CN111898808B - Nuclear power plant in-service inspection data management and analysis method - Google Patents
Nuclear power plant in-service inspection data management and analysis method Download PDFInfo
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Abstract
The invention relates to a nuclear power plant in-service inspection data management and analysis method, which comprises the following steps: acquiring a nuclear power plant inspection plan; compiling a technical scheme for inspection; compiling a sub-item inspection report based on the inspection data; judging whether common mode defects exist in similar equipment in the nuclear power plant, if so, calling a history processing scheme, and if not, generating a first type notification list; judging whether the wall thickness of the pressure container has a thinning trend, if so, calculating the annual average thinning rate of the wall thickness of the pressure container and the age required by thinning the wall thickness of the pressure container to an unqualified limit value, generating a second type notification bill, and if not, generating a third type notification bill; and adjusting the nuclear power plant inspection plan according to various notices to obtain a new nuclear power plant inspection plan. The invention can scientifically manage and analyze the inspection data of the pressure vessel of the nuclear power plant, thereby promoting the optimization and adjustment of the inspection plan of the nuclear power plant, and further ensuring the safe operation of the nuclear power plant timely and effectively.
Description
Technical Field
The invention belongs to the field of nuclear power plant data and plan management, and particularly relates to an in-service inspection data management and analysis method of a nuclear power plant, which is used for managing and analyzing inspection data obtained by in-service inspection of a pressure vessel in the nuclear power plant so as to optimally adjust a nuclear power plant inspection plan.
Background
Nuclear power is one of clean and efficient dominant energy sources, and has been developed in a long term in the global scope with good environmental and economic benefits. In the face of the vigorous development of nuclear power, the inspection tasks and data of the in-service units are increasingly increased, the equipment defects of the in-service units are also increasingly increased, and the informatization management of a plurality of data is also a trend.
At present, most of domestic large nuclear power plants do not realize integrated and convenient informationized management, and a plurality of original data are still stored in a paper form, so that the original data are easy to damage and lose. Although some management software is developed in part of nuclear power plants, the maintenance is mostly lacking, the function is limited to basic maintenance of information, information sharing of multiple units cannot be realized, and large data management analysis cannot be performed by utilizing historical data, so that the function is lower. Accordingly, the inspection units often face problems such as: the inspection plan cannot timely track the latest plan of the nuclear power plant, so that the inspection technical scheme is not compiled timely; the programming of the inspection technical scheme can not effectively combine experience feedback, so that historical defects are retransmitted and frequently generated; the inspection unit cannot estimate the remaining life of the equipment in advance, the nuclear power plant owner cannot be notified in advance, or the notification is not as fast as the technical or resource preparation, which ultimately leads to insufficient equipment security, etc.
Therefore, it is of great importance to implement an in-service inspection data management method for a nuclear power plant.
Disclosure of Invention
The invention aims to provide a scientific data management and analysis method so as to optimally adjust a nuclear power plant inspection plan.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an in-service inspection data management and analysis method for a nuclear power plant for managing and analyzing inspection data obtained by in-service inspection of a pressure vessel in the nuclear power plant so as to optimally adjust a nuclear power plant inspection plan, the in-service inspection data management and analysis method for the nuclear power plant comprising the steps of:
step 1: acquiring a current latest nuclear power plant inspection plan;
step 2: an inspection technical scheme is compiled based on the obtained nuclear power plant inspection plan;
step 3: according to the technical scheme, a separate inspection report is compiled according to inspection data obtained by inspecting the pressure container in the nuclear power plant;
step 4: judging whether common mode defects exist in similar equipment in the nuclear power plant according to the item inspection report, if so, calling a history processing scheme aiming at the common mode defects for execution, and if not, generating a first type notification sheet according to a judgment conclusion;
step 5: judging whether the wall thickness of the pressure container has a trend of thinning along with the service life according to the item inspection report and the historical data, if so, calculating the annual average thinning rate of the wall thickness of the pressure container, further calculating the age required by thinning the wall thickness of the pressure container to an unqualified limit value, generating a second type notification bill according to the calculated annual average thinning rate and age, and if not, generating a third type notification bill according to a judging conclusion;
step 6: adjusting the nuclear power plant inspection plan according to various notification sheets to obtain a new nuclear power plant inspection plan;
step 7: returning to the step 1;
the nuclear power plant in-service inspection data management and analysis method is realized based on a local area network A loaded with in-service inspection data management software and a local area network B provided with a nuclear power plant inspection plan database, wherein the local area network A and the local area network B are in communication connection; the in-service inspection data management software is used for realizing the steps 1 to 5, the nuclear power plant inspection plan database is used for realizing the step 6, and in the step 1, the in-service inspection data management software obtains the current latest nuclear power plant inspection plan from the nuclear power plant inspection plan database.
Before the step 1, the method further comprises the step of storing parameters and drawings of the pressure vessel in the nuclear power plant.
In the step 3, the inspection of the pressure vessel in the nuclear power plant comprises macroscopic inspection, ultrasonic inspection, penetration inspection, magnetic powder inspection and wall thickness inspection.
And in the step 4, extracting various defect parameters from the itemized inspection report, generating a defect report, and judging whether common mode defects exist in the similar equipment in the nuclear power plant based on the defect report.
In the step 5, the minimum value of the wall thickness is extracted from the wall thickness detection report of the subitem inspection report and is compared with the historical data of the wall thickness, so that whether the wall thickness of the pressure container tends to be thinned along with the service life is judged.
In the step 6, the adjusting the nuclear power plant inspection plan includes:
shortening the detection period, adjusting the detection method and increasing the detection proportion when common mode defects do not exist in the similar equipment in the nuclear power plant;
shortening the wall thickness detection period when the wall thickness of the pressure vessel tends to be thinned with the service life;
the extended wall thickness detection period when there is no tendency for the wall thickness of the pressure vessel to decrease with age.
The in-service inspection data management software comprises a system control module, a technical information module, a planning scheme module, an inspection report module and a data analysis module, wherein the step 1 is realized by the system control module and the planning scheme module, the step 2 is realized by the planning scheme module, the step 3 is realized by the inspection report module, and the step 4 and the step 5 are realized by the data analysis module.
The in-service inspection data management software is used by an authorized user, and the authorized user logs in the in-service inspection data management software by using a personal account and a password.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the invention relies on in-service inspection data management software, can scientifically manage and analyze the inspection data of the pressure vessel of the nuclear power plant, thereby promoting the optimization and adjustment of the inspection plan of the nuclear power plant, and further ensuring the safe operation of the nuclear power plant timely and effectively.
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FIG. 1 is a schematic diagram of in-service inspection data management software according to the present invention.
Fig. 2 is a flow chart of the business of the present invention.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings.
Embodiment one: as shown in fig. 1 and 2, an in-service inspection data management and analysis method for a nuclear power plant is used for managing and analyzing inspection data obtained by in-service inspection of a pressure vessel in the nuclear power plant, thereby optimizing and adjusting a nuclear power plant inspection plan.
The nuclear power plant in-service inspection data management and analysis method is realized based on a local area network A carrying in-service inspection data management software and a local area network B with a nuclear power plant inspection plan database, wherein the local area network A and the local area network B are in communication connection. The in-service inspection data management software in the local area network A comprises a system control module, a technical information module, a planning scheme module, a test report module and a data analysis module.
In the preparation phase, the method comprises the following steps:
step 01: the developer uses HTML language to make page construction of 'in-service check data management software', and uses DIV/CSS to beautify; meanwhile, the Microsoft Visual Studio is adopted to complete the development of modules such as system control, technical information, planning schemes, inspection reports, data analysis and the like, and further based on a Net Framework library, the user's authority control, the data addition and modification, query screening, association quotation, data extraction, chart drawing, import and export, task notification and other functional operations are realized.
Step 02: after the primary development of the in-service inspection data management software is finished, a developer builds the local area network A, and functional docking with an independent self-checking plan database (namely the local area network B) of the nuclear power plant is realized. The software is subjected to online test running on the local area network A, a user performs evaluation from the dimensions of safety, stability, convenience, data accuracy and the like of the software running, a developer performs debugging according to feedback, and finally the formal online running of the software is realized.
And 03, performing authority allocation on each user by a system administrator according to service requirements, and checking data management software in service for authorized users.
Step 04: the authorized user logs in the in-service inspection data management software by using a personal account and a password, and performs basic data maintenance by using a technical information module, so that parameters and drawings of a pressure container in the nuclear power plant are acquired and stored. Namely, technical parameters of the pressure vessel and 2D drawing which are arranged in advance are recorded into a technical information module, wherein the technical parameters comprise: the method belongs to power plants, units, systems, functional positions, equipment names, equipment categories, room numbers, materials, sizes, wall thicknesses, temperatures, pressures, welding line information, safety accessory information and the like.
After the in-service inspection data management software and the nuclear power plant inspection plan database are prepared, the in-service inspection data management and analysis method of the nuclear power plant can be implemented, and specifically comprises the following steps:
step 1: the current latest nuclear power plant inspection plan is obtained.
The step is realized by in-service inspection data management software, a system control module and a planning scheme module of the software are utilized to realize real-time butt joint of an inspection plan on the local area network A and a nuclear power plant inspection plan database on the local area network B, whether the inspection plan names on the local area network A and the local area network B are consistent is judged, if the inspection plan names on the local area network B are found to be different from the inspection plan names on the local area network A, the file is transmitted from the local area network B to the local area network A, and the update of the nuclear power plant inspection plan on the local area network A is realized.
Step 2: and an inspection technical scheme is compiled based on the obtained nuclear power plant inspection plan.
This step is implemented by the planning scheme module of the in-service inspection data management software. The new synchronization to the inspection plan on the local area network A automatically generates a new task notification to inform the authorized user of the establishment of the inspection technical scheme based on the new task notification, and the authorized user performs online establishment and verification validation of the inspection technical scheme according to the new inspection plan.
After the inspection technical scheme is compiled, according to the newly compiled inspection technical scheme, on-site inspection personnel execute inspection and detection on equipment to be detected, and inspection and detection records are made. The inspection of the pressure vessel in the nuclear power plant comprises macroscopic inspection, ultrasonic inspection, penetration inspection, magnetic powder inspection, wall thickness inspection and the like.
Step 3: and compiling a separate inspection report according to inspection data obtained by inspecting equipment and pressure vessels in the nuclear power plant by executing the inspection technical scheme.
This step is implemented by a verification reporting module of the in-service inspection data management software. Because the inspection of the pressure container in the nuclear power plant comprises macroscopic inspection, ultrasonic inspection, penetration inspection, magnetic powder inspection, wall thickness inspection and the like, an authorized user is required to compile inspection and detection reports of macroscopic inspection, wall thickness inspection, ultrasonic inspection, magnetic powder inspection, penetration inspection and the like through an inspection report module of in-service inspection data management software in the step, so that a subitem inspection report is obtained. After the report is compiled, the software automatically stimulates the report on-line auditing flow, the authorized user embeds the electronic signature after the report is audited, and finally the report signature is completed to take effect.
Step 4: judging whether common mode defects exist in similar equipment in the nuclear power plant according to the itemized inspection report, if so, calling a history processing scheme aiming at the common mode defects for execution, and if not, generating a first type notification list according to a judging conclusion.
This step is implemented by a data analysis module of the in-service inspection data management software. Specifically, after the report is effective, the software judges whether defect parameters in the macroscopic, ultrasonic, magnetic powder, permeation and other sub-reports are blank, if not, each defect parameter is extracted from the sub-inspection report and a defect report is generated, and further whether common mode defects exist in the similar equipment in the same nuclear power plant is judged based on the defect report. If so, calling a corresponding historical treatment scheme to eliminate the defect of the pressure container; if not, a first type of notification ticket is generated for feedback to local area network B.
Step 5: judging whether the wall thickness of the pressure container has a trend of thinning along with the service life according to the item inspection report and the historical data, if so, calculating the annual average thinning rate of the wall thickness of the pressure container, further calculating the age required by thinning the wall thickness of the pressure container to the unqualified limit value, generating a second type notification bill according to the calculated annual average thinning rate and the age, and if not, generating a third type notification bill according to the judging conclusion.
This step is implemented by a data analysis module of the in-service inspection data management software. Specifically, wall thickness data is extracted from a wall thickness detection report of a itemized inspection report, minimum values are identified according to a natural value size rule, and corresponding values are extracted to form a minimum wall thickness report. And judging whether the wall thickness of the pressure container has a tendency of thinning along with the service life according to the historical minimum wall thickness report of the pressure container, namely comparing the report with the historical data of the wall thickness. If the trend of thinning exists, calculating the annual average thinning rate, measuring and calculating the required years when the wall thickness of the pressure container is thinned to be unqualified, and synchronously generating a second type notification list to be fed back to the local area network B so as to inform a user of the residual service life of the pressure container. If there is no trend of thinning, a third type of notification is generated for feedback to the local area network B.
The above steps 4 and 5 may be performed simultaneously or in exchange order.
Step 6: and adjusting the nuclear power plant inspection plan according to various notices to obtain a new nuclear power plant inspection plan.
In this step, the adjustment of the nuclear power plant inspection plan includes three kinds, respectively: 1. shortening the detection period, adjusting the detection method and increasing the detection proportion when common mode defects do not exist in the similar equipment in the nuclear power plant; 2. shortening the wall thickness detection period when the wall thickness of the pressure vessel tends to be thinned with the service life; 3. the extended wall thickness detection period when there is no tendency for the wall thickness of the pressure vessel to decrease with age.
While generating a new nuclear power plant inspection plan, authorized users can fully reserve technology and resources according to the notification so as to ensure that the pressure vessel can be replaced or treated equivalently smoothly in the remaining service life.
Step 7: returning to the step 1. And (3) the plan scheme module on the local area network A carries out judgment and identification on the inspection plan generated by the new preparation in the step (6) on the local area network B, and after the related file is transmitted from the local area network B to the local area network A, the related work in the steps (2) to (6) is continuously executed.
The invention relies on the in-service inspection data management software to respectively manage the technical information, the plan scheme and the inspection report of the pressure vessel of the nuclear power plant, extract the inspection result data from the inspection report, form a defect report and a minimum wall thickness report, analyze the defect report, promote and optimize the inspection plan of the nuclear power plant, form a set of scientific data management, data analysis and plan scheme optimization flow, and have positive significance for guaranteeing the safe operation of the pressure vessel of the nuclear power plant and promoting the development of the in-service inspection profession. By using the method, the technical information of the pressure vessel of the nuclear power plant can be stored in a data mode, and the technical information of the pressure vessel is maintained and inquired on line; synchronous maintenance with a nuclear power plant inspection plan can be performed, and online maintenance and inquiry of an inspection technical scheme can be performed; the method can carry out online compiling and auditing of the inspection report, and synchronously generate a defect report and a minimum wall thickness report; on the basis of realizing the data maintenance, the defect common mode and wall thickness reduction trend analysis is carried out, the nuclear power plant owners are informed of carrying out scientific optimization on the inspection plan, and finally powerful support is provided for the large data management and safety guarantee of the pressure vessel of the nuclear power plant.
The beneficial effects are as follows: (1) The invention can realize the data management and storage of the technical information, the planning scheme and the inspection report of the pressure vessel of the nuclear power plant, and is convenient for information inquiry and sharing; (2) The invention can realize the online compiling and auditing of the inspection report, reduce the cost consumption of inspection unit travel and improve the efficiency; (3) The invention can track and update the latest inspection plan of the nuclear power plant in real time, thereby avoiding the technical problem that the inspection plan and the inspection technical scheme are not compiled in time; (4) The invention can effectively analyze the historical inspection data and defects, provides scientific basis for the optimization of inspection plans and inspection technical schemes, and effectively solves the technical problem of preventing the retransmission of the historical defects; (5) The invention can combine the residual life of the pressure vessel, and can prospectively inform the nuclear power plant owner of technical or resource reservation, thereby providing powerful technical guarantee for guaranteeing the safety of equipment.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (8)
1. An in-service inspection data management and analysis method for a nuclear power plant, for managing and analyzing inspection data obtained by in-service inspection of a pressure vessel in the nuclear power plant, so as to optimally adjust a nuclear power plant inspection plan, characterized in that: the nuclear power plant in-service inspection data management and analysis method comprises the following steps:
step 1: acquiring a current latest nuclear power plant inspection plan;
step 2: an inspection technical scheme is compiled based on the obtained nuclear power plant inspection plan;
step 3: according to the technical scheme, a separate inspection report is compiled according to inspection data obtained by inspecting the pressure container in the nuclear power plant;
step 4: judging whether common mode defects exist in similar equipment in the nuclear power plant according to the item inspection report, if so, calling a history processing scheme aiming at the common mode defects for execution, and if not, generating a first type notification sheet according to a judgment conclusion;
step 5: judging whether the wall thickness of the pressure container has a trend of thinning along with the service life according to the item inspection report and the historical data, if so, calculating the annual average thinning rate of the wall thickness of the pressure container, further calculating the age required by thinning the wall thickness of the pressure container to an unqualified limit value, generating a second type notification bill according to the calculated annual average thinning rate and age, and if not, generating a third type notification bill according to a judging conclusion;
step 6: adjusting the nuclear power plant inspection plan according to various notification sheets to obtain a new nuclear power plant inspection plan;
step 7: returning to the step 1;
the nuclear power plant in-service inspection data management and analysis method is realized based on a local area network A loaded with in-service inspection data management software and a local area network B provided with a nuclear power plant inspection plan database, wherein the local area network A and the local area network B are in communication connection; the in-service inspection data management software is used for realizing the steps 1 to 5, the nuclear power plant inspection plan database is used for realizing the step 6, and in the step 1, the in-service inspection data management software obtains the current latest nuclear power plant inspection plan from the nuclear power plant inspection plan database.
2. The method for managing and analyzing in-service inspection data of a nuclear power plant according to claim 1, wherein the method comprises the steps of: before the step 1, the method further comprises the step of storing parameters and drawings of the pressure vessel in the nuclear power plant.
3. The method for managing and analyzing in-service inspection data of a nuclear power plant according to claim 1, wherein the method comprises the steps of: in the step 3, the inspection of the pressure vessel in the nuclear power plant comprises macroscopic inspection, ultrasonic inspection, penetration inspection, magnetic powder inspection and wall thickness inspection.
4. The method for managing and analyzing in-service inspection data of a nuclear power plant according to claim 1, wherein the method comprises the steps of: and in the step 4, extracting various defect parameters from the itemized inspection report, generating a defect report, and judging whether common mode defects exist in the similar equipment in the nuclear power plant based on the defect report.
5. The method for managing and analyzing in-service inspection data of a nuclear power plant according to claim 1, wherein the method comprises the steps of: in the step 5, the minimum value of the wall thickness is extracted from the wall thickness detection report of the subitem inspection report and is compared with the historical data of the wall thickness, so that whether the wall thickness of the pressure container tends to be thinned along with the service life is judged.
6. The method for managing and analyzing in-service inspection data of a nuclear power plant according to claim 1, wherein the method comprises the steps of: in the step 6, the adjusting the nuclear power plant inspection plan includes:
shortening the detection period, adjusting the detection method and increasing the detection proportion when common mode defects do not exist in the similar equipment in the nuclear power plant;
shortening the wall thickness detection period when the wall thickness of the pressure vessel tends to be thinned with the service life;
the extended wall thickness detection period when there is no tendency for the wall thickness of the pressure vessel to decrease with age.
7. The method for managing and analyzing in-service inspection data of a nuclear power plant according to claim 1, wherein the method comprises the steps of: the in-service inspection data management software comprises a system control module, a technical information module, a planning scheme module, an inspection report module and a data analysis module, wherein the step 1 is realized by the system control module and the planning scheme module, the step 2 is realized by the planning scheme module, the step 3 is realized by the inspection report module, and the step 4 and the step 5 are realized by the data analysis module.
8. The method for managing and analyzing in-service inspection data of a nuclear power plant according to claim 1, wherein the method comprises the steps of: the in-service inspection data management software is used by an authorized user, and the authorized user logs in the in-service inspection data management software by using a personal account and a password.
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| CN1414366A (en) * | 2001-10-24 | 2003-04-30 | 中国石油化工股份有限公司巴陵分公司 | Method of detecting pressure container |
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| DE102018128364A1 (en) * | 2018-11-13 | 2020-05-14 | Bayerische Motoren Werke Aktiengesellschaft | System and method for identifying a pressure vessel and pressure vessel |
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