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 SiteStart dateTitleDescription
IR 05000220/2023003Nine Mile Point25 October 2023Integrated Inspection Report 05000220/2023003 and 05000410/2023003
ENS 56810Nine Mile Point23 October 2023 00:48:00Average Power Range Monitors Declared InoperableThe following information was provided by the licensee via phone and email: On October 21, 2023, at 2048 EDT, reactor recirculation pump (RRP) 12 tripped. The cause for the trip is under investigation. Following the RRP trip, the average power range monitors (APRMs) flow bias trips were inoperable due to reverse flow through RRP 12. The APRMs were restored to operable on October 21, 2023, at 2058 EDT, when the RRP 12 discharge blocking valve was closed. This 8-hour non-emergency report is being made based upon requirements of 10CFR50.72(b)(3)(v)(A) which states: "Licensee shall notify the NRC of any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to: (A) Shut down the reactor and maintain it in a safe shutdown condition." The NRC Resident Inspector has been notified.
ML23290A147Nuclear Energy Institute17 October 2023NEI 99-02 Rev 8 Draft 9 29 2023 Redline Version
ML23290A125Nuclear Energy Institute17 October 2023NEI - NEI 99-02, Rev. 8, Draft Regulatory Assessment Performance Indicator Guideline
ML23291A423Susquehanna12 October 20231 to Updated Final Safety Analysis Report, Chapter 8, Section 8.3, On-Site Power Systems
ML23291A422Susquehanna12 October 20231 to Updated Final Safety Analysis Report, Chapter 7, Section 7.7, Controls Systems Not Required for Safety
ML23291A412Susquehanna12 October 20231 to Updated Final Safety Analysis Report, Chapter 3, Section 3.13, Compliance with NRC Regulatory Guides
ML23291A391Susquehanna12 October 20231 to Updated Final Safety Analysis Report, Chapter 5, Section 5.4, Component and Subsystem Design
ML23292A155Susquehanna12 October 20231 to Updated Final Safety Analysis Report, Chapter 9, Section 9.2, Water Systems
ML23292A159Susquehanna12 October 20231 to Updated Final Safety Analysis Report, Chapter 15, Appendix 15C, Susquehanna Steam Electric Station Unit 1 Final Safety Analysis Report-Cycle Specific Data