Design method of human-machine interface for accident handling guideline of nuclear power plant

Abstract

The present invention provides a design method for a human-machine interface of a nuclear power plant accident handling guideline, including: classifying and processing the instructions of traditional unstructured guidelines; analyzing the parameter requirements of each guideline instruction; designing a guideline flow chart according to the logical sequence of steps of traditional unstructured guidelines, as well as the category and required parameters of instructions; and processing special situations, converting warnings and notes in the guidelines into instructions. The present invention associates unstructured guidelines, thereby improving the work efficiency of modifying and confirming guidelines. The efficiency and quality of guideline computerization are improved through a unified and standardized guideline computerization solution, and the performance of digital guidelines is guaranteed.

Description

Technical Field

[0001] The invention belongs to nuclear power plant design technology, and in particular relates to a design method for a nuclear power plant accident handling guideline human-machine interface. Background Art

[0002] The Nuclear Power Plant Accident Handling Guidelines are important design documents used to guide the development of accident handling procedures. They describe the nuclear power plant accident handling strategy and the power plant design information required to implement the strategy, and are related to the operational safety of the nuclear power plant.

[0003] The confirmation of accident handling guidelines is an important link in the guideline development process. Through the confirmation work, on the one hand, it can be confirmed that the guideline system can completely cover all accidents in the initial event list determined at the beginning of the design. On the other hand, it can be confirmed that the strategies of each guideline can successfully handle and mitigate the corresponding accidents and bring the power plant into a safe state.

[0004] In order to ensure the completeness of the coverage of the guidelines and the diagnosability of all accidents in the list of initiating events, an important step in the confirmation work is to use the design verification platform of Hualong One to conduct simulation experiments. However, this step has the following problems:

[0005] (1) The cost of training operators who perform confirmation work is high. The personnel need to receive training on the use of the design verification platform and confirmation work, and must be power plant operators or equivalent engineers.

[0006] (2) The efficiency of the operators performing the confirmation work is low. An operator can only complete the confirmation work of one guideline at a time and cannot perform the confirmation work of multiple guidelines at the same time.

[0007] (3) Guideline optimization is cumbersome. When a part of a guideline needs to be optimized and modified, it is necessary to search all the guidelines, find the relevant content, and modify them one by one.

[0008] Therefore, the new generation of pressurized water reactor nuclear power plants will adopt computerized guidelines, computerize the guidelines, and realize the function of computer automatic execution of guidelines. However, due to the lack of research content in the field of computerized guidelines, there is still a lack of experience in the computerization process of unstructured guidelines. Simply digitizing the guidelines cannot achieve the association between guidelines. Guidelines are diverse, with many instructions and complex operations. There is a lack of a method to convert the format of unstructured guidelines into a format that can be understood by computers. Relying solely on manual experience to computerize traditional guidelines without a unified and standardized process will lead to complex interfaces between guidelines and fail to meet the needs of simplicity. Summary of the invention

[0009] The purpose of the present invention is to provide a design method for a human-machine interface of a nuclear power plant accident handling guideline in view of the problems existing in the prior art, so as to realize the computerized processing of unstructured guidelines in a fast and standardized manner.

[0010] The technical solution of the present invention is as follows: A design method for a human-machine interface of a nuclear power plant accident handling guideline, comprising:

[0011] (1) Categorize the instructions of traditional unstructured guidelines;

[0012] (2) Analyze the parameter requirements of each guideline instruction;

[0013] (3) Design a guideline flow chart based on the logical sequence of traditional unstructured guideline steps, as well as the types of instructions and required parameters;

[0014] (4) Handle special situations and convert warnings and cautions in the guidelines into instructions.

[0015] Further, in the design method of the human-machine interface of the nuclear power plant accident handling guideline as described above, the categories of the guideline instructions in step (1) include:

[0016] Activate, used to activate a guideline, including verbs and parameter names. The parameter name is the guideline name or number.

[0017] Execute, used to execute an action, including verbs and parameter names. Verbs include open verbs, close verbs, parameter adjustment verbs, and other operation verbs.

[0018] Check, used to judge a certain condition and check the process status, including verbs, parameter names and parameter requirements;

[0019] Temporary jump, used to automatically jump to a specific step in the guideline, including verb and parameter name, the verb is jump, and the parameter name is the step number of the guideline;

[0020] Jump, used to automatically jump to other guidelines, including verbs and parameter names, the verb is jump, and the parameter name is the guideline name or number;

[0021] Return, used to return to the position where the previous "temporary jump" instruction ended, used in conjunction with the temporary jump instruction;

[0022] Wait, used to pause entering the next instruction until the specified time is over or the predetermined process state is reached;

[0023] Others, used to remind or guide follow-up work through information;

[0024] End, used to terminate a guideline and output the results.

[0025] Furthermore, in the design method of the human-machine interface of the nuclear power plant accident handling guideline as described above, in step (2), the input required for each guideline instruction is clarified by analyzing the parameter requirements, and the parameter names and parameter requirements in the traditional instruction expression are extracted;

[0026] The categories of the parameter names include: process variables and entity variables, the process variable category is a general measurement parameter, and the entity variable category is the name or number of a specific device or component;

[0027] The parameter requirement categories include: parameter size, parameter trend and parameter state, wherein parameter size and parameter trend correspond to process variables, and parameter state corresponds to entity variables.

[0028] Furthermore, in the design method of the human-machine interface of the nuclear power plant accident handling guideline as described above, in step (3), when the parameter requirement category is parameter status, the description of the parameter status is converted into a computer-readable language.

[0029] Furthermore, in the design method of the human-machine interface of the nuclear power plant accident handling guideline as described above, in step (4), the information reminder for the executor is designed to be a pop-up attention box.

[0030] The beneficial effects of the present invention are as follows: The design method of the human-machine interface of the nuclear power plant accident handling guideline provided by the present invention associates the unstructured guidelines, thereby improving the work efficiency of modifying and confirming the guideline. The efficiency and quality of the guideline computerization are improved through a unified and standardized guideline computerization solution, and the performance of the digital guideline is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of the design method of the human-machine interface of the nuclear power plant accident handling guideline of the present invention;

[0032] Figure 2 A flowchart for computerizing the guideline according to the logical sequence of guideline steps, as well as the types of instructions and required parameters for the present invention;

[0033] Figure 3 The computerized flow chart of the guideline for "steam generator heat transfer tube rupture and pressurizer pressure loss control" in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention 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 invention and are not used to limit the present invention.

[0035] The new generation of pressurized water reactor nuclear power plants will use computerized guidelines, digitize the guidelines, and realize the function of computer automatic execution of guidelines. When confirming guidelines, multiple guidelines can be run in parallel by computer, and no human operation is required during the operation, thereby increasing the efficiency of guideline confirmation and reducing the workload of confirmation staff.

[0036] When guidelines need to be confirmed, the confirmation staff only needs to check the digital guidelines to ensure that they are consistent with the design, start the program to automatically run the guidelines, and collect the results after running for analysis. When the content of the guidelines needs to be optimized and modified, only one content needs to be modified, and the program can automatically modify all related parts, reducing the tedious modification work, and finally export the optimized guidelines into PDF format for submission. Computerized guidelines can improve the efficiency of confirmation and subsequent optimization.

[0037] An important step in computerizing guidelines is to convert traditional unstructured guidelines into computer-readable digital guidelines. If the guidelines are simply digitized, the association between the guidelines cannot be achieved. The present invention proposes a design method for a human-machine interface for nuclear power plant accident handling guidelines, which can quickly and standardizedly computerize existing unstructured guidelines.

[0038] like Figure 1 As shown, the design method of the nuclear power plant accident handling guide human-machine interface provided by the present invention includes the following steps:

[0039] (1) Classification of traditional guideline steps

[0040] Traditional guidelines are unstructured information. Each guideline includes several steps, and each step includes several instructions. An instruction is a sentence, including a verb and an execution object, i.e., parameter name. Some instructions also include an adjective after the execution object, i.e., parameter requirement. The first step in guideline computerization is to convert traditional guidelines into a form that computers can understand, that is, to classify and process traditional guideline instructions. Traditional guideline instructions can be roughly divided into the following categories:

[0041] -Activate: When the computer receives this command, it will activate a certain guideline. This command is a new command for computerized guidelines, including verbs and parameter names. The parameter name is the guideline name or number. This command appears in the following two situations:

[0042] When the executor manually starts a guideline, an "activate" instruction is added before the traditional guideline instruction is executed, so that the computer can start the guideline.

[0043] When the previous instruction is a "jump" instruction, an "activate" instruction is added to activate the guidelines after the jump.

[0044] -Execute: When the computer receives this instruction, it will automatically perform an action, such as opening a valve, etc. The verb of this instruction belongs to the following types:

[0045] Open verbs, such as "open", "restart", etc.

[0046] Verbs for closing, such as "close", "stop operation", etc.

[0047] Parameter adjustment verbs, such as "adjust", "adjust", "increase", "increase", "reduce", "decrease", "set", etc., usually include parameter requirements after the verb and parameter name.

[0048] Other operational verbs, such as "execute", "reset", "maintain", etc.

[0049] - Check: When the computer receives this instruction, it will automatically judge a certain condition and automatically check a certain process status. The instruction includes a verb, parameter name, and parameter requirement. When the instruction description has the following situation, it can be classified as a "check" instruction:

[0050] The verb of the command is "confirm", "check", etc. In this case, after the "check" command, a guideline command of "temporary jump" or "jump" is generally performed according to the check result.

[0051] When conditional judgment words such as "if" and "if" appear in an instruction, the instruction is divided into two: a "check" instruction and an "execute" instruction.

[0052] When there are two verbs in an instruction and the second verb is an indicator of the end of the first verb, such as "drop to", the instruction is divided into two instructions: "execute" and "check".

[0053] -Temporary Jump: When the computer receives this instruction, it will automatically jump to a specific step in this guideline. It usually has a hidden step "return" to return to the position where the "temporary jump" ends and continue to the next step of the "temporary jump". This instruction includes a verb and a parameter name. The verb is usually "jump", and the parameter name is the step number of this guideline.

[0054] -Jump: When the computer receives this command, it will automatically jump to other guidelines and will not return. The verb of this command is generally "jump", and the parameter name of this command is the name or number of a certain guideline.

[0055] -Return: When the computer receives this instruction, it will return to the position where the previous "temporary jump" instruction ended. This instruction is usually paired with "temporary jump", and its verb is "return".

[0056] -Wait: When the computer receives this instruction, it will pause and enter the next instruction, and continue to wait until a certain specified time ends or a certain process state is reached. The verb of this instruction is "wait".

[0057] - Others: This type of instruction is an informational instruction, which serves the purpose of reminding or guiding the subsequent work. For example: "Seek long-term recovery measures from the technical support center." During the execution of the computerized guidelines, this instruction will provide guidance or reminders by popping up a "reminder box" during the execution process, and is not listed in the computer automatic execution logic diagram.

[0058] -End: When the computer receives this instruction, it will terminate a guideline and output the result. This instruction is a new instruction of the computerized guideline and is executed after the last instruction of the traditional guideline ends.

[0059] The above-mentioned guideline instruction classification basically covers all traditional guidelines and meets the guideline classification requirements, but it can be appropriately added if necessary.

[0060] The classification process of traditional guidelines uses the above definition to classify each instruction of the guideline and provides the classification basis verbs to form the following table:

[0061] Step Number Instruction number Category Name in accordance with

[0062] (2) Analyze parameter requirements one by one

[0063] Analyzing parameter requirements is to clarify the input required for each guideline instruction, that is, to extract the parameter names and parameter requirements in the traditional instruction description. First, it is necessary to clarify the parameter name categories, including: process variables and entity variables. The process variable category is a general measurement parameter, including: temperature, pressure, flow, etc. The entity variable category is the name or number of a specific device or component, and the equipment or components include: pumps, valves, etc.

[0064] Subsequently, if there are parameter requirements, the parameter requirement categories need to be clarified, which include: parameter size, parameter trend and parameter status. The corresponding parameter names for parameter size and parameter trend are process variables. Parameter size refers to comparison with specific values, such as: greater than [-3.26m], greater than [20°C], etc. If there is "to" before the value, it is equivalent to equal to, such as "drop to [+0.94m]" is equal to [+0.94m]. Parameter trend refers to the trend of change, such as: rise, fall, etc., which is generally calculated by parameter slope in computerized guidelines. The corresponding parameter name for parameter status is entity variable, which refers to the status of the device / component, such as: open state, closed state, etc.

[0065] This method is reflected in the following table:

[0066] Instruction number Parameter name type Parameter name Parameter Requirement Category Parameter requirements

[0067] (3) Computerized flow chart of guidelines

[0068] like Figure 2 As shown, according to the logical sequence of traditional guideline steps, the instruction categories and required parameters analyzed above, a guideline computerized flow chart is drawn. When the parameter requirement category is parameter status, it is converted into a language that the computer can understand, such as "broken pipe SG auxiliary water supply isolation" is converted into "broken pipe SG auxiliary water supply. Open state = 0".

[0069] (4) Handling of special situations

[0070] Continuous step summaries, warnings and notes: For the warnings and notes in the original guidelines, computerization can be achieved in the following two ways:

[0071] a) According to the newly formulated rules, warnings and cautions are converted into instructions. For example, "If the EMS attached diesel engine is in the replacement state, it is the EMS that orders the local shutdown" can be converted into a "check" instruction + "execute" instruction after computerization.

[0072] b) Replace with a special operation mode. For example, "the SG from the broken pipe is injected back into the primary circuit, which will reduce the boron concentration in the primary circuit" is an information reminder to the executive personnel, which can be reminded by popping up a note box.

[0073] Example

[0074] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below by taking the guideline of "steam generator heat transfer tube rupture and pressurizer pressure loss control" as an example.

[0075] (1) Classification of traditional guidelines and instructions

[0076]

[0077]

[0078] (2) Analyze variable requirements one by one

[0079]

[0080] (3) Figure 3 As shown, a computerized flow chart of the guideline is drawn according to the logical sequence of steps of the guideline "Steam generator heat transfer tube rupture with concurrent regulator pressure loss control" and the instruction categories and required parameters analyzed above.

[0081] (4) Handling of special situations

[0082] Continuous Step Summary, Warnings and Notes:

[0083] -SG water level is rising uncontrollably, which means it is rising and cannot be stopped by the operator in the main control room:

[0084] Repeat the above steps (1)-(3) to convert the attention into instructions.

[0085] - Maintain RCS cooling rate:

[0086] Repeat the above steps (1)-(3) to convert the attention into instructions.

[0087] - The SG from the broken pipe is injected back into the primary circuit, which will reduce the boron concentration in the primary circuit:

[0088] Reminders are given by popping up a note box.

[0089] It will be apparent to those skilled in the art that the structure of the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0090] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A design method for a human-machine interface of a nuclear power plant accident handling guideline, characterized in that: include: (1) Categorize the instructions of traditional unstructured guidelines; the categories of guideline instructions include: Activate, used to activate a guideline, including verbs and parameter names. The parameter name is the guideline name or number. Execute, used to execute an action, including verbs and parameter names. Verbs include open verbs, close verbs, parameter adjustment verbs, and other operation verbs. Check, used to judge a certain condition and check the process status, including verbs, parameter names and parameter requirements; Temporary jump, used to automatically jump to a specific step in the guideline, including verb and parameter name, the verb is jump, and the parameter name is the step number of the guideline; Jump, used to automatically jump to other guidelines, including verbs and parameter names, the verb is jump, and the parameter name is the guideline name or number; Return, used to return to the position where the previous "temporary jump" instruction ended, used in conjunction with the temporary jump instruction; Wait, used to pause entering the next instruction until the specified time is over or the predetermined process state is reached; Others, used to remind or guide follow-up work through information; End, used to terminate a guideline and output the results; (2) Analyze the parameter requirements of each guideline instruction, clarify the input required for each guideline instruction by analyzing the parameter requirements, and extract the parameter names and parameter requirements in the traditional instruction description; The categories of the parameter names include: process variables and entity variables, the process variable category is a general measurement parameter, and the entity variable category is the name or number of a specific device or component; The parameter requirement categories include: parameter size, parameter trend and parameter state, wherein parameter size and parameter trend correspond to process variables, and parameter state corresponds to entity variables; (3) Design a guideline flow chart based on the logical sequence of traditional unstructured guideline steps, as well as the types of instructions and required parameters; (4) Handle special situations and convert warnings and cautions in the guidelines into instructions.

2. The design method of the human-machine interface of the nuclear power plant accident handling guideline according to claim 1, characterized in that: In step (3), when the parameter requirement category is parameter status, the description of the parameter status is converted into a computer-readable language.

3. The design method of the human-machine interface of the nuclear power plant accident handling guideline according to claim 1, characterized in that: In step (4), the information reminder for the executor is designed to be a pop-up attention box.

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