KHNP Announces Shin Kori 4 Start Up

Korea Hydro and Nuclear Power (KHNP) said that the Shin Kori 4 reactor had reached first criticality and that the plant was on schedule to begin commercial operations by the end of August.

Shin Kori NPPTo reach commercial operations status, plants are generally expected to run at full power for 100 to 150 continuous hours.

KHNP plans to connect Shin Kori 4 to the grid before the end of the month.

The World Nuclear Association notes the unit is the second APR-1400 reactor to reach this point, following the Shin Kori 3 start up. Two more APR-14000 reactors are under construction at the site. They are not expected to go commercial until March 2022 and March 2023, respectively.

To date, there are 10 APR-1400 reactors planned, including Shin Kori 3. Besides Shin Kori 5 and 6, there are also two planed at Shin Hanul (Units 1 and 2) and four at Barakah in the United Arab Emirates.

Korea’s Nuclear Safety and Security Commission granted permission for the start up of Shin Kori 4 in February. The plant has an output capacity of 1340 MWe. Construction was authorized in 2006 for Shin Kori 3 and 4 with concrete pouring initiated in October 2008 and August 2009, respectively.

Shin Kori 3 and 4 are more than five years past their originally scheduled start up dates. Delays came about due to inspection, testing and eventual replacement of control cabling related to safety features at the two units.

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