Doosan Heavy Industries and Construction has delivered the first AP1000 nuclear reactor vessel, which will be installed at the Sanmen nuclear power plant in Zhejiang, China.

The 340t reactor was manufactured at Doosan’s Changwon plant in the Republic of Korea and is expected to start commercial operations in 2013.

The nuclear power plant is jointly being developed by Westinghouse Electric in consortium with the Shaw Group, China’s State Nuclear Power Technology Corp and Sanmen Nuclear Power.

Westinghouse and Shaw Group has signed contracts to provide four AP1000 pressurised water reactors in China, two in Sanmen in Zhejiang and another pair in Haiyang in Shandong province.

The remaining three units are expected to come online in 2014 and 2015.