GB/T 46375-2025 Operational nuclear power plant core metadata English, Anglais, Englisch, Inglés, えいご
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ICS 13.220.10
CCS H 57
National Standard of the People's Republic of China
GB 46375-2025
Operational nuclear power plant core metadata
运行核电厂核心元数据
Issue date: 2025-10-31 Implementation date: 2026-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Core Metadata Definition Process for Operating Nuclear Power Plants
5 Metadata Rules
6 Metadata Identification and Extension
7 Metadata Model
8 Metadata Dictionary Attributes and Description Methods
9 Core Metadata Dictionary for Operating Nuclear Power Plants
Appendix A (Normative) Core Metadata Dictionary for Operating Nuclear Power Plants
References
1 Scope
This document specifies the encoding rules, models, attributes, and description methods for core metadata in nuclear power plants during operation. It applies to data management, utilization, and exchange in core production activities of nuclear power plants, establishing a data foundation for their digital transformation.
2 Normative Referenced Documents
The contents of the following documents are incorporated into this document as essential clauses through normative references. Versions of referenced documents with dates are applicable only to the version indicated; those without dates are applicable to their latest versions (including all amendments).
GB/T 43697-2024 Data Security Technology Data Classification and Grading Rules
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Metadata
Data that defines and describes other data.
[Source: GB/T 45434.2—2025, 3.1.1] 3.2 Core Metadata
3.2
The minimum set of metadata describing the basic information of data.
[Source: GB/T 30523—2023, 3.3] 3.3 Metadata Model
3.3
An analysis of images and text that identifies data required by an organization to fulfill its mission, functions, goals, purposes, and strategies, as well as for management and evaluation.
[Source: GB/T 36344—2018, 2.7] 3.4 Specific Plant Vulnerability Equipment (SPV)
3.4
Specific equipment that has a significant impact on the safety and reliability of nuclear power plant operations.
3.5 Radiological Work Permit (RWP)
A permit issued by the responsible department for activities in radiation-controlled areas that may cause ionizing radiation exposure, specifying radiation safety requirements, protective measures, and approval procedures.
3.6 Clarification Request (CR)
An application to the design party during nuclear engineering system debugging implementation for system or equipment improvements, modifications, or clarifications.
3.7 Material Requirements Planning (MRP)
A material planning management mode in nuclear enterprises to ensure timely supply of materials for equipment maintenance, major overhauls, and modifications, based on product structure relationships and time benchmarks.
3.8 Counts Per Minute (CPM)
The number of radioactive decays occurring in a sample within 1 minute in radiation measurements.
Note: A measure of radiation levels, which can be measured using Geiger-Müller counters, scintillation counters, and proportional counters.
3.9 Root Cause Analysis (RCA)
A structured method to trace the underlying causes of anomalies in nuclear power plants.
3.10 Radiological Risk Assessment Procedure (RRAP)
A systematic evaluation process for radiation risks in nuclear facilities or radioactive substance-related activities.
Note: Predicts and assesses the potential harm to personnel health, the environment, and society from radiation sources, exposure pathways, and other factors, and develops protective measures and risk management strategies.
3.11 Reactor Power (RP)
The state of a nuclear power plant reactor operating at a stable power level.
3.12 Whole Body Counter (WBC)
A device that directly measures X-rays or gamma rays emitted by radioactive isotopes in the human body from the outside to perform qualitative and quantitative analysis.
4 Core Metadata Definition Process for Operating Nuclear Power Plants
4.1 Core Theme Domain Scope Definition Process
The core metadata theme domain is based on key business theme domains in the production operation process of nuclear power plants, divided into nine domains: operation, maintenance, technology, safety and quality, environmental response, supply chain, finance, human resources, and others. Among these, operation, maintenance, technology, safety and quality, and supply chain are primary theme domains. Secondary and tertiary entity categories and their relationships are determined through in-depth analysis based on primary theme domains. These information collectively constitute the core support system for nuclear safety, efficiency, and compliance operations, directly impacting nuclear power plant operation management and decision-making. Through standardized metadata definitions for theme domains, data consistency, accuracy, and usability are improved, ensuring the safe and efficient operation of nuclear power plants.
4.2 Core Metadata Definition Process
4.2.1 Data Resource Inventory and Screening
4.2.1.1 Confirm Core Metadata for Defined Theme Domains: To scientifically define core metadata for operating nuclear power plants, ensuring it meets the information technology construction needs and data security management requirements of the nuclear power industry, this document mainly defines core metadata for theme domains based on data importance, usage scenarios, and business impact through data resource inventory and screening, usage scenario analysis and business impact identification, and data value assessment and core position confirmation.
4.2.1.2 Comprehensive Inventory of Data Resources: Systematically organize databases, documents, interfaces, and external data sources covering key business theme domains in the production operation process of nuclear power plants, clearly defining data sources, storage locations, and responsible departments, and establishing a data resource catalog.
4.2.1.3 Quantitative Assessment of Data Characteristics: Through data analysis tools, statistically analyze data usage frequency (such as daily access volume, cross-system call frequency, etc.), storage periods, and data update frequencies, and combine business department feedback on business relevance to assess the importance level of data.
4.2.1.4 Screening of Candidate Metadata: Based on the assessment results, screen out data items with high usage frequency, strong business relevance, and long storage periods to form a core metadata candidate directory list.
4.2.2 Usage Scenarios and Business Impact Degree
