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First Backup Emergency Diesel Generator of Hualong One Officially Available at Sanao Nuclear Power Unit 2

On October 2, the first backup emergency diesel generator (9LHW) of Hualong One completed the replacement grid connection test at Sanao Nuclear Power Unit 2 and was officially put into service. The equipment can replace any one of the original 12 emergency diesel generators (EDGs) in Phase I and Phase II projects, significantly improving the redundancy, reliability, and maintenance flexibility of the plant's emergency power supply. Sanao Nuclear Power Phase I and Phase II each have 3 emergency busbars, with one EDG configured for each busbar. However, due to the absence of cross-power supply for loads, the preventive maintenance windows of the original units were concentrated, affecting the overhaul schedule. Since 2021, Cangnan Nuclear Power has promoted the project of adding backup diesel generators, improving from the design source, building a new backup emergency diesel generator building (BDD), and constructing corridors and cables connected to each unit...

2026-10-03

Rosatom Proposes New VVER-1000 Nuclear Power Unit to Armenia

Alexey Likhachev, Director General of Rosatom, recently stated in Yerevan that the company has submitted specific proposals to the Armenian government for the construction of a gigawatt-class VVER-1000 nuclear power unit. The proposal is based on an assessment of Armenia's electricity demand through 2040 and plans to adopt Russia's mature pressurized water reactor technology, the VVER-1000, which features Generation 3+ safety systems and competitive electricity pricing advantages, and has already been built and commissioned in Russia, India, Iran, and other countries. The Russian side calls this option the optimal choice for the international market and is willing to develop the project into a comprehensive cooperation project attracting international suppliers. Previously, Likhachev held talks with Armenian Prime Minister Nikol Pashinyan and...

2026-10-03

Inner Dome Concrete Pouring of Zhangzhou Nuclear Power Unit 3 Completed

On September 30, as the last batch of concrete was successfully poured into the formwork, China Nuclear Industry 24 Construction Co., Ltd. successfully completed the concrete pouring of the inner dome of the reactor building of the Hualong One Zhangzhou Nuclear Power Unit 3. The achievement of this key milestone marks the full completion of the civil construction of the inner containment for this unit, laying a solid foundation for the subsequent prestressing construction of the containment and the installation of core nuclear equipment. As an important safety barrier of the Hualong One independent third-generation nuclear power technology, the inner dome is located at the top of the nuclear island, and its core function is to ensure the integrity and absolute leak-tightness of the reactor building and prevent the leakage of radioactive substances. Faced with nuclear construction technical challenges such as the complex curved surface structure of the dome and the high difficulty of high-altitude operations, the Zhangzhou Nuclear Power Project Department...

2026-10-02

The 4th refueling overhaul of Tianwan Nuclear Power Unit 6 officially begins

At 06:00 on October 1, the main control operator of Tianwan Nuclear Power Unit 6 completed the turbine-generator trip operation, and the unit was officially disconnected from the East China Power Grid, marking the official start of the Tianwan Nuclear Power OT604 overhaul (the 4th refueling overhaul of Unit 6). During the preparation period for the OT604 overhaul, Jiangsu Nuclear Power and China Nuclear Operation and Maintenance deepened joint Party building study and practice, solidly advanced various overhaul preparation tasks, strictly implemented the "721" working principle of "seven parts preparation, two parts execution, one part feedback," conducted discussions and simulations on key milestones in advance, identified and investigated difficulties and bottlenecks in the overhaul, and formulated detailed countermeasures. This overhaul is a Class C overhaul and is also the final battle of the annual overhaul tasks at the Tianwan Nuclear Power Base. Jiangsu Nuclear Power...

2026-10-01

Pressurizer of Lufeng Nuclear Power Unit 1 Successfully Hoisted into Place

On September 30, the pressurizer of Lufeng Nuclear Power Unit 1, constructed by China Nuclear Industry 23 Construction Co., Ltd., was successfully hoisted into place. The success of this hoisting marks major progress in the installation of the primary circuit main equipment in the nuclear island of Lufeng Nuclear Power Unit 1, laying a solid foundation for the subsequent surge line welding, system equipment installation, and commissioning work. The pressurizer is a core main equipment of the nuclear island reactor coolant system and a Class 1 nuclear safety equipment. It undertakes the tasks of pressure regulation and overpressure protection for the primary circuit system and is key equipment for ensuring the safe and stable operation of the reactor. This equipment is a vertical cylindrical pressure vessel with a body height of more than ten meters and a total hoisting weight of over one hundred tons. It is installed in the pressurizer compartment of the CA01 module, with stringent design and manufacturing standards...

2026-09-30

Main Coolant Piping Welding of Lufeng Nuclear Power Unit 6 Successfully Completed

On September 28, the main coolant piping welding of the nuclear island of Lufeng Nuclear Power Unit 6 was successfully completed. All non-destructive testing of the main coolant piping was finished, with the first-pass qualification rate of radiographic testing (RT)/ultrasonic testing (UT) reaching 100%, laying a solid foundation for subsequent key milestones such as nuclear loop flushing and cold functional testing. Facing the high standards of main coolant piping welding, the project department strictly implemented nuclear safety supervision and control requirements, carried out precondition verification across all dimensions of personnel, machines, materials, methods, and environment, established a main coolant piping welding control zone, strictly controlled the working environment including temperature, humidity, and cleanliness, and ensured stable and controllable welding conditions. The project team fully drew on the main coolant piping welding experience of Unit 5, formulated a special plan and implemented full-process management, and through digital monitoring means throughout the entire welding process, tracked key parameters such as welding deformation and temperature in real time, refined the process disclosure, in-process inspection, and quality acceptance procedures for each weld joint, and applied the work style of "strict, cautious, meticulous, and pragmatic" to every welding operation and every weld seam, ensuring the successful completion of the main coolant piping welding of Unit 6.

2026-09-30

Dongfang Electric Signs Low-Pressure Diaphragm Supply Agreement with Électricité de France, Supporting the Upgrade and Retrofit of European Pressurized Water Reactor Nuclear Power Units

Recently, Dongfang Electric International Corporation (hereinafter referred to as "Dongfang International"), a subsidiary of China Dongfang Electric Group Co., Ltd., and Arabelle, a subsidiary of Électricité de France (EDF), officially signed a nuclear power steam turbine low-pressure diaphragm supply agreement. According to the agreement, Dongfang Electric will serve as a key equipment supplier, providing core steam turbine low-pressure diaphragm components for the life extension and modernization technical retrofit projects of pressurized water reactor (PWR) nuclear power units under Électricité de France. For more than three decades, Dongfang Electric Group and Électricité de France have consistently maintained close strategic collaboration in the field of civil nuclear energy, from...

2026-09-28

Pressurizer of Zhangzhou Nuclear Power Unit 3 Hoisted into Place

At 19:03 on September 20, the pressurizer of Zhangzhou Nuclear Power Unit 3 was hoisted into place. During this pressurizer hoisting operation, the pressurizer was horizontally lifted to the +16.5m platform by a gantry crane, transported by a heavy-duty vehicle into the reactor building, then turned and erected by the polar crane, and finally hoisted into place. The pressurizer is one of the core main equipment items of the nuclear island reactor coolant system, and its main functions include primary loop pressure control and overpressure protection. When the temperature and pressure inside the reactor fluctuate, the pressurizer can maintain the temperature and pressure within the reactor in a safe range by adjusting the flow rate and temperature of the coolant water, ensuring the safe and stable operation of the reactor. At the same time, the pressurizer is...

2026-09-21

CGN's 33 in-operation nuclear power units achieve RMB-denominated pricing and settlement for operational period insurance

On September 10, the "CGN In-Service Nuclear Power Plant Operational Period Insurance Project Co-Insurance Agreement" was signed in Shenzhen. The agreement achieves RMB-denominated pricing and settlement for major types of nuclear power plant operational period insurance, changing the convention of China's nuclear insurance market's over thirty years of primarily relying on foreign currency transactions. Nuclear insurance is an important type of insurance for ensuring the safe and stable operation of nuclear power units. Due to the enormous insured amount of a single policy, it typically requires joint underwriting by hundreds of insurance companies both domestically and internationally, and is regarded by the insurance industry as one of the most special and complex types of insurance. Since China's first nuclear power plant operational insurance policy——the Daya Bay Nuclear Power Plant operational insurance policy——was issued in 1993, China's nuclear power industry has long followed mature foreign models...

2026-09-11

Rosenergoatom Celebrates 34 Years: Operating 33 Nuclear Power Units

On September 7, Rosenergoatom celebrated its 34th anniversary. The company is the management company of the electric power division of Rosatom, Russia's state atomic energy corporation. In 1992, Russian nuclear power plants were consolidated into a unified nuclear power operating organization, leading to the establishment of Rosenergoatom. Currently, Rosenergoatom is Russia's largest electricity generator and one of the world's major nuclear power operators in terms of installed capacity. The company operates 11 nuclear power plants with 33 units, including the Akademik Lomonosov floating nuclear power unit comprising two reactor plants, with a total installed capacity exceeding 29.8 GW. Bilibino NPP...

2026-09-08

Huaneng Hainan Changjiang Nuclear Power Unit 4 Completes Cold Functional Test

At 12:50 on September 6, the cold functional test of Unit 4 at Huaneng Hainan Changjiang Nuclear Power was successfully completed, marking the unit's official full entry into the commissioning phase and laying the foundation for subsequent high-quality power generation and grid connection. This project is the first large-scale pressurized water reactor nuclear power project constructed under majority ownership by China Huaneng Group Co., Ltd., and also the first Hualong One nuclear power project in Hainan Province. The cold functional test, also known as the cold hydrostatic test of the primary circuit in a nuclear power plant, is an important milestone in nuclear power engineering construction. It is primarily used to comprehensively verify the integrity and leak-tightness of pressure boundaries, including primary circuit pipeline welds, equipment, and high-pressure sections of connected systems, ensuring the safety and stability of the primary circuit during subsequent operation...

2026-09-08

China and Russia Advance Cooperation on Tianwan and Xudabao Nuclear Power Plant Construction

During the meeting of the China-Russia Intergovernmental Energy Committee, Chinese Vice Premier Ding Xuexiang stated that enterprises from both countries are expanding cooperation in the energy sector, strengthening power technology exchanges, and exploring the possibility of reverse power supply from China to Russia. During the meeting, Ding Xuexiang also mentioned the construction progress of the Tianwan and Xudabao nuclear power plants. He noted that the two countries are systematically advancing the relevant nuclear power projects, with Unit 1 of the Xudabao Nuclear Power Plant scheduled to commence operation by the end of this year. The meeting was held as part of the Eastern Economic Forum activities. In addition to nuclear power projects, China and Russia also exchanged views on cooperation in the power sector...

2026-09-05

Guangdong Taipingling Nuclear Power Unit 3 Completes Lifting of Reactor Cavity Pool Wall Module

According to CGNPC Huizhou Nuclear Power Co., Ltd., the reactor cavity pool wall module of Unit 3 at the CGN Guangdong Taipingling Nuclear Power Project was recently successfully lifted, creating conditions for the advancement of subsequent engineering construction. The reactor cavity pool wall is a key stainless steel cladding structure within the reactor building and serves as an important safety cooling barrier for the reactor. Following the completion of this lifting, phased progress has been achieved in the construction of key structures related to the reactor building of Unit 3, laying the foundation for the safe operation of the unit after it is put into service...

2026-09-03

Mobilization Meeting for High-Quality Fuel Loading of Haiyang Nuclear Power Unit 3 Convened

On September 1, Shandong Nuclear Power organized a themed joint Party building learning session and the mobilization meeting for high-quality fuel loading of Haiyang Nuclear Power Unit 3. Centering on the goal of high-quality fuel loading for Unit 3, the meeting further unified understanding, clarified responsibilities, and promoted the safe, orderly, and high-quality implementation of fuel loading preparations, laying the foundation for the subsequent commissioning of the Phase II project of Haiyang Nuclear Power. The meeting conducted a themed joint Party building learning session. The Haiyang Project Department of Shanghai Nuclear Engineering Research and Design Institute (SNERDI), the Commissioning Center of SNERDI, China Nuclear Industry Fifth Construction Co., Ltd., and Jiangsu Electric Power Construction No. 3 Engineering Company respectively reported on the fuel loading preparation status of Unit 3. Participants discussed topics including Party building leading project breakthroughs and ensuring high-quality fuel loading of Unit 3. The meeting also commended...

2026-09-02

Zhejiang Jinqimen Nuclear Power Unit 1 Pressurizer Relief Tank Successfully Hoisted into Place

On August 30, the pressurizer relief tank, a major nuclear island equipment item of Unit 1 at Zhejiang Jinqimen Nuclear Power Plant, contracted by China Nuclear Industry Fifth Construction Co., Ltd. (CNF), was successfully hoisted into place. The entire hoisting process was smooth and orderly, with overall safety and quality under control. This hoisting has laid a solid foundation for the subsequent installation of main nuclear island equipment and the construction of the primary loop system. The pressurizer relief tank is an important auxiliary equipment of the reactor coolant system in a nuclear power plant. Its main function is to collect and condense the high-temperature and high-pressure steam discharged from the pressurizer safety valves, ensuring the safe and stable operation of the reactor system. The relief tank hoisted this time is pre-installed equipment in the nuclear island. The main body of the equipment is heavy in weight and large in size, with limited hoisting workspace. After being hoisted into place, it needs to be placed in the nuclear island building for a long period, and subsequent construction will be constrained by space, making it necessary to introduce the equipment precisely within the civil construction window period.

2026-09-02