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MONTHYEARML17265A8092017-09-26026 September 2017
Meeting Slide for Watts Bar Unit 2, Tritium Production License Amendment Pre-Application Meeting
Project stage: Meeting
ML17265A8242017-09-26026 September 2017
Meeting Slide Regarding Watts Bar Unit 2, Tritium Production License Amendment Pre-Application Meeting Spent Fuel Pool Criticality Analysis
Project stage: Meeting
ML17297A0442017-10-26026 October 2017
Summary of September 26, 2017, Presubmittal Meeting with Tennessee Valley Authority Regarding Pending License Amendment Request to Load Tritium Producing Burnable Absorber Rods
Project stage: Meeting
2017-10-26
[Table View] |
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Category:Slides and Viewgraphs
MONTHYEARML23291A1562023-10-18018 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
ML19298A0042019-09-12012 September 2019
Presentation Slides for 9/12/19 Public Meeting
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
ML19252A0532019-09-0909 September 2019
TVA Presentation Slides: Watts Bar Nuclear Plant Pre-Submittal Meeting for License Amendment Request Revised Offsite Electrical Power Sources
ML19252A0522019-09-0909 September 2019
TVA Presentation Slides: Watts Bar Nuclear Plant (WBN) Application to Modify WBN Unit 1 and Unit 2 Technical Specification (TS) 3.6.15, Shield Building - September 11, 2019
ML19235A2712019-08-23023 August 2019
2019 TVA Watts Bar Nuclear Plant Public Meeting Slides 08-27-2019 (TVA Slides)
ML19197A0932019-07-16016 July 2019
Presentation Slides - Watts Bar Nuclear Plant (WBN) Unit 2, Pre-Submittal Meeting for License Amendment Request Measurement Uncertainty Recapture (Mur) Power Update
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
2023-09-27
[Table view] |
Text
Watts Bar Unit 2 Tritium Production License Amendment Pre-Application Meeting Spent Fuel Pool Criticality Analysis Z. I. Martin September 26, 2017
Agenda Introduction and Background Overview of Current Analysis Overview of New Analysis Technical Specification Changes Neutron Absorber Material Monitoring Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 2
Introduction and Background Watts Bar (WBN) Spent Fuel Pool (SFP)
Racks WBN SFP contains a single type of BORALTM racks containing flux traps Installed in WBN SFP in 1997 Originally resided in Sequoyah Nuclear Plant (SQN)
SFP from 1980-1995 Original design had seal welded cavity for BORALTM BORALTM cavity vented during WBN installation No monitoring program required at time of licensing (either at SQN or WBN)
Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 3
Overview of Current Analysis Performed by Holtec in 2000 using Kopp guidance SFP Criticality Analysis credits Storage cell spacing, i.e., flux traps between storage cells Fixed neutron absorbers: BORALTM panels Burnup using Burnup - Enrichment Curves
- Addressed TPBARs in depletion analysis Integral Fuel Burnable Absorber (IFBA) in New Fuel Administrative Controls (Loading Patterns)
Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 4
Overview of New Analysis (1/2)
Performed by Holtec Follows ISG 2010-01 and NEI 12-16 Guidance SFP Criticality Analysis credits Storage cell spacing, i.e., flux traps between storage cells Fixed neutron absorbers: BORALTM panels Soluble Boron (500ppm)
Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 5
Overview of New Analysis (2/2)
Criticality calculations qualify the BORALTM storage racks uniformly loaded with fresh fuel assemblies with an initial enrichment up to 5 wt%
235U Bounding fuel density of all types of fuel assemblies is considered Bounding approach provides analysis simplicity and adequate margin Neutron absorber monitoring program will be implemented following the NRC-approved guidance in NEI 16-03-A Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 6
Comparison of Current and Proposed New Analyses Proposed Parameter Current Analysis New Analysis Impact Burnup Credit Burnup versus Not used - Fresh Simplifies implementation enrichment curves fuel only by reduction of administrative controls IFBA Credit for Fresh Minimum number Not used Simplifies implementation Fuel of IFBA rods by reduction of required administrative controls Soluble Boron Credit Not Used 500 ppm Now credited at all times Boral' Monitoring None Propose to Increased ability to Program Implement determine material NEI 16-03-A performance Boral' Blister Not addressed Assumes void on Bounds Boral' blistering Impact every panel over entire panel surface Analytical Guidance Kopp Memo Consistent with Analysis consistent with guidance used DSS-ISG-2010-01 industry best practices and NEI 12-16 Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 7
Technical Specification Changes (1/2)
Proposed change revises the Units 1 and 2 TSs affected by the new spent fuel rack criticality analysis TS 3.7.15, Spent Fuel Assembly Storage, revised to simplify the fuel storage limitations on fuel assemblies by eliminating burnup-related criteria TS 3.7.18, Fuel Storage Pool Boron Concentration, added to specify minimum fuel storage pool boron concentration when fuel is stored in the pool TS 3.9.9, Spent Fuel Pool Boron Concentration, revised to modify the minimum fuel storage pool boron concentration during refueling operations when fuel is stored in the pool Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 8
Technical Specification Changes (2/2)
Proposed change revises the Units 1 and 2 TSs affected by the new spent fuel rack criticality analysis (continued)
TS 4.3, Fuel Storage, revised to replace the storage limitations on fuel assembly initial enrichment, burnup, and storage location limitations with a single requirement to maintain a specified boron concentration in the spent fuel pool TS 5.7.2.21, Spent Fuel Storage Rack Neutron Absorber Monitoring Program, added to incorporate the NRC-approved NEI 16-03-A guidance Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 9
Neutron Absorber Monitoring Program (1/4)
Current WBN Spent Fuel Storage Racks have never had Boral' coupons Monitoring industry OE including SQN and BFN Participating in Industry Groups Monitoring Fuel Movements for Issues Monitoring SFP chemistry pH Aluminum Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 10
Neutron Absorber Monitoring Program (2/4)
Future Implement Boral' Monitoring Program per NEI 16-03-A NEI 16-03-A Options In-situ testing (BADGER)
Coupon program Continue to monitor SFP chemistry Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 11
Neutron Absorber Monitoring Program (3/4)
Future (contd)
IF TVA decides on a coupon program, the following are issues to resolve Generate coupons from existing rack panels Harvest enough coupons for life of plant plus life extension Use rack periphery panel Circular coupons - approximately 4 inch diameter Pre-characterize coupons For 10B areal density use actual panel data (if available) or neutron attenuation testing Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 12
Neutron Absorber Monitoring Program (3/3)
Future (contd)
IF TVA decides on a coupon program, the following are issues to resolve (contd)
Place coupons on coupon tree in SFP Accelerate exposure Perform periodic Areal Density Measurements per NEI 16-03-A Re-insert coupons, when applicable Tritium Production License Amendment Pre-Application Meeting - Criticality l September 26, 2017 l 13
Watts Bar Unit 2 Tritium Production License Amendment Pre-Application Meeting Spent Fuel Pool Criticality Analysis Z. I. Martin September 26, 2017
