The following information was provided by the licensee via phone and email:
A reportable occurrence [was] identified on September 15, 2025, for a failure to implement administrative controls. Per technical specification 6.2(b).4, the facility reactor safeguards committee (RSC) shall determine whether changes in the facility as described in the safety analysis report (SAR) may be accomplished in accordance with 10 CFR 50.59, without obtaining prior NRC approval via license amendment pursuant to 10 CFR 50.90. On September 10, 2025, changes to the normal and emergency electrical power systems described in the SAR were made without completing a review and acquiring RSC approval for the change.
The reactor is and will remain shutdown until review and approval by the RSC of corrective actions is completed in accordance with Technical Specifications.
A written report will be submitted within ten days summarizing the reportable occurrence.