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| {{#Wiki_filter:San OnofreSpecial Inspection WebinarNovember 8, 2018NRC Region IV, Arlington, TX | | {{#Wiki_filter:~us.NRC United States Nuclear Regulatory Commission Protecting People and the Environnient San Onofre Special Inspection Webinar November 8, 2018 NRC Region IV, Arlington, TX |
| ~us.NRC United States Nuclear Regulatory Commission Protecting People and the Environnient LogisticsWebinar FormatBack-up Bridge Line(888) 469-1677, Passcode 2471451Questions and Answers 2 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment NRC StaffEric Simpson, Special Inspection Team LeaderRegion IV Fuel Cycle and Decommissioning BranchPatricia Silva, Branch ChiefDivision of Spent Fuel ManagementTroy Pruett, DirectorRegion IV Division of Nuclear Materials Safety 3 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment Webinar AgendaBackgroundCanister Downloading OperationsInspection Team FindingsCurrent StatusSummaryQuestions & Answers 4 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment ISFSI Layout5TN NUHOMSDesignHoltecUMAXDesign TransnuclearNUHOMS6 Holtec UMAX7 Vertically Ventilated Module (Vault)8 Spent Fuel Canister 9Holtec MPCTransfer Cask Downloading: Shield Cone10 Downloading: Transporter11 Downloading: Vault Door12 Downloading: Alignment13 Downloading: Attaching Slings14 Downloading: Attaching Slings15 Downloading Preparations16 17What Happened on August 3rd?Low Dose AreaLow Dose Area What Happened on August 3rd?18 What Happened on August 3rd?19 What Happened on August 3rd?20 21What Happened on August 3rd?
| | |
| Post Event ActionsSpent Fuel Handling Activities SuspendedNRC Inspection ActivitiesSan Onofre Notification to NRCCausal EvaluationsCorrective Actions 22 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment Spent Fuel Handling Activities Suspended 23MPC 29 lowered into vaultSan Onofre suspends fuel loadingMPC 30 Inside Transfer CaskSeismically Restrained in Fuel Building US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment NRC Inspection Activities 24August 6 th: NRC Region IV informally notified of Misalignment Event and initiates daily oversight communicationsAugust 7 th: San Onofrecommits to NRC review before resuming operationsAugust 17 th: NRC decides to conduct Special InspectionSeptember 10 | | US.NRC Logistics United States Nuclear Regulatory Commission Protecting People and the Environment |
| -14: NRC Special Inspection Team onsiteNRC to perform inspection prior to resumption of fuel loading US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment NRC Inspection Activities 252 Preliminary Escalated Findings Failure to provide redundant drop protectionFailure to report 3 Preliminary Severity Level IV ViolationsProceduresCorrective actionsTrainingManagement Oversight Weaknesses US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment Causal Evaluations 26San OnofreApparent Cause EvaluationHoltec Root Cause AnalysisCommon Cause Evaluation US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment Root CausesSan Onofre Management failed to provideAdequate procedures Adequate training to support procedureAdequate oversight 27 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment Corrective ActionsTraining RequirementsProcedure EnhancementsEquipment EnhancementsOversight Improvements 28 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment Event SignificanceNo Actual Drop of CanisterNo Radiological ReleaseLoad Drop Analysis (if canister fell) 29 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment Next StepsIssue NRC Inspection ReportNRC Inspection of Causal AnalysesNRC Inspection of Corrective Actions 30 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment SummaryCould have been preventedWeaknesses in management oversightMultiple failed barriersIncreased NRC oversight 31 US.NRC United States Nuclear Regulatory Commission Protecting People and the Environment Questions32}} | | * Webinar Format |
| | * Back-up Bridge Line (888) 469-1677, Passcode 2471451 |
| | * Questions and Answers 2 |
| | |
| | US.NRC NRC Staff United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * Eric Simpson, Special Inspection Team Leader Region IV Fuel Cycle and Decommissioning Branch |
| | * Patricia Silva, Branch Chief Division of Spent Fuel Management |
| | * Troy Pruett, Director Region IV Division of Nuclear Materials Safety 3 |
| | |
| | US.NRC Webinar Agenda United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * Background |
| | * Canister Downloading Operations |
| | * Inspection Team Findings |
| | * Current Status |
| | * Summary |
| | * Questions & Answers 4 |
| | |
| | ISFSI Layout TN NUHOMS Design Holtec UMAX Design 5 |
| | |
| | Transnuclear NUHOMS 6 |
| | |
| | Holtec UMAX 7 |
| | |
| | Vertically Ventilated Module (Vault) 8 |
| | |
| | Spent Fuel Canister Holtec MPC Transfer Cask 9 |
| | |
| | Downloading: Shield Cone 10 |
| | |
| | Downloading: Transporter 11 |
| | |
| | Downloading: Vault Door 12 |
| | |
| | Downloading: |
| | Alignment 13 |
| | |
| | Downloading: |
| | Attaching Slings 14 |
| | |
| | Downloading: |
| | Attaching Slings 15 |
| | |
| | Downloading Preparations 16 |
| | |
| | What Happened on August 3rd? |
| | Low Dose Area Low Dose Area 17 |
| | |
| | What Happened on August 3rd? |
| | 18 |
| | |
| | What Happened on August 3rd? |
| | 19 |
| | |
| | What Happened on August 3rd? |
| | 20 |
| | |
| | What Happened on August 3rd? |
| | 21 |
| | |
| | US.NRC Post Event Actions United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * Spent Fuel Handling Activities Suspended |
| | * NRC Inspection Activities |
| | * San Onofre Notification to NRC |
| | * Causal Evaluations |
| | * Corrective Actions 22 |
| | |
| | US.NRC Spent Fuel Handling Activities Suspended United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * MPC 29 lowered into vault |
| | * San Onofre suspends fuel loading |
| | * MPC 30 |
| | - Inside Transfer Cask |
| | - Seismically Restrained in Fuel Building 23 |
| | |
| | US.NRC NRC Inspection Activities United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * August 6th: NRC Region IV informally notified of Misalignment Event and initiates daily oversight communications |
| | * August 7th: San Onofre commits to NRC review before resuming operations |
| | * August 17th: NRC decides to conduct Special Inspection |
| | * September 10-14: NRC Special Inspection Team onsite |
| | * NRC to perform inspection prior to resumption of fuel loading 24 |
| | |
| | US.NRC NRC Inspection Activities United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * 2 Preliminary Escalated Findings |
| | - Failure to provide redundant drop protection |
| | - Failure to report |
| | * 3 Preliminary Severity Level IV Violations |
| | - Procedures |
| | - Corrective actions |
| | - Training |
| | * Management Oversight Weaknesses 25 |
| | |
| | US.NRC Causal Evaluations United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * San Onofre Apparent Cause Evaluation |
| | * Holtec Root Cause Analysis |
| | * Common Cause Evaluation 26 |
| | |
| | US.NRC Root Causes United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * San Onofre Management failed to provide |
| | - Adequate procedures |
| | - Adequate training to support procedure |
| | - Adequate oversight 27 |
| | |
| | US.NRC Corrective Actions United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * Training Requirements |
| | * Procedure Enhancements |
| | * Equipment Enhancements |
| | * Oversight Improvements 28 |
| | |
| | US.NRC Event Significance United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * No Actual Drop of Canister |
| | * No Radiological Release |
| | * Load Drop Analysis (if canister fell) 29 |
| | |
| | US.NRC Next Steps United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * Issue NRC Inspection Report |
| | * NRC Inspection of Causal Analyses |
| | * NRC Inspection of Corrective Actions 30 |
| | |
| | US.NRC Summary United States Nuclear Regulatory Commission Protecting People and the Environment |
| | * Could have been prevented |
| | * Weaknesses in management oversight |
| | * Multiple failed barriers |
| | * Increased NRC oversight 31 |
| | |
| | Questions 32}} |
Presentation for San Onofre Special Inspection Webinar November 8, 2018ML18312A118 |
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San Onofre ![Southern California Edison icon.png](/w/images/2/2a/Southern_California_Edison_icon.png) |
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11/08/2018 |
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NRC Region 4 |
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References |
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Download: ML18312A118 (32) |
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Category:Meeting Briefing Package/Handouts
MONTHYEARML21053A4412021-02-23023 February 2021 NRC Staff Slides: Feb 23, 2021 Pre-submission Meeting for San Onofre Nuclear Generating Station (SONGS) ML21042A0772021-02-11011 February 2021 Public-Watchdogs-Langley-Final-02-11-2021 ML20149K4992020-07-0101 July 2020 California Coastal Commission July 2020 Meeting on San Onofre Nuclear Generating Station Independent Spent Fuel Storage Installation Inspection and Maintenance Program ML20178A2482020-06-24024 June 2020 Public Watchdogs 10 CFR 2.206 Petition - E-mail from Public Watchdogs with Presentations for June 24th Public Meeting with the NRC ML20178A2492020-06-24024 June 2020 Public Watchdogs - 10 CFR 2.206 Meeting with NRC - Petition Review Board, June 23, 2020 ML19234A0082019-08-20020 August 2019 Southern California Edison Company, San Onofre Nuclear Generating Station, August 20 2019 NRC Town Hall Meeting Sjc ML19154A1372019-06-0303 June 2019 June 3, 2019, Webinar Slides ML19084A1342019-03-25025 March 2019 NRC Slides for March 25 2019 Public Webinar ML19029B5092019-01-24024 January 2019 Final NRC Presentation for SCE Enforcement Conference ML18353A7492018-12-12012 December 2018 Presentation Slides: NRC SONGS Presentation December 2018, Victor ML18340A1762018-11-29029 November 2018 Southern California Edison Company; San Onofre Nuclear Generating Station; SONGS Community Engagement Panel, November 29, 2018 ML18318A0642018-11-0808 November 2018 Public Meeting Slides with Extra Content ML18312A1182018-11-0808 November 2018 Presentation for San Onofre Special Inspection Webinar November 8, 2018 ML17088A6572017-03-28028 March 2017 2017 RIC Presentation from Yamir Diaz-Castillo Entitled, Current NRC Vendor Findings and the Results from the 1st SONGS Lessons Learned Inspection. ML14216A4512015-02-0909 February 2015 7/31/14 Summary of Closed Meeting with Southern California Edison to Discuss Scope and Schedule Related to Cyber Security License Amendment Request for San Onofre Nuclear Generating Station, Units 2 and 3 ML14303A6392014-10-27027 October 2014 NRC Slides - SONGS PSDAR Public Meeting October 27, 2014 ML14303A6242014-10-27027 October 2014 Licensee'S Slides - SONGS PSDAR Public Meeting October 27, 2014 ML14272A4152014-09-25025 September 2014 SONGS EP RAI Response Review Slides - Public Meeting September 25, 2014 ML14272A4652014-09-24024 September 2014 SONGS Public Meeting Slides (Non-Public Portion) - Public Meeting September 24, 2014 ML14239A4642014-08-28028 August 2014 August 28, 2014, Public Meeting Slides Concerning San Onofre Nuclear Generating Station (SONGS) Decommisioning Quality Assurance Program ML14199A0982014-07-17017 July 2014 SONGS Cep Meeting Slides- Reactor Decommissioning Process ML13268A0032013-09-25025 September 2013 Reactor Decommissioning Process- Presentation for San Onofre 2&3 PSDAR Public Meeting ML13092A2882013-04-0202 April 2013 Licensee Slides for 4/3/13 Pre-Submittal Meeting to Discuss License Amendment Request ML13059A1572013-02-27027 February 2013 Licensee Slides from 2/27/13 Meeting Regarding a Request for Additional Information ML13059A1522013-02-27027 February 2013 NRC Meeting Slides from 2/27/13 Public RAI Meeting ML13016A0922013-01-16016 January 2013 G20120891, Friends of the Earth Presentation for 1/16/13 Meeting with to Provide an Opportunity to Address the NRC PRB, Pursuant to 10 CFR 2.206. ML13016A0862013-01-16016 January 2013 Fairwinds Presentation for 1/16/13 Meeting with Friends of the Earth to Provide an Opportunity to Address the NRC PRB, Pursuant to 10 CFR 2.206 (TAC Nos. MF0060 & MF0060) ML12352A4112012-12-18018 December 2012 NRC Slides for 12/18/12 Meeting with Southern California Edison ML12352A3852012-12-18018 December 2012 Licensee Slides for 12/18/12 Public Meeting ML12346A1162012-12-10010 December 2012 Meeting Summary for November 30, 2012, Meeting with Southern California Edison Company ML12311A0492012-09-18018 September 2012 Part 26 Public Meeting NEI Presentation Slides ML12157A2722012-06-11011 June 2012 5/31/2012 Summary of Telephone Conference with Licensees Regarding Near Term Task Force Recommendation 2.1 Seismic Reevaluations - Diablo Canyon, 1 and 2, San Onofre, Units 2 and 3, Columbia Generating Station, and Palo Verde, Units 1, 2, a ML1115304302011-06-0101 June 2011 Meeting Summary for Public Meeting with Southern California Edison to Present & Discuss the Performance Results for San Onofre Nuclear Generating Station Units 2 & 3 for Period of January 1 Through December 31, 2010 ML1101206302011-01-12012 January 2011 License Amendment Request to Support Use of Areva Nuclear Fuel, Slides from 1/12/2011 Meeting ML1027304522010-09-30030 September 2010 Meeting Summary for 09/16/2010 Public Meeting with Southern California Edison ML0932402122009-11-20020 November 2009 Summary of Public Meeting with Southern California Edison Company on San Onofre Nuclear Generating Station 2009 Performance ML0926502992009-09-22022 September 2009 Summary of Public Meeting with Southern California Edison Regarding Site Improvement Initiatives ML0914905092009-05-28028 May 2009 Summary of Meeting with Southern California Edison Company Several Initiatives That Were Being Implemented to Improve Licensed Operator Training at San Onofre Nuclear Generating Station ML0832408342008-10-30030 October 2008 Licensee Handout for 10-31-08 Call ML0819303742008-06-11011 June 2008 Attachment 2: Presentation Slides by James Shepherd, NRC from June 11, 2008 Public Meeting with SONGS ML0819305432008-06-11011 June 2008 Attachment 3: Presentation Slides, Emilio Garcia, NRC from June 11, 2008 Public Meeting with SONGS ML0819305802008-06-11011 June 2008 Attachment 4: Presentation Slides, James Reilly, SONGS from June 11, 2008 Public Meeting with SONGS ML0729806642007-10-24024 October 2007 Meeting Presentation on Update on Generic Safety Issue 191 Plant Audits ML0727500132007-09-25025 September 2007 9/25/2007 Licensee Handouts for Meeting Re San Onofre Nuclear Generating Station, Unit 3 - Reclassification of Control Rod Drive Mechanism 56 NDE (Non Destructive Examination) Indication ML0720703362007-07-20020 July 2007 Summary of San Onofre Nuclear Generating Station End-Of-Cycle Public Meeting ML0634600722006-11-17017 November 2006 Licensee Information in Support of 11/17/2006 Discussions Steam Generator Tube Inspections - Refueling Outage 14 ML0613604892006-05-0303 May 2006 Meeting Slides, Southern California Edison for San Onofre Nuclear Generating Station (Enclosure 2) M060502, M060502-Briefing on Status of Emergency Planning Activities (Slides)2006-05-0202 May 2006 M060502-Briefing on Status of Emergency Planning Activities (Slides) ML0609601982006-01-23023 January 2006 SONGS 2, Handouts, Information Supplied by SCE in Support of Discussion ML0712401852005-12-31031 December 2005 Reactor Decommissioning Program Lessons-Learned 2021-02-23
[Table view] Category:Slides and Viewgraphs
MONTHYEARML21053A2382021-02-22022 February 2021 Southern California Edison Slides for Feb 23, 2021, Pre-submission Meeting for SONGS Proposed Exemption- 10 CFR 72.106b ML21042A0772021-02-11011 February 2021 Public-Watchdogs-Langley-Final-02-11-2021 ML20178A2482020-06-24024 June 2020 Public Watchdogs 10 CFR 2.206 Petition - E-mail from Public Watchdogs with Presentations for June 24th Public Meeting with the NRC ML20178A2492020-06-24024 June 2020 Public Watchdogs - 10 CFR 2.206 Meeting with NRC - Petition Review Board, June 23, 2020 ML19255F6182019-09-17017 September 2019 Presentation Slides: SONGS Recent Dry Storage Operating Experience ML19235A1892019-08-29029 August 2019 Final NEIMA Meeting Slides - SONGS Presentation ML19234A0082019-08-20020 August 2019 Southern California Edison Company, San Onofre Nuclear Generating Station, August 20 2019 NRC Town Hall Meeting Sjc ML19154A1372019-06-0303 June 2019 June 3, 2019, Webinar Slides ML19084A1342019-03-25025 March 2019 NRC Slides for March 25 2019 Public Webinar ML19029B5092019-01-24024 January 2019 Final NRC Presentation for SCE Enforcement Conference ML19023A0332019-01-24024 January 2019 Southern California Edison Company; San Onofre Nuclear Generating Station, Pre-Decisional Enforcement Conference Slides ML19023A2492019-01-23023 January 2019 NRC Slides for Southern California Edison Conference January 24, 2019 ML18353A7492018-12-12012 December 2018 Presentation Slides: NRC SONGS Presentation December 2018, Victor ML18340A1762018-11-29029 November 2018 Southern California Edison Company; San Onofre Nuclear Generating Station; SONGS Community Engagement Panel, November 29, 2018 ML18318A0642018-11-0808 November 2018 Public Meeting Slides with Extra Content ML18312A1182018-11-0808 November 2018 Presentation for San Onofre Special Inspection Webinar November 8, 2018 ML17088A6572017-03-28028 March 2017 2017 RIC Presentation from Yamir Diaz-Castillo Entitled, Current NRC Vendor Findings and the Results from the 1st SONGS Lessons Learned Inspection. ML14216A4512015-02-0909 February 2015 7/31/14 Summary of Closed Meeting with Southern California Edison to Discuss Scope and Schedule Related to Cyber Security License Amendment Request for San Onofre Nuclear Generating Station, Units 2 and 3 ML14303A6392014-10-27027 October 2014 NRC Slides - SONGS PSDAR Public Meeting October 27, 2014 ML14303A6242014-10-27027 October 2014 Licensee'S Slides - SONGS PSDAR Public Meeting October 27, 2014 ML14272A4152014-09-25025 September 2014 SONGS EP RAI Response Review Slides - Public Meeting September 25, 2014 ML14272A4652014-09-24024 September 2014 SONGS Public Meeting Slides (Non-Public Portion) - Public Meeting September 24, 2014 ML14239A4642014-08-28028 August 2014 August 28, 2014, Public Meeting Slides Concerning San Onofre Nuclear Generating Station (SONGS) Decommisioning Quality Assurance Program ML14199A0982014-07-17017 July 2014 SONGS Cep Meeting Slides- Reactor Decommissioning Process ML13268A0032013-09-25025 September 2013 Reactor Decommissioning Process- Presentation for San Onofre 2&3 PSDAR Public Meeting ML13227A1102013-08-13013 August 2013 8/13/13 Michael F. Weber, Deputy Executive Director for Materials, Waste, Research, State, Tribal, and Compliance Programs Testimony on: the U.S. Nrc'S Power Reactor Decommissioning Process ML13092A2882013-04-0202 April 2013 Licensee Slides for 4/3/13 Pre-Submittal Meeting to Discuss License Amendment Request ML13059A1522013-02-27027 February 2013 NRC Meeting Slides from 2/27/13 Public RAI Meeting ML13016A0922013-01-16016 January 2013 G20120891, Friends of the Earth Presentation for 1/16/13 Meeting with to Provide an Opportunity to Address the NRC PRB, Pursuant to 10 CFR 2.206. ML13016A0862013-01-16016 January 2013 Fairwinds Presentation for 1/16/13 Meeting with Friends of the Earth to Provide an Opportunity to Address the NRC PRB, Pursuant to 10 CFR 2.206 (TAC Nos. MF0060 & MF0060) ML12352A4112012-12-18018 December 2012 NRC Slides for 12/18/12 Meeting with Southern California Edison ML12352A3852012-12-18018 December 2012 Licensee Slides for 12/18/12 Public Meeting ML12346A1162012-12-10010 December 2012 Meeting Summary for November 30, 2012, Meeting with Southern California Edison Company ML12311A0492012-09-18018 September 2012 Part 26 Public Meeting NEI Presentation Slides ML12179A4472012-06-26026 June 2012 6/18/2012 Meeting Summary for Augmented Inspection Team Exit Meeting with Southern California Edison Co ML12157A2722012-06-11011 June 2012 5/31/2012 Summary of Telephone Conference with Licensees Regarding Near Term Task Force Recommendation 2.1 Seismic Reevaluations - Diablo Canyon, 1 and 2, San Onofre, Units 2 and 3, Columbia Generating Station, and Palo Verde, Units 1, 2, a ML1101206302011-01-12012 January 2011 License Amendment Request to Support Use of Areva Nuclear Fuel, Slides from 1/12/2011 Meeting ML0932402122009-11-20020 November 2009 Summary of Public Meeting with Southern California Edison Company on San Onofre Nuclear Generating Station 2009 Performance ML0926502992009-09-22022 September 2009 Summary of Public Meeting with Southern California Edison Regarding Site Improvement Initiatives ML0914905092009-05-28028 May 2009 Summary of Meeting with Southern California Edison Company Several Initiatives That Were Being Implemented to Improve Licensed Operator Training at San Onofre Nuclear Generating Station ML11216A2442008-12-12012 December 2008 0523 - R504P - Westinghouse Advanced Technology - 07.3 - Water Hammer at San Onofre ML0832408342008-10-30030 October 2008 Licensee Handout for 10-31-08 Call ML0828804352008-10-14014 October 2008 Summary of Meeting with Southern California Edison to Discuss Performance at San Onofre Nuclear Generating Station ML0822602532008-08-12012 August 2008 Summary of Meeting on with Southern California Edison Co Regarding the End-of-Cycle Assessment of San Onofre Nuclear Generating Station ML0819303742008-06-11011 June 2008 Attachment 2: Presentation Slides by James Shepherd, NRC from June 11, 2008 Public Meeting with SONGS ML0819305802008-06-11011 June 2008 Attachment 4: Presentation Slides, James Reilly, SONGS from June 11, 2008 Public Meeting with SONGS ML0819305432008-06-11011 June 2008 Attachment 3: Presentation Slides, Emilio Garcia, NRC from June 11, 2008 Public Meeting with SONGS ML0729806642007-10-24024 October 2007 Meeting Presentation on Update on Generic Safety Issue 191 Plant Audits ML0727500132007-09-25025 September 2007 9/25/2007 Licensee Handouts for Meeting Re San Onofre Nuclear Generating Station, Unit 3 - Reclassification of Control Rod Drive Mechanism 56 NDE (Non Destructive Examination) Indication ML0720703362007-07-20020 July 2007 Summary of San Onofre Nuclear Generating Station End-Of-Cycle Public Meeting 2021-02-22
[Table view] |
Text
~us.NRC United States Nuclear Regulatory Commission Protecting People and the Environnient San Onofre Special Inspection Webinar November 8, 2018 NRC Region IV, Arlington, TX
US.NRC Logistics United States Nuclear Regulatory Commission Protecting People and the Environment
- Back-up Bridge Line (888) 469-1677, Passcode 2471451
US.NRC NRC Staff United States Nuclear Regulatory Commission Protecting People and the Environment
- Eric Simpson, Special Inspection Team Leader Region IV Fuel Cycle and Decommissioning Branch
- Troy Pruett, Director Region IV Division of Nuclear Materials Safety 3
US.NRC Webinar Agenda United States Nuclear Regulatory Commission Protecting People and the Environment
- Canister Downloading Operations
ISFSI Layout TN NUHOMS Design Holtec UMAX Design 5
Transnuclear NUHOMS 6
Holtec UMAX 7
Vertically Ventilated Module (Vault) 8
Spent Fuel Canister Holtec MPC Transfer Cask 9
Downloading: Shield Cone 10
Downloading: Transporter 11
Downloading: Vault Door 12
Downloading:
Alignment 13
Downloading:
Attaching Slings 14
Downloading:
Attaching Slings 15
Downloading Preparations 16
What Happened on August 3rd?
Low Dose Area Low Dose Area 17
What Happened on August 3rd?
18
What Happened on August 3rd?
19
What Happened on August 3rd?
20
What Happened on August 3rd?
21
US.NRC Post Event Actions United States Nuclear Regulatory Commission Protecting People and the Environment
- Spent Fuel Handling Activities Suspended
- NRC Inspection Activities
- San Onofre Notification to NRC
US.NRC Spent Fuel Handling Activities Suspended United States Nuclear Regulatory Commission Protecting People and the Environment
- MPC 29 lowered into vault
- San Onofre suspends fuel loading
- Inside Transfer Cask
- Seismically Restrained in Fuel Building 23
US.NRC NRC Inspection Activities United States Nuclear Regulatory Commission Protecting People and the Environment
- August 6th: NRC Region IV informally notified of Misalignment Event and initiates daily oversight communications
- August 7th: San Onofre commits to NRC review before resuming operations
- August 17th: NRC decides to conduct Special Inspection
- September 10-14: NRC Special Inspection Team onsite
- NRC to perform inspection prior to resumption of fuel loading 24
US.NRC NRC Inspection Activities United States Nuclear Regulatory Commission Protecting People and the Environment
- 2 Preliminary Escalated Findings
- Failure to provide redundant drop protection
- Failure to report
- Procedures
- Corrective actions
- Training
- Management Oversight Weaknesses 25
US.NRC Causal Evaluations United States Nuclear Regulatory Commission Protecting People and the Environment
- San Onofre Apparent Cause Evaluation
- Holtec Root Cause Analysis
- Common Cause Evaluation 26
US.NRC Root Causes United States Nuclear Regulatory Commission Protecting People and the Environment
- San Onofre Management failed to provide
- Adequate procedures
- Adequate training to support procedure
- Adequate oversight 27
US.NRC Corrective Actions United States Nuclear Regulatory Commission Protecting People and the Environment
- Oversight Improvements 28
US.NRC Event Significance United States Nuclear Regulatory Commission Protecting People and the Environment
- No Actual Drop of Canister
- Load Drop Analysis (if canister fell) 29
US.NRC Next Steps United States Nuclear Regulatory Commission Protecting People and the Environment
- Issue NRC Inspection Report
- NRC Inspection of Causal Analyses
- NRC Inspection of Corrective Actions 30
US.NRC Summary United States Nuclear Regulatory Commission Protecting People and the Environment
- Could have been prevented
- Weaknesses in management oversight
- Increased NRC oversight 31
Questions 32