessment needs to be conducted on the key sensitive equipment to be eliminated based on possible elimination plans. It can be understood that the elimination of key sensitive equipment means that the key sensitive equipment to be eliminated will no longer cause the nuclear power plant to automatically shut down due to its failure.

[0059] Among them, the feasibility assessment includes technical feasibility assessment and economic feasibility assessment. In one embodiment, it is necessary to first analyze the equipment attributes of the key sensitive equipment to be eliminated and the nuclear power plant shutdown event library to obtain the failure loss of the key sensitive equipment to be eliminated; the corresponding analysis is to obtain the elimination cost of the key sensitive equipment to be eliminated according to the preset elimination plan; wherein the preset elimination plan includes at least one of redundant settings, upgrade replacement and parameter adjustment; according to the elimination cost and failure loss, determine the elimination plan for the key sensitive equipment to be eliminated.

[0060] Furthermore, the elimination plan for the determined key sensitive equipment to be eliminated can be outputted in the form of display on the display screen of the terminal 102, or can be outputted in the form of printing and provided to the nuclear power plant technicians.

[0061] The above-mentioned method, device, computer equipment, storage medium and computer program product for eliminating key sensitive equipment in nuclear power plants determine key sensitive equipment through the operation data of nuclear power plant equipment, and perform a necessity analysis and feasibility assessment on the elimination of key sensitive equipment, determine the key sensitive equipment to be eliminated in all nuclear power plant equipment and their elimination plan, and provide them to nuclear power plant technicians for elimination of key sensitive equipment. This plan can effectively reduce the probability of automatic shutdown and shutdown events of nuclear power plants caused by key sensitive equipment, reduce losses and improve the overall reliability and safety of nuclear power plants.

[0062] In one embodiment, Figure 4 As shown, step 200 includes:

[0063] Step 210: Perform failure mode analysis on key sensitive equipment to obtain failure mode types corresponding to the key sensitive equipment; wherein the failure mode types include time failure modes and random failure modes.

[0064] Specifically, the failure mode is the possible failure mode of the device itself and its components. It can be understood that the failure mode is a failure code and a failure description given by the manufacturer, which is pre-stored as a preset failure mode data table and can be called and used when failure mode analysis is required.

[0065] In one embodiment, Figure 5 As shown, step 210 includes:

[0066] Step 211: Obtaining a failure mode list of key sensitive devices. This can be understood as extracting the failure mode list of key sensitive devices from a preset failure mode data table according to the information of the key sensitive devices.

[0067] Step 212: Perform aging analysis on the failure mode list to determine the failure mode type corresponding to the key sensitive equipment.

[0068] Specifically, an aging analysis is performed on each fault mode in the fault mode list and the aging database to determine the fault mode type corresponding to the key sensitive equipment. Among them, the aging database is a correspondence table between common fault modes of various equipment and whether they are related to time. By comparing each fault mode in the fault mode list in the aging database one by one, the fault mode type of each fault mode can be determined. It can be understood that when the fault mode type is a time fault mode, the occurrence of this fault mode is related to the operating time. As the operating time increases, the probability of failure will increase, such as drift, degradation, wear, etc. When the fault mode type is a random fault mode, the occurrence of this fault mode has no obvious relationship with the operating time, and its distribution is a normal distribution. As the operating time increases, the failure rate will not increase significantly, and this fault mode may occur at any time.

[0069] Furthermore, according to the failure mode type of each failure mode of the key sensitive device, the method of determining the failure mode type corresponding to the key sensitive device is not unique. When the key sensitive device has one failure mode, if the failure mode type of the failure mode is a random failure mode, the failure mode type corresponding to the key sensitive device is a random failure mode; if the failure mode type of the failure mode is a time failure mode, the failure mode type corresponding to the key sensitive device is a time failure mode. When there are multiple failure modes for the key sensitive device, all failure mode types may be random failure modes / time failure modes, and the failure mode type corresponding to the key sensitive device is a random failure mode / time failure mode. It may also be that a preset proportion of failure mode types among all failure mode types are random failure modes / time failure modes, and the failure mode type corresponding to the key sensitive device is a random failure mode / time failure mode. The preset proportion is not fixed and can be selected according to actual conditions.

[0070] Step 220: For critical sensitive equipment whose failure mode type is a time failure mode, a regular maintenance plan for critical sensitive equipment is output; wherein the regular maintenance plan for critical sensitive equipment is provided for preventive management of the nuclear power plant. Specifically, when the failures of critical sensitive equipment are all time-related failure modes, a regular maintenance plan for critical sensitive equipment is output, and a management strategy for regular preventive maintenance or replacement of equipment is formulated to manage the critical sensitive equipment. For example, the service life of the overall equipment can be extended by regularly replacing equipment components corresponding to time-related failure modes.

[0071] Step 230: Perform risk analysis on key sensitive devices whose failure mode type is a random failure mode to determine key sensitive devices to be eliminated. Specifically, when the failure mode type of a key sensitive device is a random failure mode, a risk analysis needs to be performed on the key sensitive device to determine whether it is necessary to eliminate it.

[0072] In one embodiment, Figure 6 As shown, step 230 includes:

[0073] Step 231: According to the equipment attributes of the key sensitive equipment of the random failure mode, a query is performed in the nuclear power plant shutdown event library to obtain the event number.

[0074] The nuclear power plant shutdown event library is the automatic shutdown events that have occurred in the nuclear power plant, and the recorded attributes include shutdown time, main reasons for shutdown, and recovery time, etc. When it is determined that the shutdown is caused by a specific device, the main reason for the shutdown can be the specific device and its device attributes.

[0075] Specifically, according to the equipment attributes of the key sensitive equipment of the random failure mode, a query can be made in the nuclear power plant shutdown event library to obtain the corresponding number of events. The number of events is the number of shutdown events caused by the equipment belonging to the equipment attribute. For example, suppose that in the nuclear power plant shutdown event library, there is a record of 1 shutdown event caused by the A equipment belonging to the "valve", and 2 shutdown events caused by the B equipment belonging to the "pump". Then, when judging the necessity of eliminating the C equipment with the equipment class attribute of "pump", it will be found in the nuclear power plant shutdown event library that the number of shutdown events caused by the "pump" is 2 times.

[0076] Step 232: When the number of events is greater than the preset risk number threshold, determine it as a key sensitive device to be eliminated. Specifically, when the number of events corresponding to the key sensitive device obtained in step 231 is greater than the preset risk number threshold, the key sensitive device is determined to be a key sensitive device to be eliminated. Among them, the preset risk number threshold is not fixed and can be set according to actual needs. For example, in this embodiment, the preset risk number threshold is 1. Then, when the above-mentioned C device performs a judgment on the necessity of elimination and the number of events obtained is 2, the C device will be determined as a key sensitive device to be eliminated.

[0077] In one embodiment, Figure 7 As shown, step 300 includes:

[0078] Step 310: Analyze the equipment attributes of the key sensitive equipment to be eliminated and the nuclear power plant shutdown event library to obtain the failure loss of the key sensitive equipment to be eliminated.

[0079] Specifically, in the shutdown event library of a nuclear power plant, the corresponding number of events and recovery time can be obtained according to the equipment attributes of the key sensitive equipment to be eliminated. Then, the failure loss of the key sensitive equipment to be eliminated can be obtained according to the product of the number of events, recovery time, average power generation per hour, and average cost per kilowatt-hour. For example, the number of events queried by device A is 2 times, the recovery time for each time is 1 day, and the average power generation per hour is 1 million kilowatts. Then, the power generation loss is: 2 days * 24 hours / day * 1 million kilowatts = 48 million kilowatt-hours (10,000 kilowatt-hours). Assuming that each kilowatt-hour is 0.4 yuan, the economic loss is 19.2 million.

[0080] Step 320: Corresponding analysis is performed to obtain the elimination cost of eliminating the key sensitive equipment to be eliminated according to a preset elimination plan; wherein the preset elimination plan may include at least one of redundant setting, upgrade replacement, and parameter adjustment.

[0081] Specifically, the corresponding analysis obtains the process of eliminating the key sensitive equipment to be eliminated according to the preset elimination plan, including judging whether the elimination can be carried out according to the preset elimination plan, and calculating the elimination cost of the elimination. Among them, the process of judging whether the elimination can be carried out according to the preset elimination plan can be judged according to the equipment attributes, which can be understood as that all preset elimination plans have corresponding executable equipment attributes, and the elimination costs corresponding to the equipment attributes. For example, redundant settings are the cost of adding a set of equipment and the labor cost of construction. Secondly, when selecting the preset elimination plan, the priority can also be set. In this embodiment, if all are feasible, the priority of parameter adjustment is greater than upgrade replacement and redundant setting. In the upgrade replacement and redundant setting schemes, it can be determined according to the elimination cost, and the one with low elimination cost is given priority as the elimination plan for the key sensitive equipment to be eliminated.

[0082] Furthermore, preset elimination schemes are pre-stored in the database as feasible operations corresponding to parameter adjustments, such as changing the protection signal 1 / x to 2 / x, that is, the previous shutdown of the reactor when 1 of the x signals is activated is changed to the shutdown of the reactor when 2 or more of the x signals are activated. The upgrade replacement scheme may be to replace the intelligent equipment with non-intelligent equipment to avoid the shutdown time caused by intelligent misjudgment. It can be understood that the redundant setting is the most basic setting, and basically all equipment can be eliminated through the redundant setting, that is, by adding a redundant set of key sensitive equipment to be eliminated, a shutdown event will be caused by one of the failures, and it is changed to a shutdown event will be caused by the failure of both sets of equipment.

[0083] Step 330: Determine an elimination plan for the key sensitive equipment to be eliminated based on the elimination cost and the failure loss. Specifically, compare the elimination cost with the failure loss. If the elimination cost is less than the failure loss, the elimination plan for the key sensitive equipment to be eliminated is considered feasible from an economic analysis and can be implemented as an elimination plan. In other embodiments, the elimination cost may be significantly less than the failure loss, that is, the difference between the elimination cost and the failure loss is greater than a preset difference threshold. The value of the preset difference threshold is not limited and can be selected according to actual conditions. If the elimination cost is greater than the failure loss, the elimination plan for the key sensitive equipment to be eliminated is considered not feasible from an economic analysis, and the status quo of the key sensitive equipment to be eliminated is maintained unchanged.

[0084] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0085] Based on the same inventive concept, the embodiment of the present application also provides a nuclear power plant key sensitive equipment elimination device for implementing the above-mentioned nuclear power plant key sensitive equipment elimination method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more embodiments of the nuclear power plant key sensitive equipment elimination device provided below can refer to the limitations of the nuclear power plant key sensitive equipment elimination method above, and will not be repeated here.

[0086] In one embodiment, Figure 8 As shown, a device for eliminating key sensitive equipment in a nuclear power plant is provided, including: a key sensitive equipment determination module 810, an elimination necessity analysis module 820 and an elimination feasibility assessment module 830.

[0087] The key sensitive equipment determination module 810 is used to obtain the operating data of the nuclear power plant equipment and determine the key sensitive equipment according to the operating data.

[0088] The elimination necessity analysis module 820 is used to perform elimination necessity analysis on key sensitive devices and determine key sensitive devices to be eliminated.

[0089] The elimination feasibility assessment module 830 is used to conduct elimination feasibility assessment on key sensitive equipment to be eliminated and determine elimination plans for key sensitive equipment to be eliminated; wherein the elimination plans are used to indicate elimination of key sensitive equipment to be eliminated to ensure safe and stable operation of the nuclear power plant.

[0090] In one embodiment, there are more than two nuclear power plant devices. The key sensitive device determination module 810 is also used to determine that a nuclear power plant device is a key sensitive device when it is determined based on the operation data of the nuclear power plant device that a single failure of the nuclear power plant device causes a shutdown event.

[0091] In one embodiment, the elimination necessity analysis module 820 is also used to perform failure mode analysis on key sensitive equipment to obtain failure mode types corresponding to the key sensitive equipment; wherein the failure mode types include time failure modes and random failure modes; it is also used to output a regular maintenance plan for key sensitive equipment whose failure mode type is a time failure mode, wherein the regular maintenance plan for key sensitive equipment is for preventive management of nuclear power plants; it is also used to perform risk analysis on key sensitive equipment whose failure mode type is a random failure mode to determine the key sensitive equipment to be eliminated.

[0092] In one embodiment, the elimination necessity analysis module 820 is further used to obtain a failure mode list of key sensitive devices; and is further used to perform aging analysis on the failure mode list to determine the failure mode type corresponding to the key sensitive devices.

[0093] In one embodiment, the elimination necessity analysis module 820 is also used to query the nuclear power plant shutdown event library according to the equipment attributes of the key sensitive equipment in the random failure mode to obtain the number of events; and is also used to determine the key sensitive equipment to be eliminated when the number of events is greater than the preset risk number threshold.

[0094] In one embodiment, the elimination feasibility assessment module 830 is also used to analyze the equipment attributes of the key sensitive equipment to be eliminated and the nuclear power plant shutdown event library to obtain the failure loss of the key sensitive equipment to be eliminated; it is also used to perform corresponding analysis to obtain the elimination cost of the key sensitive equipment to be eliminated according to the preset elimination plan; wherein the preset elimination plan includes at least one of redundant setting, upgrade replacement and parameter adjustment; and it is also used to determine the elimination plan for the key sensitive equipment to be eliminated based on the elimination cost and the failure loss.

[0095] Each module in the above-mentioned nuclear power plant key sensitive equipment elimination device can be fully or partially implemented by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of the above modules.

[0096] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Fig. 9 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for eliminating key sensitive equipment in a nuclear power plant is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse.

[0097] Those skilled in the art will understand that Fig. 9 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0098] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps of the above-mentioned method for eliminating key sensitive equipment in a nuclear power plant are implemented.

[0099] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned method for eliminating key sensitive equipment in a nuclear power plant are performed.

[0100] In one embodiment, a computer program product is provided, including a computer program, which implements the steps of the above-mentioned method for eliminating key sensitive equipment in a nuclear power plant when executed by a processor.

[0101] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0102] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0103] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for eliminating key sensitive equipment in a nuclear power plant, characterized in that: The method comprises: Acquiring operation data of nuclear power plant equipment, wherein the nuclear power plant equipment includes a minimum equipment unit and a minimum device unit constituting the minimum equipment unit; According to the sequence from the source of the shutdown event to the smallest unit, if it is determined according to the operation data that a single fault causes the shutdown event, it is determined to be a key sensitive device; Performing a failure mode analysis on the key sensitive equipment to obtain a failure mode type corresponding to the key sensitive equipment; wherein the failure mode type includes a random failure mode, and the occurrence of a failure corresponding to the random failure mode has no obvious relationship with the running time; Perform risk analysis on key sensitive equipment whose failure mode type is a random failure mode, and determine key sensitive equipment to be eliminated; Conduct an elimination feasibility assessment on the key sensitive equipment to be eliminated, and determine an elimination plan for the key sensitive equipment to be eliminated; wherein the elimination plan is used to instruct the elimination of the key sensitive equipment to be eliminated to ensure the safe and stable operation of the nuclear power plant.

2. The method according to claim 1, characterized in that The failure mode type also includes a time failure mode, and the failure corresponding to the time failure mode is related to the running time; The method further comprises: For the key sensitive equipment whose failure mode type is a time failure mode, a regular maintenance plan for the key sensitive equipment is output; wherein the regular maintenance plan for the key sensitive equipment is used for preventive management of the nuclear power plant.

3. The method according to claim 1, characterized in that: The performing of failure mode analysis on the key sensitive device to obtain the failure mode type corresponding to the key sensitive device includes: Obtaining a list of failure modes of the key sensitive equipment; An aging analysis is performed on the failure mode list to determine the failure mode type corresponding to the key sensitive equipment.

4. The method according to claim 1, characterized in that The step of performing risk analysis on the key sensitive equipment whose failure mode type is a random failure mode to determine the key sensitive equipment to be eliminated includes: According to the equipment attributes of the key sensitive equipment of the random failure mode, query is performed in the nuclear power plant shutdown event library to obtain the event number; When the number of events is greater than a preset risk number threshold, it is determined to be a key sensitive device to be eliminated.

5. The method according to claim 4, characterized in that The feasibility assessment of eliminating the key sensitive equipment to be eliminated is performed to determine the elimination plan of the key sensitive equipment to be eliminated, including: Analyze the equipment attributes of the key sensitive equipment to be eliminated and the nuclear power plant shutdown event library to obtain the failure loss of the key sensitive equipment to be eliminated; Corresponding analysis is performed to obtain the elimination cost of eliminating the key sensitive equipment to be eliminated according to each preset elimination plan; An elimination plan for the key sensitive equipment to be eliminated is determined based on the elimination cost and the failure loss.

6. The method according to claim 1, characterized in that The nuclear power plant equipment is more than two; the obtaining of operating data of the nuclear power plant equipment and determining key sensitive equipment according to the operating data includes: If it is determined based on the operating data of the nuclear power plant equipment that a single failure of the nuclear power plant equipment causes a shutdown event, the nuclear power plant equipment is determined to be a key sensitive equipment.

7. A device for eliminating key sensitive equipment in a nuclear power plant, characterized in that: The device comprises: A key sensitive equipment determination module is used to obtain operation data of nuclear power plant equipment, wherein the nuclear power plant equipment includes a minimum equipment unit and a minimum device unit constituting the minimum equipment unit. In the order from the source of the shutdown event to the minimum unit, if it is determined according to the operation data that a single fault causes the shutdown event, it is determined to be a key sensitive equipment; The elimination necessity analysis module is used to perform a failure mode analysis on the key sensitive equipment to obtain the failure mode type corresponding to the key sensitive equipment; wherein the failure mode type includes a time failure mode and a random failure mode, the failure corresponding to the time failure mode is related to the running time, and the failure corresponding to the random failure mode has no obvious relationship with the running time; perform a risk analysis on the key sensitive equipment whose failure mode type is a random failure mode, and determine the key sensitive equipment to be eliminated; The elimination feasibility assessment module is used to conduct an elimination feasibility assessment on the key sensitive equipment to be eliminated and determine an elimination plan for the key sensitive equipment to be eliminated; wherein the elimination plan is used to instruct the elimination of the key sensitive equipment to be eliminated to ensure the safe and stable operation of the nuclear power plant.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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