ML15198A424

Browns Ferry, Units 1, 2, and 3, Presentation Slides for Closed Meeting Extended Power Uprate (EPU) License Amendment Request (TAC Nos. MF4851, MF4852, and MF4853)

ML15198A424
Person / Time
Site:	Browns Ferry
Issue date:	07/08/2015
From:	Shea J W Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML15198A423	List: CNL-15-122, Presentation Slides for Closed Meeting Extended Power Uprate (EPU) License Amendment Request
References
CNL-15-122, TAC MF4851, TAC MF4852, TAC MF4853
Download: ML15198A424 (94)

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U.S. Nuclear Regulatory Commission CNIL-15-122 Pa9e 2 July 8, 2014 There are no new regulatory commitments contained in this submittal. Please address any questions regarding this submittal to Mr. Edward D. Schrull at (423) 751-3850. J. W. Shea Vice President, Nuclear Licensing Enclosures: 1. GEH Slides for TVA Presentation to the NRC in Support of Steam Dryer Replacement, GEH Proprietary Information (Enclosure 1 to GEH Letter No. 175528-011, Revision 1) 2. GEH Slides for TVA Presentation to the NRC in Support of Steam Dryer Replacement, Non-Proprietary Information (Enclosure 2 to GEH Letter No. 175528-011, Revision 1) 3. GEH Affidavit Supporting the Request to Withhold GEH Proprietary Information (included in Enclosure 1) from the Public (Enclosure 3 to GEH Letter No. 175528-011, Revision 1) 4. Supplemental GEH Slides for TVA Presentation to the NRC in Support of Steam Dryer Replacement, GEH Proprietary Information (Enclosure 1 to GEH Letter No. 175528-011, Revision 2) 5. Supplemental GEH Slides for TVA Presentation to the NRC in Support of Steam Dryer Replacement, Non-Proprietary Information (Enclosure 2 to GEH Letter No. 175528-011, Revision 2) 6. GEH Affidavit Supporting the Request to Withhold GEH Proprietary Information (included in Enclosure 4) from the Public (Enclosure 3 to GEH Letter No. 175528-011, Revision 2) cc (Enclosures): NRC Regional Administrator -Region II NRC Senior Resident Inspector -Browns Ferry Nuclear Plant NRC Project Manager -Browns Ferry Nuclear Plant

Non-Proprietary Information - Class I (Public) Introductions Overview and Background Browns Ferry Replacement Steam Dryer Design Browns Ferry Replacement Steam Dryer Analysis Browns Ferry Replacement Steam Dryer Power Ascension Monitoring Browns Ferry Replacement Steam Dryer Inspection Plan Questions/Comments G. Doyle G. Doyle P. Donahue P. Donahue P. Donahue P. Donahue G. Doyle Non-Proprietary Information - Class I (Public) New Replacement Steam Dryers (RSDs) will be installed in all three Browns Ferry Units To resolve any issues that existing steam dryers may have under EPU conditions Previous submittals, now withdrawn, had over 260 RAIs associated with steam dryers New EPU License Amendment Request (LAR) submittal will address previous issues , look to minimize RAIs, and support NRC approval Current strategy and design complies with existing and contemporary regulatory requirements Contracted with GEH to build our RSDs as they are the Original Equipment Manufacturer and have experience in other recent RSDs We are here to present an overview of our RSDs design, analysis, monitoring plan and inspection plan with an expectation that NRC fully understands the RSD information we plan to submit as part of our EPU LAR Presenter is Pete Donahue, Senior Manager for EPU Engineering Supported by GEH personnel Non-Proprietary Information - Class I (Public) Based on the curved hood six bank prototype replacement dryer first used in a BWR/4 reactor. Design is significantly more robust than the original steam dryer it replaces. BFN acoustic load definition developed using MSL acoustic pressure measurements taken at the three Browns Ferry units. The FIV fatigue evaluation and primary stress methodologies used for BFN RSD analysis has been reviewed in detail on BWR/6 RSD and ESBWR projects. Analyzed for the applicable primary structural loads for normal operation and for transient and accident conditions. Non-Proprietary Information - Class I (Public)

Successful operating history for replacement dryers at EPU Quad Cities Units 1/2 RSD Dresden Units 2/3 RSD Susquehanna Units 1/2 RSD Grand Gulf RSD Vermont Yankee original dryer with modifications Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) Based on the curved hood six bank prototype replacement dryer first used in a BWR/4 reactor. Design is significantly more robust than the original steam dryer it replaces. Both the Browns Ferry reactor vessel and the BWR/4 reactor vessel where the BWR/4 prototype RSD was installed have the same internal diameter; so in essence, [[ ]] Non-Proprietary Information - Class I (Public) Changes to prototype dryer design Dryer/vessel interface changes Address OE lessons learned Stress reduction [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public)

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The steam dryer is a non-safety related item and is classified as an Internal Structure as defined in ASME Subsection NG, Paragraph NG-1122. The steam dryer is not an ASME Code component, [[ ]] Non-Proprietary Information - Class I (Public) Load Case Service Conditions Operating Condition Load Combination [[ ]] BFN RSD Primary Stress Analysis Load Combinations Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public)

The BFN lead unit is classified as a [[ ]] Power ascension monitoring process similar to previous RSD projects BFN Lead Unit Both RSD and MSLs instrumented Monitor using strain gauges, on-dryer pressure transducers, and accelerometer Non-Proprietary Information - Class I (Public) BFN Lead Unit (continued) ]] Confirmatory structural analysis for lead unit at EPU [[ ]] Follow-on Units MSLs instrumented ]] Confirmatory structural evaluation based on MSL measurements [[ [[ Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) [[ ]] Non-Proprietary Information - Class I (Public) During the first two scheduled refueling outages after reaching EPU conditions, a visual inspection will be conducted on the replacement steam dryer for each unit. The inspection plan will be consistent with the industry guidance. The inspection plan will include all accessible exterior and interior critical locations identified in the vibration and stress analyses for the Browns Ferry RSDs. Non-Proprietary Information - Class I (Public)

Short Form Description ASME American Society of Mechanical Engineers ASR Alternating Stress Ratio AVS Acoustic Vibration Suppressor BFN Browns Ferry Nuclear Plant BWR Boiling Water Reactor CLTP Current Licensed Thermal Power DP Differential Pressure DW Deadweight EPU Extended Power Uprate FE Finite Element FEM Finite Element Model FIV Flow Induced Vibration FRF Frequency Response Function HF High Frequency IN Information Notice LAR License Amendment Request LF Low Frequency MASR Minimum alternating stress ratio Short Form Description MPC Multi Point Constraint MSL Main Steam Line MSLB Main Steam Line Break OBE Operating Basis Earthquake PBLE Plant Based Load Evaluation PBLE01 PBLE Input On-Dryer Based PBLE02 PBLE Input MSL Based PSD Power Spectral Density RMS Root-Mean-Squared RPV Reactor Pressure Vessel RSD Replacement Steam Dryer SDAR Steam Dryer Analysis Report SG Strain Gauge SRV Safety Relief Valve SSE Safe Shutdown Earthquake TSV Turbine Stop Valve VFD Variable Frequency Drive VPF Vane Passing Frequency Non-Proprietary Information - Class I (Public) Thank you! Questions? Comments?

[[ ]] Non-Proprietary Information - Class I (Public) BFN SDAR Report Format Main Body - BFN-Specific Analyses and Results Appendix A - Overall Dryer Analysis Methodology Appendix B - PBLE01 On-dryer Based Load Definition Model Description Appendix C - PBLE02 MSL-Based Load Definition Model Description Appendix D - Supporting BFN Analysis Inputs and Results Appendix E - Power Ascension Test Plan and Limit Curves Non-Proprietary Information - Class I (Public)

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