Material management system and method

Abstract

The invention discloses a material management system and method, the material management system comprises a standard data support layer, a demand analysis decision layer, a material matching coordination layer and a system integration execution layer, the standard data support layer is used for collecting historical nuclear power unit data and constructing nuclear power project standard data; the demand analysis decision-making layer is used for constructing purchase data and ex-warehouse data in the nuclear power project; the material matching coordination layer is used for acquiring the data of the standard data support layer and the data of the demand analysis decision-making layer to generate a material matching list and a gap matching list; and the system integration execution layer is used for generating a purchasing instruction according to the material matching list and the gap matching list.

Description

Technical Field

[0001] This invention relates to the field of DCS engineering design technology for nuclear power plants, specifically to a materials management system and method. Background Technology

[0002] In nuclear power plant DCS (Digital Control System) engineering design projects, material requirements management is integrated into multiple stages of the project lifecycle. To ensure the continuity and accuracy of cabinet assembly and system deployment, designers need to promptly submit a material requirements list in the early stages of the project, clearly defining the procurement scope and expected delivery time of various items. This allows procurement personnel to execute the material procurement plan, and assembly personnel to perform cabinet integration and on-site assembly after the materials arrive.

[0003] In the early stages of the project, since complete sets of rack drawings and finalized design documents had not yet been developed, designers could only estimate material requirements based on reference stack types or historical unit data, including standard configuration items and common interface modules, to support early procurement and material reserves. This method relied on experience-based judgment, had limited accuracy, and could not dynamically update requirements.

[0004] As the design phase progresses, complete sets of cabinet drawings are gradually released, and the Bill of Materials (BOM) becomes clearer. At this point, based on the released design drawings, submitted material lists, SAP procurement records, and other information, a comprehensive comparison and analysis of the current material configuration can be conducted to dynamically calculate procurement needs at a specific point in time. However, in current engineering practice, the above process largely relies on manual operation, primarily managing design and procurement data through Excel spreadsheets. This presents the following problems: a lack of a unified data platform, leading to a disconnect between design and procurement data; difficulty in supporting cross-phase material comparison and updates, making it difficult to identify matching gaps in a timely manner; risks such as chaotic version management and data lag during project progress; and the reliance on manual calculation and data entry, which increases the risk of human error and affects the accuracy of material configuration.

[0005] Patent document CN119849427A discloses an automatic generation method and system for electrical schematic design drawings of nuclear safety grade DCS cabinets. This includes modeling the electrical schematic design process of nuclear safety grade DCS cabinets; associating the model with input information; creating page macros for each type of drawing according to the classification of nuclear safety grade and DCS cabinet electrical schematic design process modeling; analyzing the specific inputs of the nuclear safety grade DCS project to be designed according to the model of the nuclear safety grade DCS cabinet electrical schematic design process, retrieving the corresponding required page macros for batch drawing, and completing the automated generation of electrical schematic design drawings for nuclear safety grade DCS cabinets. However, this method fails to address issues such as the lack of a unified management platform for design and procurement data, difficulties in cross-stage material comparison, chaotic version control, and the susceptibility to errors in manual processing. Consequently, it struggles to support the high-precision, closed-loop material demand management requirements in nuclear power DCS engineering.

[0006] Patent document CN109213108B discloses a nuclear power plant operator operation support system and method. The support system includes at least one row of gateway servers, application computing servers connected to each gateway server, and at least one row of operator workstations. The gateway servers are used to read data from the DCS real-time data network according to the execution cycle. The application computing servers are used to perform calculations on the data and send the calculation results to the DCS real-time data network through the gateway servers. The operator workstations are used to read the calculation results from the DCS real-time data network and display them to assist operators in operating the nuclear power plant. However, this system does not solve problems such as the lack of a unified management platform for design data and procurement data, difficulties in comparing materials across stages, chaotic version control, and the susceptibility to errors in manual processing. As a result, it is difficult to support the high-precision, closed-loop material demand management requirements in nuclear power DCS engineering.

[0007] In summary, neither of the two existing patents mentioned above has solved the problems of lack of a unified management platform for design and procurement data, difficulty in comparing materials across stages, chaotic version control, and error-prone manual processing. They are therefore unable to support the high-precision, closed-loop material demand management requirements in nuclear power DCS projects. Summary of the Invention

[0008] Based on the above-mentioned technical problems, this invention proposes a material management system and method to solve the problem that current methods do not comprehensively consider the power loss cost of the unit during actual operation, the operating cost of the cleaning system, and depreciation costs.

[0009] To achieve the above objectives, the present invention proposes a materials management system.

[0010] A materials management system includes a standard data support layer, a demand analysis and decision-making layer, a materials matching and coordination layer, and a system integration and execution layer.

[0011] The standard data support layer is used to collect historical nuclear power unit data and construct standard data for nuclear power projects;

[0012] The demand analysis and decision-making layer is used to construct procurement data and outbound data for nuclear power projects;

[0013] The material matching coordination layer is used to obtain data from the standard data support layer and the demand analysis and decision-making layer to generate a material matching list and a gap matching list.

[0014] The system integration execution layer is used to generate procurement instructions based on the material matching list and the gap matching list.

[0015] Furthermore, the standard data support layer includes a hardware standardization module and a design data management module. The hardware standardization module is used to extract cabinet structure and supporting material information from the historical nuclear power unit data and establish a cabinet material configuration model. The design data management module is used to collect the bill of materials information in the current nuclear power project design and convert it into a standardized format for management.

[0016] Furthermore, the hardware standardization module includes a data structure building unit, a cabinet information building unit, and a material information building unit. The data structure building unit is used to collect cabinet configuration data of historical units of the same stack type to build a standardized cabinet data structure. The cabinet information building unit is used to build standardized cabinet data information with material codes as the primary key based on the cabinet layout diagram. The material information building unit is used to build standard material information based on material data from an external enterprise resource planning system.

[0017] Furthermore, the design data management module includes a design data acquisition unit, a data structure conversion unit, and a data version management unit. The design data acquisition unit is used to extract the bill of materials data of the current nuclear power project from the engineering design platform or design documents. The data structure conversion unit is used to convert the bill of materials data into a standardized format and construct design data. The data version management unit is used to record the baseline version corresponding to the design data and to compare and backtrack different baseline versions.

[0018] Furthermore, the demand analysis and decision-making layer includes a procurement management module and an outbound management module. The procurement management module is used to generate procurement quantity data based on design data; the outbound management module is used to acquire and statistically analyze outbound data from the external enterprise resource planning system and generate outbound information.

[0019] Furthermore, the procurement management module includes a project data establishment unit, a standard comparison unit, and a procurement quantity calculation unit. The project data establishment unit is used to establish a corresponding project material procurement database based on the design data generated for different nuclear power projects. The standard comparison unit is used to match the project material procurement database with the standard material information, identify the differences in items and their corresponding quantity differences to obtain comparison results. The procurement quantity calculation unit is used to calculate procurement quantity data based on the comparison results.

[0020] Furthermore, the procurement management module also includes a procurement data maintenance unit, which is used to establish and maintain the version information of the procurement quantity data and record the generation time, project number and corresponding version information of the procurement quantity data.

[0021] Furthermore, the outbound management module includes an outbound data receiving unit, a usage status tracking unit, and an account reconciliation and verification unit. The outbound data receiving unit is used to receive outbound data from the external enterprise resource planning system; the usage status tracking unit is used to record the actual usage data of materials during project execution; and the account reconciliation and verification unit is used to verify the outbound records with the project material procurement database to generate the outbound information.

[0022] Furthermore, the material coordination layer includes a data integration module, a gap calculation module, and a material matching list generation module. The data integration module is used to summarize the procurement volume data, the project material procurement database, and the outbound information to construct the material configuration status information of the nuclear power project at the current time node. The gap calculation module is used to calculate the current data gap of the nuclear power project based on the material configuration status information. The material matching list generation module is used to generate the material matching list based on the material configuration status information, and generate the gap matching list based on the material matching list and the data gap.

[0023] Furthermore, the system integration execution layer includes a data synchronization unit and a procurement instruction generation unit. The data synchronization unit is used to synchronize the material matching list and the gap matching list to the external enterprise resource planning system in the form of a structured interface. The procurement instruction generation unit is used to generate the procurement instruction in the external enterprise resource planning system based on the material matching list and the gap matching list.

[0024] Furthermore, the system integration execution layer also includes a status feedback unit, which is used to receive feedback information from the external enterprise resource planning system regarding the execution status of the procurement instruction.

[0025] To achieve the above objectives, the present invention also proposes a material management method.

[0026] A material management method, characterized by comprising:

[0027] Based on the standard data support layer, historical nuclear power unit data is collected to construct a data structure and standard data for nuclear power projects;

[0028] By constructing procurement data and outbound data in the aforementioned demand analysis and decision-making layer;

[0029] The standard data of the nuclear power project, the procurement data, and the outbound data are input into the material matching coordination layer to generate the material matching list and the gap matching list;

[0030] The material matching list and the missing matching list are input into the system integration execution layer to generate a procurement instruction.

[0031] Furthermore, the standard data for the nuclear power project, the procurement data, and the outbound data are input into the material coordination layer to generate the material matching list and the gap matching list, including:

[0032] Based on the version information, design data, and procurement quantity data, the quantity of each material in the material matching list is calculated using the following expression:

[0033]

[0034] Where f(x) is the total quantity of material x in the material matching summary table, k is the version number, and x n For the nth data point of material x, f k (x) represents the quantity of material x in the purchase volume data.

[0035] Based on the above technical solution, the present invention has at least the following beneficial effects:

[0036] 1. This invention proposes a materials management system and method. By setting up a standard data support layer, a demand analysis and decision-making layer, a materials matching and coordination layer, and a system integration and execution layer, it achieves centralized management and integration of standard data, procurement data, and outbound data in nuclear power projects. The standard data support layer is responsible for collecting historical nuclear power unit data and constructing standard data for nuclear power projects based on this data, providing basic data support for the operation of the entire system. The demand analysis and decision-making layer then constructs procurement data and outbound data based on this, further refining and clarifying material requirements. The materials matching and coordination layer further integrates the above data to generate materials matching lists and gap matching lists, providing a basis for accurate allocation of materials. Finally, the system integration and execution layer generates procurement instructions based on these lists, ensuring the timeliness and accuracy of material supply. This hierarchical management model makes the management of material data for each project more systematic and standardized, effectively avoiding the problems of human error, omissions, and inefficiency that are prone to occur when manually creating tables, thereby achieving efficient overall management of project materials.

[0037] 2. This invention proposes a materials management system and method. By introducing a materials standard library for each type of nuclear power plant, the standard data support layer can collect historical nuclear power unit data and construct standard data for nuclear power projects. Based on this, the demand analysis and decision-making layer can construct procurement data and outbound data. Through this data integration and analysis, the system can quickly generate an initial version of the materials demand list, providing strong support for the early material preparation of the project, greatly improving the efficiency of generating the materials demand list, and saving time and manpower costs.

[0038] 3. This invention proposes a materials management system and method. The system incorporates early-stage design data of nuclear power plants into its management scope. The design data management module can collect the bill of materials information in the current nuclear power project design and convert it into a standardized format for management. The materials matching coordination layer can acquire this data and generate materials matching lists and gap matching lists. This allows the system to track changes in materials in real time and promptly capture changes in material requirements caused by design changes, thereby ensuring the timeliness and accuracy of material requirements and avoiding project progress impacts due to missed material requests. By calculating the deviation between the submitted material requirement data and the design data, the system can automatically obtain the data of the current version of the materials requirement list. This invention can also accurately calculate the quantity of each material in the materials matching list based on version information, design data, and procurement quantity data. This automated calculation method reduces human error, improves data accuracy, and saves time for manual calculation and verification, further improving work efficiency and ensuring the timeliness and reliability of material supply. Attached Figure Description

[0039] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0040] Figure 1 A schematic diagram of a materials management system according to one embodiment is shown. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] The present invention will be further described in detail below with reference to specific embodiments, which should not be construed as limiting the scope of protection claimed by the present invention.

[0043] Example

[0044] To address the challenges of a lack of a unified management platform for design and procurement data, difficulties in cross-stage material comparison, chaotic version control, and errors caused by manual processing, which hinder the high-precision, closed-loop material demand management requirements of nuclear power DCS projects, this invention proposes a material management system and method.

[0045] To achieve the above objectives, the present invention proposes a materials management system.

[0046] like Figure 1 The diagram illustrates a materials management system according to an embodiment of the present invention, comprising a standard data support layer, a demand analysis and decision-making layer, a materials matching and coordination layer, and a system integration and execution layer.

[0047] The standard data support layer is used to collect historical nuclear power unit data and construct standard data for nuclear power projects;

[0048] The demand analysis and decision-making layer is used to construct procurement data and outbound data for nuclear power projects;

[0049] The material matching coordination layer is used to obtain data from the standard data support layer and the demand analysis and decision-making layer to generate a material matching list and a gap matching list.

[0050] The system integration execution layer is used to generate procurement instructions based on the material matching list and the gap matching list.

[0051] Furthermore, the external enterprise resource planning system mentioned in this invention is an enterprise resource planning system (ERP) widely used in large-scale engineering projects, including the nuclear power construction field. It is primarily responsible for the integrated management of a company's core business processes, such as finance, procurement, inventory, project control, and human resources.

[0052] Furthermore, such as Figure 1 The standard data support layer shown includes a hardware standardization module and a design data management module. The hardware standardization module is used to extract cabinet structure and supporting material information from historical nuclear power unit data and establish a cabinet material configuration model. The design data management module is used to collect the bill of materials information in the current nuclear power project design and convert it into a standardized format for management.

[0053] Furthermore, the standard data support layer includes a hardware standardization module and a design data management module. The hardware standardization module is used to extract cabinet structure and supporting material information from historical nuclear power unit data and establish a cabinet material configuration model. The design data management module is used to collect the bill of materials information in the current nuclear power project design and convert it into a standardized format for management.

[0054] Furthermore, the hardware standardization module includes a data structure building unit, a rack information building unit, and a material information building unit. The data structure building unit is used to collect rack configuration data of historical units of the same stack type to build a standardized rack data structure; the rack information building unit is used to build standardized rack data information with material codes as the primary key based on the rack layout diagram; and the material information building unit is used to build standard material information based on material data from an external enterprise resource planning system.

[0055] Furthermore, the design data management module includes a design data acquisition unit, a data structure conversion unit, and a data version management unit. The design data acquisition unit is used to extract the bill of materials data of the current nuclear power project from the engineering design platform or design documents; the data structure conversion unit is used to convert the bill of materials data into a standardized format and construct design data; and the data version management unit is used to record the baseline version corresponding to the design data and to compare and backtrack different baseline versions.

[0056] Furthermore, the demand analysis and decision-making layer includes a procurement management module and an outbound management module. The procurement management module is used to generate procurement quantity data based on design data; the outbound management module is used to acquire and statistically analyze outbound data from external enterprise resource planning systems and generate outbound information.

[0057] Furthermore, the procurement management module includes a project data establishment unit, a standard comparison unit, and a procurement quantity calculation unit. The project data establishment unit is used to establish a corresponding project material procurement database based on the design data generated by different nuclear power projects. The standard comparison unit is used to match the project material procurement database with standard material information, identify the differences in items and their corresponding quantity differences, and obtain comparison results. The procurement quantity calculation unit is used to calculate procurement quantity data based on the comparison results.

[0058] Furthermore, the procurement management module also includes a procurement data maintenance unit and a procurement data maintenance form, which are used to establish and maintain version information of procurement quantity data, and record the generation time, project number and corresponding version information of procurement quantity data.

[0059] Furthermore, the outbound management module includes an outbound data receiving unit, a usage status tracking unit, and a reconciliation and verification unit. The outbound data receiving unit is used to receive outbound data from an external enterprise resource planning system; the usage status tracking unit is used to record the actual usage data of materials during project execution; and the reconciliation and verification unit is used to verify the outbound records with the project material procurement database to generate outbound information.

[0060] Furthermore, the material support coordination layer includes a data integration module, a gap calculation module, and a support list generation module. The data integration module is used to summarize procurement volume data, project material procurement database, and outbound information to construct the material configuration status information of the nuclear power project at the current time node. The gap calculation module is used to calculate the data gap of the current nuclear power project based on the material configuration status information. The support list generation module is used to generate a material support list based on the material configuration status information, and generate a gap support list based on the material support list and the data gap.

[0061] Furthermore, the system integration execution layer includes a data synchronization unit and a procurement instruction generation unit. The data synchronization unit is used to synchronize the material matching list and the gap matching list to the external enterprise resource planning system in the form of a structured interface. The procurement instruction generation unit is used to generate procurement instructions in the external enterprise resource planning system based on the material matching list and the gap matching list.

[0062] Furthermore, the system integration execution layer also includes a status feedback unit, which is used to receive feedback information from the external enterprise resource planning system on the execution status of procurement instructions.

[0063] To achieve the above objectives, the present invention also proposes a material management method using the aforementioned material management system.

[0064] A materials management method, comprising:

[0065] Based on the standard data support layer, historical nuclear power unit data is collected to construct a data structure and standard data for nuclear power projects;

[0066] By constructing procurement data and outbound data in the aforementioned demand analysis layer;

[0067] The standard data of the nuclear power project, the procurement data, and the outbound data are input into the material matching coordination layer to generate the material matching list and the gap matching list;

[0068] The material matching list and the missing matching list are input into the system integration execution layer to generate a procurement instruction.

[0069] Furthermore, the standard data for the nuclear power project, the procurement data, and the outbound data are input into the material coordination layer to generate the material matching list and the gap matching list, including:

[0070] Based on the version information, design data, and procurement quantity data, the quantity of each material in the material matching list is calculated using the following expression:

[0071]

[0072] Where f(x) is the total quantity of material x in the material matching summary table, k is the version number, and x n For the nth data point of material x, f k (x) represents the quantity of material x in the purchase volume data.

[0073] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0074] In summary, as can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0075] 1. This invention proposes a materials management system and method. By setting up a standard data support layer, a demand analysis and decision-making layer, a materials matching and coordination layer, and a system integration and execution layer, it achieves centralized management and integration of standard data, procurement data, and outbound data in nuclear power projects. The standard data support layer is responsible for collecting historical nuclear power unit data and constructing standard data for nuclear power projects based on this data, providing basic data support for the operation of the entire system. The demand analysis and decision-making layer then constructs procurement data and outbound data based on this, further refining and clarifying material requirements. The materials matching and coordination layer further integrates the above data to generate materials matching lists and gap matching lists, providing a basis for accurate allocation of materials. Finally, the system integration and execution layer generates procurement instructions based on these lists, ensuring the timeliness and accuracy of material supply. This hierarchical management model makes the management of material data for each project more systematic and standardized, effectively avoiding the problems of human error, omissions, and inefficiency that are prone to occur when manually creating tables, thereby achieving efficient overall management of project materials.

[0076] 2. This invention proposes a materials management system and method. By introducing a materials standard library for each type of nuclear power plant, the standard data support layer can collect historical nuclear power unit data and construct standard data for nuclear power projects. Based on this, the demand analysis and decision-making layer can construct procurement data and outbound data. Through this data integration and analysis, the system can quickly generate an initial version of the materials demand list, providing strong support for the early material preparation of the project, greatly improving the efficiency of generating the materials demand list, and saving time and manpower costs.

[0077] 3. This invention proposes a materials management system and method. The system incorporates early-stage design data of nuclear power plants into its management scope. The design data management module can collect the bill of materials information in the current nuclear power project design and convert it into a standardized format for management. The materials matching coordination layer can acquire this data and generate materials matching lists and gap matching lists. This allows the system to track changes in materials in real time and promptly capture changes in material requirements caused by design changes, thereby ensuring the timeliness and accuracy of material requirements and avoiding project progress impacts due to missed material requests. By calculating the deviation between the submitted material requirement data and the design data, the system can automatically obtain the data of the current version of the materials requirement list. This invention can also accurately calculate the quantity of each material in the materials matching list based on version information, design data, and procurement quantity data. This automated calculation method reduces human error, improves data accuracy, and saves time for manual calculation and verification, further improving work efficiency and ensuring the timeliness and reliability of material supply.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0079] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0080] It should be noted that, in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A materials management system, characterized in that, It includes a standard data support layer, a demand analysis and decision-making layer, a material matching and coordination layer, and a system integration and execution layer. The standard data support layer is used to collect historical nuclear power unit data and construct standard data for nuclear power projects; The demand analysis and decision-making layer is used to construct procurement data and outbound data for nuclear power projects; The material matching coordination layer is used to obtain data from the standard data support layer and the demand analysis and decision-making layer to generate a material matching list and a gap matching list. The system integration execution layer is used to generate procurement instructions based on the material matching list and the gap matching list.

2. The system according to claim 1, characterized in that, The standard data support layer includes a hardware standardization module and a design data management module. The hardware standardization module is used to extract cabinet structure and supporting material information from the historical nuclear power unit data and establish a cabinet material configuration model. The design data management module is used to collect the bill of materials information in the current nuclear power project design and convert it into a standardized format for management.

3. The system according to claim 2, characterized in that, The hardware standardization module includes a data structure building unit, a rack information construction unit, and a material information construction unit. The data structure building unit is used to collect cabinet configuration data of historical units of the same stack type to build a standardized cabinet data structure. The cabinet information construction unit is used to construct standardized cabinet data information with material codes as the primary key based on the cabinet layout diagram. The material information building unit is used to build standard material information based on material data from an external enterprise resource planning system.

4. The system according to claim 3, characterized in that, The design data management module includes a design data acquisition unit, a data structure conversion unit, and a data version management unit. The design data acquisition unit is used to extract the bill of materials data of the current nuclear power project from the engineering design platform or design documents. The data structure conversion unit is used to convert bill of materials data into a standardized format and construct design data; The data version management unit is used to record the baseline version corresponding to the design data and to compare and backtrack different baseline versions.

5. The system according to claim 3, characterized in that, The demand analysis and decision-making layer includes a procurement management module and an outbound management module. The procurement management module is used to generate procurement quantity data based on the design data; The outbound management module is used to acquire and analyze outbound data from the external enterprise resource planning system and generate outbound information.

6. The system according to claim 5, characterized in that, The procurement management module includes a project data creation unit, a standard comparison unit, and a procurement quantity calculation unit. The project data establishment unit is used to establish a corresponding project material procurement database based on the design data generated by different nuclear power projects. The standard comparison unit is used to match the project material procurement database with the standard material information, identify the differences in items and their corresponding quantity differences to obtain comparison results. The procurement quantity calculation unit uses the comparison results to statistically analyze the procurement quantity data.

7. The system according to claim 6, characterized in that, The procurement management module also includes a procurement data maintenance unit. The procurement data maintenance unit is used to establish and maintain the version information of the procurement quantity data, and record the generation time, project number and corresponding version information of the procurement quantity data.

8. The system according to claim 7, characterized in that, The outbound management module includes an outbound data receiving unit, a usage status tracking unit, and an account reconciliation and verification unit. The outbound data receiving unit is used to receive outbound data from the external enterprise resource planning system; The usage status tracking unit is used to record the actual usage data of materials during project execution; The reconciliation and verification unit is used to verify the outbound records with the project material procurement database to generate the outbound information.

9. The system according to claim 8, characterized in that, The material coordination layer includes a data integration module, a gap calculation module, and a supporting list generation module. The data integration module is used to summarize the procurement volume data, the project material procurement database and the outbound information to construct the material configuration status information of the nuclear power project at the current time node; The gap calculation module is used to calculate the current data gap of the nuclear power project based on the material configuration status information; The matching list generation module is used to generate the matching list of materials based on the material configuration status information, and to generate the gap matching list based on the matching list of materials and the data gap.

10. The system according to claim 9, characterized in that, The system integration execution layer includes a data synchronization unit and a procurement instruction generation unit. The data synchronization unit is used to synchronize the material matching list and the gap matching list to the external enterprise resource planning system in the form of a structured interface; The procurement instruction generation unit is used to generate the procurement instruction in the external enterprise resource planning system based on the material matching list and the gap matching list.

11. The system according to claim 10, characterized in that, The system integration execution layer also includes a status feedback unit. The status feedback unit is used to receive feedback information from the external enterprise resource planning system regarding the execution status of the procurement instruction.

12. A management method based on the material management system according to any one of claims 1-11, characterized in that, include: Based on the standard data support layer, historical nuclear power unit data is collected to construct a data structure and standard data for nuclear power projects; By constructing procurement data and outbound data in the aforementioned demand analysis and decision-making layer; The standard data of the nuclear power project, the procurement data, and the outbound data are input into the material matching coordination layer to generate the material matching list and the gap matching list; The material matching list and the missing matching list are input into the system integration execution layer to generate a procurement instruction.

13. The method according to claim 12, characterized in that, The standard data for the nuclear power project, the procurement data, and the outbound data are input into the material matching coordination layer to generate the material matching list and the gap matching list, including: Based on the version information, design data, and procurement quantity data, the quantity of each material in the material matching list is calculated using the following expression: Where f(x) is the total quantity of material x in the material matching summary table, k is the version number, and x n For the nth data point of material x, f k (x) represents the quantity of material x in the purchase volume data.

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