Seawater Pump Design Scheme for Phase I Project of Shandong Zhaoyuan Nuclear Power Plant Passes Review

On July 22, 2026, the industry review meeting for the seawater pump design scheme of the Phase I project of Shandong Zhaoyuan Nuclear Power Plant, organized by the China Nuclear Industry Survey and Design Association (hereinafter referred to as the Association), was successfully held at Changsha Pump Works Co., Ltd.

The project involves four main types of equipment: seawater intake pumps, distribution pumps, and high/low-pressure backwash pumps. The seawater intake pump, as the core rotating equipment of the water intake and discharge system, adopts for the first time a large horizontal split-case pump configuration, undertaking long-distance, high-lift seawater delivery tasks. This breaks through the siting constraints of nuclear power plants adjacent to the coastline and provides important demonstration and technology promotion value for the application of HPR1000 at inland-side coastal sites.

The review panel consists of 9 industry experts from China General Nuclear Power Operations Co., Ltd., State Nuclear Power Demonstration Plant Co., Ltd., Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., East China Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group, State Nuclear Electric Power Planning Design & Research Institute Co., Ltd., Guangdong Electric Power Design Institute Co., Ltd., CNNC Yulin Nuclear Power Co., Ltd., Chongqing Pump Works Co., Ltd., and Xiangtan Electric Manufacturing Co., Ltd., with Xu Dezhong from China General Nuclear Power Operations Co., Ltd. serving as the panel leader. Representatives from multiple participating organizations attended the review meeting, including China Nuclear Power Engineering Co., Ltd., Shandong Zhaoyuan Nuclear Power Co., Ltd., Shenzhen China Nuclear Power Engineering Design Co., Ltd., China General Nuclear Power Operations Co., Ltd., North China Municipal Engineering Design & Research Institute Co., Ltd., Hunan Sund Technological Corporation, and Wolong Electric Nanyang Explosion-Proof Group Co., Ltd.

During the meeting, project engineers presented special design scheme reports to the review committee experts, focusing on key technical aspects including hydraulic model selection calculation and analysis, structural design and strength analysis, core material selection, bearing structure and lubrication methods, shaft seal types and flushing, implementation measures for nuclear power project experience feedback, auxiliary motor lubrication and cooling design, and equipment safety redundancy configuration.

During the review process, the attending experts carefully listened to the full technical scheme presentations, meticulously reviewed relevant documentation, and conducted rigorous inquiries and in-depth discussions on key dimensions. Combined with industry standards, nuclear power engineering specifications, and operation and maintenance experience from similar projects, they put forward targeted optimization suggestions and professional guidance recommendations. The project technical team responded to and recorded each question and improvement suggestion raised by the expert panel. In subsequent work, the team will fully incorporate the valuable opinions of all experts, continuously optimize the design scheme, strictly control product quality, and make every effort to ensure the smooth progress of complete equipment supply and on-site installation and commissioning.

The review committee determined that the seawater pump design scheme for the Phase I project of Shandong Zhaoyuan Nuclear Power Plant is reasonable, technically feasible, and all indicators meet the technical requirements. The scheme was approved to pass the review.