CN117522108A - Nuclear power plant configuration risk management methods, systems and computer storage media - Google Patents

Abstract

The invention relates to a method, a system and a computer storage medium for managing configuration risk of a nuclear power plant, wherein the method for managing the configuration risk of the nuclear power plant comprises the following steps: when a specific event occurs, acquiring the current running state of the nuclear power plant in real time, and judging whether the current running state meets the preset entering condition or not; when the entering condition is met, carrying out configuration risk evaluation according to a risk model of the nuclear power plant, and obtaining a current evaluation result; determining a current risk zone corresponding to the current risk level value according to a specific event, a plurality of preset risk zones and the risk level range value corresponding to each risk zone; acquiring current risk management measures corresponding to current risk areas according to the risk management measures corresponding to each risk area under different preset specific events; outputting the current risk area and the current risk management measure. By the technical scheme, the method and the device can be suitable for the condition of multiple failures of equipment/systems of the nuclear power plant, so that the configuration risk management flow of the nuclear power plant is perfected and improved.

Description

Nuclear power plant configuration risk management methods, systems and computer storage media

Technical field

The invention relates to the field of nuclear safety, and in particular to a nuclear power plant configuration risk management method, system and computer storage medium.

Background technique

Nuclear power plants implement the concept of defense in depth during the design and operation process, and set up a large number of dedicated safety facilities and their supporting systems to prevent and mitigate design basis accidents, and use technical specifications to manage the configuration of these systems. However, the technical specifications Usually it is a risk control guideline for the failure of a single equipment/system. However, given the diversity, complexity and timeliness of nuclear power plant configurations, technical specifications cannot effectively control the risk of multiple failures.

Contents of the invention

The technical problem to be solved by the present invention is to provide a nuclear power plant configuration risk management method, system and computer storage medium in view of the shortcomings of the existing technology that cannot effectively control the risk of multiple failures.

The technical solution adopted by the present invention to solve the technical problem is to construct a nuclear power plant configuration risk management method, including:

Step S10: When a specific event occurs, obtain the current operating status of the nuclear power plant in real time, and determine whether the preset entry conditions are currently met based on the operating status, where the specific event includes configuration changes in the nuclear power plant, nuclear power plant operations planned maintenance;

Step S20: When the entry conditions are met, perform a configuration risk evaluation according to the risk model of the nuclear power plant to obtain the current evaluation results, where the evaluation results include a risk level value;

Step S30, determine the current risk area corresponding to the current risk level value based on the specific event, a plurality of preset risk areas and the risk level range value corresponding to each risk area;

Step S40: Obtain the current risk management measures corresponding to the current risk area according to the preset risk management measures corresponding to each risk area under different specific events;

Step S50: Output the current risk area and current risk management measures.

Preferably, judging whether preset entry conditions are met according to the operating status includes:

Step S11: Determine the current affected equipment according to the operating status. The affected equipment includes out-of-service equipment or equipment involved in test maintenance activities;

Step S12: Determine whether the preset entry conditions are met based on the pre-stored first list, second list, third list and the affected equipment. The first list is related to the nuclear power plant configuration risk management program. A list of systems/equipment/structures, the second list is a list of systems/equipment/structures related to the implementation program of maintenance rules for nuclear power plants, and the third list is a list of equipment related to at least one technical specification.

Preferably, the step S12 includes:

Determine whether the out-of-service equipment is equipment that exists in both the first list and the third list. If it exists at the same time, determine whether the management measures for the out-of-service equipment in the technical specification are not Shut down and retreat immediately, if not, make sure the preset entry conditions are met; and/or,

Determine whether the equipment involved in the test maintenance activity exists in the first list, and if so, determine that the preset entry conditions are met; and/or,

Determine whether the equipment involved in the test maintenance activity exists in the second list, and if so, determine that the preset entry conditions are met;

It is determined whether the out-of-service equipment belongs to the specific equipment related to the specific technical specifications in the third list, and if so, it is determined that the preset entry conditions are met.

Preferably, the risk level value includes an instantaneous risk level value and a cumulative risk level value;

The step S30 includes:

When the specific event is a configuration change of the nuclear power plant, determine the risk area corresponding to the current instantaneous risk level value based on the multiple preset risk areas and the instantaneous risk level range value corresponding to each risk area;

When the specific event is to carry out planned maintenance for the nuclear power plant, the risk area corresponding to the current cumulative risk level value is determined based on the preset multiple risk areas and the cumulative risk level range value corresponding to each risk area.

Preferably, the plurality of preset risk areas include an unacceptable risk area, a risk management area, and a normal control area;

In step S50, the step of outputting the determined risk area includes:

According to the colors corresponding to the plurality of risk areas, the color corresponding to the current risk area is determined, and the current risk area is displayed using the determined color.

Preferably, the evaluation results also include the allowed configuration time;

The step S40 includes:

When the specific event is a configuration change in a nuclear power plant, if the current risk area is an unacceptable risk area, the corresponding risk management measure is to immediately evacuate the unit to a safe state; if the current risk area is a risk management area, The corresponding risk management measures are to enter the operation decision-making process and track the troubleshooting of out-of-service equipment within the allowed configuration time; if the current risk area is a normal control area, the corresponding risk management measures are to perform daily work normally. ;

When the specific event described is a planned maintenance for a nuclear power plant, if the current risk area is an unacceptable risk area, the corresponding risk management measure is to immediately adjust the maintenance plan; if the current risk area is a risk management area, then the corresponding risk management measure is The corresponding risk management measure is to enter the overhaul decision-making process and track subsequent plan adjustments within the allowed configuration time; if the current risk area is a normal control area, the corresponding risk management measure is to carry out maintenance according to the plan.

Preferably, after step S50, it also includes:

Step S60: Based on the current operating status of the nuclear power plant, determine whether the preset exit conditions are currently met. If so, end.

Preferably, in step S60, it is determined whether preset exit conditions are currently met, including at least one of the following:

Maintenance activities for the out-of-service equipment have been completed and no new specific events have occurred within a specific period of time;

The preventive and corrective maintenance activities for the equipment involved in the test maintenance activities have been completed, and no new specific events occurred within a specific period of time;

The systems/equipment/structures in the first list are all in a usable state.

Nuclear power plant enters emergency accident management procedures.

The present invention also constructs a nuclear power plant configuration risk management system, which includes a processor and a memory storing a computer program. When the processor executes the computer program, it implements the above steps of the nuclear power plant configuration risk management method.

The present invention also constructs a computer storage medium, which stores a computer program. When executed by a processor, the computer program implements the steps of the nuclear power plant configuration risk management method described above.

In the technical solution provided by the present invention, when a specific event occurs, it is first judged based on the operating status of the nuclear power plant whether it is necessary to enter the nuclear power plant configuration risk management process. If necessary, the configuration risk level can be quantitatively assessed based on the risk model, and then based on The risk level value determines the corresponding risk area and risk management measures to guide users in risk control of nuclear power plant configuration. Compared with the existing method of using technical specifications, this technical solution is more suitable for multiple failures of equipment/systems in nuclear power plants. Therefore, it improves and improves the configuration risk management process of nuclear power plants.

Description of drawings

In order to explain the embodiments of the present invention more clearly, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary people in the art, For technical personnel, other drawings can also be obtained based on these drawings without exerting creative work. In the attached picture:

Figure 1 is a flow chart of Embodiment 1 of the nuclear power plant configuration risk management method of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Figure 1 is a flow chart of Embodiment 1 of the nuclear power plant configuration risk management method of the present invention. The nuclear power plant configuration risk management method in this embodiment includes the following steps:

Step S10: When a specific event occurs, obtain the current operating status of the nuclear power plant in real time, and determine whether the preset entry conditions are currently met based on the operating status, where the specific event includes configuration changes in the nuclear power plant, nuclear power plant operations planned maintenance;

In this step, it should be noted that when the nuclear power plant configuration is changed or planned maintenance is carried out, nuclear power plant configuration risk management needs to be carried out. However, in view of the large number of systems and equipment in the nuclear power plant, in order to effectively conduct risk assessment and management , the scope of configuration risk management needs to be determined. Specifically, it can be judged whether it is necessary to enter the configuration risk management process based on the actual operating status of the nuclear power plant. It should be noted that the actual operating status can include the situation where a single device/system is unavailable. , may also include situations where multiple devices/systems are unavailable.

Step S20: When the entry conditions are met, perform a configuration risk evaluation according to the risk model of the nuclear power plant to obtain the current evaluation results, where the evaluation results include a risk level value;

In this step, the real-time risk model (PSA) of the nuclear power plant can be used to perform configuration risk assessment. For example, in one embodiment, the PSA model is first modeled, and after a specific event occurs, the fault tree and events are re-analyzed through Boolean operations. The tree union is used to obtain a new minimum cut set set, and a new CDF/LERF result (risk level value) and related risk information are obtained based on the new minimum cut set set. In another embodiment, a minimum cut set library can also be established first, and after a specific event occurs, the minimum cut set can be quantitatively calculated again to obtain the risk level of the nuclear power plant and provide corresponding risk information.

In addition, it should be noted that one operating state of a nuclear power plant corresponds to a risk level value. For example, at the beginning, only one equipment is unavailable, corresponding to a risk level value. After a period of time, another equipment becomes unavailable at the same time. If it is used, then it corresponds to another risk level value. After a period of time, the initially unavailable equipment becomes available again, and then it corresponds to a different risk level value.

Step S30, determine the current risk area corresponding to the current risk level value based on the specific event, a plurality of preset risk areas and the risk level range value corresponding to each risk area;

In this step, the number of preset multiple risk zones may be three, for example: risk unacceptable zone, risk management zone, normal control zone. Of course, the number of preset multiple risk zones may also be four, for example The risk management area can be further subdivided into two areas according to the level of risk. Moreover, each risk area corresponds to a risk level range value. In this way, the current risk area can be determined based on the risk evaluation results and the risk level range values corresponding to each risk area.

Step S40: Obtain the current risk management measures corresponding to the current risk area according to the preset risk management measures corresponding to each risk area under different specific events;

Step S50: Output the current risk area and current risk management measures.

In the technical solution of this embodiment, when a specific event occurs, it is first determined whether it is necessary to enter the nuclear power plant configuration risk management process based on the operating status of the nuclear power plant. If necessary, the configuration risk level can be quantitatively assessed based on the risk model, and then based on the risk The level value determines the corresponding risk area and risk management measures to guide users in risk control of nuclear power plant configuration. Compared with the existing method of using technical specifications, this technical solution is more suitable for multiple failures of equipment/systems in nuclear power plants. Therefore, it improves and improves the configuration risk management process of nuclear power plants.

Further, in an optional embodiment, in step S10, determining whether preset entry conditions are met according to the operating status includes:

Step S11: Determine the current affected equipment according to the operating status. The affected equipment includes out-of-service equipment or equipment involved in test maintenance activities;

Step S12: Determine whether the preset entry conditions are met based on the pre-stored first list, second list, third list and the affected equipment. The first list is related to the nuclear power plant configuration risk management program. A list of systems/equipment/structures, the second list is a list of systems/equipment/structures related to the implementation program of maintenance rules for nuclear power plants, and the third list is a list of equipment related to at least one technical specification.

In this embodiment, the SSC (System, component, structure, system/equipment/structure) list of CRMP (Configuration Risk Management Program) and the SSC list of MR (Nuclear Power Plant Maintenance Regulation Implementation Program) can be imported into the system in advance, that is, , the first list and the second list. Of course, it is also necessary to import the list of related equipment involved in various types of technical specifications into the system in advance, that is, the third list. When judging whether the preset entry conditions are currently met, corresponding triggers are set, such as trigger Tripper-CRMP and trigger Tripper-MR. Based on these lists, the currently out-of-service equipment and equipment involved in test maintenance activities are Filter to determine whether the configuration risk management process is triggered.

In a specific embodiment, the entry conditions include the following four:

1. If the equipment in the technical specifications is randomly unavailable, and the affected equipment falls within the scope of the PSA model, except for the immediate shutdown and evacuation required in the technical specifications, the configuration risk management process should be entered in all other situations;

2. Carry out risk assessment for planned maintenance activities included in the configuration risk management scope of SSC;

3. The requirements for risk assessment and risk management in the implementation outline of nuclear power plant maintenance rules;

4. When entering into risk management technical specifications using Risk Guideline Completion Time (RICT), it should be noted that this type of technical specification is a specific type of technical specification, which specifies the length of time required to restore the equipment after it fails. It is not fixed, it is calculated.

Based on the above entry conditions, step S12 specifically includes:

Determine whether the out-of-service equipment is equipment that exists in both the first list and the third list. If it exists at the same time, determine whether the management measures for the out-of-service equipment in the technical specification are not Shut down and retreat immediately, if not, make sure the preset entry conditions are met; and/or,

Determine whether the equipment involved in the test maintenance activity exists in the first list, and if so, determine that the preset entry conditions are met; and/or,

Determine whether the equipment involved in the test maintenance activity exists in the second list, and if so, determine that the preset entry conditions are met;

It is determined whether the out-of-service equipment belongs to the specific equipment related to the specific technical specifications in the third list, and if so, it is determined that the preset entry conditions are met.

Further, in an optional embodiment, the risk level value includes an instantaneous risk level value and a cumulative risk level value. Furthermore, step S30 includes:

When the specific event is a configuration change of the nuclear power plant, determine the risk area corresponding to the current instantaneous risk level value based on the multiple preset risk areas and the instantaneous risk level range value corresponding to each risk area;

When the specific event is to carry out planned maintenance for the nuclear power plant, the risk area corresponding to the current cumulative risk level value is determined based on the preset multiple risk areas and the cumulative risk level range value corresponding to each risk area.

In this embodiment, based on the real-time risk model and risk monitoring tools of the nuclear power plant, according to the current configuration or expected configuration of the nuclear power plant, the affected systems, equipment and reasons for decommissioning can be input, risk assessment work can be carried out, and the current configuration of the nuclear power plant can be obtained. Or the expected risk level of allocation, including instantaneous risk (including CDF and LERF) and cumulative risk (ICDP and ILERP), etc., and provide a risk evaluation report. Then, the risk assessment results are compared with the predefined risk thresholds. Moreover, for different specific events, the risk level thresholds used in the comparison are also different. Specifically, the events that enter the configuration risk management process are first determined to be Operation configuration risk management or maintenance configuration risk management, and the risk threshold of operation configuration risk management is mainly transient risk (CDF/LERF); the risk threshold of maintenance configuration risk management is mainly cumulative risk (ICDP/ILERP).

Furthermore, in a specific embodiment, the instantaneous risk CDF/LERF increment and the cumulative risk ICDP and ILERP can be further calculated, where the core damage frequency increment ΔCDF under a specific state is equal to the CDF (reactor core damage frequency increment ΔCDF) under a specific state. The difference between the core damage frequency (core damage frequency) and the baseline CDF, the early massive radioactive release frequency increment ΔLERF is calculated in a similar way. The specific calculation formula is as follows:

ΔCDF _{configuration} =CDF _{point-in-time} –CDF _baseline

ΔLERF _{configuration} =LERF _{point-in-time} -LERF _baseline

Among them, CDF _{point-in-time} refers to the instantaneous risk level value at the current moment, which is usually calculated by risk monitoring tools or PSA software. CDF _baseline refers to the baseline risk level value when all equipment is available, that is, the zero maintenance risk level. value. Similarly, LERF _{point-in-time} and LERF _baseline are the current early massive radioactive release frequency and the zero-maintenance early massive radioactive release frequency respectively.

As for the increment of core damage probability under a specific state, the cumulative risk ICDP is equal to the core damage frequency increment multiplied by the relevant duration of the state, and the cumulative risk LERP is equal to the early large-scale radioactive release frequency increment multiplied by the relevant duration of the state. The specific calculation is The formula is as follows:

ICDP _config =ΔCDF _config ×T _config

ILERP _config =ΔLERF _config ×T _config .

Further, in an optional embodiment, the preset multiple risk areas include unacceptable risk areas, risk management areas, and normal control areas;

In step S50, the step of outputting the determined risk area includes:

According to the colors corresponding to the plurality of risk areas, the color corresponding to the current risk area is determined, and the current risk area is displayed using the determined color.

In a specific embodiment, different risk areas can be displayed in different colors. For example, a red area represents an unacceptable risk area; an orange or yellow area represents a risk management area; and a green area represents a normal control area.

Further, in an optional embodiment, the evaluation result also includes the allowable configuration time (ACT), where the ACT is calculated comprehensively from the cumulative risk and the instantaneous risk. Furthermore, step S40 includes:

When the specific event is a configuration change in a nuclear power plant, if the current risk area is an unacceptable risk area, the corresponding risk management measure is to immediately evacuate the unit to a safe state; if the current risk area is a risk management area, The corresponding risk management measures are to enter the operation decision-making process and track the troubleshooting of out-of-service equipment within the allowed configuration time; if the current risk area is a normal control area, the corresponding risk management measures are to perform daily work normally. ;

When the specific event described is a planned maintenance for a nuclear power plant, if the current risk area is an unacceptable risk area, the corresponding risk management measure is to immediately adjust the maintenance plan; if the current risk area is a risk management area, then the corresponding risk management measure is The corresponding risk management measure is to enter the overhaul decision-making process and track subsequent plan adjustments within the allowed configuration time; if the current risk area is a normal control area, the corresponding risk management measure is to carry out maintenance according to the plan.

In this embodiment, for the configuration change event that occurs in the nuclear power plant, that is, during the operation configuration risk management, if the risk enters the unacceptable zone, immediate measures need to be taken. If the reactor is in power operation mode, it must be shut down immediately. Withdraw; if you enter the risk management area, you need to take some corresponding risk management measures and risk compensation measures, and control the allowed configuration time (ACT) according to the cumulative risk threshold (ICDP/ILERP); if you enter the normal control area, you can Perform daily tasks normally. For planned maintenance events that occur in nuclear power plants, that is, when conducting maintenance configuration risk management, if the risk is unacceptable, active entry is not allowed, that is, preventive maintenance work in the red zone will no longer be arranged, and maintenance needs to be adjusted. plan; if it enters the risk management area, it is necessary to control ACT and take corresponding risk management and risk compensation measures, and evaluate the risk management measures; if it enters the normal control area, maintenance can be carried out according to the plan.

In a specific embodiment, regarding the operation configuration risk management process, it should also be noted that when the power plant is in normal operation, an operation abnormality occurs, that is, an unplanned failure of one or more safety-critical equipment (SSC within the scope of configuration risk management) occurs. ) is not available. In addition to implementing the supervisory measures stipulated in the technical specifications, it also describes the process for nuclear power plant operators to implement operational configuration risk management, including using risk monitor tools to quantitatively evaluate configuration risks and take action based on the areas where the risks are located. Corresponding risk management measures, specifically, risk areas can be divided into red areas, orange areas, yellow areas and green areas according to the risk level from high to low. If the operational configuration risk is in the green zone, just perform daily work normally. Generally, you are not allowed to enter the red zone. Risk management measures need to be taken immediately after entering the red zone. Entering the orange zone will enter the emergency elimination process and start the operation decision-making process. It should be noted that the emergency elimination process and operation decision-making process are both existing processes of the nuclear power plant. When entering the yellow zone, calculate and control ACT, that is, complete the operation time as soon as possible, shorten the unavailable time of the system/equipment, formulate corresponding risk management measures according to the requirements of the risk management matrix, and carry out evaluation.

In a specific embodiment, regarding the maintenance configuration risk management process, it should be noted that configuration risk assessment is carried out for power plant maintenance plans, including daily work plans, weekly rolling plans and overhaul production plans, especially those required in the maintenance rules outline. Risk assessment and management content, and then use the risk monitor tool to quantitatively evaluate the configuration risk, and take corresponding risk management measures according to the area where the risk is located. Specifically, the risk area can be divided into red area, orange area according to the risk level from high to low. Zone, yellow zone, green zone. If it is in the risk green zone, maintenance activities are performed normally; if it is in the risk management zone, the maintenance actions need to be completed as soon as possible. The allowed configuration time is determined by the cumulative risk limit calculation results. ACT is calculated and controlled, that is, through various resources, the ACT cannot be consumed completely, and compensation measures should be taken when necessary, and risk management measures should be evaluated; if it is in the risk red zone, immediate action must be taken to reduce risks. Normally, nuclear power plants are not allowed to proactively enter the risk red zone when formulating and implementing maintenance activities.

Further, in an optional embodiment, after step S50, it also includes:

Step S60: Based on the current operating status of the nuclear power plant, determine whether the preset exit conditions are currently met. If so, end.

Further, in step S60, it is determined whether the preset exit conditions are currently met, including at least one of the following:

Maintenance activities for the out-of-service equipment have been completed and no new specific events have occurred within a specific period of time;

The preventive and corrective maintenance activities for the equipment involved in the test maintenance activities have been completed, and no new specific events occurred within a specific period of time;

The systems/equipment/structures in the first list are all in a usable state.

Nuclear power plant enters emergency accident management procedures.

In this embodiment, after completing the operation configuration risk management or maintenance configuration risk management, if it is determined that the above conditions are met, the configuration risk management process can be exited.

The present invention also constructs a nuclear power plant configuration risk management system. The nuclear power plant configuration risk management system includes a processor and a memory storing a computer program. The processor realizes the above-mentioned nuclear power plant configuration risk when executing the computer program. Management method steps.

The present invention also constructs a computer storage medium, which stores a computer program. When executed by a processor, the computer program implements the above-mentioned steps of the nuclear power plant configuration risk management method.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the claims of the present invention.

Claims (10)

1. A method for managing configuration risk of a nuclear power plant, comprising:

step S10, when a specific event occurs, acquiring the current running state of the nuclear power plant in real time, and judging whether the current running state meets a preset entering condition or not according to the running state, wherein the specific event comprises the occurrence of configuration change of the nuclear power plant and the development of planned maintenance of the nuclear power plant;

step S20, when the entering condition is met, carrying out configuration risk evaluation according to a risk model of the nuclear power plant so as to obtain a current evaluation result, wherein the evaluation result comprises a risk level value;

step S30, determining a current risk zone corresponding to the current risk level value according to the specific event, a plurality of preset risk zones and the risk level range value corresponding to each risk zone;

step S40, acquiring current risk management measures corresponding to the current risk areas according to the risk management measures corresponding to each risk area under different preset specific events;

step S50, outputting the current risk area and the current risk management measures.

2. The method of claim 1, wherein determining whether a preset entry condition is satisfied according to the operating state comprises:

step S11, determining current affected equipment according to the running state, wherein the affected equipment comprises equipment involved in out-of-service equipment or experimental maintenance activities;

step S12, determining whether a preset entry condition is satisfied according to a first list, a second list, a third list and the affected device, where the first list is a system/device/structure list related to a configuration risk management outline of a nuclear power plant, the second list is a system/device/structure list related to an implementation outline of a maintenance rule of the nuclear power plant, and the third list is a device list related to at least one technical specification.

3. The method for managing risk of configuration of a nuclear power plant according to claim 2, wherein said step S12 comprises:

judging whether the shutdown equipment is equipment which exists in the first list and the third list at the same time, if so, judging whether the management measures aiming at the shutdown equipment in the technical specification are not immediately shutdown and back-off, and if not, determining that a preset entry condition is met; and/or the number of the groups of groups,

judging whether equipment related to the test maintenance activity exists in the first list, and if so, determining that a preset entering condition is met; and/or the number of the groups of groups,

judging whether equipment related to the test maintenance activity exists in the second list, if so, determining that a preset entering condition is met;

judging whether the out-of-service equipment belongs to specific equipment related to specific technical specifications in the third list, and if so, determining that a preset entering condition is met.

4. The method of claim 1, wherein the risk level values include an instantaneous risk level value and an accumulated risk level value;

the step S30 includes:

when the specific event is a configuration change of the nuclear power plant, determining a risk zone corresponding to the current instantaneous risk level value according to a plurality of preset risk zones and the instantaneous risk level range value corresponding to each risk zone;

and when the specific event is the planned maintenance of the nuclear power plant, determining a risk zone corresponding to the current accumulated risk level value according to a plurality of preset risk zones and the accumulated risk level range value corresponding to each risk zone.

5. The method for managing risk of configuring a nuclear power plant according to claim 1, wherein the preset plurality of risk areas includes a risk unacceptable area, a risk management area, a normal control area;

in the step S50, the step of outputting the determined risk area includes:

and determining the color corresponding to the current risk area according to the colors corresponding to the multiple risk areas respectively, and displaying the current risk area by adopting the determined color.

6. The nuclear power plant configuration risk management method of claim 5, wherein the evaluation result further includes a permissible configuration time;

the step S40 includes:

when the specific event is that the configuration of the nuclear power plant is changed, if the current risk area is a risk unacceptable area, the corresponding risk management measure is that the unit is immediately retracted to a safe state; if the current risk area is a risk management area, the corresponding risk management measures are entering an operation decision flow and tracking fault processing of the out-of-service equipment in the allowed configuration time; if the current risk area is a normal control area, the corresponding risk management measure is to normally execute daily work;

when the specific event is the planned maintenance of the nuclear power plant, if the current risk area is a risk unacceptable area, the corresponding risk management measure is to immediately adjust the maintenance plan; if the current risk area is a risk management area, the corresponding risk management measures are entering a major repair decision flow and tracking subsequent plan adjustment in the allowed configuration time; if the current risk area is a normal control area, the corresponding risk management measures are to carry out maintenance according to the plan.

7. The method of claim 2, further comprising, after step S50:

and step S60, judging whether the current state meets the preset exit condition according to the current running state of the nuclear power plant, and if so, ending.

8. The method according to claim 7, wherein in step S60, it is determined whether a preset exit condition is currently satisfied, including at least one of:

the maintenance activities for the out-of-service equipment have been completed and no new specific event has occurred within a specific time;

preventive, corrective maintenance activities for the equipment involved in the trial maintenance activities have completed and no new specific event has occurred within a specific time;

the systems/devices/structures in the first list are all in a usable state.

9. A nuclear power plant configuration risk management system comprising a processor and a memory storing a computer program, wherein the processor, when executing the computer program, implements the steps of the nuclear power plant configuration risk management method of any of claims 1-8.

10. A computer storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the nuclear power plant configuration risk management method of any of claims 1-9.