Xe-133

Isotope Xe - 133

	Start date	Site	Title	Topic
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
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
ML25328A120	9 December 2025	Watts Bar Sequoyah	Issuance of Amendment Nos. 373, 368; 177, and 82 Regarding Use of Online Monitoring Methodology	Safe Shutdown Shutdown Margin Anticipated operational occurrence Post Accident Monitoring Hydrostatic Cyber Security Surveillance Frequency Control Program Safeguards Contingency Plan Pressure Boundary Leakage Fire Protection Program Unidentified leakage Pressure Temperature Limits Report
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
ML25338A079	4 December 2025	Vogtle	SNC Slides - Vogtle 3 and 4 - TSYF-490 LAR - Pre-Submittal Meeting December 4, 2025	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
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
PMNS20251170, Pre-Submittal Meeting - Vogtle, Units 3 and 4 - Proposed LAR to Revise Technical Specification (TS) 3.4.10, Reactor Coolant System (RCS) Specific Activity for Xe-133 Out of Limits - Completion Time Extension (TSTF-490)	17 November 2025	Vogtle	Pre-Submittal Meeting - Vogtle, Units 3 and 4 - Proposed LAR to Revise Technical Specification (TS) 3.4.10, Reactor Coolant System (RCS) Specific Activity for Xe-133 Out of Limits - Completion Time Extension (TSTF-490)	Pre-submittal
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
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
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
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)
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
L-2025-170, Fleet License Amendment Request 25-01, Adopt Topical Report AMS-TR-0720R2-A. Online Monitoring Program	29 October 2025	Saint Lucie Point Beach Seabrook Turkey Point	Fleet License Amendment Request 25-01, Adopt Topical Report AMS-TR-0720R2-A. Online Monitoring Program	Safe Shutdown Shutdown Margin Packing leak Anticipated operational occurrence Post Accident Monitoring Surveillance Frequency Control Program Process Control Program Pressure Boundary Leakage Core Exit Thermocouple Unidentified leakage Power Uprate High range area radiation monitor
ML25283A007	9 October 2025	Point Beach	Periodic Update of the Updated Final Safety Analysis Report, Chapter 9, Auxiliary and Emergency Systems (Redacted)	Safe Shutdown Boric Acid Shutdown Margin Loop seal Offsite Dose Calculation Manual Tornado Missile Hydrostatic Probabilistic Risk Assessment Zebra Mussel High Energy Line Break Surveillance Frequency Control Program Design basis earthquake Loss of Offsite Power License Renewal Earthquake Control of Heavy Loads Turbine Missile Fuel cladding Fire Protection Program Power change GOTHIC Power Uprate Overspeed Potassium iodide Spent fuel rack Gas accumulation Operational convenience Leak-Before-Break Pressure locking
ML25283A010	9 October 2025	Point Beach	Periodic Update of the Updated Final Safety Analysis Report, Chapter 11, Waste Disposal Systems and Radiation Protection	Boric Acid High Radiation Area Grab sample Offsite Dose Calculation Manual Locked High Radiation Area Fuel cladding Mururoa Power Uprate Control Room Habitability Unplanned intake Spill
ML25279A129	6 October 2025	Turkey Point	Updated Final Safety Analysis Report, Chapter 14, Appendices 14A-14G	Shutdown Margin
ML25279A109	6 October 2025	Turkey Point	Updated Final Safety Analysis Report, Chapter 6, Engineered Safety Features	Boric Acid Stroke time Hydrostatic High Energy Line Break Local Leak Rate Testing Stress corrosion cracking Integrated leak rate test Earthquake Power Operated Valves Fuel cladding Liquid penetrant GOTHIC Power Uprate Eddy Current Test Thermography Gas accumulation Leak Before Break Seal weld Spill Pressure locking Thermal binding
ML25279A114	6 October 2025	Turkey Point	Updated Final Safety Analysis Report, Chapter 11, Waste Disposal and Radiation Protection System	High Radiation Area Grab sample Offsite Dose Calculation Manual Anticipated operational occurrence Post Accident Monitoring Probabilistic Risk Assessment Feedwater Heater Containment high range radiation monitor Fuel cladding Power Uprate Overexposure Control Room Habitability
L-2025-142, Technical Requirements Manual (Trm), Revision 1	6 October 2025	Turkey Point	Technical Requirements Manual (Trm), Revision 1	Safe Shutdown Boric Acid Shutdown Margin Grab sample Post Accident Monitoring Incorporated by reference Loss of Offsite Power Commercial Grade Recently irradiated fuel Power change Core Exit Thermocouple Metamic
Regulatory Guide 1.21	30 September 2021		Measuring, Evaluating, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste	Grab sample Offsite Dose Calculation Manual Anticipated operational occurrence Annual Radioactive Effluent Release Report Annual Radiological Environmental Operating Report Process Control Program Chernobyl Diurnal Spill
ML21197A156	16 July 2021		Rev.3 - ACRS pre-decisional Version	Grab sample Offsite Dose Calculation Manual Anticipated operational occurrence Annual Radioactive Effluent Release Report Annual Radiological Environmental Operating Report Process Control Program Chernobyl Diurnal Spill
ML20287A423	31 January 2021		Draft Regulatory Guide DG-1377, Measuring, Evaluating, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste	Grab sample Offsite Dose Calculation Manual Anticipated operational occurrence Annual Radioactive Effluent Release Report Annual Radiological Environmental Operating Report Process Control Program Chernobyl Diurnal Spill
ENS 53051	3 November 2017 14:45:00	Davis Besse	Station Vent Radiation Monitor Efficiency Factor Non-Conservative	Time of Discovery Grab sample
ENS 49081	30 April 2013 04:00:00	Lantheus Medical Imaging Inc	Agreement State Report - Xenon Vials Lost During Transport	Moisture Density Gauge Stolen
ML12100A129	5 April 2012	Plum Brook	Plum Brook Reactor Facility - Final Status Survey Report Attachment 8 Revision 1, Hot Laboratory (Building 1112)	Safe Shutdown
ML11203A361	18 July 2011	Plum Brook	Plum Brook Reactor Facility Final Status Survey Report, Attachment 8, Rev. 0, Cover Through Appendix a, Rev. 0	Safe Shutdown
ML080660617	1 October 2008		Draft Regulatory Guide DG-1186 (Proposed Revision 2 of Regulatory Guide 1.21) Measuring, Evaluating, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste	Grab sample Offsite Dose Calculation Manual Annual Radioactive Effluent Release Report Annual Radiological Environmental Operating Report Process Control Program Backfit Spill
ENS 42855	22 September 2006 05:00:00	Cardinal Health Nuclear Pharmacy	Agreement State Report
ENS 41658	29 April 2005 04:00:00	Department Of Veteran Affairs	Shipment Received with External Removable Contamination	Exclusive Use
ENS 41124	1 October 2004 05:00:00	Tulane University	Agreement State - Medical Event
ENS 40395	15 December 2003 08:00:00	Ge Company Vallecitos Nuclear Center	Xe-133 Source Lost During Shipment

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