Hongyanhe Unit 6 Reaches First Criticality

China General Nuclear said the first criticality – a sustained nuclear reaction – had been achieved on April 21 at the Hongyanhe nuclear power plant’s Unit 6, the second of two ACPR-1000 reactors built at the plant.

Honganhe NPPThe achievement “marks the official entry of the unit into the operating state with power,” CGN said.

The new unit is one of two 1080 MWe reactors designed by CGN, which make up Hongyanhe Phase II. Construction on the two units began in March 2015 with construction of Unit 6 commencing in July 2016.

The previous four units at the plant, Phase I, are CPR-1000 pressurized water reactors that went on line between June 2013 (Unit 1) followed by startups in May 2014, August 2015 and September 2016. Unit 6 marks the sixth startup within a nine-year period.

The plant, in the Liaoning Province in northeastern China, is owned and operated by the Liaoning Hongyanhe Nuclear Power Company, which is 90 percent owned by CGN and the State Power Investment Corporation and 10 percent owned by the Dalian Municipal Construction Investment Company.

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