Unit 4 of the Tianwan Nuclear Power Plant in China entered commercial operation this past weekend after completing commissioning. It began supplying power to the country’s national grid on Dec. 22.

Tianwan NPP is the largest facility built with a Russian-Chinese framework of economic cooperation, with Units 1 through 4 based on the VVER-1000 reactor type. Units 1 and 2 entered commercial operation in 2007, and Rosatom handed over Unit 3 to Jiangsu Nuclear Power Corp. (JNPC) in March of this year.

Tianwan Unit 4 was brought to its minimum controllable power level on Sept. 30, marking the final stage of first criticality procedures, which began Aug. 25 when the first fuel assembly was installed in the reactor. A total of 163 fuel assemblies were ultimately loaded.

Russia’s Atomstroyexport was general contractor for the project, working with JNPC. Alexey Bannik, vice president for projects in China with Rosatom’s engineering division, said the start of commercial operation of Unit 4 “means that a two-year warranty period for the plant operation has commenced, and once expired the Unit will ultimately be handed over to the Chinese Party.”…

Read More »