en.Wedoany.com Reported - The Nuclear Safety and Security Commission of South Korea announced on the 26th that it has approved the restart of Hanul Unit 2, located in Uljin, North Gyeongsang Province.
The commission stated that Hanul Unit 2, which has been undergoing regular inspections since the 20th of last month, received criticality approval on the 26th. Criticality refers to a state where the nuclear fission chain reaction in the reactor core remains stable and the neutron count reaches equilibrium; when the reactor achieves criticality, it is considered to have entered the power operation phase.
A total of 95 items were covered in this regular inspection. The Nuclear Safety and Security Commission noted that 85 of these inspections, which needed to be confirmed before reactor criticality, have been completed, and based on this, it was determined that criticality could be safely implemented. During the inspection process, the commission also verified whether the fire protection barriers installed by Korea Hydro & Nuclear Power Co., Ltd. to enhance the fire resistance of safety-related cables were properly constructed, and inspected the installation status and hydrogen removal performance of the newly replaced passive autocatalytic recombiners for design basis accidents.
The commission stated that after Hanul Unit 2 reaches criticality, remaining inspection items such as power ascension tests will continue, and safety will be continuously confirmed during subsequent operational preparations. This means that although the unit has received the key approval for restart, it will still need to undergo further regulatory verification before ultimately resuming stable power operation, and the results of these related inspections will also determine its subsequent operational pace.
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