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Multiple Units at Tianwan Nuclear Power Plant Go Live with Self-Developed EPM System

On August 31, the EPM system, a production management platform independently developed by China National Nuclear Power (CNNP), was officially launched at Units 3, 4, 7, and 8 of Tianwan Nuclear Power Plant. This launch marks a new stage of standardized management and control for Jiangsu Nuclear Power's production management, and also provides a practical example from Tianwan Nuclear Power Plant for CNNP's digital transformation. The EPM system is a new-generation nuclear power plant production management system independently developed by CNNP with fully independent intellectual property rights. Designed to meet the operational needs of nuclear power plant field operations, the system integrates business processes such as planning, operations, maintenance, equipment, and safety permits, unifies plant-wide work execution standards, and achieves closed-loop control across the entire production management chain. The system covers...

2026-09-01

Tianwan Nuclear Power Advances AI-Empowered Intelligent Upgrade of Maintenance Operations

In recent years, the maintenance domain of Tianwan Nuclear Power has relied on platforms such as Hezhi·Longling to address pain points in efficiency, quality, and management across the entire maintenance business chain, promoting the integration of artificial intelligence with nuclear power maintenance scenarios. To date, applications including personnel profiling, work order generation, compliance inspection, and auxiliary generation of electric actuator maintenance plans have achieved phased results, while projects such as the intelligent lifting command platform and marine tunnel cleaning robot are also under development. In personnel management, Tianwan Nuclear Power has established a seven-dimensional personnel capability scoring model, setting differentiated evaluation indicators for different maintenance positions to form position-based, data-driven personnel capability profiles. The system can integrate historical data, support multi-period data retention and trend comparison, and display personnel capability distribution through radar charts, bar charts, and trend graphs. After batch data import, the backend automatically completes normalization calculation, multi-dimensional scoring, and ranking, generating materials that include overall overview, position comparison, special analysis of responsibility performance, and improvement suggestions, providing a basis for training resource allocation, position matching, and differentiated management. To address the issues of time-consuming maintenance work order preparation and reliance on manual experience, the relevant team has developed an intelligent work order preparation assistant based on the Longhuitong intelligent agent platform, forming an application solution of "1 intelligent agent, 1 Skill capability, and 7 categories of professional knowledge bases." The system integrates the historical work order library, maintenance procedure library, equipment ledger library, risk and safety measure library, spare parts and tools library, personnel qualification library, and management procedure library. It can dynamically generate work package catalogs based on historical operation data and procedural requirements, automatically fill in work order business content, and output downloadable Excel work package drafts that can interface with the EPM system. In terms of maintenance quality control, Tianwan Nuclear Power has developed an AI intelligent agent for maintenance compliance inspection. Based on large language models and RAG retrieval-augmented generation technology, this agent can batch receive maintenance procedures, preventive maintenance program lists, and maintenance completion reports, automatically parse document content, and conduct semantic comparison. The system can check item by item the coverage of maintenance procedure implementation steps by the program, while also identifying issues in completion reports such as missing items, omissions, data anomalies, missing signatures, and logical contradictions. The structured inspection reports it outputs can be traced back to specific procedure steps or report entries, and provide rectification suggestions. Intelligent assistance is also being introduced into maintenance of key equipment. Given the large number of electric actuators in nuclear power plants, their complex models, and high maintenance requirements, Tianwan Nuclear Power has developed an auxiliary generation system for electric actuator maintenance plans. After engineering personnel input equipment information and fault descriptions, the system can call upon the electric actuator maintenance knowledge base, historical plans, and equipment data to automatically generate a draft maintenance plan, covering cause analysis, maintenance steps, technical key points, spare parts and tool preparation, and safety precautions. Verified by maintenance engineers, the relevant plans have basically met the conditions for on-site application and can save preparation time for emergency repairs. In addition to applications already deployed, Tianwan Nuclear Power is also advancing the construction of an intelligent lifting command platform. Given the high professionalism and numerous control links involved in crane lifting operations at nuclear power plants, the platform is planned to support both web and API interface usage, and to manage processes such as development, training, and online monitoring through AI models. According to the design, the platform can assist in lifting planning after inputting lifting object parameters and site conditions, recommending equipment and lifting point positions, and alerting to risks such as overload and collision. It can also generate lifting plans based on cargo information, provide handling steps, required materials, and contact person information for emergency situations, and be used for training question bank generation, operation record analysis, and rectification report output. Tianwan Nuclear Power stated that it will continue to expand AI application scenarios in the maintenance domain based on actual production needs, promote the digitalization and intelligent upgrade of maintenance operations, and strengthen network security management while advancing intelligent applications, providing support for the safe and stable operation of the units.

2026-08-28

Ministry of Ecology and Environment North China Regional Office of Nuclear and Radiation Safety Supervision Conducts Supervision of First Fuel Loading at Tianwan Nuclear Power Plant Unit 7

Recently, the first fuel loading of Unit 7 at Tianwan Nuclear Power Plant was officially initiated, with the first fuel assembly successfully loaded into the reactor core, marking the unit's formal transition into the commissioning phase with nuclear operation. This unit is a key cooperative project witnessed by the heads of state of China and Russia via video link at its groundbreaking ceremony. This fuel loading marks a significant milestone achievement in the largest strategic cooperation project in China-Russia nuclear energy cooperation. As a core and critical procedure in nuclear power engineering, the first fuel loading serves as a comprehensive and holistic verification of the unit's engineering construction quality, system commissioning effectiveness, and safety control capabilities, and is of decisive significance to the subsequent safe and stable operation of the unit. The Ministry of Ecology and Environment North China Regional Office of Nuclear and Radiation Safety Supervision (hereinafter referred to as the North China Regional Office) has consistently upheld the nuclear safety regulatory work style of "rigorous, prudent, meticulous, and practical," closely focusing on the core and critical aspects of the first fuel loading, and implementing full-coverage, full-chain, and whole-process supervision and control over this fuel loading operation, effectively safeguarding the safety and quality defense line of the loading operation.

2026-08-26

Fuel Loading Completed for Tianwan Nuclear Power Plant Unit 7, Entering Commissioning Phase with Nuclear Fuel

On August 18, with the completion of core loading correctness verification and the commencement of protective tube assembly reinstallation, the first nuclear fuel loading work for Unit 7 of the Tianwan Nuclear Power Plant in Lianyungang, Jiangsu Province, was successfully concluded, marking the entry into the commissioning phase with nuclear fuel. This laid a solid foundation for subsequent reactor criticality, grid connection, and commercial operation of the unit. Fuel loading is a key milestone in the entire lifecycle of nuclear power plant construction and a critical starting point for the unit's operation with nuclear fuel. Unit 7 of the Tianwan Nuclear Power Plant is the first VVER-1200 Generation III nuclear power unit to be constructed in China, and this fuel loading also marks the first-ever fuel loading for a VVER-1200 type nuclear power unit in China. The loading process commenced on the 12th and was fully completed by the 18th, with a total of 163 nuclear fuel assemblies loaded.

2026-08-18

First Fuel Loading Officially Begins at Tianwan Nuclear Power Plant Unit 7

On August 12, as the first fuel assembly was precisely and safely loaded into its designated position in the reactor core, the first fuel loading officially began at Unit 7 of the Tianwan Nuclear Power Plant, which is invested and controlled by China National Nuclear Corporation (CNNC)'s China Nuclear Power. This marks a solid foundation for subsequent reactor criticality and commercial operation. First fuel loading is the core procedure of implanting the "energy heart" into a nuclear reactor. As a key milestone in the full lifecycle of nuclear power construction, it not only serves as a comprehensive test of the unit's years of engineering construction quality, system commissioning level, and safety management capability, but also represents the critical starting point for the unit's nuclear-powered operation. It is understood that this fuel loading is the first-ever loading for a VVER-1200 unit in China, requiring a total of 163 nuclear fuel assemblies to be loaded...

2026-08-12

Ministry of Ecology and Environment's North China Regional Office of Nuclear and Radiation Safety Supervision Holds Regular Dialogue Meeting with Jiangsu Nuclear Power

Recently, the North China Regional Office of Nuclear and Radiation Safety Supervision under the Ministry of Ecology and Environment (hereinafter referred to as the North China Regional Office) organized the first regular dialogue meeting of 2026 with Jiangsu Nuclear Power Co., Ltd. (hereinafter referred to as Jiangsu Nuclear Power), focusing on exchanges regarding nuclear safety supervision, significant anomalies, construction, and operation management at Tianwan Nuclear Power Station. Representatives from the East China Regional Office of Nuclear and Radiation Safety Supervision under the Ministry of Ecology and Environment and CNNC Suneng Nuclear Power Co., Ltd. attended the meeting. The North China Regional Office heard reports from Jiangsu Nuclear Power on the operation and construction status of units at Tianwan Nuclear Power Station in the first half of 2026, as well as the implementation of daily supervision and management requirements from the North China Regional Office, and was briefed on recent on-site supervision work at Tianwan Nuclear Power Station...

2026-08-06

Cold Functional Test of Tianwan Nuclear Power Plant Unit 8 Successfully Completed

On August 3, the cold functional test (hereinafter referred to as the "cold test") of Tianwan Nuclear Power Plant Unit 8, constructed by China Nuclear Industry 23 Construction Co., Ltd. (CNI23), was successfully completed, marking the official transition of the unit from the engineering installation phase to the system commissioning and testing phase, laying a solid foundation for subsequent hot functional test, reactor fuel loading, and grid connection. The cold test is the first comprehensive commissioning test after a nuclear power unit enters the system commissioning phase and is one of the important milestone nodes in nuclear power plant engineering construction. Its main purpose is to verify the integrity and leak-tightness of the pressure boundary, including primary loop pipeline welds, equipment, and high-pressure sections of connected systems, comprehensively inspect on-site installation quality, and precisely identify potential hazards. It serves as the first comprehensive and systematic "physical examination" of the reactor before its operation.

2026-08-05

Central Commission for Discipline Inspection and National Supervisory Commission: Toward Innovation and Green Development, Empowering All Industries with Nuclear Energy

Important DiscourseThe nuclear industry is a high-tech strategic industry and a crucial cornerstone of national security. We must adhere to safe development and innovative development, persist in the peaceful use of nuclear energy, comprehensively enhance the core competitiveness of the nuclear industry, and write a new glorious chapter for China's nuclear industry. Empowering All Industries with Nuclear Energy: A Visit to the World's Largest Large-Scale Coupling Demonstration Base of Nuclear Energy and Petrochemical Industry. Panoramic view of the nuclear island of Unit 1 of CNNC Suneng Jiangsu Xuwei Nuclear Heating and Power Plant. Interior view of the nuclear island of Unit 1 of CNNC Suneng Jiangsu Xuwei Nuclear Heating and Power Plant. Rendering of CNNC Suneng Jiangsu Xuwei Nuclear Heating and Power Plant. Night view of Lianyungang Petrochemical Industry Base (All photos provided by CNNC). On the coast of the Yellow Sea, Lianyungang, Jiangsu Province...

2026-08-03

Ministry of Ecology and Environment's North China Nuclear and Radiation Safety Supervision Station Conducts Special Supervision on Cold Test Release for Tianwan Nuclear Power Unit 8

The Cold Functional Test (hereinafter referred to as the cold test) is the first major comprehensive test for a nuclear power unit transitioning from the installation phase to the commissioning phase. It is a key core link to verify the pressure-bearing capacity and sealing performance of the nuclear island main system and equipment under design pressure conditions, and serves as a critical milestone to ensure the subsequent safe and stable operation of the unit. Recently, the Ministry of Ecology and Environment's North China Nuclear and Radiation Safety Supervision Station (hereinafter referred to as the North China Supervision Station) conducted comprehensive supervision on the cold test control point release for Tianwan Nuclear Power Plant Unit 8. Adhering to the principle of supervision moving forward, the station consolidated the pre-test foundation. Upholding the nuclear safety supervision philosophy of "prevention first, moving the checkpoint forward," the North China Supervision Station focused on the preconditions for the cold test control point release, verified various items pending rectification one by one, and ensured that all hidden dangers were effectively addressed, building a solid safety barrier for the smooth progress of subsequent tests.

2026-07-30

The 30th meeting of the China-Russia Subcommittee on Nuclear Issues was held in Beijing.

On July 24, the 30th meeting of the Subcommittee on Nuclear Issues—held under the mechanism of regular meetings between Chinese and Russian heads of government—took place in Beijing. The meeting was co-chaired by Alexey Likhachev, Director General of Rosa

2026-07-27

Tianwan Unit 7 and Xudapu Unit 3 are expected to enter the commissioning phase within a few weeks.

Likhachev, Director General of Rosatom, stated on July 24 that Unit 7 of the Tianwan Nuclear Power Plant and Unit 3 of the Xudapu Nuclear Power Plant in China are expected to enter the commissioning phase within the coming weeks.Responding to questions fr

2026-07-27