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| | number = ML13023A412 | | | number = ML13023A412 |
| | issue date = 01/23/2013 | | | issue date = 01/23/2013 |
| | title = 01/23/13 Slides for Meeting with Tennessee Valley Authority Tpbar Loading Increase LAR Pre‐, Submittal Meeting Watts Bar Nuclear Plant, Unit 1 | | | title = Slides for Meeting with Tennessee Valley Authority Tpbar Loading Increase LAR Pre‐, Submittal Meeting Watts Bar Nuclear Plant, Unit 1 |
| | author name = | | | author name = |
| | author affiliation = Tennessee Valley Authority | | | author affiliation = Tennessee Valley Authority |
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| | document type = Meeting Briefing Package/Handouts, Slides and Viewgraphs | | | document type = Meeting Briefing Package/Handouts, Slides and Viewgraphs |
| | page count = 22 | | | page count = 22 |
| | | project = |
| | | stage = Meeting |
| }} | | }} |
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| * Xenon Free PostLOCA - RSAC Item 3.16B PreLOCA Cb PostLOCA Cb Limit Margin (ppm) (ppm) (ppm) (ppm) | | * Xenon Free PostLOCA - RSAC Item 3.16B PreLOCA Cb PostLOCA Cb Limit Margin (ppm) (ppm) (ppm) (ppm) |
| HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2176 285 1696 TPBARs 953 2170 2178 8 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBAR TPBARs 736 2006 2148 142 | | HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2176 285 1696 TPBARs 953 2170 2178 8 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBAR TPBARs 736 2006 2148 142 |
| *
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| == Conclusion:== | | == Conclusion:== |
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| HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2009 118 1696 TPBARs 953 2170 2012 158 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBARs - 736 2006 1966 40 50% Leach (Max) 1696 TPBAR TPBARs - | | HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2009 118 1696 TPBARs 953 2170 2012 158 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBARs - 736 2006 1966 40 50% Leach (Max) 1696 TPBAR TPBARs - |
| 3% Leach (Time 736 1897 1966 69 Dependent) | | 3% Leach (Time 736 1897 1966 69 Dependent) |
| *
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| == Conclusion:== | | == Conclusion:== |
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| * ColdLegg Recirculation - RSAC Item 3.11B PreLOCA Cb PostLOCA Cb Limit Margin (ppm) (ppm) (ppm) (ppm) | | * ColdLegg Recirculation - RSAC Item 3.11B PreLOCA Cb PostLOCA Cb Limit Margin (ppm) (ppm) (ppm) (ppm) |
| HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2115 224 1696 TPBARs 953 2170 2119 52 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBAR 735 2006 2064 58 | | HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2115 224 1696 TPBARs 953 2170 2119 52 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBAR 735 2006 2064 58 |
| *
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| == Conclusion:== | | == Conclusion:== |
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| HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 0.939349 0.968402 0.982261 1696 TPBARs 953 0.964008 0.990343 1.007126 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBARs - 736 0.955894 0.985144 1.005015 50% Leach (Max) 1696 TPBARs - | | HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 0.939349 0.968402 0.982261 1696 TPBARs 953 0.964008 0.990343 1.007126 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBARs - 736 0.955894 0.985144 1.005015 50% Leach (Max) 1696 TPBARs - |
| 3% Leach (Time 736 0.948534 0.977298 0.996649 Dependent) | | 3% Leach (Time 736 0.948534 0.977298 0.996649 Dependent) |
| *
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| == Conclusion:== | | == Conclusion:== |
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Category:Meeting Briefing Package/Handouts
MONTHYEARML24228A2312024-08-15015 August 2024 TVA Meeting Slides for August 19 Public Meeting Re QAPD Supplement ML24225A2542024-08-14014 August 2024 August 14, 2024 - TVA Pre-Sub Meeting Presentation - Sequoyah, Units 1 and 2; Watts Bar, Units 1 and 2 - License Amendment Request to Revise TS 3.5.2 ECCS - Operating ML24137A2872024-05-16016 May 2024 Pre-Submittal Meetingfor Proposed License Amendment Request for Adoption of Technical Specification Task Force Traveler TSTF-276-A, Revision 2, Regarding TS 3.8.1 AC Sources - Operating to Clarify Requirements for Diesel Generator Testing ML24127A0412024-05-0606 May 2024 May 6, 2024 Meeting Slides ML23291A1562023-10-18018 October 2023 NRC Pre-Submittal Meeting Watts Bar & Sequoyah LAR, TVA Presentation Slides ML23264A0412023-09-27027 September 2023 NRC Pre-Submittal Meeting WBN Rebaseline LAR, TVA Presentation Slides ML23251A1252023-09-12012 September 2023 Pre-submittal Meeting for License Amendment Request, Modify the Watts Bar Nuclear Plant Unit 1 and Unit 2 Technical Specification Surveillance Requirement 3.9.5.1 ML23251A1212023-09-12012 September 2023 RHR Flow Rate Reduction During Mode 6 Operation at 23 Ft. Refueling Water Level Technical Specification Change NON-PROPRIETARY Slides ML23178A0832023-07-10010 July 2023 Pre-submittal Meeting Slides for License Amendment Request to Revise Technical Specification Table 1.1-1 Regarding the Required Number of Fully Tensioned Reactor Pressure Vessel Head Closure Studs ML23128A2882023-05-0808 May 2023 TVA Nuclear Plants -2022 EOC Media Slides ML23052A0362023-02-22022 February 2023 February 22, 2023, Pre-Submittal Meeting for the License Amendment Request for Increased Tritium Production at Watts Bar (EPID L-2023-LRM-0010) - Meeting Slides ML23041A3562023-02-15015 February 2023 February 15, 2023 Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension (EPID L-2022-LRM-0098) (Slides) ML23044A5182023-02-15015 February 2023 Pre-Submittal Meeting Slides for Expedited License Amendment Request Re Main Control Room Chiller Completion Time Extension ML22318A1042022-11-14014 November 2022 Pre-submittal Meeting for American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Request for Alternative WBN-2-ISI-01 Slide Presentation ML22157A4132022-06-0606 June 2022 Plants - Pre-Submittal Teleconference for Proposed Amendment Request Regarding the Change for the Sequoyah and Watts Bar Nuclear Plants Technical Specification 3.4.12 Meeting Slides ML22102A3032022-04-12012 April 2022 Pre-submittal Meeting for Request for Exemption from Requirements of 10 CFR 26.205(d)(4) and 10 CFR 26.205(d)(6) Slide Presentation ML22080A1662022-03-21021 March 2022 TVA Nuclear Plants -2021 EOC Media Loop Slides for Automatic Play ML21343A0282021-12-14014 December 2021 TVA Slide Presentation Regarding Pre-Submittal Meeting for Proposed Revision to Capsule Withdrawal Schedule ML21281A2282021-10-13013 October 2021 Tennessee Valley Authority Fleet Pre-Submittal Meeting for License Amendment Request to Change Emergency Action Level Scheme Presentation - October 13, 2021 (EPID L-2021-LRM-0096) (Slides) ML21250A3652021-09-0808 September 2021 Meeting Slides - Watts Bar Nuclear Plant Unit 2, Presubmittal Teleconference for Proposed License Amendment to Revise the Updated Final Safety Analyses Report (UFSAR) to Use a Tube Support Plate Locking/Displacement Analysis ML21229A1992021-08-19019 August 2021 Mid-Cycle SG Outage Strategy (EPID L-2021-LRM-0067) (Slides) ML21217A2872021-08-19019 August 2021 TVA Slides - Pre-Submittal Meeting for Proposed License Amendment Request Re Application to Modify Technical Specification 3.7.8 Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board ML21231A0972021-08-18018 August 2021 TVA Slides - Pre-Submittal Meeting for Proposed LAR Regarding Application to Modify Watts Bar Units 1 and 2 Technical Specification 3.7.8, Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board Cleaning ML21117A0722021-04-27027 April 2021 Meeting Slides for April 28, 2021 Meeting with TVA ML21096A1312021-04-0707 April 2021 Pre-submittal Meeting for Inservice Testing (IST) Program Request for One-Time Extension of Test Frequency of WBN Unit 1 Group 6 Relief Valves ML21041A1552021-02-11011 February 2021 Meeting Slides for February 11, 2021 Meeting with TVA ML20345A0262020-12-10010 December 2020 Replacement Steam Generator Project Planned License Amendment Request (Lars). LAR Descriptions and Submittal Schedule Meeting Slides ML20329A3722020-11-24024 November 2020 Pre-Submittal Teleconference for Proposed License Amendment Request Regarding Technical Specification 5.9.9, Steam Generator Tube Inspection Report, to Use Popcd Methodology ML20302A1232020-10-28028 October 2020 Pre-Submittal Meeting Slides Non-Voluntary Application to Modify WBN Unit 1 and Unit 2 TS Surveillance Requirement 3.6.15.4, Shield Building ML20239A8672020-08-27027 August 2020 Pre-Submittal Meeting Slides License Amendment Request for Technical Specification 5.7.2.19 ML20175A0552020-06-23023 June 2020 TVA Slides for June 23, 2020, Emergency Plan Change Presubmittal Meeting ML20125A3242020-05-0505 May 2020 Pre-Submittal Meeting Slides for License Amendment Request - Main Control Room Chiller Completion Time Extension ML20049G1822020-02-18018 February 2020 February 20, 2020 - Pre-submittal Meeting Presentation - Transition to Westinghouse Fuel ML20009C3962020-01-0808 January 2020 Pre-Submittal Telecon for Expedited License Amendment Request to Revise Technical Specification 3.3.5, LOP DG Start Instrumentation ML19347B0722019-12-12012 December 2019 TVA and Xcel Energy Slides for Joint Presubmittal Meeting to License Amendment Requests to Adopt WCAP-17661, Revision 1 ML19282A0082019-10-0909 October 2019 TVA Slides for Pre-Submittal Meeting for License Amendment Request to Correct Unbalanced Voltage Relay Instrumentation Values ML19255H5522019-09-12012 September 2019 August 27, 2019, Summary of Public Meeting - Tennessee Valley Safety Conscious Work Environment Update at Watts Bar, Docket 50-390 and 50-391 ML19298A0042019-09-12012 September 2019 Presentation Slides for 9/12/19 Public Meeting ML19252A0532019-09-0909 September 2019 TVA Presentation Slides: Watts Bar Nuclear Plant Pre-Submittal Meeting for License Amendment Request Revised Offsite Electrical Power Sources ML19235A2712019-08-23023 August 2019 2019 TVA Watts Bar Nuclear Plant Public Meeting Slides 08-27-2019 (TVA Slides) ML19235A2882019-08-23023 August 2019 2019 WBN SCWE Public Meeting Slides 8-27-2019 (NRC Slides) ML19178A2462019-07-0101 July 2019 Presentation Material for July 1, 2019 Pre-submittal Meeting with TVA on Full Spectrum LOCA Methodology for Watts Bar, Units 1 and 2 ML19161A2412019-06-11011 June 2019 Pre-Application Meeting for Proposed License Amendment Request (LAR) Regarding Change to the WBN Unit 2 Technical Specifications (TS) 3.4.17, Steam Generator Tube Integrity and 5.7.2.12 Steam Generator Program ML19161A2392019-06-10010 June 2019 Plants Pre-Submittal Meeting for Proposed License Amendments Hydrological Analysis Updates June 10, 2019 ML19142A3602019-05-21021 May 2019 May 9, 2019 Summary of Public Meeting; Watts Bar Nuclear Plant ML19018A0072019-01-18018 January 2019 (WBN)Pre-Submittal Meeting for Proposed License Amendment Request Regarding a One-Time Change for the WBN Unit 2 Technical Specification (TS) 3.7.8, Essential Raw Cooling Water (ERCW) System. ML18291A5732018-10-18018 October 2018 Chilled Work Environment ML18291A5632018-10-18018 October 2018 Chilled Worked Environment Update ML18248A1022018-09-0505 September 2018 Presentation Slides - Watts Bar Nuclear Plant (WBN) Pre-Submittal Meeting for Proposed License Amendment Request Regarding Shutdown Board Cleaning - September 6, 2018 ML18248A1052018-09-0505 September 2018 Presentation Slides - Watts Bar Nuclear Plant Units 1 and 2 Adoption of TSTF-425 Initiative 5b - Surveillance Frequency Control Program - September 6, 2018 2024-08-15
[Table view] Category:Slides and Viewgraphs
MONTHYEARML24228A2312024-08-15015 August 2024 TVA Meeting Slides for August 19 Public Meeting Re QAPD Supplement ML24225A2542024-08-14014 August 2024 August 14, 2024 - TVA Pre-Sub Meeting Presentation - Sequoyah, Units 1 and 2; Watts Bar, Units 1 and 2 - License Amendment Request to Revise TS 3.5.2 ECCS - Operating ML24184B9162024-07-10010 July 2024 U.S. NRC Meeting Slides for Meeting with Tennessee Valley Authority Regarding NRC Questions Regarding Scope of Nuclear Quality Assurance Program ML24137A2872024-05-16016 May 2024 Pre-Submittal Meetingfor Proposed License Amendment Request for Adoption of Technical Specification Task Force Traveler TSTF-276-A, Revision 2, Regarding TS 3.8.1 AC Sources - Operating to Clarify Requirements for Diesel Generator Testing ML24127A0412024-05-0606 May 2024 May 6, 2024 Meeting Slides ML23291A1562023-10-18018 October 2023 NRC Pre-Submittal Meeting Watts Bar & Sequoyah LAR, TVA Presentation Slides ML23264A0412023-09-27027 September 2023 NRC Pre-Submittal Meeting WBN Rebaseline LAR, TVA Presentation Slides ML23251A1212023-09-12012 September 2023 RHR Flow Rate Reduction During Mode 6 Operation at 23 Ft. Refueling Water Level Technical Specification Change NON-PROPRIETARY Slides ML23251A1252023-09-12012 September 2023 Pre-submittal Meeting for License Amendment Request, Modify the Watts Bar Nuclear Plant Unit 1 and Unit 2 Technical Specification Surveillance Requirement 3.9.5.1 ML23178A0832023-07-10010 July 2023 Pre-submittal Meeting Slides for License Amendment Request to Revise Technical Specification Table 1.1-1 Regarding the Required Number of Fully Tensioned Reactor Pressure Vessel Head Closure Studs ML23128A2882023-05-0808 May 2023 TVA Nuclear Plants -2022 EOC Media Slides ML23052A0362023-02-22022 February 2023 February 22, 2023, Pre-Submittal Meeting for the License Amendment Request for Increased Tritium Production at Watts Bar (EPID L-2023-LRM-0010) - Meeting Slides ML23044A5182023-02-15015 February 2023 Pre-Submittal Meeting Slides for Expedited License Amendment Request Re Main Control Room Chiller Completion Time Extension ML23041A3562023-02-15015 February 2023 February 15, 2023 Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension (EPID L-2022-LRM-0098) (Slides) ML23010A2542023-01-12012 January 2023 Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension -- Meeting Slides ML22318A1042022-11-14014 November 2022 Pre-submittal Meeting for American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Request for Alternative WBN-2-ISI-01 Slide Presentation ML22157A4132022-06-0606 June 2022 Plants - Pre-Submittal Teleconference for Proposed Amendment Request Regarding the Change for the Sequoyah and Watts Bar Nuclear Plants Technical Specification 3.4.12 Meeting Slides ML22103A0852022-04-14014 April 2022 and Watts Bar Plant Pre-submittal Meeting for Inservice Testing (IST) Program Request for Alternative for the Motor Driven Auxiliary Feedwater Pump Testing Following Maintenance During an Outage Per ISTB-3310 ML22102A3032022-04-12012 April 2022 Pre-submittal Meeting for Request for Exemption from Requirements of 10 CFR 26.205(d)(4) and 10 CFR 26.205(d)(6) Slide Presentation ML22080A1662022-03-21021 March 2022 TVA Nuclear Plants -2021 EOC Media Loop Slides for Automatic Play ML22035A0002022-02-0404 February 2022 February 8, 2022, Pre-Submittal Meeting Slides Regarding Proposed Change to Modify the Allowable Value for Technical Specification Table 3.3.2-1, Function 6.e(1) ML22013A6432022-01-19019 January 2022 TVA Slides - Watts Bar Nuclear Plant (WBN) Schedule for the Development of a License Amendment Request (LAR) for Increased Tritium Production at WBN ML21343A0282021-12-14014 December 2021 TVA Slide Presentation Regarding Pre-Submittal Meeting for Proposed Revision to Capsule Withdrawal Schedule ML21281A2282021-10-13013 October 2021 Tennessee Valley Authority Fleet Pre-Submittal Meeting for License Amendment Request to Change Emergency Action Level Scheme Presentation - October 13, 2021 (EPID L-2021-LRM-0096) (Slides) ML21250A3652021-09-0808 September 2021 Meeting Slides - Watts Bar Nuclear Plant Unit 2, Presubmittal Teleconference for Proposed License Amendment to Revise the Updated Final Safety Analyses Report (UFSAR) to Use a Tube Support Plate Locking/Displacement Analysis ML21229A1992021-08-19019 August 2021 Mid-Cycle SG Outage Strategy (EPID L-2021-LRM-0067) (Slides) ML21217A2872021-08-19019 August 2021 TVA Slides - Pre-Submittal Meeting for Proposed License Amendment Request Re Application to Modify Technical Specification 3.7.8 Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board ML21231A0972021-08-18018 August 2021 TVA Slides - Pre-Submittal Meeting for Proposed LAR Regarding Application to Modify Watts Bar Units 1 and 2 Technical Specification 3.7.8, Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board Cleaning ML21096A1312021-04-0707 April 2021 Pre-submittal Meeting for Inservice Testing (IST) Program Request for One-Time Extension of Test Frequency of WBN Unit 1 Group 6 Relief Valves ML21096A1002021-04-0606 April 2021 Annual Assessments ML21041A1552021-02-11011 February 2021 Meeting Slides for February 11, 2021 Meeting with TVA ML21019A5692021-01-19019 January 2021 Pre-Submittal Teleconference for Proposed License Amendment Requests (Lars) for the WBN Unit 2 Replacement Steam Generator (RSG) Project ML20352A0362020-12-17017 December 2020 Pre-Submittal Teleconference for Proposed License Amendment to Revise the Updated Final Safety Analysis Report (UFSAR) to Use an Alternate Probability of Detection (POD) ML20329A3722020-11-24024 November 2020 Pre-Submittal Teleconference for Proposed License Amendment Request Regarding Technical Specification 5.9.9, Steam Generator Tube Inspection Report, to Use Popcd Methodology ML21050A1562020-10-21021 October 2020 Graizer - Presentation - Analysis of Tva'S Watts Bar Nuclear Power Plant Strong-Motion Records of the M 4.4 December 12, 2018 Decatur Tennessee Earthquake ML20239A8672020-08-27027 August 2020 Pre-Submittal Meeting Slides License Amendment Request for Technical Specification 5.7.2.19 ML20220A2022020-08-0707 August 2020 Pre-Submittal Meeting Slides - Proposed License Approach Regarding a Change for Watts Bar Nuclear Plant Units 1 & 2 Technical Specification 3.3.2 Table 1 Function 6.e Auxiliary Feedwater Auto-Start from Loss of Main Feedwater Pumps(Epid L-2 ML20209A0702020-07-27027 July 2020 Pre-submittal Meeting for Inservice Testing (IST) Program Request for Relief from Increased Frequency Testing of Residual Heat Removal (RHR) Pump 1B-B Meeting Slides ML20169A5222020-06-25025 June 2020 Pre-Submittal Meeting for License Amendment Request (LAR) Revised Steam Generator (SG) Inspection Intervals and TSTF-510 ML20175A0552020-06-23023 June 2020 TVA Slides for June 23, 2020, Emergency Plan Change Presubmittal Meeting ML20148M1452020-05-27027 May 2020 (Wbn)Proposed License Approach Regarding a Change for the WBN Units 1& 2 Technical Specification (TS) 3.3.2 Table 1 Function 6.e Auxiliary Feedwater Auto-Start from Loss of Main Feedwater Pumps ML20147A0132020-05-26026 May 2020 NRC Slides Final WBN-1 TS 3.3.3 LAR ML20134J0102020-05-14014 May 2020 Pre-Submittal Meeting for License Amendment Request Technical Specification 5.9.6 Add NRC-approved Neutron Fluence Calculational Methodology ML20125A3242020-05-0505 May 2020 Pre-Submittal Meeting Slides for License Amendment Request - Main Control Room Chiller Completion Time Extension ML20112F5302020-04-21021 April 2020 TVA Nuclear Plants -2019 EOC Media Loop Slides for Automatic Play (Final) ML20049G1822020-02-18018 February 2020 February 20, 2020 - Pre-submittal Meeting Presentation - Transition to Westinghouse Fuel ML20009C3962020-01-0808 January 2020 Pre-Submittal Telecon for Expedited License Amendment Request to Revise Technical Specification 3.3.5, LOP DG Start Instrumentation ML19282A0082019-10-0909 October 2019 TVA Slides for Pre-Submittal Meeting for License Amendment Request to Correct Unbalanced Voltage Relay Instrumentation Values ML19255H5522019-09-12012 September 2019 August 27, 2019, Summary of Public Meeting - Tennessee Valley Safety Conscious Work Environment Update at Watts Bar, Docket 50-390 and 50-391 ML19298A0042019-09-12012 September 2019 Presentation Slides for 9/12/19 Public Meeting 2024-08-15
[Table view] |
Text
Watts Bar TPBAR Loading Increase LAR PreSubmittal Meetingg N l Nuclear January 23, 2013
Agenda g
N l Nuclear
- IIntroduction d i TTerry Cribbe C ibb
- Background Mark Burzynski
- DOE TPBAR Loading Plans Curtis Chambellan
- Tritium Permeation Experience Larry Bagaasen
- Projected j Pathwayy Exposures p Mark Burzynski y
- Plant Modifications Jeff McGuire
- Licensing Activities Mark Burzynski
- Licensing Activities Schedule Terry Cribbe
- Closing Comments Terry Cribbe 2
Introduction N l Nuclear
- Update NRC Management on TVAs Plan to Submit a License Amendment Request q (LAR)
( ) in June 2013 to Increase Allowable TPBAR Loading for Watts Bar Unit 1 3
Background
g N l Nuclear
- License Amendment 40 Issued on September 23, 2002 Authorized Loading Up to 2304 TPBARs
- TVA Letter Dated March 22, 2005 Notified NRC of Interim Cumulative TPBAR Tritium Release Limits
- While Higher than Projected Permeation Rates were Investigated
- License Amendment 77 Issued on May 4, 2009 Authorized Loading Up to 704 TPBARs 4
DOE TPBAR Loadingg Plans N l Nuclear
- DOE TPBAR Loading Plans for Watts Bar Unit 1:
Cycle Date TPBAR Loading Tech Spec Limit C11 April 2011 544 704 C12 October 2012 544 704 C13 April 2014 544704 704 C14 October 2015 11041024 1696*
C15 April 2017 15041424 1696*
C16 October 2018 1696 1696*
Tritium Permeation N l Nuclear Experience (1/2)
- TVA and PNNL Performed Surveillance Of Estimated Tritium Permeation Over Last 6 Cyclesy of TPBAR Irradiation for the Tritium Readiness Program.
- Permeation Was Higher than Original Design Goal, But No Design or Production Flaws Have Been Identified.
Uncertainty U t i t bars b
represent 90%
confidence interval 6
Tritium Permeation N l Nuclear Experience (2/2)
- Original Functional Requirement for TPBAR Tritium Permeation in Cycle 6 was an Average of 1 Ci/TPBAR/Year.
- Proposed Management Strategy Assumes TPBAR Tritium Permeation will be 5.0 Ci/TPBAR/year.
Ci/TPBAR/year
Projected j Pathwayy Exposure p (1/2)
( )
N l Nuclear
- FSAR Chapter 11 Radiological Consequence Analyses Will Be Based on:
- Release Source Term Based on NRC NUREG0017 Methodology to Calculate an Average Maximum Hypothetical Release
- TPBAR Loading of 1700 TPBARs
- TPBAR Tritium Permeation Rate of 5 Curies/TPBAR/Year (Based on Conservative Upper Bound of Plant Data)
- Use of TVA QA Computer Codes GELC and QWATA to Calculate Dose to Maximum Exposed Offsite Individual 8
Projected j Pathwayy Exposure p (2/2)
( )
N l Nuclear
- Projected Pathway Exposures to Maximum Hypothetical Individual Remain Below NRC Regulatory Limits for All Cases.
Pathways Preliminary Projected Doses Liquid (Realistic) 0.75 mrem Total Body Liquid (Design) 0.81 mrem Total Body 1 29 mrem Total Body 1.29 Gaseous (Realistic) 10.86 mrem Critical Organ 1.29 mrem Total Body Gaseous (Design)
( es g )
11.34 mrem Critical Organ
- Applicable NRC Requirements (10 CFR Part 20 and 10 CFR Part P t 50 Appendix A di I) and d TTechnical h i l SSpecifications ifi ti Will Be Met for All Cases.
9
Plant Modifications ((1/2))
N l Nuclear
- Addition of 500,000 Gallon Tritiated Water Tank System
- Increase Flexibility to Manage RCS Feed and Bleed Under Contingency Scenarios and Time Effluent Releases to Environment
- Allows Changes to Operating Strategy for RCS Feed and Bleed to Keep Tritium Concentrations Low and Simplify Occupational Exposure Controls
- Implemented under 10 CFR 50.59 10
Plant Modifications ((2/2))
N l Nuclear
- Replace Check Valves Used for Thermal Relief on ERCW Supply Lines with relief Valves
- Eliminates PostLOCA Manual Operator Actions for Isolation Previously Approved by NRC in License Amendment Issued on March 29, 2004
- Eliminates 40 GPM Source of Unborated Water Leakage into Containment (Assumed for 16 Hours)
- Implemented I l d under d 10 CFR 50.59 50 59 11
Licensingg Activities N l Nuclear
- Update Letter Removing Interim Limit on Tritium Releases Attributed to TPBARs (Update to March 22, 2005 Letter)
- Return to Normal Effluent Controls of 10 CFR Part 20, 100 CFR Part 50 0 Appendix di I, and d Technical h i l Specifications S ifi i
- Would Include General Discussion of Expected Effluent Releases for 704 TPBARs
- License Amendment Request for 1696 TPBARs
- Update of PostLOCA Reactivity Analysis Previously Approved by NRC for License Amendment 77
- Would Include Discussion of Expected Effluent Releases (Using Realistic Source Term) and Radwaste System D i and Design d St Station ti DDose (Using (U i DDesign i BBasis i Source S
Term) for 1696 TPBARs 12
PostLOCA Shutdown N l Nuclear Margin Analysis (1/5)
- PostLOCA Reactivity Analysis will Be Consistent with ith Previously P i l Approved A d by b NRC ffor License Li Amendment 77 with the Following Key Changes:
- Elimination of Dilution of Sump Water from 40 GPM Unborated Water InLeakage
- Reduce Required RCS Boron Concentration by Increased IFBA Loading
- Modification of Simplified Assumptions on TPBAR Lithium Leaching at Time of Hot Leg Switchover Switchover.
- Time Dependent Leaching Rate Used
PostLOCA Shutdown N l Nuclear Margin Analysis (2/5)
- Xenon Free PostLOCA - RSAC Item 3.16B PreLOCA Cb PostLOCA Cb Limit Margin (ppm) (ppm) (ppm) (ppm)
HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2176 285 1696 TPBARs 953 2170 2178 8 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBAR TPBARs 736 2006 2148 142
Conclusion:
900 pp ppm core with 1696 TPBARs can accommodate cycle variations Preliminary Results 14
PostLOCA Shutdown N l Nuclear Margin Analysis (3/5)
- Hot Legg Switchover - RSAC Item 3.16A PreLOCA Cb PostLOCA Cb Limit Margin (ppm) (ppm) (ppm) (ppm)
HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2009 118 1696 TPBARs 953 2170 2012 158 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBARs - 736 2006 1966 40 50% Leach (Max) 1696 TPBAR TPBARs -
3% Leach (Time 736 1897 1966 69 Dependent)
Conclusion:
1696 TPBAR core at 900 ppm with time dependent leach rate meets requirements.
Preliminary Results 15
PostLOCA Shutdown N l Nuclear Margin Analysis (4/5)
- ColdLegg Recirculation - RSAC Item 3.11B PreLOCA Cb PostLOCA Cb Limit Margin (ppm) (ppm) (ppm) (ppm)
HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 1891 2115 224 1696 TPBARs 953 2170 2119 52 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBAR 735 2006 2064 58
Conclusion:
1696 TPBARs,, 900 pp ppm core meets requirements.
Preliminary Results 16
PostLOCA Shutdown N l Nuclear Margin Analysis (5/5)
(Keff)
HFP EQXE Cb = 1200 ppm (less IFBA) 544 TPBARs 937 0.939349 0.968402 0.982261 1696 TPBARs 953 0.964008 0.990343 1.007126 HFP EQXE Cb = 900 ppm (more IFBA) 1696 TPBARs - 736 0.955894 0.985144 1.005015 50% Leach (Max) 1696 TPBARs -
3% Leach (Time 736 0.948534 0.977298 0.996649 Dependent)
Conclusion:
1696 TPBAR core at 900 ppm with time dependent leach rate meets requirements.
Preliminary Results 17
Licensingg Activities Schedule N l Nuclear 18
Closingg N l Nuclear
- TVA Will Submit a License Amendment Request f 1696 TPBAR for TPBARs iin JuneJ 2013
- Supporting Analyses will Bound Operating E
Experience i with i h TTritium ii P Permeation i
- Supporting Analyses will Reflect Plant Modifications M d to Made t IIncrease MMargins i
- All Regulatory Requirements and Plant Technical Specifications will be met with 1696 TPBAR Core Design 19
N l Nuclear Questions 20
N l Nuclear Backup Slides 21
TPBAR Leaching Test N l Nuclear
- Leachingg Results from Dynamic y Leachingg Test on an Irradiated TPBAR Section Hot Leg Switchover 1