Cs-137

Isotope Cesium - 137

	Start date	Site	Title	Topic
ENS 58153	4 February 2026 05:00:00		Surrender of Unlicensed Device	Troxler
ML26033A255	2 February 2026	99902117 05000614	Enclosure 2: PSAR Subsection 2.4.13 Accidental Releases of Liquid Effluents Into Ground and Surface Waters
ML26033A032	2 February 2026	Fort Calhoun	FCS Response to Audit Request Q-2-A
ML26033A033	2 February 2026	Fort Calhoun	FCS Response to Audit Request Q-6
ENS 58143	31 January 2026 05:00:00	Halley Engineering Contractors, Inc	Stolen Moisture Density Gauge	Moisture Density Gauge Stolen
ENS 58140	30 January 2026 23:41:00	Bsk Associates	Damaged Moisture Density Gauge	Moisture Density Gauge
ML26021A159	30 January 2026	Crystal River	Unit 3 License Termination Plan Request for Supplemental Information	Pre-submittal Spill
ML26030A059	30 January 2026	Oyster Creek	OCNGS LTP LAR Audit Question Responses 9-8-2025	Spill
ML26030A060	30 January 2026	Oyster Creek	OCNGS LTP Additional Audit Question 10-6-2025	Spill
ENS 58137	29 January 2026 07:00:00	American Crystal Sugar Company	Gauge Shutter Inoperable	Overexposure
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
CNL-25-048, Units 1 and 2, 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	Units 1 and 2, 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
ML25363A185	14 January 2026	07003103	Enclosure 2 - LES Amendment 112 - LAR 25-02 June 2025 ISA Methodology (Public)	Decommissioning Funding Plan Exemption Request Commercial Grade Depleted uranium Basic Component
ENS 58116	13 January 2026 22:30:00	Geocon, Inc.	Damaged Gauge	Troxler
ML26014A231	9 January 2026	11006617	Letter to the Eb Requesting Eb Views for XB1369-01	Moisture Density Gauge Troxler
ENS 58111	6 January 2026 19:00:00	Chalmette Refining, Llc	Stuck Shutter	Stuck Shutter
ENS 53441	5 January 2026 19:51:00	Calcasieu Refining Co.	Agreement State Report - Exposure to Members of the Public
ENS 53436	5 January 2026 19:37:00	Universal Pressure Pumping, Inc.	Agreement State Report - In-Line Density Gauge Stuck Shutter	Stuck Shutter Overexposure Reactive Inspection
ENS 53446	5 January 2026 18:49:00	Cti And Associates	Damaged Moisture Density Gauge	Moisture Density Gauge Overexposure
ENS 53440	5 January 2026 18:48:00	Geotechnical Consultants, Inc.	Agreement State Report - Stolen and Recovered Density Gauge	Moisture Density Gauge Stolen
ENS 58105	31 December 2025 05:00:00	New Indy Catawba	STUCK-OPEN Gauge Shutter	Overexposure
L-2025-190, Unit 1, Corrected Amendment 33 to the Updated Final Safety Analysis Report, Chapter 12, Radiation Protection	29 December 2025	Saint Lucie	Unit 1, 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
ENS 58098	22 December 2025 08:00:00	Alta Ca Geotechnical Inc.	Stolen Moisture Density Gauge	Moisture Density Gauge Stolen
ML25345A229	22 December 2025	River Bend	Integrated Inspection Report 050000458/2025003	Fitness for Duty Ultimate heat sink Enforcement Discretion Probabilistic Risk Assessment Temporary Modification Functionality Assessment FLEX B.5.b Significance Determination Process Annual Radioactive Effluent Release Report Notice of Violation Process Control Program Large early release frequency Operability Determination Maintenance Rule Program Very Low Safety Significance Issue Resolution Pressure Boundary Leakage Fire Protection Program Substantial potential for an overexposure Overexposure Control Room Habitability
ML26014A182	22 December 2025	07000113	Enclosure 5 - Decommissioning Cost Estimate for License SNM-95 (Redacted)	License Renewal
IR 05000458/2025003	22 December 2025	River Bend	Integrated Inspection Report 050000458/2025003	Fitness for Duty Ultimate heat sink Enforcement Discretion Probabilistic Risk Assessment Temporary Modification Functionality Assessment FLEX B.5.b Significance Determination Process Annual Radioactive Effluent Release Report Notice of Violation Process Control Program Large early release frequency Operability Determination Maintenance Rule Program Very Low Safety Significance Issue Resolution Pressure Boundary Leakage Fire Protection Program Substantial potential for an overexposure Overexposure Control Room Habitability
ML25241A169	18 December 2025	Crystal River	Partial Site Release SER	Offsite Dose Calculation Manual Annual Radioactive Effluent Release Report Sewage Treatment Plant Annual Radiological Environmental Operating Report Process Control Program Spill
ML25349A162	15 December 2025	Saint Lucie	EIS for License Renewal of Nuclear Plants, Supplement 11, 2nd Renewal Re Subsequent License Renewal St. Lucie Plant, Units 1, 2, Draft Report for Comment	Incorporated by reference FLEX Annual Radioactive Effluent Release Report Annual Radiological Environmental Operating Report Annual Radiological Effluent Release Report License Renewal Subsequent License Renewal Subsequent License Renewal Application Biofouling Environmental Justice Power Uprate Spill
ML25351A093	15 December 2025	NS Savannah	Us Dept of Transportation, Maritime Admin., Final Status Survey Report 1 of 5, Revision 1
ML25345A140	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 25-090, Rev. 0, Soil Dcgl Values Assuming the Residential Scenario with Drinking Water
ML25345A118	11 December 2025	Oyster Creek	Nuclear Generating Station, Calculation ENG-OCS-013, Rev. 1, Basement Fill Model: Calculation of Dcgl W/F Values Assuming Industrial Use of Scenario Exposure Pathways
ML25345A133	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 24-081, Rev. 2, Groundwater Dose Calculation Methodology to Support the License Termination Plan
ML25345A124	11 December 2025	Oyster Creek	Nuclear Generating Station, Calculation ENG-OCS-015, Rev. 1, Basement Fill Model: Calculation of Embedded Pipe Dcgl Values
ML25345A143	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 25-093, Rev. 0, Bfm Dcglep Values Assuming the Residential Scenario Without Drinking Water
ML25345A127	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 24-108, Rev. 1, Instrument Efficiency Determination for Use in Min. Detectable Concentration Calculations for Final Status Surveys at OCNGS	Coatings
ML25345A113	11 December 2025	Oyster Creek	Nuclear Generating Station, Calculation ENG-OCS-006, Rev. 1, Area Factors for Use with Oyster Creek Dcgl Values for Buildings/Structures
ML25345A114	11 December 2025	Oyster Creek	Nuclear Generating Station, Calculation ENG-OCS-007, Rev. 0, RESRAD-Onsite Probabilistic Analysis - Industrial Use Scenario
ML25345A142	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 25-092, Rev. 0, Bfm Dcgl W/F Values Assuming the Residential Scenario with a Drinking Water Pathway
ML25345A115	11 December 2025	Oyster Creek	Nuclear Generating Station, Calculation ENG-OCS-008, Rev. 0, Derived Concentration Guideline Levels Values for Soil - Industrial Use Scenario
ML25345A137	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 24-111, Rev. 0, Surface/Sub Surface Characterization Survey Plan	Spill
ML25345A129	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 24-055, Rev. 0, Basement Fill Model: Probabilistic Analyses for the Instantaneous Release Scenario Assuming Industrial Use Exposure Pathways
ML25345A117	11 December 2025	Oyster Creek	Nuclear Generating Station, Calculation ENG-OCS-012, Rev. 0, Basement Fill Model: Probabilistic Analysis for Instantaneous Release Scenario Assuming Industrial Use Exposure Pathways
ML25345A136	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 24-103 Rev. 0, Distribution Coefficient (Kd) of Radionuclides in Soil Samples
ML25345A116	11 December 2025	Oyster Creek	Nuclear Generating Station, Calculation ENG-OCS-009, Rev. 0, Area Factors for Soil - Industrial Use Scenario
ML25345A139	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 25-089, Rev. 0, Soil Dcgl Values Assuming the Residential Scenario Without Drinking Water
ML25345A141	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 25-091, Rev. 0, Bfm Dcgl W/F Values Assuming the Residential Scenario Without Drinking Water
ML25345A119	11 December 2025	Oyster Creek	Nuclear Generating Station, Calculation ENG-OCS-014, Rev. 0, Basement Fill Model: Probabilistic Analysis for Embedded Pipes Scenario
ML25345A144	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 25-096, Rev. 0, Bfm Dcglep Values Assuming the Residential Scenario with Drinking Water
ML25345A132	11 December 2025	Oyster Creek	Nuclear Generating Station, Technical Support Document No. 24-062, Rev. 1, Method for Determining Nuclide Fractions and Gross Activity Dcgls
ML25345A098	11 December 2025	Oyster Creek	Nuclear Generating Station, Site Radiological Characterization, Revision 1	Grab sample Spill
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