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| | number = ML15222A547 | | | number = ML15222A547 |
| | issue date = 08/31/2015 | | | issue date = 08/31/2015 |
| | title = Calvert Cliffs, GSI 191 Program Chemical Effects Testing Update Option 2b Closure Approach | | | title = GSI 191 Program Chemical Effects Testing Update Option 2b Closure Approach |
| | author name = | | | author name = |
| | author affiliation = Exelon Generation Co, LLC | | | author affiliation = Exelon Generation Co, LLC |
| | addressee name = Chereskin A N | | | addressee name = Chereskin A |
| | addressee affiliation = NRC/NRR/DORL/LPLI-1 | | | addressee affiliation = NRC/NRR/DORL/LPLI-1 |
| | docket = 05000317, 05000318 | | | docket = 05000317, 05000318 |
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| {{#Wiki_filter:Calvert Cliffs GSI-191 Program Chemical Effects Testing Update Option 2b Closure Approach August 2015 Agenda Introductions Objectives for Meeting Discussion of Chemical Effects Test Plans Discussion of Option 2b Simplified Risk-Informed Closure Plan Refined Debris Generation Topics Strainer Head Loss Testing Strainer Head Loss Correlation Staff Questions & Concerns Schedule for Future Periodic Meetings Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 1 CCNPP Attendees Andre Drake Lead Responsible Engineer GSI-191 Anne Elliott Mechanical Design Engineer Ken Greene Licensing Engineer Craig Sellers Project Manager GSI-191 Steve Kinsey Chemical Effects Testing Eric Federline Project Support & Testing Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 2 Objectives of this Meeting Status of CHLE Testing Status of Risk-Informed Approach Refined Debris Generation Topics Strainer Head Loss Testing Strainer Head Loss Correlation Capture Staff Issues and Concerns Discuss Next Steps Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 3 Status of CHLE Testing First Integrated Test Initiated April 17, 2015 Detector Bed Head Loss Immediately Started Increasing Head loss increased until the test was terminated Started at 1.44 ft Test terminated at 10.25 ft, and rising Test lasted approximately 4.6 hrs Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 4 Status of CHLE Testing (continued) Performed Multiple Investigatory Tests Investigatory Head Loss Testing of Materials Baked Nukon Binder Water Notable Head Loss Impact Unbaked Nukon Water No Notable Head Loss Impact Marinite Board Notable Head Loss Impact Dimetcote 9 IOZ Powder Notable Head Loss Impact Mineral Wool No Notable Head Loss Impact Chemical Analysis of Filtered Material Mineral wool particles - Observed Lead particles Analyzing Aluminosilicate Clay Analyzing Organic Material Analyzing, Believed to be Binder from Fiberglass Head Loss Increase Due to Particulate Migration to Debris Bed Detector Debris Bed Significantly Smaller than Equivalent Installed Strainer 2% of full strainer surface area 12% of circumscribed strainer surface area Much more susceptible to particulate head loss increase Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 5 Simplified Risk-Informed Approach Identify Applicable Strainer Chemical Effects Head Loss Test WCAP-16530 Chemical Surrogates Identify Smallest Double-Ended Guillotine Break(s) that Generate Equivalent Quantity of Fine Fibrous Debris as used in Applicable and Acceptable Head Loss Test Smaller Breaks Acceptable Through Deterministic Analysis Larger Breaks Addressed Probabilistically (Risk-Informed) Two Independent Parallel Analysis Produced Same Positive Results ETRANCO Influence Matrix Approach ENERCON NARWHAL Analysis Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 6 Refined Debris Generation Topics Debris Size Distribution for Mineral Wool and Generic Fiberglass CCNPP Has Assumed Mineral Wool and Generic Fiberglass Debris was 100% Fines CCNPP Desires to Use a 4-Size Debris Distribution for these insulation types Fines, Small Pieces, Large Pieces, and Intact Pieces NRC Accepted 4-Size Debris Distribution for these insulation types at Indian Point [ML082050433, ML093290316, and ML101170237] Mineral wool and generic fiberglass have higher density than NUKON and Thermal Wrap Less Mineral wool and generic fiberglass debris than NUKON and Thermal Wrap CCNPP Insulation Densities NUKON & Thermal Wrap: 2.4 lbm/ft3 Mineral Wool: 8 lbm/ft3 Generic Fiberglass: 3.5 lbm/ft3 to 5.5 lbm/ft3 Mineral Wool and Generic Fiberglass Higher Densities than NUKON and Thermal Wrap CCNPP Debris Quantities NUKON & Thermal Wrap: 1,902 ft3 - 4,565 lbm Generic Fiberglass: 248 ft3 - 1,363 lbm (based on 5.5 lbm/ft3 maximum density) Mineral Wool: 61.5 ft3 - 492 lbm Mineral Wool and Generic Fiberglass Smaller Quantities than NUKON and Thermal Wrap Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 7 Strainer Head Loss Testing CCNPP Conducted 7 Strainer Head Loss Tests in 2010 Tests included WCAP-16530 Chemical Precipitate Surrogate Test #1 Included Fine and Small Fibrous Debris Maximum Head Loss 1.75 inches of water Non-Uniform Debris Deposition | | {{#Wiki_filter:Calvert Cliffs GSI-191 Program Chemical Effects Testing Update Option 2b Closure Approach August 2015 |
| | |
| | Agenda |
| | * Introductions |
| | * Objectives for Meeting |
| | * Discussion of Chemical Effects Test Plans |
| | * Discussion of Option 2b Simplified Risk-Informed Closure Plan |
| | * Refined Debris Generation Topics |
| | * Strainer Head Loss Testing |
| | * Strainer Head Loss Correlation |
| | * Staff Questions & Concerns |
| | * Schedule for Future Periodic Meetings 1 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | CCNPP Attendees |
| | * Andre Drake - Lead Responsible Engineer GSI-191 |
| | * Anne Elliott - Mechanical Design Engineer |
| | * Ken Greene - Licensing Engineer |
| | * Craig Sellers - Project Manager GSI-191 |
| | * Steve Kinsey - Chemical Effects Testing |
| | * Eric Federline - Project Support & Testing 2 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Objectives of this Meeting |
| | * Status of CHLE Testing |
| | * Status of Risk-Informed Approach |
| | * Refined Debris Generation Topics |
| | * Strainer Head Loss Testing |
| | * Strainer Head Loss Correlation |
| | * Capture Staff Issues and Concerns |
| | * Discuss Next Steps 3 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Status of CHLE Testing |
| | * First Integrated Test Initiated April 17, 2015 |
| | * Detector Bed Head Loss Immediately Started Increasing |
| | * Head loss increased until the test was terminated |
| | - Started at 1.44 ft |
| | - Test terminated at 10.25 ft, and rising |
| | * Test lasted approximately 4.6 hrs 11 Vertical Loop Online (t = 0.9 hrs) |
| | High Range DP Cell Higher Range DP Cell Start of test (t = 0 hrs) 10 Pegged (t = 3.7 hrs) 9 Installed (t = 4.3 hrs) 8 7 |
| | Head Loss [ft] |
| | 6 5 |
| | 4 3 |
| | 2 1 |
| | 0 4 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Status of CHLE Testing (continued) |
| | * Performed Multiple Investigatory Tests |
| | - Investigatory Head Loss Testing of Materials |
| | * Baked Nukon Binder Water - Notable Head Loss Impact |
| | * Unbaked Nukon Water - No Notable Head Loss Impact |
| | * Marinite Board - Notable Head Loss Impact |
| | * Dimetcote 9 IOZ Powder - Notable Head Loss Impact |
| | * Mineral Wool - No Notable Head Loss Impact |
| | - Chemical Analysis of Filtered Material |
| | * Mineral wool particles - Observed |
| | * Lead particles - Analyzing |
| | * Aluminosilicate Clay - Analyzing |
| | * Organic Material - Analyzing, Believed to be Binder from Fiberglass |
| | * Head Loss Increase Due to Particulate Migration to Debris Bed |
| | * Detector Debris Bed Significantly Smaller than Equivalent Installed Strainer |
| | - 2% of full strainer surface area |
| | - 12% of circumscribed strainer surface area |
| | - Much more susceptible to particulate head loss increase 5 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Simplified Risk-Informed Approach |
| | * Identify Applicable Strainer Chemical Effects Head Loss Test |
| | - WCAP-16530 Chemical Surrogates |
| | * Identify Smallest Double-Ended Guillotine Break(s) that Generate Equivalent Quantity of Fine Fibrous Debris as used in Applicable and Acceptable Head Loss Test |
| | * Smaller Breaks Acceptable Through Deterministic Analysis |
| | * Larger Breaks Addressed Probabilistically (Risk-Informed) |
| | * Two Independent Parallel Analysis Produced Same Positive Results |
| | - ETRANCO Influence Matrix Approach |
| | - ENERCON NARWHAL Analysis 6 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Refined Debris Generation Topics |
| | * Debris Size Distribution for Mineral Wool and Generic Fiberglass |
| | * CCNPP Has Assumed Mineral Wool and Generic Fiberglass Debris was 100% Fines |
| | * CCNPP Desires to Use a 4-Size Debris Distribution for these insulation types |
| | - Fines, Small Pieces, Large Pieces, and Intact Pieces |
| | * NRC Accepted 4-Size Debris Distribution for these insulation types at Indian Point [ML082050433, ML093290316, and ML101170237] |
| | - Mineral wool and generic fiberglass have higher density than NUKON and Thermal Wrap |
| | - Less Mineral wool and generic fiberglass debris than NUKON and Thermal Wrap |
| | * CCNPP Insulation Densities |
| | - NUKON & Thermal Wrap: 2.4 lbm/ft3 |
| | - Mineral Wool: 8 lbm/ft3 |
| | - Generic Fiberglass: 3.5 lbm/ft3 to 5.5 lbm/ft3 |
| | - Mineral Wool and Generic Fiberglass Higher Densities than NUKON and Thermal Wrap |
| | * CCNPP Debris Quantities |
| | - NUKON & Thermal Wrap: 1,902 ft3 - 4,565 lbm |
| | - Generic Fiberglass: 248 ft3 - 1,363 lbm (based on 5.5 lbm/ft3 maximum density) |
| | - Mineral Wool: 61.5 ft3 - 492 lbm |
| | - Mineral Wool and Generic Fiberglass Smaller Quantities than NUKON and Thermal Wrap 7 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Strainer Head Loss Testing |
| | * CCNPP Conducted 7 Strainer Head Loss Tests in 2010 |
| | - Tests included WCAP-16530 Chemical Precipitate Surrogate |
| | * Test #1 Included Fine and Small Fibrous Debris |
| | - Maximum Head Loss 1.75 inches of water |
| | - Non-Uniform Debris Deposition |
|
| |
|
| == Conclusion:== | | == Conclusion:== |
| Testing with Small Pieces is Non-Conservative Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 8 Strainer Head Loss Testing (continued) Remaining Tests Used Only Fine Fibrous Debris Full load of particulates and precipitates Test for Success Campaign Break-throughs experienced during each test Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 9 Strainer Head Loss Testing (continued) Tests included same insulation types as installed in plant EXCEPT no mineral wool was included in tests Test for success campaign based on multiple insulation replacement schemes all of which included 100% replacement of mineral wool Significantly larger particulate load used in test. CCNPP particulate source term reduced since 2010 Mineral wool <10% of fiber debris source term CHLE investigatory tests showed no notable head loss impact from mineral wool Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 10 Strainer Head Loss Correlation Plot of Head Loss vs- Fiber Mass produces well correlated curve fit Plot includes clean strainer head loss Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 11 y = 0.0803e2.1877x R² = 0.9939 00.511.522.533.5400.511.52Head Loss (ft-water) Debris Mass (kg) Head Loss Data - Test Data + Clean Screen Questions/Concerns Jointly Review Issues, Questions, and Concerns for Future Communication Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 12 Next Steps Update Debris Generation Calculations Present Risk-Informed GSI-191 Analysis Results Desire Next Meeting October 2015 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan 13}} | | Testing with Small Pieces is Non-Conservative 8 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Strainer Head Loss Testing (continued) |
| | * Remaining Tests Used Only Fine Fibrous Debris |
| | - Full load of particulates and precipitates |
| | - Test for Success Campaign |
| | - Break-throughs experienced during each test 9 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Strainer Head Loss Testing (continued) |
| | * Tests included same insulation types as installed in plant |
| | - EXCEPT no mineral wool was included in tests |
| | * Test for success campaign based on multiple insulation replacement schemes all of which included 100% replacement of mineral wool |
| | * Significantly larger particulate load used in test. |
| | - CCNPP particulate source term reduced since 2010 |
| | * Mineral wool <10% of fiber debris source term |
| | * CHLE investigatory tests showed no notable head loss impact from mineral wool 10 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Strainer Head Loss Correlation |
| | * Plot of Head Loss -vs- Fiber Mass produces well correlated curve fit |
| | * Plot includes clean strainer head loss Head Loss Data - Test Data + Clean Screen 4 |
| | 3.5 3 |
| | Head Loss (ft-water) 2.5 y = 0.0803e2.1877x R² = 0.9939 2 |
| | 1.5 1 |
| | 0.5 0 |
| | 0 0.5 1 1.5 2 Debris Mass (kg) 11 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Questions/Concerns |
| | * Jointly Review Issues, Questions, and Concerns for Future Communication 12 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan |
| | |
| | Next Steps |
| | * Update Debris Generation Calculations |
| | * Present Risk-Informed GSI-191 Analysis Results |
| | * Desire Next Meeting - October 2015 13 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan}} |
Letter Sequence Request |
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Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance...
- Supplement, Supplement
Administration
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
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Category:Meeting Briefing Package/Handouts
MONTHYEARML24029A1742024-01-30030 January 2024 Constellation Pre-Application January 30, 2024, Meeting Slides - Proposed Alternative to Utilize Code Case N-932, Alternative Requirements for Acceptance of Containment Base Metal Corrosion or Erosion ML23317A0712023-11-14014 November 2023 NRC Pre-Submittal Meeting on November 14th, 2023 - TSTF-591 and Selected 50.69 License Condition Updates (EPID L-2023-LLM-0098) (Slides) ML23255A1042023-08-11011 August 2023 Slides - Constellation - Pre-Application EP 9/18/2023 Draft CEG Presubmittal SG Performance Monitoring Plan Meeting Handout ML23157A0352023-06-0606 June 2023 Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - NRC Presentation Slides ML23033A6662023-02-0909 February 2023 Summary of Public Meeting with Constellation Energy Generation, LLC (Constellation) to Discuss Its Request for Alternatives for Certain Steam Generator Weld Inspections for Calvert Cliffs 1 & 2, Byron 1 & 2, Braidwood 1 & 2, and Ginna ML23033A6672023-01-30030 January 2023 Public Call with Constellation January 30, 2023 (Slides) ML22013A3942022-01-13013 January 2022 Presentation Information for Pre-Submittal Meeting Regarding Relief Request to Use the Carbon Fiber Reinforced Polymer (Cfrp) Composite System ML21314A4472021-11-10010 November 2021 Slides for Presubmittial Meeting for Proposed Alternative to Adopt ASME Code Case N-921 to Extend the Inservice Inspection Interval ML21165A1942021-06-16016 June 2021 Joint Annual Assessment Meeting for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation ML21165A2882021-06-16016 June 2021 Joint Annual Assessment for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation (Updated) ML21144A0172021-05-24024 May 2021 Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request Pre-Submittal Meeting ML21134A0162021-05-24024 May 2021 Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request - NRC Pre-submittal Meeting Telecon May 24, 2021 (EPID L-2021-LRM-0051) (Slides) ML20261G7322020-09-16016 September 2020 Pre-Submittal Slides Extend 120-month Isi/Ist Interval Under 50.55a ML20246G8772020-09-0303 September 2020 Licensee'S Presentation for September 3, 2020 Public Telephone Conference ML20178A4202020-06-30030 June 2020 NEI Slides for June 30, 2020, Public Meeting on COVID-19 Response ML20175A8722020-06-23023 June 2020 Risk-Informed Inservice Inspection - U.S Nuclear Regulatory Commission (NRC) - Four Element Risk-Informed Approach ML20170B0212020-06-23023 June 2020 NRC Pre-Submittal Meeting Byron Unit 2 One-Time Deferral of Reactor Pressure Vessel Head Penetration Nozzle (Rpvhpn) Inspections ML20169A5592020-06-16016 June 2020 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - Byron Unit 2 LAR for One-Time Deferral of Steam Generator Inspections (Rev 1) ML20163A6552020-06-16016 June 2020 6-16-20 Byron Unit 2 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - Byron Unit 2 LAR for One-Time Deferral of Steam Generator Inspections ML20168A3192020-06-15015 June 2020 Joint Annual Assessment Meeting for Pa/Md Power Plants - Webinar Presentation ML19318F9512019-11-20020 November 2019 Presentation Slides for November 20, 2019, Pre-Application Meeting - Request for Revision to Quality Assurance Program Internal Audit Frequency ML19317C9952019-11-12012 November 2019 In-Service Testing Supplemental Position Indication Relief Request NRC Pre-Application Meeting November 18, 2019 ML19246B7162019-08-29029 August 2019 Meeting Between NRC and Exelon Regarding Calvert Cliffs-2 LAR to Use Framatome ATF LTAs ML19161A2572019-06-0404 June 2019 BWR Fleet Msv/Srv - Testing Frequency Relief Request NRC Pre-Application Meeting June 4, 2019 ML19151A6602019-05-31031 May 2019 BWR Fleet Mssv/Srv Testing Frequency Relief Request NRC Pre-Application Meeting June 4, 2019 ML19022A2002019-01-23023 January 2019 Request for Use of ASME Code Case N-879 for Exelon Nuclear Power Plants ML18347B3142018-12-19019 December 2018 Bwrvip/Asme Relief Request Discussion December 19, 2018 ML18334A2162018-11-30030 November 2018 Presentation Slides: Exelon BWR MSIV (Boiling-Water Reactor - Main Steam Isolation Valve) Leakage Optimization for NRC Pre-Submittal Meeting of December 6, 2018 ML18319A1272018-11-19019 November 2018 Slides for 11/19/18 Public Meeting - Exelon Fleet LAR for Common Language for TS 5.7 High Radiation Areas ML18276A0712018-10-0404 October 2018 Exelon'S Presentation for October 4, 2018 Public Pre-Submittal Meeting on Planned Calvert Cliffs 10CFR50.69 LAR ML18171A0842018-06-21021 June 2018 GSI-191 Program Use of Risk Metrics for Containment Sump Tech Spec Operability Determination June 21, 2018 Public Meeting Slides (MF8521, MF8522; L-2016-LRM-0001) ML18190A3922018-06-14014 June 2018 Licensee Presentation Material for June 14, 2018 Public Meeting ML18136A4932018-05-16016 May 2018 Licensee'S Slides for Pre-Application Meeting W/Exelon Re Planned GSI-191 LAR for Calvert Cliffs (L-2016-LRM-0001) ML18096A0222018-04-0404 April 2018 Annual Assessment Meeting 04/04/2018 Handouts ML18096A9902018-03-12012 March 2018 NRC Pre-Submittal Call Briefing Notes, Calvert Cliffs Emergency Planning Future Licensing Actions ML18054B3592018-02-27027 February 2018 Slide: NRC Pre-Submittal Meeting for Exelon Fleet LAR to Relocate TS Unit Staff Qualification ANSI Requirements to the QATR, February 27, 2018, Profile Info: Submitted by Frank Mascitelli ML17142A2382017-05-25025 May 2017 OEDO-17-00280 - Briefing Package for Drop-In Visit on June 9, 2017, by Senior Management of Exelon Generation Company, LLC with Chairman Svinicki, Commissioner Baran, and Commissioner Burns ML17143A1612017-05-23023 May 2017 Annual Assessment Meeting Handout and Sign in Sheet ML16274A0012016-09-30030 September 2016 PWR MSIP Analysis and Measurements ML16077A1562016-03-22022 March 2016 Fleet: Pre-application Teleconference with Exelon to Discuss a Potential License Amendment Request Regarding Operating Training Standards ML16075A3292016-03-16016 March 2016 OEDO-16-00165 - Briefing Package for Drop-In Visit on March 23, 2016, by Senior Management of Exelon Generation Company, LLC with the NRC Executive Director for Operations ML15321A3702015-12-0101 December 2015 GSI-191 Program Strainer Head Loss Testing and Option 2b Closure Approach ML15308A1072015-11-0505 November 2015 TSTF-505 LAR - NRC Pre-Submittal, November 5, 2015 Meeting Slides ML15282A0832015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application - Final ML15279A4992015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application ML15222A5472015-08-31031 August 2015 GSI 191 Program Chemical Effects Testing Update Option 2b Closure Approach ML15152A0822015-06-0404 June 2015 Presentation for the June 4, 2015 Public Meeting Regarding the National Fire Protection Association Standard 805 License Amendment Request ML14230A9132014-08-18018 August 2014 Enclosure - Fuel Performance and Cask Internals - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L ML14230A9112014-08-18018 August 2014 Enclosure - Example AMP - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L24475 ML14230A9102014-08-18018 August 2014 Enclosure - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L24475 2024-01-30
[Table view] Category:Slides and Viewgraphs
MONTHYEARML24029A1742024-01-30030 January 2024 Constellation Pre-Application January 30, 2024, Meeting Slides - Proposed Alternative to Utilize Code Case N-932, Alternative Requirements for Acceptance of Containment Base Metal Corrosion or Erosion ML23317A0712023-11-14014 November 2023 NRC Pre-Submittal Meeting on November 14th, 2023 - TSTF-591 and Selected 50.69 License Condition Updates (EPID L-2023-LLM-0098) (Slides) ML23255A1042023-08-11011 August 2023 Slides - Constellation - Pre-Application EP 9/18/2023 Draft CEG Presubmittal SG Performance Monitoring Plan Meeting Handout ML23157A0352023-06-0606 June 2023 Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - NRC Presentation Slides NEI 99-01, Slides - Constellation - Pre-Application EP 2/23/2023 Meeting Slides2023-02-21021 February 2023 Slides - Constellation - Pre-Application EP 2/23/2023 Meeting Slides ML23033A6662023-02-0909 February 2023 Summary of Public Meeting with Constellation Energy Generation, LLC (Constellation) to Discuss Its Request for Alternatives for Certain Steam Generator Weld Inspections for Calvert Cliffs 1 & 2, Byron 1 & 2, Braidwood 1 & 2, and Ginna ML23033A6672023-01-30030 January 2023 Public Call with Constellation January 30, 2023 (Slides) ML22124A1492022-05-10010 May 2022 (Ccnpp) Control Element Assembly (CEA) Recovery Time Improvement Project LAR Pre-Submittal Non-Proprietary (Public) ML22124A1482022-05-10010 May 2022 (Ccnpp) Control Element Assembly (CEA) Recovery Time Improvement Project LAR Pre-Submittal Redacted (Public) ML22013A3942022-01-13013 January 2022 Presentation Information for Pre-Submittal Meeting Regarding Relief Request to Use the Carbon Fiber Reinforced Polymer (Cfrp) Composite System ML21314A4472021-11-10010 November 2021 Slides for Presubmittial Meeting for Proposed Alternative to Adopt ASME Code Case N-921 to Extend the Inservice Inspection Interval ML21165A1942021-06-16016 June 2021 Joint Annual Assessment Meeting for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation ML21165A2882021-06-16016 June 2021 Joint Annual Assessment for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation (Updated) ML21162A3322021-06-11011 June 2021 BWR Fleet Relief Request Associated with RPV Instrument Nozzle Repairs ML21144A0172021-05-24024 May 2021 Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request Pre-Submittal Meeting ML21134A0162021-05-24024 May 2021 Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request - NRC Pre-submittal Meeting Telecon May 24, 2021 (EPID L-2021-LRM-0051) (Slides) ML20261G7322020-09-16016 September 2020 Pre-Submittal Slides Extend 120-month Isi/Ist Interval Under 50.55a ML20246G8772020-09-0303 September 2020 Licensee'S Presentation for September 3, 2020 Public Telephone Conference ML20178A4202020-06-30030 June 2020 NEI Slides for June 30, 2020, Public Meeting on COVID-19 Response ML20170B0212020-06-23023 June 2020 NRC Pre-Submittal Meeting Byron Unit 2 One-Time Deferral of Reactor Pressure Vessel Head Penetration Nozzle (Rpvhpn) Inspections ML20175A8722020-06-23023 June 2020 Risk-Informed Inservice Inspection - U.S Nuclear Regulatory Commission (NRC) - Four Element Risk-Informed Approach ML20163A6542020-06-18018 June 2020 2020 NRC Annual Assessment Webinar Presentation - Pennsylvania and Maryland Facilities (Beaver Valley, Calvert Cliffs, Limerick, Peach Bottom, Susquehanna) ML20169A5592020-06-16016 June 2020 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - Byron Unit 2 LAR for One-Time Deferral of Steam Generator Inspections (Rev 1) ML20163A6552020-06-16016 June 2020 6-16-20 Byron Unit 2 Steam Generator License Amendment Request Pre-Submittal Meeting (NRC) - Byron Unit 2 LAR for One-Time Deferral of Steam Generator Inspections ML20168A3192020-06-15015 June 2020 Joint Annual Assessment Meeting for Pa/Md Power Plants - Webinar Presentation ML19246B7162019-08-29029 August 2019 Meeting Between NRC and Exelon Regarding Calvert Cliffs-2 LAR to Use Framatome ATF LTAs ML18347B3142018-12-19019 December 2018 Bwrvip/Asme Relief Request Discussion December 19, 2018 ML18334A2162018-11-30030 November 2018 Presentation Slides: Exelon BWR MSIV (Boiling-Water Reactor - Main Steam Isolation Valve) Leakage Optimization for NRC Pre-Submittal Meeting of December 6, 2018 ML18319A1272018-11-19019 November 2018 Slides for 11/19/18 Public Meeting - Exelon Fleet LAR for Common Language for TS 5.7 High Radiation Areas ML18276A0712018-10-0404 October 2018 Exelon'S Presentation for October 4, 2018 Public Pre-Submittal Meeting on Planned Calvert Cliffs 10CFR50.69 LAR ML18171A0842018-06-21021 June 2018 GSI-191 Program Use of Risk Metrics for Containment Sump Tech Spec Operability Determination June 21, 2018 Public Meeting Slides (MF8521, MF8522; L-2016-LRM-0001) ML18136A4932018-05-16016 May 2018 Licensee'S Slides for Pre-Application Meeting W/Exelon Re Planned GSI-191 LAR for Calvert Cliffs (L-2016-LRM-0001) ML18054B3592018-02-27027 February 2018 Slide: NRC Pre-Submittal Meeting for Exelon Fleet LAR to Relocate TS Unit Staff Qualification ANSI Requirements to the QATR, February 27, 2018, Profile Info: Submitted by Frank Mascitelli ML16328A2832016-11-18018 November 2016 Supplemental Presentation Slides for 10/25/2016 Public Meeting Via E-mail from K.Greene to R.Guzman Calvert Cliffs GSI-191 Resolution Update ML16307A4902016-10-25025 October 2016 Presentation Slides from Public Meeting Calvert Cliffs GSI-191 Resolution Update ML16274A0012016-09-30030 September 2016 PWR MSIP Analysis and Measurements ML16242A1782016-09-0101 September 2016 Presentation Slides from Public Meeting Regarding Calvert Cliffs GSI-191 Resolution Update ML16198A0012016-07-18018 July 2016 Presentation Slides from Public Meeting Regarding Calvert Cliffs GSI-191 Resolution Update ML16077A1562016-03-22022 March 2016 Fleet: Pre-application Teleconference with Exelon to Discuss a Potential License Amendment Request Regarding Operating Training Standards ML15321A3702015-12-0101 December 2015 GSI-191 Program Strainer Head Loss Testing and Option 2b Closure Approach ML15308A1072015-11-0505 November 2015 TSTF-505 LAR - NRC Pre-Submittal, November 5, 2015 Meeting Slides ML15279A4992015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application ML15282A0832015-10-0808 October 2015 October 8, 2015, Public Meeting Regarding the NFPA-805 License Amendment Application - Final ML15222A5472015-08-31031 August 2015 GSI 191 Program Chemical Effects Testing Update Option 2b Closure Approach ML15152A0822015-06-0404 June 2015 Presentation for the June 4, 2015 Public Meeting Regarding the National Fire Protection Association Standard 805 License Amendment Request ML14230A9132014-08-18018 August 2014 Enclosure - Fuel Performance and Cask Internals - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L ML14230A9112014-08-18018 August 2014 Enclosure - Example AMP - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L24475 ML14230A9102014-08-18018 August 2014 Enclosure - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L24475 ML14230A9092014-08-18018 August 2014 Enclosure - Generic Concrete AMP CC ISFSI - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L24475 ML14230A9082014-08-18018 August 2014 Enclosure - Elements of an AMP CC ISFSI - July 17, 2014, Summary of Meeting with Exelon Corporation to Discuss Request for Additional Information No. 4 to the Calvert Cliffs ISFSI License Renewal Application (Docket No. 72-08) TAC L24475 2024-01-30
[Table view] |
Text
Calvert Cliffs GSI-191 Program Chemical Effects Testing Update Option 2b Closure Approach August 2015
Agenda
- Discussion of Chemical Effects Test Plans
- Discussion of Option 2b Simplified Risk-Informed Closure Plan
- Refined Debris Generation Topics
- Strainer Head Loss Testing
- Strainer Head Loss Correlation
- Staff Questions & Concerns
- Schedule for Future Periodic Meetings 1 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
CCNPP Attendees
- Andre Drake - Lead Responsible Engineer GSI-191
- Anne Elliott - Mechanical Design Engineer
- Ken Greene - Licensing Engineer
- Craig Sellers - Project Manager GSI-191
- Steve Kinsey - Chemical Effects Testing
- Eric Federline - Project Support & Testing 2 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Objectives of this Meeting
- Status of Risk-Informed Approach
- Refined Debris Generation Topics
- Strainer Head Loss Testing
- Strainer Head Loss Correlation
- Capture Staff Issues and Concerns
- Discuss Next Steps 3 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Status of CHLE Testing
- First Integrated Test Initiated April 17, 2015
- Detector Bed Head Loss Immediately Started Increasing
- Head loss increased until the test was terminated
- Started at 1.44 ft
- Test terminated at 10.25 ft, and rising
- Test lasted approximately 4.6 hrs 11 Vertical Loop Online (t = 0.9 hrs)
High Range DP Cell Higher Range DP Cell Start of test (t = 0 hrs) 10 Pegged (t = 3.7 hrs) 9 Installed (t = 4.3 hrs) 8 7
Head Loss [ft]
6 5
4 3
2 1
0 4 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Status of CHLE Testing (continued)
- Performed Multiple Investigatory Tests
- Investigatory Head Loss Testing of Materials
- Baked Nukon Binder Water - Notable Head Loss Impact
- Unbaked Nukon Water - No Notable Head Loss Impact
- Marinite Board - Notable Head Loss Impact
- Dimetcote 9 IOZ Powder - Notable Head Loss Impact
- Mineral Wool - No Notable Head Loss Impact
- Chemical Analysis of Filtered Material
- Mineral wool particles - Observed
- Lead particles - Analyzing
- Aluminosilicate Clay - Analyzing
- Organic Material - Analyzing, Believed to be Binder from Fiberglass
- Head Loss Increase Due to Particulate Migration to Debris Bed
- Detector Debris Bed Significantly Smaller than Equivalent Installed Strainer
- 2% of full strainer surface area
- 12% of circumscribed strainer surface area
- Much more susceptible to particulate head loss increase 5 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Simplified Risk-Informed Approach
- Identify Applicable Strainer Chemical Effects Head Loss Test
- WCAP-16530 Chemical Surrogates
- Identify Smallest Double-Ended Guillotine Break(s) that Generate Equivalent Quantity of Fine Fibrous Debris as used in Applicable and Acceptable Head Loss Test
- Smaller Breaks Acceptable Through Deterministic Analysis
- Larger Breaks Addressed Probabilistically (Risk-Informed)
- Two Independent Parallel Analysis Produced Same Positive Results
- ETRANCO Influence Matrix Approach
- ENERCON NARWHAL Analysis 6 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Refined Debris Generation Topics
- Debris Size Distribution for Mineral Wool and Generic Fiberglass
- CCNPP Has Assumed Mineral Wool and Generic Fiberglass Debris was 100% Fines
- CCNPP Desires to Use a 4-Size Debris Distribution for these insulation types
- Fines, Small Pieces, Large Pieces, and Intact Pieces
- NRC Accepted 4-Size Debris Distribution for these insulation types at Indian Point [ML082050433, ML093290316, and ML101170237]
- Mineral wool and generic fiberglass have higher density than NUKON and Thermal Wrap
- Less Mineral wool and generic fiberglass debris than NUKON and Thermal Wrap
- CCNPP Insulation Densities
- NUKON & Thermal Wrap: 2.4 lbm/ft3
- Mineral Wool: 8 lbm/ft3
- Generic Fiberglass: 3.5 lbm/ft3 to 5.5 lbm/ft3
- Mineral Wool and Generic Fiberglass Higher Densities than NUKON and Thermal Wrap
- NUKON & Thermal Wrap: 1,902 ft3 - 4,565 lbm
- Generic Fiberglass: 248 ft3 - 1,363 lbm (based on 5.5 lbm/ft3 maximum density)
- Mineral Wool: 61.5 ft3 - 492 lbm
- Mineral Wool and Generic Fiberglass Smaller Quantities than NUKON and Thermal Wrap 7 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Strainer Head Loss Testing
- CCNPP Conducted 7 Strainer Head Loss Tests in 2010
- Tests included WCAP-16530 Chemical Precipitate Surrogate
- Test #1 Included Fine and Small Fibrous Debris
- Maximum Head Loss 1.75 inches of water
- Non-Uniform Debris Deposition
Conclusion:
Testing with Small Pieces is Non-Conservative 8 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Strainer Head Loss Testing (continued)
- Remaining Tests Used Only Fine Fibrous Debris
- Full load of particulates and precipitates
- Test for Success Campaign
- Break-throughs experienced during each test 9 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Strainer Head Loss Testing (continued)
- Tests included same insulation types as installed in plant
- EXCEPT no mineral wool was included in tests
- Test for success campaign based on multiple insulation replacement schemes all of which included 100% replacement of mineral wool
- Significantly larger particulate load used in test.
- CCNPP particulate source term reduced since 2010
- Mineral wool <10% of fiber debris source term
- CHLE investigatory tests showed no notable head loss impact from mineral wool 10 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Strainer Head Loss Correlation
- Plot of Head Loss -vs- Fiber Mass produces well correlated curve fit
- Plot includes clean strainer head loss Head Loss Data - Test Data + Clean Screen 4
3.5 3
Head Loss (ft-water) 2.5 y = 0.0803e2.1877x R² = 0.9939 2
1.5 1
0.5 0
0 0.5 1 1.5 2 Debris Mass (kg) 11 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Questions/Concerns
- Jointly Review Issues, Questions, and Concerns for Future Communication 12 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan
Next Steps
- Update Debris Generation Calculations
- Present Risk-Informed GSI-191 Analysis Results
- Desire Next Meeting - October 2015 13 Calvert Cliffs Chemical Effects Testing & Option 2b Refined Closure Plan