At 19:52 on February 28, the first refueling maintenance of unit 1 of Haiyang nuclear power plant in Shandong Province was completed, and the unit was successfully connected to the grid at one time, setting a record of the shortest duration of the first refueling maintenance of nuclear power units in China. At the same time, unit 2 continued to operate safely and stably, and the first phase of the national power nuclear heating commercial demonstration project was outstanding, bringing constant light and warmth to the local people.
Similar to the coal-fired power unit, in order to ensure the safety, full load and economic operation of the nuclear power unit as a team leader, according to the planning requirements, the nuclear power unit takes 18 months as a cycle to carry out nuclear fuel assembly replacement, unit physical examination protection, functional test and other operations.
During the novel coronavirus pneumonia, the owner of Haiyang nuclear power plant, Shandong Nuclear Power Co., Ltd., defeated the difficulties of the Spring Festival holiday and epidemic prevention and control, and launched more than 4000 production partners of 88 partners, and kept on fighting for 45 days. The nuclear fuel replacement and 5815 maintenance and experimental projects of unit 1 were carried out safely and efficiently. The physical examination and protection of Haiyang nuclear power plant completed the first phase project of Haiyang nuclear power plant to fully resume production and keep electricity warm.
During the refuelling and maintenance of unit 1, combined with the field practice, scientific and technological innovation and development were strengthened, and scientific and technological achievements were frequent. During this period, the first three generations of domestic nuclear grade zirconium materials officially entered the core, rewriting the situation that all nuclear grade zirconium materials in China have been imported for a long time; the independently planned core loading plan, with outstanding physical experiment results, broke the monopoly of foreign skills; for the first time, a number of advanced robots and automatic inspection and repair equipment were adopted, ensuring the quality of in-service inspection and reducing the cost The radiation dose of personnel was measured, 23 technical achievements, 19 special tools and processes were developed, and 78 technical transformation operations were completed.
Recall the first cycle of fuel cycle of unit 1, the unit runs smoothly and has excellent performance. The cumulative generating capacity of 12 billion 870 million kwh is fully verified the advanced nature of the three generation nuclear power technology and the reliability of the unit. On February 24, the State Nuclear Safety Administration issued the operation license of Haiyang nuclear power plant units 1 and 2 to Shandong Nuclear Power Co., Ltd., and previously issued the operation license of Sanmen Nuclear Power Plant Units 1 and 2 to Zhejiang Sanmen Nuclear Power Co., Ltd. on February 14. This means that the operation results of 4 units of the AP1000 support project for more than one year meet the planning requirements, which indicates that the provincial and even national nuclear power teams can further develop their nuclear power skills in the third generation, and have accumulated sufficient experience for subsequent nuclear power projects.
