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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 |
| Line 13: |
Line 13: |
| | page count = 14 | | | page count = 14 |
| }} | | }} |
| | |
| | =Text= |
| | {{#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:== |
| | 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 |
|---|
|
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
|
MONTHYEARML0515100172005-05-31031 May 2005
Draft RAI on Response to Generic Letter 2004-02
Project stage: Draft RAI
ML0515303042005-06-0303 June 2005
6/3/05, Calvert Cliffs - RAI Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors
Project stage: RAI
ML0603803582006-02-0909 February 2006
RAI, Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design-Basis Accidents at Pressurized-Water Reactors
Project stage: RAI
ML0609500512006-04-12012 April 2006
Approval of Extension Request for Completion of Corrective Actions in Response to Generic Letter 2004-02
Project stage: Other
ML0618702222006-06-30030 June 2006
Calvert Cliffs, Units 1 & 2 Update of Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Basis Accidents at Pressurized Water Reactors
Project stage: Other
ML0626405472006-09-20020 September 2006
Update of Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors
Project stage: Other
ML0633407022006-12-18018 December 2006
Unit No.1 - Approval of Extension Request for Completion of Corrective Action in Response to Generic Letter 2004-02
Project stage: Other
ML0712703722007-05-0202 May 2007
Calvert Cliffs Revision to Generic Letter 2004-02 Response
Project stage: Other
ML0734504992007-12-10010 December 2007
Attachment (1) Request for Extension of the Completion Date for Corrective Actions Related to Generic Letter 2004-02
Project stage: Request
ML0734504982007-12-10010 December 2007
Request for Extension for Completion of Activities Related to Generic Letter 2004-02
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ML0811307392008-04-22022 April 2008
Revision to Generic Letter 2004-02 Response
Project stage: Other
ML0817101052008-06-18018 June 2008
Attachment 1, Request for Extension of the Completion Date for Corrective Actions Related to Generic Letter 2004-02
Project stage: Request
ML0827404972008-09-30030 September 2008
Calvert Cliffs Nuclear Plant, Attachment 2, ECCS and CS System Figures
Project stage: Other
ML0827404892008-09-30030 September 2008
Supplemental Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors.
Project stage: Supplement
ML0833003202008-12-0404 December 2008
Request for Additional Information Supplemental Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors-Calvert Cliffs Unit 1 & 2
Project stage: RAI
ML0906807672009-03-0404 March 2009
Request for Additional Information: Supplemental Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors
Project stage: Supplement
ML1009500782010-04-12012 April 2010
Request for Additional Information Generic Letter 2004-02 Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2-(TAC Nos. MC4672 and MC4673)
Project stage: RAI
ML1011903842010-05-0606 May 2010
Notice of Forthcoming Conference Call with Calvert Cliffs to Discuss Supplemental Responses to Generic Ltr. 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors
Project stage: Request
ML1014708982010-06-0707 June 2010
Summary of Meeting with Calvert Cliffs Nuclear Power Plant, LLC, to Discuss Supplement to Responses to Generic Letter 2004-02
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Catawba Units 1 & 2, Draft Responses to NRC Request for Additional Information Related to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents on Pressurized-Water....
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Notice of Forthcoming Conference Call with Duke Energy Carolinas, LLC Regarding McGuire Nuclear Station, Units 1 and 2 and Catawba Nuclear Station, Units 1 and 2,
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Summary of November 1, 2010, Meeting with Duke to Discuss Responses to Generic Letter (GL) 2004-02 (Tac Nos. MC4673, MC4674, MC4692, and MC4693)
Project stage: Meeting
ML1031903612010-11-10010 November 2010
Response to Request for Additional Information Regarding Generic Letter 2004-02 (TAC Nos. MC4672 and MC4673)
Project stage: Response to RAI
ML13086A5512013-01-24024 January 2013
MC4672 & MC4673 - CCNPP-CHLE-003, Rev 0c Chemical Effects Pirt Considerations Excerpts with Respect to GL2004-02, GSI-191
Project stage: Other
ML13038A5432013-01-24024 January 2013
Chemical Effects Head Loss Experiment (Chle) Test Protocol for Calvert Cliffs Nuclear Power Plant (CCNPP-CHLE-002, Revision 0d)
Project stage: Request
ML13050A5112013-02-19019 February 2013
MC4672-3 Corrected Notice -Public Meeting on March 20, 2013 Re-GL2004-02
Project stage: Request
ML13045A1822013-02-19019 February 2013
March 20, 2013, Notice of Forthcoming Teleconference with Calvert Cliffs and Nrc/Nrr Staff to Have Additional Discussions of Licensees'S Proposed Path for Resolution of Generic Letter 2004-02
Project stage: Meeting
ML13086A5502013-03-0101 March 2013
MC4672 & MC4673, CCNPP-CHLE-002, Rev 0e Chemical Effects Experimental Protocol with Respect to GL2004-02, GSI-191.
Project stage: Request
ML13088A2202013-03-18018 March 2013
MC4672 & MC4673 - CCNPP-CHLE-005, Rev 1 Chemical Effects Autoclave Experimental Plan with Respect to GL2004-02, GSI-1 91
Project stage: Request
ML13086A5492013-03-20020 March 2013
MC4672 & MC4673 - Licensee Presentation-Category 1, Public Meeting on March 20, 2013 with Respect to GL2004-02, GSI-191
Project stage: Meeting
ML13091A0552013-04-10010 April 2013
Summary of Meeting on March 20, 2013, with Calvert Cliffs Nuclear Power Plant, LLC, to Discuss the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation D
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ML13149A3942013-05-20020 May 2013
Chemical Effects Head Loss Experiment (Chle) Test Protocol for Calvert Cliffs Nuclear Power Plant, CCNPP-CHLE-002, Revision 0 May 20, 2013
Project stage: Request
ML13149A3992013-05-20020 May 2013
Chemical Effects Autoclave Experiment Test Plan for Calvert Cliffs Nuclear Power Plant CCNPP-CHLE-005, Revision 2, May 20, 2013
Project stage: Request
ML13149A4052013-05-23023 May 2013
Metals BENCH-TOP Autoclave Experiment Test Plan for Calvert Cliffs Nuclear Power Plant, CCNPP-CHLE-006, Revision 0, May 23, 2013
Project stage: Request
ML13148A3962013-05-29029 May 2013
Forthcoming Meeting with Calvert Cliffs Nuclear Power Plant, LLC to Discuss Licensee'S Proposed Plan for Resolution of GL 2004-02
Project stage: Meeting
ML13179A3132013-07-11011 July 2013
June 12, 2013 Summary of Meeting with Constellation Energy Group, Inc., to Continue Discussions on the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculati
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ML13224A0942013-08-0606 August 2013
Chemical Effects Pirt Considerations for Calvert Cliffs Nuclear Power Plant, CCNPP-CHLE-003, Revision 0c
Project stage: Request
ML13224A1032013-08-0808 August 2013
CCNPP-CHLE-007, Revision 0c, Coatings Bench-Top Autoclave Experiment Test Plan for Calvert Cliffs Nuclear Power Plant.
Project stage: Request
ML13226A0902013-08-14014 August 2013
Notice of Forthcoming Meeting with Constellation Energy Nuclear Group, LLC
Project stage: Meeting
ML13304B4032013-11-0101 November 2013
Notice of Forthcoming Meeting with Constellation Energy Nuclear Group, LLC,
Project stage: Meeting
ML13319A9392013-11-13013 November 2013
Ri GSI-191 November 2013 Meeting with NRC Rev 0
Project stage: Request
ML13310B9292013-12-0606 December 2013
Summary of Meeting with Constellation Energy Group, Inc., to Continue Discussions on the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During ...
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ML14014A0392014-01-29029 January 2014
Summary of Meeting with Constellation Energy Group, Inc., to Continue Discussions on the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During..
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ML14206B0012014-02-14014 February 2014
Long-Term Chemical Effects Autoclave Experiment Test Plan for Calvert Cliffs Nuclear Power Plant. CCNP-CHLE-011, Revision 2
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ML14142A3232014-05-22022 May 2014
NRR E-mail Capture - Calvert Cliffs May 21, 2014 Public Meeting Presentation
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Conrete Bench-Top Autoclave Experiment Test Plan for Calvert Cliffs Nuclear Power Plant. CCNPP-CHLE-010, Revision 1
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ML14206B1442014-11-0606 November 2014
May 21, 2014 Summary of Meeting with Exelon Generation Company, LLC, to Continue Discussions on the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02
Project stage: Meeting
ML14206A2062014-11-0707 November 2014
July 2, 2014 Summary of Meeting with Exelon Generation Company, LLC to Continue Discussions on the Proposed Risk-Informed Approach to the Resolution of Generic Letter 2004-02
Project stage: Meeting
ML15154B5572015-06-17017 June 2015
May 19, 2015 Summary of Meeting with Exelon Generation Company, LLC, on Calvert Cliffs Nuclear Power Plant, Units 1 and 2 - Chemical Effects Testing for Resolution of Generic Letter 2004-02 (TAC Nos. MC4672 & MC4673)
Project stage: Meeting
ML15222A5472015-08-31031 August 2015
GSI 191 Program Chemical Effects Testing Update Option 2b Closure Approach
Project stage: Request
2013-11-01
[Table View] |
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Category:Meeting Briefing Package/Handouts
MONTHYEARML24137A1882024-05-16016 May 2024
Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - NRC Presentation Slides
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Meeting Slides - Preapplication with Constellation on Planned Fleet Alternative Request to Adopt OMN-2
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Slides - Constellation - Pre-Application Regarding Hooded Masks 4/9/2024 Meeting Slides (L-2024-LLM-0041)
ML24029A1742024-01-30030 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
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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
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Slides for Presubmittial Meeting for Proposed Alternative to Adopt ASME Code Case N-921 to Extend the Inservice Inspection Interval
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Joint Annual Assessment for Pa/Md/Nj/Ny Nuclear Power Plants - Webinar Presentation (Updated)
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Spent Fuel Pool Cooling - Shutdown Cooling Licensing Design Basis License Amendment Request Pre-Submittal Meeting
ML21134A0162021-05-24024 May 2021
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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
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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)
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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
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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
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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
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ML19022A2002019-01-23023 January 2019
Request for Use of ASME Code Case N-879 for Exelon Nuclear Power Plants
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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
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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
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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
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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
2024-05-16
[Table view]
Category:Slides and Viewgraphs
MONTHYEARML24137A1882024-05-16016 May 2024
Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - NRC Presentation Slides
ML24100A7672024-04-11011 April 2024
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Slides - Constellation - Pre-Application Regarding Hooded Masks 4/9/2024 Meeting Slides (L-2024-LLM-0041)
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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
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2024-05-16
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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
