Steam turbine cylinder installed for Haiyang 3
Installation of the high and low pressure cylinders of the steam turbine for unit 3 of the Haiyang Nuclear Power Plant project in China's Shandong province has been completed.
According to a report published by China Nuclear Energy Association (CNEA) the installation of the conventional island steam turbine cylinder "is the most important, precise and complex work in the installation of the steam turbine equipment".
Following the successful installation, future stages will see lubricating oil flushing and secondary circuit joint flushing of Unit 3.
The construction of two CAP1000 reactors - the Chinese version of the Westinghouse AP1000 - at each of the Haiyang, Sanmen and Lufeng nuclear power plant sites in China was approved by the country's State Council on 20 April 2022. The approvals were for Haiyang 3 and 4, Sanmen units 3 and 4 and units 5 and 6 of the Lufeng plant. The Sanmen and Haiyang plants are already home to two AP1000 units each.
Unit 1 of the Haiyang plant entered commercial operation in October 2018, with unit 2 following in January 2019. Together, Haiyang units 1 and 2 can provide some 20 TWh of electricity to the grid annually, sufficient to meet one-third of household demand in Shandong province.
The first safety-related concrete was poured for the nuclear island of Haiyang unit 3 in July 2022, and in March the outer steel dome of the nuclear island containment building was hoisted into place. Construction of Haiyang 4 began in April last year. The planned construction period for Haiyang 3 and 4 was 56 months, with the two units scheduled to be fully operational in 2027.
When the four units are operating at Haiyang they will be able to meet the electricity needs of half of the residents in Shandong Province.
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