Letter Sequence Supplement |
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Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance, Acceptance, Acceptance, Acceptance
- Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement
Administration
- Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
Results
Other: BVY 06-014, E-mail, Meyer, Entergy, to Ennis, NRR, VY EPU, BVY 06-019, Vermont Yankee, Extended Power Uprate - Regulatory Commitment Information Regarding Steam Dryer Monitoring and Fiv Effects, BVY 06-031, Revision 1 to Steam Dryer Monitoring Plan, BVY 06-039, Vermont Yankee Nuclear Power Station Revision 2 to Steam Dryer Monitoring Plan, BVY 06-051, Vermont Yankee - Summary of Reactor Feedwater Pump Trip Analysis, BVY 06-056, Submittal of Vermont Yankee Report on the Results of Steam Dryer Monitoring, BVY 06-080, Vermont Yankee, Extended Power Uprate - License Amendment No. 229 Clarifications to Nrc'S Final Safety Evaluation, BVY 06-087, Update to Information Related to 10CFR50.63 Licensing Basis, ML033140025, ML033160187, ML040080573, ML040090411, ML041810022, ML041810433, ML042180463, ML042650265, ML042680087, ML043020494, ML050060086, ML050280310, ML050450423, ML050940230, ML050940242, ML052080154, ML053490030, ML053530148, ML060330490, ML060410119, ML061290566, ML061870277
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MONTHYEARML0323403792003-08-31031 August 2003 Technical Assessment of Quad Cities Unit 2, Steam Dryer Failure - Determination of Root Cause & Extent of Condition Project stage: Request ML0328104472003-10-0101 October 2003 Vermont Yankee - Technical Specification Proposed Change No. 263, Supplemental No. 1 Regarding Extended Power Uprate, Technical Review Guidance Project stage: Request ML0330403972003-10-30030 October 2003 Meeting Handouts for Meeting with Entergy Re Issues for Alternate Source Term, Power Uprate & Acts/Mellla Application Project stage: Meeting ML0331000472003-10-30030 October 2003 Sign-in Sheet for 10/30/2003 Meeting with ENVY and ENO Re to Discuss Arts/Mellla, Alternate Source Term, and Extended Power Uprate Aplications Project stage: Meeting ML0331000232003-11-19019 November 2003 10/30/2003 Meeting with Entergy Nuclear Vermont Yankee, LLC and Entergy Nuclear Operations, Inc Regarding Arts/Mellla, Alternate Source Term, and Extended Power Uprate Applications Project stage: Meeting ML0334403992003-12-0808 December 2003 Technical Specification Proposed Change No. 263 Regarding Extended Power Uprate - State of Vermont Questions Project stage: Request ML0331800882003-12-15015 December 2003 Vermont Yankee Nuclear Power Station - Extended Power Uprate Acceptance Review Project stage: Acceptance Review ML0331601872003-12-16016 December 2003 Vermont Yankee Nuclear Power Station, Withholding from Public Disclosure, NEDC-33090P, Revision 0, Project stage: Other ML0430204942003-12-24024 December 2003 NRR Work Request to IEPB-A Project stage: Other ML0336401382003-12-30030 December 2003 Vermont Yankee, Draft Request for Additional Information Project stage: Draft RAI ML0400805732004-01-0707 January 2004 NPSH for BWR Extended Power Upgrades (EPU) Project stage: Other ML0400904112004-01-0909 January 2004 NPSH for BWR Extended Power Upgrades (EPU) Project stage: Other BVY 04-009, Vermont Yankee - Technical Specification Proposed Change No. 263, Supplement No. 4 Regarding Extended Power Uprate, NRC Acceptance Review2004-01-31031 January 2004 Vermont Yankee - Technical Specification Proposed Change No. 263, Supplement No. 4 Regarding Extended Power Uprate, NRC Acceptance Review Project stage: Supplement ML0404001612004-02-19019 February 2004 Vermont Yankee Nuclear Power Station, Request for Withholding Information from Public Disclosure Project stage: Withholding Request Acceptance ML0405003022004-02-20020 February 2004 Vermont Yankee Nuclear Power Station - Extended Power Uprate Acceptance Review Project stage: Acceptance Review ML0406306032004-02-27027 February 2004 G20040138/LTR-04-0107 - Sen. James Jeffords & Patrick Leahy Ltr Proposed Power Uprate at Vermont Yankee Project stage: Request ML0408500762004-03-15015 March 2004 G20040206/LTR-04-0168 - Ltr. Rep. Michael Dworkin Independent Safety Asessment of Vermont Yankee Project stage: Request ML0404100222004-03-19019 March 2004 Vermont Yankee Nuclear Power Station, Withholding from Public Disclosure, Responses to Request for Additional Information (Attachment 1 to Letter Bvy 04-008) Project stage: RAI ML0411007042004-03-31031 March 2004 Enclosure 1, March 31, 2004, Vermont Yankee Annual Assessment Meeting Power Up-Rate Public Meeting Attendance List Project stage: Meeting ML0411203582004-03-31031 March 2004 Transcription Meeting Summary, 03/31/2004 Category 3 Meeting with Public to Discuss Proposed Power Uprate, Pages 1-124. Project stage: Meeting ML0410603312004-05-17017 May 2004 Enclosures 3 - 13, 03/31/2004 Meeting Summary for Vermont Yankee Project stage: Meeting ML0411201272004-05-17017 May 2004 Category 3 Public Meeting Summary with Entergy Nuclear Operations Inc. to Discuss Proposed Power Uprate for Vermont Yankee Nuclear Power Station Project stage: Meeting ML0411203682004-05-17017 May 2004 Enclosure 14, 03/31/2004 Meeting Summary for Vermont Yankee. Slides Presentation Proposed Power Uprate Project stage: Meeting ML0414500202004-05-28028 May 2004 Vermont Yankee - Request for Additional Information - Extended Power Uprate Project stage: RAI ML0418100222004-06-25025 June 2004 Compliance with NRC Regulatory Compliance Project stage: Other ML0331400252004-06-25025 June 2004 Vermont, Notice of Consideration of Issuance of Amendment to Facility Operating License for Extended Power Uprate and Opportunity for Hearing Project stage: Other ML0418104332004-06-29029 June 2004 Vermont Yankee, 06/29/04 E-mail - Compliance with NRC Regulatory Compliance Project stage: Other ML0417400392004-07-0606 July 2004 Vermont Nuclear Power Station, Request for Additional Information, Extended Power Uprate. TAC No. MC0761 Project stage: RAI BVY 04-081, Vermont Yankee Nuclear Power Station, Technical Specification Proposed Change No. 263 - Supplement No. 11 Extended Power Uprate - Response to Request for Additional Information2004-08-12012 August 2004 Vermont Yankee Nuclear Power Station, Technical Specification Proposed Change No. 263 - Supplement No. 11 Extended Power Uprate - Response to Request for Additional Information Project stage: Supplement ML0421804632004-08-31031 August 2004 Vermont Yankee Nuclear Power Station, Withholding from Public Disclosure, Project stage: Other ML0424405372004-09-0101 September 2004 Vermont Yankee Nuclear Power Station, Request for Additional Information - Extended Power Uprate Project stage: RAI ML0425103952004-09-0202 September 2004 Attachments 1 Through 4 of 07/21/2004 & 07/22/2004 Summary of Meeting with Entergy Nuclear Operations, Inc., on Steam Dryer Analysis Project stage: Meeting ML0422200222004-09-0202 September 2004 07/21/2004 & 07/22/2004 Summary of Meeting with Entergy Nuclear Operations, Inc., on Steam Dryer Analysis Project stage: Meeting BVY 04-097, Vermont Yankee Nuclear Power Station - Technical Specification Proposed Change No. 263 - Supplement No. 13 Extended Power Uprate - Response to Steam Dryer Action Items2004-09-14014 September 2004 Vermont Yankee Nuclear Power Station - Technical Specification Proposed Change No. 263 - Supplement No. 13 Extended Power Uprate - Response to Steam Dryer Action Items Project stage: Supplement BVY 04-098, Vermont Yankee - Technical Specification Proposed Change No. 263 - Supplement No. 14 Extended Power Uprate - Response to Request for Additional Information2004-09-15015 September 2004 Vermont Yankee - Technical Specification Proposed Change No. 263 - Supplement No. 14 Extended Power Uprate - Response to Request for Additional Information Project stage: Supplement BVY 04-100, Vermont Yankee Nuclear Power Station Technical Specification Proposed Change No. 263 - Supplement No. 15 Extended Power Uprate - Response to Steam Dryer Action Item No. 22004-09-23023 September 2004 Vermont Yankee Nuclear Power Station Technical Specification Proposed Change No. 263 - Supplement No. 15 Extended Power Uprate - Response to Steam Dryer Action Item No. 2 Project stage: Supplement ML0505901452004-09-29029 September 2004 Vermont Yankee Attendance List for Sept. 29, 2004 Meeting Steam Dryer Analysis Project stage: Meeting BVY 04-113, Vermont Yankee Nuclear Power Station - Proposed Technical Specification Change No. 263 - Supplement No. 20 Extended Power Uprate - Meeting on Steam Dryer Analysis Meeting Presentation Slides2004-09-29029 September 2004 Vermont Yankee Nuclear Power Station - Proposed Technical Specification Change No. 263 - Supplement No. 20 Extended Power Uprate - Meeting on Steam Dryer Analysis Meeting Presentation Slides Project stage: Supplement BVY 04-101, Vermont Yankee Nuclear Power Station Technical Specification Proposed Change No. 263 - Supplement No. 16 Extended Power Uprate - Additional Information Related to Request for Additional Information EMEB-B-52004-09-30030 September 2004 Vermont Yankee Nuclear Power Station Technical Specification Proposed Change No. 263 - Supplement No. 16 Extended Power Uprate - Additional Information Related to Request for Additional Information EMEB-B-5 Project stage: Supplement BVY 04-107, Vermont Yankee - Technical Specification Proposed Change No. 263 - Supplement No. 17 Extended Power Uprate - Response to Request for Additional Information Related to the 10 CFR 50 Appendix R Timeline2004-09-30030 September 2004 Vermont Yankee - Technical Specification Proposed Change No. 263 - Supplement No. 17 Extended Power Uprate - Response to Request for Additional Information Related to the 10 CFR 50 Appendix R Timeline Project stage: Supplement BVY 04-106, Vermont Yankee - Technical Specification Proposed Change No. 263 - Supplement No. 18 Extended Power Uprate - ECCS Pump Net Positive Suction Head Margin2004-10-0505 October 2004 Vermont Yankee - Technical Specification Proposed Change No. 263 - Supplement No. 18 Extended Power Uprate - ECCS Pump Net Positive Suction Head Margin Project stage: Supplement BVY 04-109, Vermont Yankee Nuclear Power Station - Technical Specification Proposed Change No. 263 - Supplement No. 19 Extended Power Uprate - Initial Plant Test Program2004-10-0707 October 2004 Vermont Yankee Nuclear Power Station - Technical Specification Proposed Change No. 263 - Supplement No. 19 Extended Power Uprate - Initial Plant Test Program Project stage: Supplement ML0426800872004-10-13013 October 2004 Vermont Yankee Nuclear Power Station- Technical Audit of Steam Dryer Analysis in Support of Extended Power Uprate Request Project stage: Other ML0426502652004-10-15015 October 2004 Vermont Yankee Nuclear Power Station - Extended Power Uprate Review Schedule Project stage: Other ML0500600862004-11-12012 November 2004 Content of VY Steam Dryer Audit Report, Non-Proprietary Project stage: Other ML0431303472004-12-0101 December 2004 Request for Withholding Information from Public Disclosure, Vermont Yankee Project stage: Withholding Request Acceptance ML0431303182004-12-0101 December 2004 Request for Withholding Information from Public Disclosure, Vermont Yankee Project stage: Withholding Request Acceptance BVY 04-131, Vermont Yankee Nuclear Power Station Technical Specification Proposed Change No. 263 - Supplement No. 22 Extended Power Uprate - 10 CFR 50 Appendix R Timeline Verification2004-12-0808 December 2004 Vermont Yankee Nuclear Power Station Technical Specification Proposed Change No. 263 - Supplement No. 22 Extended Power Uprate - 10 CFR 50 Appendix R Timeline Verification Project stage: Supplement BVY 04-129, Vermont Yankee - Technical Specification Proposed Change No. 263 - Supplement No. 21 Extended Power Uprate - Steam Dryer Power Ascension Testing2004-12-0909 December 2004 Vermont Yankee - Technical Specification Proposed Change No. 263 - Supplement No. 21 Extended Power Uprate - Steam Dryer Power Ascension Testing Project stage: Supplement ML0433700492004-12-21021 December 2004 Vermont Yankee, Request for Additional Information, Extended Power Uprate, Project stage: RAI 2004-12-09
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Category:Letter type:BVY
MONTHYEARBVY 24-005, Report of Investigation Pursuant to 10 CFR 20, Appendix G2024-01-30030 January 2024 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 24-004, Report of Investigation Pursuant to 10 CFR 20, Appendix G2024-01-23023 January 2024 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 24-003, Nuclear Onsite Property Damage Insurance2024-01-0404 January 2024 Nuclear Onsite Property Damage Insurance BVY 24-001, Pre-Notice of Disbursement from Decommissioning Trust2024-01-0202 January 2024 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-030, Report of Investigation Pursuant to 10 CFR 20, Appendix G2023-12-20020 December 2023 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 23-029, Proof of Financial Protection2023-12-12012 December 2023 Proof of Financial Protection BVY 23-028, Pre-Notice of Disbursement from Decommissioning Trust2023-11-28028 November 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-027, Report of Investigation Pursuant to 10 CFR 20, Appendix G2023-11-21021 November 2023 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 23-026, Report of Investigation Pursuant to 10 CFR 20, Appendix G2023-11-13013 November 2023 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 23-025, Pre-Notice of Disbursement from Decommissioning Trust2023-11-0202 November 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-023, License Amendment Request Addition of License Condition 3.K, License Termination Plan; Proposed Change No. 3172023-10-10010 October 2023 License Amendment Request Addition of License Condition 3.K, License Termination Plan; Proposed Change No. 317 BVY 23-022, Pre-Notice of Disbursement from Decommissioning Trust2023-08-23023 August 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-020, Pre-Notice of Disbursement from Decommissioning Trust2023-08-0202 August 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-021, Report of Investigation Pursuant to 10 CFR 20, Appendix G2023-08-0202 August 2023 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 23-019, Update to 2022 Radiological Effluent Release Report2023-07-24024 July 2023 Update to 2022 Radiological Effluent Release Report BVY 23-018, Update to Nuclear Onsite Property Damage Insurance2023-07-12012 July 2023 Update to Nuclear Onsite Property Damage Insurance BVY 23-017, Pre-Notice of Disbursement from Decommissioning Trust2023-06-29029 June 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-016, 10 CFR 72.48 Report2023-06-0505 June 2023 10 CFR 72.48 Report BVY 23-015, Report of Investigation Pursuant to 1O CFR 20, Appendix G2023-06-0505 June 2023 Report of Investigation Pursuant to 1O CFR 20, Appendix G BVY 23-014, Pre-Notice of Disbursement from Decommissioning Trust2023-05-31031 May 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-013, 2022 Radiological Environmental Operating Report2023-05-10010 May 2023 2022 Radiological Environmental Operating Report BVY 23-011, 2022 Radiological Effluent Release Report2023-05-10010 May 2023 2022 Radiological Effluent Release Report BVY 23-012, Pre-Notice of Disbursement from Decommissioning Trust2023-05-0202 May 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-009, 2022 Individual Monitoring NRC Form 5 Report2023-04-24024 April 2023 2022 Individual Monitoring NRC Form 5 Report BVY 23-008, Pre-Notice of Disbursement from Decommissioning Trust2023-04-0606 April 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-006, Status of Decommissioning and Spent Fuel Management Fund for Year Ending 20222023-03-29029 March 2023 Status of Decommissioning and Spent Fuel Management Fund for Year Ending 2022 BVY 23-007, Report of Investigation Pursuant to 10 CFR 20, Appendix G2023-03-29029 March 2023 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 23-005, Nuclear Onsite Property Damage Insurance2023-03-13013 March 2023 Nuclear Onsite Property Damage Insurance BVY 23-004, Pre-Notice of Disbursement from Decommissioning Trust2023-03-0202 March 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 23-003, Pre-Notice of Disbursement from Decommissioning Trust2023-01-31031 January 2023 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-030, Documentary Evidence of Performance Bond2022-12-30030 December 2022 Documentary Evidence of Performance Bond BVY 22-028, Re Proof of Financial Protection2022-11-28028 November 2022 Re Proof of Financial Protection BVY 22-027, Bvy 22-027; Pre-Notice of Disbursement from Decommissioning Trust for Vermont Yankee Nuclear Power Station2022-11-11011 November 2022 Bvy 22-027; Pre-Notice of Disbursement from Decommissioning Trust for Vermont Yankee Nuclear Power Station BVY 22-026, Pre-Notice of Disbursement from Decommissioning Trust2022-10-31031 October 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-025, Pre-Notice of Disbursement from Decommissioning Trust2022-10-0404 October 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-023, Pre-Notice of Disbursement from Decommissioning Trust2022-09-0101 September 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-022, Report of Investigation Pursuant to 10 CFR 20, Appendix G2022-08-22022 August 2022 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 22-021, Report of Investigation Pursuant to 10 CFR 20, Appendix G2022-08-16016 August 2022 Report of Investigation Pursuant to 10 CFR 20, Appendix G BVY 22-020, Pre-Notice of Disbursement from Decommissioning Trust2022-08-0101 August 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-019, Pre-Notice of Disbursement from Decommissioning Trust2022-07-0606 July 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-013, Notification of Revised Decommissioning Cost Estimate2022-06-17017 June 2022 Notification of Revised Decommissioning Cost Estimate BVY 22-018, Pre-Notice of Disbursement from Decommissioning Trust2022-06-0808 June 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-015, 2021 Radiological Environmental Operating Report2022-05-0505 May 2022 2021 Radiological Environmental Operating Report BVY 22-017, Pre-Notice of Disbursement from Decommissioning Trust2022-05-0505 May 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-014, 2021 Radiological Effluent Release Report2022-04-28028 April 2022 2021 Radiological Effluent Release Report BVY 22-012, Biennial Report for Quality Assurance Program Manual Changes Under 10 CFR 50.54(a)(3), 10 CFR 71.106, and 10 CFR 72.140(d)2022-04-12012 April 2022 Biennial Report for Quality Assurance Program Manual Changes Under 10 CFR 50.54(a)(3), 10 CFR 71.106, and 10 CFR 72.140(d) BVY 22-011, Pre-Notice of Disbursement from Decommissioning Trust2022-04-0404 April 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-009, Status of Decommissioning and Spent Fuel Management Fund for the Year Ending 20212022-03-23023 March 2022 Status of Decommissioning and Spent Fuel Management Fund for the Year Ending 2021 BVY 22-008, Pre-Notice of Disbursement from Decommissioning Trust2022-02-24024 February 2022 Pre-Notice of Disbursement from Decommissioning Trust BVY 22-005, ISFSI Decommissioning Funding Plan2022-02-24024 February 2022 ISFSI Decommissioning Funding Plan 2024-01-04
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Text
Entergy Nuclear Northeast Ank wm mm Entergy Nuclear Operations, Inc.
Vermont Yankee
= 11 tamp185 eg A--En y P.O.
Old Ferry Rd.
Box 500 Brattleboro, Vr 05302 Tel 802-257-5271 June 2, 2005 Docket No. 50-271 BVY 05-061 TAC No. MC0761 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
Vermont Yankee Nuclear Power Station Technical Specification Proposed Change No. 263 - Supplement No. 29 Extended Power Uprate - Steam Dryer Computational Fluid Dynamics
References:
- 1) Entergy letter to U.S. Nuclear Regulatory Commission, "Vermont Yankee Nuclear Power Station, License No. DPR-28 (Docket No. 50-271), Technical Specification Proposed Change No. 263, Extended Power Uprate," BVY 03-80, September 10, 2003
- 2) Entergy letter to U.S. Nuclear Regulatory Commission, "Vermont Yankee Nuclear Power Station, License No. DPR-28 (Docket No. 50-271), Technical Specification Proposed Change No. 263, Supplement No. 26 - Steam Dryer Analyses and Monitoring," BVY 05-034, March 31, 2005 This letter provides additional information regarding the application by Entergy Nuclear Vermont Yankee, LLC and Entergy Nuclear Operations, Inc. (Entergy) for a license amendment (Reference 1) to increase the maximum authorized power level of the Vermont Yankee Nuclear Power Station (VYNPS) from 1593 megawatts thermal (MWt) to 1912 MWt.
In Reference 2, Entergy submitted the VYNPS steam dryer analysis, including an assessment of flow induced vibration derived by conservatively combining hydrodynamic loads with acoustic loads from the VYNPS acoustic circuit model. The basis for the hydrodynamic loads was a computational fluid dynamics (CFD) analysis performed at 100% of currently licensed thermal power (CLTP) and summarized in Reference 2.
The CFD analysis is a compressible large eddy simulation (LES) that is a state-of-the-art tool.
The CFD model provides additional insight into the fluid dynamics in the reactor dome. As requested by the staff, Attachment 1 to this letter provides the details of the CFD methodology used in the analysis of the VYNPS steam dryer. Attachment 1 contains additional analyses, beyond those reported in Reference 2, that were subsequently performed to simulate hydrodynamic loads at 120% of CLTP.
ALL' Ic~
BVY 05-061 Docket No. 50-271 Page 2 of 3 The following aspects of the analysis are noteworthy:
- Hydrodynamic pressure fluctuations on the steam dryer face adjacent to the steam nozzles have a frequency less than 30 Hz. Complex flow structures and vortices in the plenum near the main steam nozzles account for these pressure fluctuations.
. The CFD model time step and modeling parameters were developed to accurately simulate hydrodynamic effects. Because the LES simulation included compressibility, acoustic effects are also captured. It was found that pressure fluctuations with frequencies greater than 30 Hz are dominated by acoustic effects.
- A comparison of the CFD flow simulation for CLTP and extended power uprate (EPU) does not show significant changes in the flow characteristics or dryer loading that would structurally challenge the modified VYNPS dryer.
The results of the analyses performed to evaluate pressure loads on the steam dryer, together with steam dryer monitoring, provide reasonable assurance that the steam dryer will maintain its structural integrity at EPU conditions.
There are no new regulatory commitments contained in this submittal.
This supplement to the license amendment request provides additional information to clarify Entergy's application for a license amendment and does not change the scope or conclusions in the original application, nor does it change Entergy's determination of no significant hazards consideration.
If you have any questions or require additional information, please contact Mr. James DeVincentis at (802) 2584236.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on June __ , 2005.
Sincerely,
,May/K. 'hayer ite Vice President Vermont Yankee Nuclear Power Station Attachment (1) cc: (see next page)
BVY 05-061 Docket No. 50-271 Page 3of3 cc: Mr. Richard B. Ennis, Project Manager Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0 8 B1 Washington, DC 20555 Mr. Samuel J. Collins Regional Administrator, Region 1 U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406-1415 USNRC Resident Inspector Entergy Nuclear Vermont Yankee, LLC P.O. Box 157 Vernon, Vermont 05354 Mr. David O'Brien, Commissioner VT Department of Public Service 112 State Street - Drawer 20 Montpelier, Vermont 05620-2601
BVY 05-061 Docket No. 50-271 Attachment 1 Vermont Yankee Nuclear Power Station Proposed Technical Specification Change No. 263 - Supplement No. 29 Extended Power Uprate Steam Dryer Computational Fluid Dynamics Total number of pages in Attachment I (excludina this cover sheet) is 98.
BVY 05-061 Docket No. 50-271 EXTENDED POWER UPRATE VERMONT YANKEE NUCLEAR POWER STATION ACRONYMS Ap/DP differential pressure CFD computational fluid dynamics EPU extended power uprate FFT fast Fourier transform ITA iterative time-advancing LES large-eddy simulation NIST National Institute of Standards and Technology NITA non-iterative time advancing p pressure PSD power spectral density RANS Reynolds-averaged Navier-Stokes sg/SG strain gage UFD user-defined function URANS unsteady Reynolds-averaged Navier-Stokes VY Vermont Yankee Nuclear Power Station