KHNP Wolseong Unit 3 Begins 22nd Scheduled Preventive Maintenance on September 26
Korea Hydro & Nuclear Power's Wolseong Nuclear Power Plant Headquarters (Director: Jung Wonho) announced that Wolseong Unit 3 (a 700,000 kW pressurized heavy water reactor) was shut down at 9:00 a.m. on September 26 for a scheduled inspection and preventive maintenance to enhance reactor safety, marking the start of its 22nd scheduled preventive maintenance process, which is expected to last approximately 42 days.
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During this scheduled preventive maintenance period, Wolseong Unit 3 will undergo a regular inspection in accordance with the Nuclear Safety Act, replacement of the passive catalytic hydrogen recombiner for design basis accidents, disassembly and inspection of the main generator and low-pressure turbine #1, among other tasks. Power generation is expected to resume around November 7, 2025, after these procedures are completed.
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