en.Wedoany.com Reported - The South Korean Nuclear Safety Commission (NSSC) announced on April 10th that the commission held a written meeting on the 9th, reviewing and approving applications submitted by Korea Hydro & Nuclear Power Co., Ltd. (KHNP), Korea Nuclear Fuel Co., Ltd. (KNF), and the Korea Atomic Energy Research Institute (KAERI) regarding changes to construction and operation licenses as well as changes to decommissioning licenses.
The NSSC explained that, based on the technical review results from the Korea Institute of Nuclear Safety (KINS), it confirmed the safety aspects and determined that the relevant applications comply with the licensing standards of the Nuclear Safety Act.
Korea Hydro & Nuclear Power Co., Ltd. (KHNP) submitted applications for modifications at the Shin Wolseong Nuclear Power Plant Units 1 and 2, involving the removal of safety-class auxiliary current transformers. These transformers are no longer necessary due to the upgrade of protection relays from analog to digital systems, and similar modifications are being carried out at other nuclear power plants. The NSSC confirmed that after removing the auxiliary current transformers, the main current transformers will still function properly, will not affect the safety of the power supply facilities, and comply with the licensing standards.
Revisions to the quality assurance plans for all nuclear power plants, including the unification of the quality organization, which involves transferring the command and supervision authority of quality work organizations affiliated with the Korea Nuclear Central Research Institute and overseas branches to the headquarters' Quality Assurance Department, were confirmed by the NSSC to comply with licensing standards.
KNF improved its procedures so that if the radioactive concentration of condensate generated from liquid radioactive waste treatment in Nuclear Fuel Building 1 exceeds the discharge management standards, the waste will be immediately reprocessed without requiring re-measurement of the radioactive concentration. Previously, re-measurement was required before deciding on reprocessing.
Furthermore, changes to improve operational safety, such as circulating used cleaning fluid via redundant pumps instead of supplying deionized water through a single path during the cleaning process of the uranium hexafluoride (UF6) cleaning facilities in Nuclear Fuel Buildings 2 and 3, were also confirmed to comply with licensing standards.
The Korea Atomic Energy Research Institute (KAERI)'s modification plan this time involves changing the main entrance of the fuel test facility from a rotating door style to a double-door style. This decision was made to improve maintenance convenience and emergency evacuation efficiency. The Nuclear Safety Commission confirmed that this modification will not affect the safety of the facility.
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