NSSC Approves Restart of Hanul Unit 2

[Asia Economy Reporter Hyunseok Yoo] The Nuclear Safety and Security Commission announced on the 29th that it has completed the investigation and safety verification of the incidents at Hanul Unit 2, where both the turbine and reactor were shut down, and Hanul Unit 1, where only the turbine was shut down, and approved the restart of Hanul Unit 2.

Korea Hydro & Nuclear Power (KHNP) plans to gradually increase the output of Hanul Unit 1, where only the turbine was stopped and the reactor output was maintained at about 1%.

The NSSC explained that during the incident process at Hanul Units 1 and 2, the operators' actions were carried out according to relevant procedures, and the safety equipment operated as designed. They also confirmed that there was no abnormal increase in radiation inside or outside the power plant.

Marine organisms that had entered the intake were removed, damaged nets were replaced, and KHNP's patrol and early response procedures to prevent marine organism intrusion were strengthened. Additionally, follow-up measures such as the installation of marine organism surveillance cameras (CCTV) and reinforcement and addition of nets will be implemented.

On the 22nd, a type of large plankton called 'salpa' damaged the external nets of the intake at Hanul Units 1 and 2. As a result, a sudden influx into the intakes of Units 1 and 2 caused the turbine and reactor of Hanul Unit 2 to shut down, and the turbine of Hanul Unit 1 to stop.

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