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Letter Sequence Request |
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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:License-Technical Assistance Request (TAR)
MONTHYEARML0501003372005-07-0707 July 2005 Memo to James Lyons, Technical Assistance Related to Auditing Vermont Yankee Containment Analysis for Evaluation of NPSH ML0501003432005-07-0707 July 2005 Technical Assistance Related to Auditing Vermont Yankee Containment Analysis for Evaluation of NPSH 2005-07-07
[Table view] Category:Reply to
MONTHYEARML0501003372005-07-0707 July 2005 Memo to James Lyons, Technical Assistance Related to Auditing Vermont Yankee Containment Analysis for Evaluation of NPSH ML0501003432005-07-0707 July 2005 Technical Assistance Related to Auditing Vermont Yankee Containment Analysis for Evaluation of NPSH 2005-07-07
[Table view] Category:Memoranda
MONTHYEARML19317D0762019-11-18018 November 2019 Summary of Meeting Near Vermont Yankee Power Station Regarding Establishment and Opration of Community Advisory Boards ML17271A0532017-09-29029 September 2017 2017 Summary of Annual Decommissioning Funding Status Reports for Reactors in Decommissioning ML17143A1552017-06-0606 June 2017 Memorandum to C. Bladey Notice of Availability of Exemption for Entergy Energy Operations, Inc., Vermont Yankee Nuclear Power Station Independent Spent Fuel Storage Installation ML17045A5282017-05-25025 May 2017 Memo to C. Bladey Notice of Availability of Environmental Assessment and Finding of No Significant Impact for Entergy Nuclear Operations, Inc., Vermont Yankee Nuclear Power Station, Independent Spent Fuel Storage Installation Exemption Requ ML17055A5042017-03-0101 March 2017 Revision of the NRC Vermont Yankee Decommissioning Webpage ML16176A3392016-10-28028 October 2016 Decommissioning Lessons Learned Report and Transmittal Memorandum ML16088A2042016-03-28028 March 2016 Memo T Bowers from s Ruffin, Technical Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations W/ Encl 2 (Template) ML16088A2052016-03-28028 March 2016 Enclosure 1 - (72.30 DFP Reviews to Be Completed 2015) - Memo T Bowers from s Ruffin, Technial Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations ML14209A7052014-08-0606 August 2014 Letter to FEMA Requesting Review and Concurrence of Certain Proposed Entergy Nuclear Operations, Inc. Emergency Response Organization Changes to the Vermont Yankee Site Emergency Plan ML14209A9352014-07-24024 July 2014 1st Quarter 2014 Performance Review ML13150A2182013-05-31031 May 2013 6/12/13 Notice of Conference Call with Entergy Nuclear Operations, Inc. to Discuss Draft Request for Additional Information for Vermont Yankee NRC Order Number EA-12-049 Related to Mitigation Strategies ML13108A3282013-04-22022 April 2013 Notice of Forthcoming Meeting with Petitioners Requesting Action Against Entergy Nuclear Operations, Inc., Regarding Operations at FitzPatrick, Pilgrim, and Vermont Yankee Nuclear Power Stations (TAC Nos. MF1092, MF1093, and MF1094) ML12298A0882012-10-24024 October 2012 Forthcoming Meeting to Discuss Proposed License Amendment Request to Revise 10 CFR 50.63 Alternate AC Power Source to SBO EDG ML13219A0472012-03-15015 March 2012 Memo from M. Murphy to G. Wilson, Subj: Safety Evaluation Regarding Vermont Yankee Nuclear Power Station Core Plate Hold Down Bolt Inspection Plan and Analysis ML13127A3692012-03-15015 March 2012 Memo from M. Murphy to G. Wilson, Subj: Safety Evaluation Regarding Vermont Yankee Nuclear Power Station Core Plate Hold Down Bolt Inspection Plan and Analysis ML11321A2282011-11-17017 November 2011 Third Quarter 2011 Performance Review Memorandum ML11250A1712011-09-14014 September 2011 Notice of Forthcoming Meeting with Petitioner Requesting Action Under 10 CFR 2.206 Regarding Immediate Suspension of the Operating Licenses of General Electric (GE) Mark 1 Boiling Water Reactors (Bwrs) ML1115704052011-06-0606 June 2011 Notice of Meeting with Entergy Operations, Inc., to Discuss Implementation of Quality Oversight and Verification Programs at Entergy Sites Including Actions Being Taken to Enhance Effectiveness ML11126A0962011-05-12012 May 2011 Notice of Meeting with Petitioner Requesting Action Under 10CFR2.206 Regarding Immediate Suspension of Operating Licenses of General Electric Mark 1 Boiling Water Reactors ML1107504052011-03-21021 March 2011 Notice of Meeting with Entergy Operations, Inc., to Discuss Fleetwide Submittal for Proposed Technical Specification and Quality Assurance Program Manual Changes Related to Unit Staff Qualification Requirements ML1100502522011-02-0909 February 2011 Memo to Chairman Jaczko Fm R. W. Borchardt, EDO Initiatives for Improved Communication of Groundwater Incidents ML1030101362010-10-28028 October 2010 Memorandum and Order (Ruling on Motion to Reopen Proffering New Contention) (LBP-10-19) ML1009904582010-04-0808 April 2010 Deviation from the Reactor Oversight Process to Provide Increase NRC Oversight to Specific Issues at Vermont Yankee Nuclear Power Station ML1009603212010-04-0505 April 2010 Request for Deviation from the Reactor Oversight Process Action Matrix to Provide Increased NRC Oversight of Specific Issues at Vermont Yankee ML1006401882010-03-0505 March 2010 Charter for the Groundwater Contamination Task Force ML0927301372009-10-0909 October 2009 Safety Evaluation by the Office of Nuclear Reactor Regulation Corporate Restructuring Conversion of Companies and Stock Split-Off by Entergy Nuclear Operations, Inc and Subsidiaries ML0915200092009-06-0808 June 2009 Forwarding of Supplement 1 to NUREG 1907 to the ACRS ML0913308232009-05-13013 May 2009 Summary of Annual Assessment Mtg - Vermont Yankee - 4/16/09 ML0904005422009-02-17017 February 2009 Audit Plan for Review of Confirmatory Analyses for the Core Spray and Reactor Recirculation Outlet Nozzles at the Vermont Yankee Nuclear Power Station ML0820601722008-08-0808 August 2008 Docketing of Additional Information Pertaining to the License Renewal Application of the Vermont Yankee Nuclear Power Station ML0807400842008-03-14014 March 2008 Draft Regulatory Guide for Comment ML0805606272008-02-27027 February 2008 Advisory Committee on Reactor Safeguards Review of the Vermont Yankee Nuclear Power Station License Renewal Application - Safety Evaluation Report ML0802205082008-01-31031 January 2008 01/08/2008 Summary of Meeting Between the NRC Staff and Entergy Nuclear Operations, Inc. to Discuss the Response to a Request for Additional Information Pertaining to the Vermont Yankee License Renewal ML0801505932008-01-17017 January 2008 December 2007 Report on the Status of Public Petitions Under Title 10 of the Code of Federal Regulations (10 CFR) Section 2.206 ML0733001522007-11-26026 November 2007 Summary of Telephone Conference Call Held on October 16, 2007, Between U.S. Nuclear Regulatory Commission and Entergy Nuclear Operations, Inc., Concerning Audit Questions Pertaining to the Vermont Yankee Nuclear Power Station License Renewa ML0721804332007-08-0808 August 2007 Summary of Telephone Conference Call Held on July 18, 2007, Between the U.S. Nuclear Regulatory Commission and Entergy Nuclear Operations, Inc., Concerning Requests for Additional Information Pertaining to the Vermont Yankee Nuclear Power S ML0721805222007-08-0808 August 2007 Summary of Telephone Conference Call Held on June 29, 2007, Between the U.S. Nuclear Regulatory Commission and Entergy Nuclear Operations, Inc., Concerning Request for Additional Information Pertaining to the Vermont Yankee Nuclear Power St ML0718301872007-07-10010 July 2007 06/01/2007 Summary of Telephone Conference Call Between the NRC and Entergy Nuclear Operations, Inc., Concerning Items Pertaining to the Vermont Yankee License Renewal Safety Evaluation Report ML0716303702007-07-10010 July 2007 Trip Report Summarizing May 29, 2007 Visit to Vermont Yankee Nuclear Power Plant Regarding the License Renewal Environmental Review ML0713103192007-05-0808 May 2007 FRN - Plant License Renewal, June 5, 2007 ML0706101802007-05-0101 May 2007 Trip Report for a Trip Taken to Vermont, Massachusetts and New Hampshire ML0714104342007-04-25025 April 2007 Handouts to Applicants (Folder 3) ML0707406912007-04-0303 April 2007 ACRS Review of the Vermont Yankee Nuclear Power Station, License Renewal Application - Safety Evaluation Report ML0705305612007-02-20020 February 2007 Y020070028 - E-mail Hoch, NRR, to Becker, State of Vermont, Seismic and Flood Questions from Anr ML0704000852007-02-13013 February 2007 G20070068/LTR-07-0060/SECY-2007-0019 - Draft Supplemental Environmental Impact Statement for License Renewal of Vermont Yankee - Letters to Senator Leahy, Senator Sanders, Representative Welch from Luis Reyes ML0703605602006-11-0808 November 2006 Y020070028 - Informal Vermont Yankee Seismic and Hydrology Questions ML0627900712006-10-12012 October 2006 2006/10/12-Summary of a Telephone Conference Call Held on September 14, 2006, Between the U.S. NRC and Entergy Nuclear Operations, Inc, Concerning Information Pertaining to the Vermont Yankee Nuclear Power Station License Renewal Applicatio ML0627202182006-09-29029 September 2006 2006/09/29-Summary of a Telephone Conference Call Held on August 10, 2006, Between the U.S. NRC and Entergy Nuclear Operations, Inc., Concerning Information Pertaining to the Vermont Yankee Nuclear Power Station License Renewal Application ML0625801872006-09-14014 September 2006 2006/09/14-Audit Trip Report Regarding Entergy Nuclear Vermont Yankee, LLC, License Renewal Application for Vermont Yankee Power Station, Dated January 29, 2006 ML0617303972006-07-11011 July 2006 2006/07/11-Summary of Environmental Site Audit Related to the Review of the License Renewal Application for Vermont Yankee Nuclear Power Station 2019-11-18
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Text
July 7, 2005 MEMORANDUM TO: James E. Lyons, Director Division of Systems Safety and Analysis Office of Nuclear Reactor Regulation FROM: Farouk Eltawila, Director /RA/
Division of Systems Analysis and Regulatory Effectiveness Office of Nuclear Regulatory Research
SUBJECT:
TECHNICAL ASSISTANCE RELATED TO AUDITING VERMONT YANKEE CONTAINMENT ANALYSIS FOR EVALUATION OF NPSH Pursuant to a request for technical assistance in performing computer calculations to support the review of the Vermont Yankee power uprate license amendment request, particularly, this request was to analyze the long-term containment response used for evaluating NPSH. Using the licensees information from a letter dated August 12, 2004 and consultation with your cognizant staff member, R. Lobel, RES has performed NPSH audit calculations using the CONTAIN code. The following summarizes our effort.
Focusing on the key figure of merit, i.e., peak long-term suppression pool temperature, CONTAIN was used for modeling the Vermont Yankee Mark I design. Firstly, a two control volume model was constructed to represent the drywell and wetwell volumes. Due to the long execution times of this two-volume model and considering the possible need to perform code sensitivities (also recognizing that these were stable long-term transients which usually exhibit compensating factors), a consolidated one-volume model was constructed. Attached are the results of these calculations which are compared to the licensees results. [Since we did not initially have all the heat exchanger characteristics to model a shell-tube design, a temperature drop option was used first and after we received more information to model the shell-tube heat exchanger, another CONTAIN one-volume case was performed.] All these code parameters/modeling variations made little difference and we show a good comparison with the licensee.
In summary, CONTAIN predicted results for Vermont Yankee are comparable to the licensees calculations and the overall longterm transient response is consistent with other Mark I designs.
And the input supplied by the licensee appeared reasonable.
J. Lyons 2 We understand that this NPSH issue would likely be discussed in future public meetings on the licensees power uprate request, thereby more code calculations may be needed. RES will accordingly be engaged. Please contact Allen Notafrancesco (415-6499) for any further discussion on this matter.
Attachment:
As stated
J. Lyons 2 We understand that this NPSH issue would likely be discussed in future public meetings on the licensees power uprate request, thereby more code calculations may be needed. RES will accordingly be engaged. Please contact Allen Notafrancesco (415-6499) for any further discussion on this matter.
Attachment:
As stated Distribution w/att.:
SMSAB R/F DSARE R/F CGrimes, MTSchiltz RDennig EThrom RLobel Package: ML050100350
Attachment:
ML050100343 E:\Filenet\ML050100337.wpd OAR in ADAMS? (Y or N) Y ADAMS ACCESSION NO.: ML050100337 TEMPLATE NO. RES-006 Publicly Available? (Y or N) Y DATE OF RELEASE TO PUBLIC SENSITIVE? N To receive a copy of this document, indicate in the box: "C" = Copy without enclosures "E" = Copy with enclosures "N" = No copy OFFICE *SMSAB *SC:SMSAB *C:SMSAB *D:DSARE *SISP Review *SISP Review NAME ANotafrancesco:mb RHogan Pbaranowsky by WBurton FEltawila ANotafrancesco PBaranowsky DATE 7/5/05 7/5 /05 7/5/05 7/6/05 7/6 /05 7/7/05