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TISCO supports the nation in independent nuclear technological innovation with key material

By Xu Qing, Zhang Baolin and Yin Wei UpDate 2021-02-05

On January 30th, "Hualong No.1", the world's first batch of Fujian fuqing nuclear power plant No.5 units, was put into commercial operation, marking China an independent master of the third generation advanced nuclear power technology. As the primary supplier of stainless steel plates for the main equipment of the third generation nuclear power technology in China, TISCO has provided strong material support for the construction of Hualong No.1 nuclear power plant with its professional and mature R&D and production capacity.

"Hualong No.1" is the third generation nuclear power reactor with independent intellectual property rights and independent design in China. It is the first Chinese-made nuclear power reactor that goes abroad, so the localization of key materials is of great significance. The stainless steel materials used in "Hualong No.1" reactor internals requires high temperature resistance, high pressure resistance and corrosion resistance. Besides, many products are oversize and overweight. Those special features make the production extremely difficult. Facing such requirements, TISCO's R&D team carried out all-round technical research, and achieved the first launch, original creation and first use of key stainless steel plates for Hualong No.1. Among them, the nuclear grade stainless steel plates of Fuqing Units 5 and 6 are predominantly provided by TISCO, and the nuclear grade I stainless steel plates for the internals of 12 "Hualong No.1" nuclear power units, including those in Guangdong, Fujian, Hainan, Guangxi and Zhejiang, are 100% produced by TISCO.

As the pioneer enterprise to develop and produce nuclear power stainless steel materials in China, TISCO has always insisted on independent innovation and constantly challenged its limits, providing a concrete guarantee for the development of nuclear power industry in China. In addition to nuclear grade stainless steel plates, TISCO also took the lead in developing and producing a series of special stainless steel profiles and high-grade cold-rolled silicon steels with thick coating, which played an important role in breaking the long-term dependence on material imports and realizing domestic production for China's nuclear power sector. At the same time, TISCO's nuclear power steels also went to the international market and were used in the construction of K2 and K3 nuclear power plants in Karachi, Pakistan. The export marks that TISCO has reached a new level in the production, quality assurance and process control of materials for nuclear power.

"We will thoroughly implement the spirit of the important speech of General Secretary Xi's inspection and investigation to China Baowu, make persistent efforts in scientific and technological innovation, climb the technology peak bravely, continue to work hard to overcome the bottlenecks of high-end stainless steel materials for nuclear power, and integrate TISCO into China Baowu stainless steel industry as the flagship platform company with world-wide competence", the person in charge of TISCO's nuclear power materials research and development team said.