I-131

Isotope Iodine - 131

	Start date	Site	Title	Topic
ML26056A010	25 February 2026	99902049	Final Safety Evaluation for the SMR-300 Design Basis Accident Radiological Consequences Analysis Methodology Licensing Topical Report, HI-2241098, Revision 1
ML26035A141	10 February 2026	Beaver Valley Davis Besse Perry Comanche Peak	Issuance of Amendments	Shutdown Margin Anticipated operational occurrence Surveillance Frequency Control Program Pressure Boundary Leakage Unidentified leakage
ENS 58158	9 February 2026 20:00:00	Billings Clinic	Medical Event
IR 05000338/2025004	9 February 2026	North Anna	Integrated Inspection Report 05000338/2025004 and 05000339/2025004	Mission time Reserve Station Service Transformer Functionality Assessment Aging Management Significance Determination Process Operability Determination License Renewal Fire Protection Program Hardened grease
Information Notice 2026-02, Using Generic Process Checklists in Medical Care to Prevent Human Error	6 February 2026		Using Generic Process Checklists in Medical Care to Prevent Human Error	Brachytherapy
ML26033A255	2 February 2026	99902117 05000614	Enclosure 2: PSAR Subsection 2.4.13 Accidental Releases of Liquid Effluents Into Ground and Surface Waters
ULNRC-06922, Enclosure 8: Evaluation of Changes for AST RE-Analysis for an Increase in Fuel Burnup	28 January 2026	Callaway	Enclosure 8: Evaluation of Changes for AST RE-Analysis for an Increase in Fuel Burnup	Loss of Offsite Power Deep Dose Equivalent Accident Tolerant Fuel Pre-submittal Spent fuel rack Leak-Before-Break
ML26007A265	21 January 2026	Grand Gulf Arkansas Nuclear River Bend Waterford	Issuance of Amendments Related to Revision of Technical Specifications to Use Online Monitoring Methodology	Safe Shutdown Shutdown Margin Anticipated operational occurrence Post Accident Monitoring Probabilistic Risk Assessment Surveillance Frequency Control Program Safeguards Contingency Plan
CNL-25-048, Application to Revise Technical Specification 5.5.3 Radioactive Effluent Controls Program to Support Revision of the Offsite Dose Calculation Manual That Accounts for Radionuclides Generated When Using Potassium Hydroxide	15 January 2026	Sequoyah	Application to Revise Technical Specification 5.5.3 Radioactive Effluent Controls Program to Support Revision of the Offsite Dose Calculation Manual That Accounts for Radionuclides Generated When Using Potassium Hydroxide	Offsite Dose Calculation Manual Anticipated operational occurrence Annual Radioactive Effluent Release Report Annual Radiological Environmental Operating Report License Renewal
ENS 58117	7 January 2026 06:00:00	Mercyone Des Moines	Dose to an Embryo	Reactive Inspection
ML25351A015	30 December 2025	Vogtle	Issuance of Amendment to Increase Flexibility in Mode Restraints	Grab sample Post Accident Monitoring Probabilistic Risk Assessment Significance Determination Process Power change
L-2025-190, Corrected Amendment 33 to the Updated Final Safety Analysis Report, Chapter 12, Radiation Protection	29 December 2025	Saint Lucie	Corrected Amendment 33 to the Updated Final Safety Analysis Report, Chapter 12, Radiation Protection	Boric Acid Loop seal High Radiation Area Grab sample Anticipated operational occurrence Coatings Fuel cladding Power Uprate Overexposure Spent fuel rack Spill
NL-25-0336, License Amendment Request Revise Technical Specification 3.4.10, Reactor Coolant System (RCS) Specific Activity	22 December 2025	Vogtle	License Amendment Request Revise Technical Specification 3.4.10, Reactor Coolant System (RCS) Specific Activity	Power change
ML25345A481	21 December 2025	99902049	ML25345A481-SMR (Holtec) Draft Safety Evaluation of Licensing Topical Report HI-2241098, SMR Design Basis Radiological Consequences Analysis Methodology, Revision 1
ML25339A083	8 December 2025	Vogtle	December 4, 2025, Summary of Observation Pre-Submittal Meeting Held with Southern Nuclear Operating Company, Inc., Regarding a Proposed License Amendment Request to Revise Technical Specification 3.4.10 for Vogtle Electric Generating Plant,	Pre-submittal
ML25330A089	4 December 2025	05000026 05000025	SNC Slides - Vogtle 3 and 4 - TSTF-490 LAR - Pre-Submittal Meeting - December 4 2025 (EPID L-202-LRM-0142)	Pre-submittal
ML25338A079	4 December 2025	Vogtle	SNC Slides - Vogtle 3 and 4 - TSYF-490 LAR - Pre-Submittal Meeting December 4, 2025	Pre-submittal
ML25336A066	2 December 2025	Vogtle	SNC Slides - Vogtle 3 and 4 - TSYF-490 LAR - Pre-Submittal Meeting December 4, 2025	Pre-submittal
ML25324A041	20 November 2025	Salem Hope Creek	Enclosure 3 - Salem Generating Station, Unit 1, Technical Specification Bases	Safe Shutdown Boric Acid Shutdown Margin High Radiation Area Anticipated operational occurrence Hydrostatic Nondestructive Examination Aging Management Missed surveillance Surveillance Frequency Control Program Loss of Offsite Power Fuel cladding Pressure Boundary Leakage Offsite Circuit Power change Core Exit Thermocouple Coast down Unidentified leakage Operational leakage Control Room Habitability
LR-N25-0078, Enclosure 4 - Salem Generating Station, Unit 2, Technical Specification Bases	20 November 2025	Salem Hope Creek	Enclosure 4 - Salem Generating Station, Unit 2, Technical Specification Bases	Safe Shutdown Boric Acid Shutdown Margin High Radiation Area Anticipated operational occurrence Hydrostatic Nondestructive Examination Aging Management Missed surveillance Surveillance Frequency Control Program Loss of Offsite Power Fuel cladding Pressure Boundary Leakage Offsite Circuit Power change Core Exit Thermocouple Coast down Unidentified leakage Operational leakage Control Room Habitability
ML25321A748	17 November 2025	University of Missouri-Columbia	University of Missouri, License Amendment Request to Revise the Technical Specifications for the Addition of Ancillary Exhaust Systems	License Renewal
L-2025-178, Submittal of Environmental Report in Support of Restart	10 November 2025	Duane Arnold	Submittal of Environmental Report in Support of Restart	Safe Shutdown Offsite Dose Calculation Manual Cyber Security Sewage Treatment Plant Annual Radiological Environmental Operating Report License Renewal Exemption Request Subsequent License Renewal Fire Protection Program Accident Tolerant Fuel Spill
ML25304A104	31 October 2025	Crane	Crane Clean Energy Center - Emergency Action Levels	Safe Shutdown High winds Shutdown Margin Reactor Vessel Water Level Ultimate heat sink Fire Barrier Safe Shutdown Earthquake Operating Basis Earthquake Operator Manual Action Loss of Offsite Power Safeguards Contingency Plan Earthquake Fuel cladding Pressure Boundary Leakage Core Exit Thermocouple Unidentified leakage Spill
ML25304A101	31 October 2025	Crane	Crane Clean Energy Center - Emergency Action Levels	Safe Shutdown High winds Shutdown Margin Reactor Vessel Water Level Ultimate heat sink Fire Barrier Safe Shutdown Earthquake Operating Basis Earthquake Operator Manual Action Loss of Offsite Power Safeguards Contingency Plan Earthquake Fuel cladding Pressure Boundary Leakage Core Exit Thermocouple Unidentified leakage Spill
ML25303A293	31 October 2025	Crane	Submittal of Christopher M. Crane Clean Energy Center Environmental Report	Offsite Dose Calculation Manual Coatings Arc flash FLEX Annual Radioactive Effluent Release Report Notice of Violation Sewage Treatment Plant Annual Radiological Environmental Operating Report Annual Radiological Effluent Release Report License Renewal Exemption Request Subsequent License Renewal Biofouling Spill
ML25307A050	30 October 2025	Cook	Updated Final Safety Analysis Report (Ufsar), Revision 33, Chapter 9, Tables	Boric Acid Hydrostatic
ML25307A053	30 October 2025	Cook	Updated Final Safety Analysis Report (Ufsar), Revision 33, Chapter 11, Tables	Boric Acid
ML25307A032	30 October 2025	Cook	Updated Final Safety Analysis Report (Ufsar), Revision 33, Chapter 14, Section 14.2, Tables 14.2.1-2 to 14.2.7-1 (Unit 1)
ML25307A078	30 October 2025	Cook	Updated Final Safety Analysis Report (Ufsar), Revision 33, Chapter 14, Section 14.A-G, Radiation Sources (Appendix 14A) (Unit 1)	Safe Shutdown Design basis earthquake Earthquake Fuel cladding
ML25307A011	30 October 2025	Cook	Updated Final Safety Analysis Report (Ufsar), Revision 33, Chapter 14, Section 14.3, Tables 14.3.1-1 to 14.3.9-23, 14.A.1-1 to 14.G-3 (Unit 1)	Boric Acid Loop seal Fire Barrier Coatings Spill
ML25307A024	30 October 2025	Cook	Updated Final Safety Analysis Report (Ufsar), Revision 33, Chapter 14, Section 14.2, Standby Safeguards Analysis (Unit 1)	Boric Acid Shutdown Margin Loss of Offsite Power Earthquake Fuel cladding Power Uprate Control Room Habitability Spent fuel rack
ML25307A049	30 October 2025	Cook	Updated Final Safety Analysis Report (Ufsar), Revision 33, Chapter 14, Section 14.1, Tables 14.1-1 to 14.1.13-1 (Unit 1)	Loss of Offsite Power Turbine Missile Power Uprate
RS-25-145, Radiological Emergency Plan Addendum Revision. Includes EP-AA-1003, Addendum 3, Revision 9, Emergency Action Levels for Clinton Station	23 October 2025	Clinton	Radiological Emergency Plan Addendum Revision. Includes EP-AA-1003, Addendum 3, Revision 9, Emergency Action Levels for Clinton Station	Safe Shutdown High winds Ultimate heat sink Fire Barrier Safe Shutdown Earthquake Internal Flooding Operating Basis Earthquake Operator Manual Action Nuclear Accident Reporting System Loss of Offsite Power Safeguards Contingency Plan Earthquake Fuel cladding Pressure Boundary Leakage Power change Unidentified leakage GNF3 Spill
ML25288A018	15 October 2025	Crystal River	Enclosure 11 - ADP CR3, LLC, History of Settling Pond Activity Levels and Work Activity, May 20, 2025	Sewage Treatment Plant
ML25290A083	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 11, Section 11.2, Liquid Waste Management Systems	Grab sample Anticipated operational occurrence Spill
ML25290A017	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 2, Section 2.4, Hydrologic Engineering	Safe Shutdown Ultimate heat sink Hydrostatic Operating Basis Earthquake Design basis earthquake Earthquake Power Uprate
ML25290A081	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 11, Section 11.4, Solid Waste Management System	Process Control Program Spent fuel rack
ML25290A113	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 15, Appendix 15b, Accident Dose Model Descriptions	Deep Dose Equivalent Unidentified leakage Control Room Habitability
ML25290A102	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 15, Section 15.1, Decrease in Reactor Coolant Temperature	Stroke time Anticipated operational occurrence Feedwater Heater Feedwater Controller Failure Power Uprate
ML25290A101	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 15, Section 15.6, Decrease in Reactor Coolant Inventory	Safe Shutdown Safe Shutdown Earthquake Feedwater Heater Loss of Offsite Power Excess Flow Check Valve Earthquake Power Uprate
ML25290A108	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 15, Appendix 15e, Initial Core for SSES, Units 1 and 2, Non-Limiting Events	Feedwater Heater Feedwater Controller Failure Loss of condenser vacuum
ML25290A044	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 5, Section 5.2, Integrity of Reactor Coolant Pressure Boundary	Reactor Vessel Water Level Grab sample Stroke time Weld Overlay Hydrostatic Nondestructive Examination Incorporated by reference High Energy Line Break Abnormal operational transient Feedwater Heater Stress corrosion cracking Power-Operated Valves Pressure Boundary Leakage Unidentified leakage Unidentified leak Power Uprate Subsequent actuation
ML25290A100	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 15, Section 15.7, Radioactive Release from Subsystems and Components	Earthquake Control Room Habitability Spill
ML25290A105	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 15, Section 15.4, Reactivity and Power Distributions Anomalies	Shutdown Margin Main Steam Line Radiation Monitor Rod Drop Event Power Uprate
ML25290A119	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 18, Section 18.1, Response to Requirements in NUREG-0737	Reactor Vessel Water Level Grab sample Anticipated operational occurrence Scram Discharge Volume Shift Technical Advisor Loss of Offsite Power Excess Flow Check Valve Earthquake Fuel cladding Thermal fatigue Potassium iodide Control Room Habitability
ML25290A080	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 11, Section 11.3, Gaseous Waste Management Systems	Grab sample Anticipated operational occurrence Safe Shutdown Earthquake Earthquake Fuel cladding
ML25290A087	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 12, Section 12.2, Radiation Sources	Feedwater Heater Process Control Program Power Uprate
ML25290A079	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 11, Section 11.5, Process and Effluent Radiolgocial Monitoring and Sampling Systems	Grab sample Anticipated operational occurrence Control Room Habitability
ML25290A073	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 9, Appendix 9A, Analysis for Non Seismic Spent Fuel Pool Cooling Systems	Control Room Habitability Full Core Offload
ML25290A078	13 October 2025	Susquehanna	Updated Final Safety Analysis Report, Rev. 72, Chapter 11, Section 11.1, Source Terms	Stress corrosion cracking Fuel cladding Power Uprate Spill
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