Semantic search
Jump to navigation
Jump to search
Site | Start date | Title | Description | |
---|---|---|---|---|
ML23361A157 | Clinton | 24 January 2024 | Audit Plan in Support of Review of License Amendment Request Regarding Revision of Technical Specifications Related to Reactor Water Cleanup Isolation | |
L-MT-23-054, Subsequent License Renewal Application Supplement 8 | Monticello | 11 January 2024 | Subsequent License Renewal Application Supplement 8 | |
ENS 56987 | Brunswick | 2 January 2024 04:33:00 | Invalid Actuation of Containment Isolation Valves | The following information was provided by the licensee via phone and email: This 60-day optional telephone notification is being made in lieu of a Licensee Event Report (LER) submittal as allowed by 10 CFR 50.73(a)(1). This notification is made pursuant to the reporting requirements specified in 10 CFR 50.73(a)(2)(iv)(A) for an invalid actuation of one of the systems listed in 10 CFR 50.73(a)(2)(iv)(B). At approximately 2333 EST on January 1, 2024, an invalid actuation of group 6 primary containment isolation valves (PCIVs) (i.e., containment atmospheric control/monitoring (CAC/CAM) and post-accident sampling system (PASS) isolation valves) occurred. Reactor building ventilation isolated and standby gas treatment started per design. No manipulations associated with the isolation or reset logic were ongoing at the time. Troubleshooting determined that the group 6 isolation signal resulted from spurious relay contact actuation in the main stack radiation high-high isolation logic due to relay contact oxidation. The main stack radiation monitor is a shared component that sends isolation signals to Unit 1 and Unit 2. There were no Unit 1 actuations. Only the relay contacts associated with Unit 2 actuated. The relay has been replaced. The actuation was not initiated in response to actual plant conditions. It was not an intentional manual initiation and there were no parameters satisfying the requirements for initiation of the system. Therefore, this event has been determined to be an invalid actuation. During this event the PCIVs functioned successfully, and the actuations were complete. This event did not result in any adverse impact to the health and safety of the public. The NRC Resident Inspector had been notified. |
ML23360A760 | 26 December 2023 | NRC Enforcement Manual, Rev 11, Change 15 | ||
IR 05000254/2023010 | Quad Cities | 20 December 2023 | Comprehensive Engineering Team Inspection Report 05000254/2023010 and 05000265/2023010 | |
ML23352A254 | Susquehanna | 18 December 2023 | NRC LIC-109 Acceptance Review Results for Susquehanna Steam Electric Station, License Amendment Request to Revise Technical Specifications (TS) to Adopt TSTF-568 | |
IR 05000528/2023011 | Palo Verde | 18 December 2023 | License Renewal Inspection Report 05000528/2023011 | |
ML23335A112 | Hope Creek | 15 December 2023 | Retest Schedule for Drywell to Suppression Chamber Vacuum Breakers | |
ML23234A176 | 14 December 2023 | IMC 0309 Reactive Inspection Decision Basis for Power Reactors | ||
JAFP-23-0065, License Amendment Request to Revise Technical Specifications to Adopt TSTF-529, Clarify Use and Application Rules, Revision 4, and Administrative Changes to the Technical Specifications | FitzPatrick | 14 December 2023 | License Amendment Request to Revise Technical Specifications to Adopt TSTF-529, Clarify Use and Application Rules, Revision 4, and Administrative Changes to the Technical Specifications |