Letter Sequence RAI |
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Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, ... further results|Request]]
- Acceptance, Acceptance, Acceptance
Results
Other: BVY 06-065, 2006/07/27-Vermont Yankee License Renewal Application, Amendment 6, BVY 06-077, 2006/08/10-Vermont Yankee - License Renewal Application, Amendment 9, BVY 06-095, E-mail: (PA-LR) Copy of SAMA Response, ML061040142, ML061740035, ML061740572, ML061770071, ML061920474, ML062680034, ML063120067, ML063420178, ML070230041, ML070710215, ML071430101, ML071840778, ML071840890
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MONTHYEARML0617705932006-04-10010 April 2006 State of Vermont, Environmental Radiation Surveillance Report, 2005 Summary. Vermont Department of Health Office of Radiological Health Project stage: Request ML0610401422006-04-12012 April 2006 2006/04/12 - Notice of Intent to Prepare an Environmental Impact Statement and Conduct Scoping Process for License Renewal for the Vermont Yankee Nuclear Power Station Project stage: Other ML0617701692006-04-27027 April 2006 VYNPS Emergency Diesel DG-1-1A Preventative Maintenance Logs Project stage: Request ML0625400452006-04-27027 April 2006 Email: (PA) Request for Additional Information to Support the Staff'S Severe Accident Mitigation Alternative Review for Vermont Yankee Nuclear Power Project stage: RAI ML0618804492006-05-23023 May 2006 VYNPS Public Service Board Testimony for Hydrogen Storage, Parking Area, and Security Barrier System Project stage: Request ML0617301862006-05-24024 May 2006 VYNPS, DR-53 Location Exposure Rate Status-Pre Power Up, Pre and Post Shield Project stage: Request ML0618802112006-05-24024 May 2006 VYNPS Archeological Sensitivity of Assessment, Proposed Gas Storage Area and Access Road January 17, 2001 Project stage: Request ML0617704052006-05-25025 May 2006 VYNPS Used Oil Management and Furnace Operation Summary, 2006 Project stage: Request ML0617701802006-05-25025 May 2006 VYNPS Diesel Fuel Oil Analyses Project stage: Request ML0616400652006-05-26026 May 2006 Massachusetts Attorney General'S Request for a Hearing and Petition for Leave to Intervene with Respect to Entergy Nuclear Operations Inc.'S Application for Renewal of the Vermont Yankee Nuclear Power Plant Operating License and Petition. Project stage: Request ML0615205062006-06-0101 June 2006 Request for Additional Information Regarding Severe Accident Mitigation Alternatives for the Vermont Yankee Nuclear Power Station Project stage: RAI ML0618400362006-06-0606 June 2006 VYNPS Environmental Scoping Open House Transcript Re. LRA Environmental Review, Pages 1-7 Project stage: Request ML0619204742006-06-0707 June 2006 Comment (17) of E. Stamas on Environmental Scoping Process for Vermont Yankee Nuclear Power Station, License Renewal Project stage: Other ML0618400292006-06-0707 June 2006 VYNPS Scoping Mtg Evening Transcript Re. LRA Environmental Review, Pages 1-143 Project stage: Request ML0618400332006-06-0707 June 2006 VYNPS Scoping Mtg Afternoon Transcript Re. LRA Environmental Review, Pages 1-116 Project stage: Request ML0617904762006-06-0707 June 2006 2006/06/07-Slides Used During the Scoping Meeting for VYNPS License Renewal Project stage: Meeting ML0617400352006-06-22022 June 2006 Comment (2) of Thomas Matsuda on the Environmental Scoping Process for the Vermont Yankee Nuclear Power Station License Renewal Application Project stage: Other ML0618406152006-06-23023 June 2006 NRC Public Meeting to Discuss the Environmental Scoping Process of Vermont Yankee Nuclear Power Station, License Renewal Application, Feedback Project stage: Meeting ML0617700712006-06-23023 June 2006 Comment (12) of Sunny Miller on the Environmental Scoping Process for the Vermont Yankee Nuclear Power Station License Renewal Application Project stage: Other ML0617405722006-06-23023 June 2006 Comment (9) of Jon Block, on Behalf of Citizens Awareness Network, on the Environmental Scoping Process for the Vermont Yankee Nuclear Power Station License Renewal Application Project stage: Other ML0619204952006-07-11011 July 2006 2006/07/11-Summary of Public Scoping Meeting Conducted Related to the Review of the Vermont Yankee Nuclear Power Station, License Renewal Application Project stage: Meeting 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 Project stage: Approval BVY 06-065, 2006/07/27-Vermont Yankee License Renewal Application, Amendment 62006-07-27027 July 2006 2006/07/27-Vermont Yankee License Renewal Application, Amendment 6 Project stage: Other BVY 06-071, 2006/08/01-Vermont Yankee Response to Request for Additional Information Regarding License Renewal Application, Amendment 72006-08-0101 August 2006 2006/08/01-Vermont Yankee Response to Request for Additional Information Regarding License Renewal Application, Amendment 7 Project stage: Response to RAI ML0623701022006-08-10010 August 2006 Letter from Us Fws Re Vermont Yankee Nuclear Power Plant Project stage: Request BVY 06-077, 2006/08/10-Vermont Yankee - License Renewal Application, Amendment 92006-08-10010 August 2006 2006/08/10-Vermont Yankee - License Renewal Application, Amendment 9 Project stage: Other ML0626800342006-09-19019 September 2006 2006/09/19-Vermont Yankee License Renewal Application, Amendment 13 Project stage: Other BVY 06-086, License Renewal Application, Amendment 13, Response to Request for Additional Information Regarding Analysis of Severe Accident Mitigation Alternatives2006-09-19019 September 2006 License Renewal Application, Amendment 13, Response to Request for Additional Information Regarding Analysis of Severe Accident Mitigation Alternatives Project stage: Response to RAI ML0629901552006-10-20020 October 2006 2006/10/20-Vermont Yankee - License Renewal Application, Amendment No. 18, Response to Request for Clarification of SAMA RAI Responses Project stage: Request BVY 06-095, E-mail: (PA-LR) Copy of SAMA Response2006-10-20020 October 2006 E-mail: (PA-LR) Copy of SAMA Response Project stage: Other ML0630305762006-10-30030 October 2006 Issuance of Environmental Scoping Summary Report Associated with the Staff'S Review of the Application by Entergy Nuclear Operations, Inc. for Renewal of the Operating License for Vermont Yankee Nuclear Power Station Project stage: Approval BVY 06-099, 2006/11/06-Vermont Yankee License Renewal Application, Amendment 21 Response to Request for Clarification of SAMA RAIs2006-11-0606 November 2006 2006/11/06-Vermont Yankee License Renewal Application, Amendment 21 Response to Request for Clarification of SAMA RAIs Project stage: Request ML0701704722006-12-0101 December 2006 VYNPS - SEIS Web Reference - NPDES Water Permit Program in New England Project stage: Request ML0634201782006-12-0404 December 2006 2006/12/04-Vermont Yankee Nuclear Power Station, License Renewal Application, Amendment 22, Clarification of Aging Management Program and Environmental Report Items Project stage: Other ML0631200672006-12-12012 December 2006 2006/12/12-Request Initiation of an Essential Fish Habitat Consultation Regarding License Renewal of Vermont Yankee Nuclear Power Station Project stage: Other ML0631100072006-12-13013 December 2006 2006/12/13-Notice of Availability of the Draft Plant-Specific Supplement 30 to the Generic Environmental Impact Statement for License Renewal of Nuclear Plants (Geis) Regarding Vermont Yankee Nuclear Power Station Project stage: Draft Other ML0701701262006-12-14014 December 2006 VYNPS - SEIS Web Reference - American Shad Passage on the Connecticut River Project stage: Request ML0701705282006-12-14014 December 2006 VYNPS - SEIS Web References - Shortnose Sturgeon Acipenser Brevirostrum Project stage: Request ML0701702332006-12-14014 December 2006 VYNPS - SEIS Web Reference - Cdep Dwarf Wedge Mussel Project stage: Request ML0701706412006-12-14014 December 2006 VYNPS - SEIS Web Reference - Water Temperature and Gulf of Maine Atlantic Salmon Project stage: Request ML0701705062006-12-14014 December 2006 VYNPS - SEIS Web Reference - Commonwealth of Massachusetts, Public Health Fish Consumption Advisory, Search Results for the Water Body of Connecticut River Project stage: Request ML0701705972006-12-14014 December 2006 VYNPS - SEIS Web Reference - Vermont Climate Summary Project stage: Request ML0701704672006-12-15015 December 2006 VYNPS - SEIS Web Reference - New Hampshire Wildlife Action Plan Project stage: Request ML0701702242006-12-15015 December 2006 VYNPS - SEIS Web Reference - Dwarf Wedge Mussel Fact Sheet Project stage: Request ML0701705842006-12-15015 December 2006 VYNPS - SEIS Web References - the Natural History of River Herrings Project stage: Request ML0701606502006-12-15015 December 2006 VYNPS - SEIS Web Reference - Usfws 2004 Connecticut River Migratory Fish Counts Project stage: Request ML0701606522006-12-15015 December 2006 VYNPS - SEIS Web Reference - Usfws 2005 Connecticut River Migratory Fish Counts Project stage: Request ML0701702672006-12-15015 December 2006 VYNPS - SEIS Web Reference - Fish Passage Schedule Project stage: Request ML0701704482006-12-15015 December 2006 VYNPS - SEIS Web Reference - Natural Resources in the Connecticut River Watershed - Federally Endangered or Threatened Species Project stage: Request ML0701707002006-12-15015 December 2006 VYNPS - SEIS Web Reference - Fish Facts Project stage: Request 2006-05-23
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Category:Letter
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 IR 07200059/20234012023-10-0505 October 2023 Independent Spent Fuel Storage Installation Security Inspection Report 07200059/2023401 BVY 23-022, Pre-Notice of Disbursement from Decommissioning Trust2023-08-23023 August 2023 Pre-Notice of Disbursement from Decommissioning Trust IR 05000271/20230012023-08-15015 August 2023 Northstar Nuclear Decommissioning Company, Llc., Vermont Yankee Nuclear Power Station, - NRC Inspection Report 05000271/2023001 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 23-020, Pre-Notice of Disbursement from Decommissioning Trust2023-08-0202 August 2023 Pre-Notice of Disbursement from Decommissioning Trust 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 23-015, 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 23-016, 10 CFR 72.48 Report2023-06-0505 June 2023 10 CFR 72.48 Report 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 ML23117A2172023-05-0101 May 2023 Safety Evaluation for Quality Assurance Program Manual Reduction in Commitment 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 23-007, 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 23-006, 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 23-005, 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 ML22361A1022023-02-24024 February 2023 Reactor Decommissioning Branch Project Management Changes for Some Decommissioning Facilities and Establishment of Backup Project Manager for All Decommissioning Facilities IR 05000271/20220022023-02-22022 February 2023 Northstar Nuclear Decommissioning Company, LLC, Vermont Yankee Nuclear Power Station - NRC Inspection Report No. 05000271/2022002 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 ML22347A2792022-12-21021 December 2022 Independent Spent Fuel Storage Installation Security Inspection Plan Dated December 21, 2022 IR 05000271/20224012022-12-15015 December 2022 NRC Inspection Report No. 05000271/2022401, Northstar Nuclear Decommissioning Company, LLC, Vermont Yankee Nuclear Power Station, Vernon, Vermont (Letter Only) 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 ML22273A1492022-10-0404 October 2022 Review of Decommissioning Funding Status 2022 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 IR 05000271/20220012022-08-0101 August 2022 NRC Inspection Report No. 05000271/2022001, Northstar Nuclear Decommissioning Company, LLC, Vermont Yankee Nuclear Power Station, Vernon, Vermont 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 2024-01-04
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML19224A4722019-08-26026 August 2019 VY Report on Status of Decommissioning Funding for Shutdown Reactors Enclosure ML18094B0922018-04-0505 April 2018 Enclosurequest for Additional Information (Letter to B. S. Ford RAI Regarding Entergy Operations, Inc.'S Decommissioning Funding Plan Update for ISFSI Docket Nos.: 72-43, 72-51, 72-1044, 72-07, 72-12, and 72-59) ML18045A8172018-04-0505 April 2018 Request for Additional Information on Vermont Yankee License Transfer Request (License DPR-28, Docket No. 50-271) ML17341A3842017-12-14014 December 2017 Request for Additional Information Regarding License Amendment Request to Change Physical Security Plan to Reflect an ISFSI-Only Configuration ML17313A4312017-11-0303 November 2017 NRC Request for Additional Information Regarding the Request for Direct and Indirect License Transfers from Entergy to Northstar ML17279B1452017-10-24024 October 2017 Request for Additional Information Regarding the License Amendment Request to Change the Emergency Plan and Emergency Action Level Scheme to Reflect an ISFSI-Only Configuration ML17244A0982017-10-12012 October 2017 NRC Request for Additional Information Regarding the Request for Direct and Indirect License Transfers from Entergy to Northstar ML17229B4842017-08-16016 August 2017 Request for Supplemental Documentation to Support Review of the Physical Security Plan ML16090A0292016-04-0505 April 2016 Request for Additional Information Related to Proposed Changes to Quality Assurance Program Manual, Vermont Yankee Nuclear Power Station ML16077A3452016-03-22022 March 2016 Request for Additional Information Related to 10 CFR 20.2002 Alternate Waste Disposal Request For Vermont Yankee Nuclear Power Station (CAC No. L53116) ML16069A0952016-03-0303 March 2016 Request for 20.2002 Disposal, Request for Additional Information CNRO-2015-00008, Responses to NRC Request for Additional Information Regarding Change in Corporate Form of Entergy Nuclear Holding Company2015-02-18018 February 2015 Responses to NRC Request for Additional Information Regarding Change in Corporate Form of Entergy Nuclear Holding Company ML14318A4002014-12-17017 December 2014 Vermont Yankee Nuclear and Big Rock Point - Request for Additional Information Regarding Change in Corporate Form of Entergy Nuclear Holding Company (Tac Nos. MF3218 - MF3221) ML14289A3942014-11-21021 November 2014 Redacted, Request for Additional Information, Review of Revision 14 to the Physical Security Plan, Safeguards Contingency Plan, and Training and Qualification Plan Pursuant to 10 CFR 50.54(p)(2) BVY 14-069, Request for Exemptions from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E - Supplement 22014-10-21021 October 2014 Request for Exemptions from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E - Supplement 2 ML14192A8352014-08-19019 August 2014 Request for Additional Information, Exemption from 10 CFR 50.47 and Appendix E to Allow Reduced Emergency Plan Requirements and Revise Radiological Emergency Response Plan Consistent with Permanently Defueled Reactor ML14231A0172014-08-13013 August 2014 Technical Specifications Proposed Change No. 309, Defueled Technical Specifications and Revised License Conditions for Permanently Defueled Condition - Supplement 4 ML14163A5902014-07-0101 July 2014 Request for Additional Information, Round 2, Amendment Request to Revise Site Emergency Plan for Permanently Defueled Condition to Reflect Change in On-Shift Staffing and Emergency Response Staffing ML14115A0292014-05-0505 May 2014 Request for Additional Information Regarding License Amendment Request for Emergency Plan Change ML14024A0412014-01-29029 January 2014 Request for Additional Information Regarding Entergy Request for Rescission of and Scheduler Relief from Order EA-13-109 on Reliable Hardened Containment Vents ML13311B0772013-11-26026 November 2013 Interim Staff Evaluation and Request for Additional Information Regarding the Overall Integrated Plan for Implementation of Order EA-12-051, Reliable Spent Fuel Pool Instrumentation ML13304B4182013-11-0101 November 2013 Request for Additional Information Associated with Near-Term Task Force Recommendation 2.3, Seismic Walkdowns ML13218A0122013-08-0606 August 2013 E-mail from R.Guzman to P.Couture, Request for Additional Information - Relief Requests ISI-04 Dated March 27, 2013 - Bvy 13-018 ML13205A1762013-07-24024 July 2013 Supplemental Request for Additional Information - Relief Request ISI-03 ML13179A4622013-07-0505 July 2013 Entergy Nuclear Operations, Inc., Decommissioning Funding Status Report Request for Additional Information Regarding the Decommissioning Funding Status Report ML13186A1142013-07-0505 July 2013 Email from R. Guzman to P.Couture Request for Additional Information - Relief Request ISI-02, Application of Code Case N-716 ML13165A2792013-06-20020 June 2013 Request for Additional Information Overall Integrated Plan for Reliable Spent Fuel Pool Instrumentation (NRC Order EA-12-051) ML13163A2582013-06-17017 June 2013 Request for Additional Information - Response to March 12, 2012, Commission Order EA-12-049 to Modify Licenses Requirements for Mitigating Strategies for Beyond Design Basis External Events ML13149A2652013-05-28028 May 2013 Email from R. Guzman to P. Couture - Request for Additional Information Relief Request ISI-05 (TAC No. MF1194) -Updated RAI-2 (Revision 2) ML13130A0562013-05-0909 May 2013 E-mail from R.Guzman to P.Couture Request for Additional Information - Relief Request RR-P02 Dated February 1, 2013 - Bvy 13-008 ML13130A0472013-05-0808 May 2013 Email from R.Guzman to P.Couture Request for Additional Information - Relief Requests ISI-01 and ISI-03 Dated March 27, 2013 - Bvy 13-018 (TAC Nos. MF1196/1198) ML13119A2462013-04-29029 April 2013 Request for Additional Information, E-mail from R. Guzman to P. Couture Relief Request ISI-05 ML13097A0032013-04-0808 April 2013 Request for Additional Information Change to 10 CFR 50.63 Licensing Basis - SBO EDG ML13087A3922013-04-0202 April 2013 Request for Additional Information to Support the Review of Relief Request RR-P-01 ML13081A7522013-03-22022 March 2013 Email from R.Guzman to P.Couture Request for Additional Information for License Amendment Request to Change 10 CFR 50.63 Licensing Basis ML13077A2062013-03-20020 March 2013 Request for Additional Information Regarding 10 CFR 50.33 Financial Qualification Review ML13067A0912013-03-0808 March 2013 Request for Additional Information Change to TS 3.3.B Inoperable Control Rods ML13050A4692013-02-21021 February 2013 Request for Additional Information Change to Licensing Basis for Station Blackout Diesel Generator ML13018A4592013-01-15015 January 2013 Request for Additional Information - E-mail from R.Guzman to P.Couture Relief Request ISI-PT-02 Alternative to the System Leakage Test for Rv Head Flange Leakoff Lines ML1228403332012-10-10010 October 2012 Request for Additional Information - E-mail from R. Guzman to P. Couture License Amendment Request to Revise License Condition 3.P and 3.Q ML12278A3862012-10-0404 October 2012 ANO 1 & 2, Big Rock, FitzPatrick, GGNS, Indian Point 1, 2, and 3, Palisades, Pilgrim, RBS, Vermont Yankee, and Waterford, Request for Additional Information, Round 2, Amendment Request to Revise QA Program Manual and Staff Qualification TSs ML13070A2032012-09-17017 September 2012 Email from R. Guzman to R. Wanczyk and P. Outure Draft Request for Additional Information - LAR to Revise License Renewal Commitments One Time Inspection Program ML13070A1742012-09-10010 September 2012 Email from R. Guzman to R. Wanczyk Draft Request for Additional Information - LAR to Revise License Renewal Commitments Selective Leaching Program ML12122A8072012-05-0707 May 2012 Request for Additional Information Regarding Physical Security, Safeguards Contingency and Training and Qualification Plan, Revision 11 ML1300902982012-04-10010 April 2012 E-mail from J. Kim to J. Devincentis Request for Additional Information - Rod Worth Minimizer Bypass Allowance Amendment ML1209604492012-04-0505 April 2012 ANO 1 & 2, Big Rock, FitzPatrick, GGNS, Indian Point 1, 2 & 3, Palisades, Pilgrim, RBS, Vermont Yankee, and Waterford - Request for Additional Information, Revise Quality Assurance Program Manual and Staff Qualification Technical Specificat ML12056A0482012-03-12012 March 2012 Enclosure 2 - Recommendation 2.1: Flooding ML12056A0502012-03-12012 March 2012 Enclosure 4 - Recommendation 2.3: Flooding ML12056A0512012-03-12012 March 2012 Enclosure 5 - Recommendation 9.3: Emergency Preparedness ML12056A0492012-03-12012 March 2012 Enclosure 3 - Recommendation 2.3: Seismic 2019-08-26
[Table view] |
Text
June 1, 2006 Mr. Michael Kansler President Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING SEVERE ACCIDENT MITIGATION ALTERNATIVES FOR THE VERMONT YANKEE NUCLEAR POWER STATION (TAC NO. MC9670)
Dear Mr. Kansler:
The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the Severe Accident Mitigation Alternatives (SAMA) analysis submitted by Entergy Nuclear Operations, Inc.
(Entergy), in support of its application for license renewal for the Vermont Yankee Nuclear Power Station (VYNPS), and has identified areas where additional information is needed to complete its review. Enclosed is the NRC staffs request for additional information (RAI).
We request that you provide your responses to these questions within 60 days of the date of this letter, in order to support the license renewal review schedule. If you have any questions, please contact me at 301-415-4049 or via e-mail at RLE@nrc.gov.
Sincerely,
/RA/
Richard L. Emch Jr., Senior Project Manager Environmental Branch B Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-271
Enclosure:
As stated cc w/encl: See next page
June 1, 2006 Mr. Michael Kansler President Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING SEVERE ACCIDENT MITIGATION ALTERNATIVES FOR THE VERMONT YANKEE NUCLEAR POWER STATION (TAC NO. MC9670)
Dear Mr. Kansler:
The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the Severe Accident Mitigation Alternatives (SAMA) analysis submitted by Entergy Nuclear Operations, Inc.
(Entergy), in support of its application for license renewal for the Vermont Yankee Nuclear Power Station (VYNPS), and has identified areas where additional information is needed to complete its review. Enclosed is the NRC staffs request for additional information (RAI).
We request that you provide your responses to these questions within 60 days of the date of this letter, in order to support the license renewal review schedule. If you have any questions, please contact me at 301-415-4049 or via e-mail at RLE@nrc.gov.
Sincerely,
/RA/
Richard L. Emch Jr., Senior Project Manager Environmental Branch B Division of License Renewal Office of Nuclear Reactor Regulation Docket No.: 50-271
Enclosure:
As stated cc w/encl: See next page DISTRIBUTION:
F. Gillespie / P.T. Kuo (RidsNrrDlr) M. Rubin (RidsNrrDraApla)
R. Franovich (RidsNrrDlrRebb) R. Emch B. Palla S. Hernandez R. Schaaf J. Eads david.s.miller@anl.gov C. Anderson, RI D. Pelton, RI J. Shea DLR/REBB Adams Accession No.: ML061520506 Document name: E:\Filenet\ML061520506.wpd OFFICE LA:DLR (ltr only) GE:DLR:REBB PM:DLR:REBB NAME Y. Edmonds S. Hernandez R. Emch DATE 6/ 1 /06 6/ 1 /06 6/ 1 /06 OFFICIAL RECORD COPY
Request for Additional Information Regarding the Analysis of Severe Accident Mitigation Alternatives (SAMAs) for the Vermont Yankee Nuclear Power Station (VYNPS)
- 1. The SAMA analysis is said to be based on the most recent version of the VYNPS Probabilistic Safety Analysis (PSA) (VY04R1). Provide the following information regarding these PSA models:
- a. Table E.1-8 indicates that the core damage frequency (CDF) associated with station blackout sequences (Classes IBE and IBL) is 1.2E-06 per year. This is considerably more than the CDF due to loss of offsite power (LOOP) (7.2E-7 per year in Table E.1-2) and is comparable to the total CDF due to LOOP and loss of alternating current (ac) bus initiating events. Provide the station blackout (SBO)
CDF frequency along with its derivation.
- b. The VYNPS extended power uprate (EPU) application and response to EPU requests for additional information indicate that the VY02R6 model had a CDF of 7.77E-06 per year and that this increased to 8.1E-06 for EPU conditions. This is different from the current value of 5E-06. Provide a summary of the major Levels 1 and 2 PSA versions and their CDFs from the individual plant examination (IPE) to the present, including the version reviewed by the Boiling Water Reactors Owners Group (BWROG). Also, indicate the major changes to each version from the prior version and the major reasons for changes in the CDF.
- c. Discuss the overall conclusion of the BWROG peer review relative to the use of the VYNPS PSA.
- d. Internal flooding initiating events are the dominant contributors to CDF at VYNPS. Briefly describe the internal flooding analysis and its evolution, including internal and external peer reviews, the results of these reviews, and any subsequent model updates. It is noted that the BWROG A and B facts and observations did not include internal flooding. Clarify whether the internal flooding analysis was covered in the BWROG peer review.
- 2. Provide the following information relative to the Level 2 Analysis:
- a. Section E.1.2.2.5 implies that the binning of Level 1 results into plant damage states (PDSs) is the principal means of ensuring the proper Level 1 to Level 2 interface. Section 4.3 of the IPE states that binning is only used to summarize and report the results. Clarify the use of PDSs, including whether the containment event tree is directly linked to the Level 1 models (such that Level 1 failures are recognized by the Level 2 analysis).
- b. Provide the fission product release characteristics for each release category, including fission product release fractions, release times and duration, warning Enclosure
time, release elevation, and energy of release.
- c. Briefly describe the approach used to determine the source terms for each release category. Clarify whether new modular accident analysis program (MAAP) analyses were performed as part of the development of the current model and how the MAAP cases were selected to represent each release category (i.e., based on the frequency-dominant sequence in each category or on a conservative, bounding sequence).
- d. Clarify whether the Level 2 model was included in the BWROG peer review. If so, describe the conclusion relative to this element. If not, describe the internal and external reviews of the Level 2 analysis that have been performed, the results of these reviews, and any subsequent model updates.
- e. Approximately 75 percent of the CDF results in an early release. Explain this relatively high percentage and describe the containment failures/release modes that lead to these releases.
- 3. With regard to the treatment and inclusion of external events in the SAMA analysis:
- a. The environmental report (ER) uses the staffs conclusions from a prior SAMA evaluation to justify that the VYNPS fire CDF is conservative by a factor of three.
Provide a description of the conservatism in the dominant VYNPS fire CDF sequences (e.g., related to fire initiating event frequencies, severity factors, or recovery actions that were not credited) that would support this factor of three.
- b. The seismic CDF at VYNPS is not mentioned in the ER or included within the multiplier used to account for additional SAMA benefits in external events.
Provide the estimated seismic CDF at VYNPS, and an assessment of the impact on the external event multiplier, and on the SAMA analysis results if the seismic CDF is included.
- c. Entergys baseline evaluation of SAMA benefits considers only the risk reduction associated with internal events, and neglects the additional risk reduction that a SAMA could have in external events. Entergy does consider the potential for additional risk reduction in external events, but this is done in the context of an upper bound assessment in which the internal event benefits are increased by a factor of ten to account for the combined effect of external events and analysis uncertainties. The impact of external events should be reflected in the baseline evaluation, rather than combining the impact of external events with the uncertainty assessment. In this regard, provide a revised baseline evaluation (using a 7 percent discount rate) that accounts for risk reduction in both internal and external events, and an alternate case using a 3 percent discount rate.
(Note that the CDF for external events after Entergys adjustment in the ER is 3.7 times higher than the internal events CDF. This would justify a multiplier of 4.7 or 5, rather than a multiplier of 4 as stated in the ER.)
- d. Provide an assessment of the impact on the baseline evaluation results (i.e., the Enclosure
revised baseline evaluation, which accounts for external events) if risk reduction estimates are increased to account for uncertainties in the analysis.
- 4. Provide the following information concerning the MACCS analyses:
- a. Annual meteorology data from the year 2002 were used in the MACCS2 analyses. Provide a brief statement regarding the acceptability of use of this years data rather than a different years data.
- b. For the emergency response assumptions, indicate what percentage of the population was assumed to evacuate.
- c. The MACCS2 analysis for VYNPS is based on a core inventory from a mid-1980 analysis, scaled by the power level for VYNPS. Current boiling-water reactor BWR fuel management practices use longer fuel cycles (time between refueling) and result in significantly higher fuel burnups. The use of the older BWR core inventory, instead of a plant-specific cycle, could significantly underestimate the inventory of long-lived radionuclides important to population dose (such as Sr-90, Cs-134 and Cs-137), and thus impact the SAMA evaluation. Justify the adequacy of the SAMA cost benefit evaluation, given the fuel enrichment and burnup expected at VYNPS.
- 5. Provide the following with regard to the SAMA identification and screening processes:
- a. Section E.1.3.1 indicates that no simple cost-effective enhancements have been identified that will significantly improve the high confidence in low probability of failure (HCLPF) for the condensate storage tank (CST) of 0.25. Provide a cost-benefit analysis for the seismic improvement of the CST similar to that for the other SAMAs.
- b. The individual plant examination of external events (IPEEE) found that the diesel fuel oil storage tank had a HCLPF of 0.29. The ER states that all improvements identified in NUREG-1742 (which include the diesel fuel oil storage tank) have been implemented. Describe the actions taken for the diesel fuel oil storage tank.
- c. The VYNPS IPEEE lists a number of seismic improvement opportunities that are not specifically included in NUREG-1742 (specifically, seismic items 3 (ii) and 7 of IPEEE Section 7.2.2). Confirm that these have been implemented.
- d. Describe any further efforts made to determine if any SAMA candidates exist to address seismic risk beyond those already identified in the IPEEE.
- e. The listing of risk significant terms, provided in Table E.1-3, includes numerous different internal flooding initiators, and the SAMAs considered to address these initiators. For most of these initiators, various Phase I SAMAs are identified as having been implemented, and Phase II SAMA 47 was evaluated to further reduce the internal flooding contribution.
Enclosure
I. For each of the previously implemented changes, clarify whether the change is credited in the current PSA. If not, provide an assessment of the impact of the change on the internal flood CDF. If the change has already been credited, it would not appear to have been completely effective (as evidenced by the high residual risk of the initiating event) and additional SAMAs specific to the flooding event listed in the table could be cost-beneficial.
ii. Phase II SAMA 47 does not appear to address any of the specific internal flooding events listed in the table. Clarify which specific flooding scenario is addressed by SAMA 47.
- f. Provide the current status of the 14 opportunities for improvement identified in the IPEEE for internal flooding, indicating if they have been implemented and if credit is taken for them in the current PSA. For those not implemented, indicate their importance and why they should not be considered as SAMA candidates.
- g. The fire CDF, even after the factor of three reduction, is almost four times the internal events CDF. While the ER states that the improvements that address fire risk at VYNPS recommended in NUREG-1742 have all been implemented, the fire CDF is still substantial. SAMA candidates based on internal risk contributors will not necessarily address the fire risk. For each fire area or dominant fire sequence, explain what measures were taken to further reduce risk, and explain why the fire CDFs can not be further reduced in a cost-effective manner.
- h. In Table E.1-3, the entry for Transient with [power conversion system] available
- initiating event (risk reduction worth (RRW) of 1.0287) cites SAMA 046 to improve main steam isolation valve (MSIV) design. Explain how this impacts the initiator which must have the MSIV open.
I. As an alternative to Phase II SAMA 2, consider operating procedure revisions to provide additional space cooling via the use of portable equipment or by blocking doors open.
- j. Phase II SAMA 59 considers installing instruments for opening safety/relief valves (SRVs) for medium loss-of-coolant accidents (LOCAs). Explain why the benefits of this SAMA in small LOCAs and transients are not included in the benefit assessment.
- k. Table E.1-3 indicates that failure of torus venting components has a RRW of 1.0948. Describe the failures considered in this assessment. Provide an assessment of the costs and benefits associated with: 1) adding redundant components, and 2) converting the vent system to a passive design.
- l. The Table E.1-3 entry for Operator Action: Operator fails to start a [turbine building closed cooling water] (TBCCW) pump indicates that no Phase II SAMAs were recommended. Provide an assessment of the costs and benefits Enclosure
of starting a TBCCW pump automatically.
- 6. Provide the following with regard to the Phase II cost-benefit evaluations:
- a. For a number of the Phase II SAMAs listed in Table E.2-1, the information provided does not sufficiently describe the associated modifications and what is included in the cost estimate. Provide a more detailed description of the modifications for Phase II SAMAs 6, 9, 10, 13, 23, 24, 33, 41, 52, 56, and 63.
- b. Several of the cost estimates provided were drawn from previous SAMA analyses for a dual-unit site (e.g., Peach Bottom). As such, many of those cost estimates reflect the cost for implementation in two units. Since VYNPS is a single-unit site, some of the cost estimates should be one-half of what has been cited (i.e., Phase II SAMAs 29, 35, 40, 49, 50, 51, 52, 53, and 54) while others are specific to a plants design, such as the number of valves or batteries that need to be replaced or added (i.e., Phase II SAMAs 46, 55, and 60). For these cases, provide appropriate (specific to VYNPS) cost estimates. (Note that Phase II SAMAs 49, 50, 51, 53, and 54 are close to being potentially cost-beneficial when a 3 percent real discount rate is used.)
- c. Phase II SAMA 27 uses the same analysis case (Strengthen Containment) as Phase II SAMAs 13, 18, and 19 to evaluate the benefit. Yet, Table E.2-1 lists SAMA 27 as having a CDF reduction of 0.0 percent, while all other SAMAs for this analysis case list a CDF reduction of 7.36 percent. Explain this discrepancy.
- d. For Phase II SAMA 28 and 29 (and others) a 3 percent reduction in CDF was estimated by changing the time available to recover off-site power before high-pressure coolant injection/reactor core isolation coolant (RCIC) are lost from 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. According to Table E.1-8, late SBO sequences (Class IBL) contribute about 17 percent of the total CDF. Explain why only a 3 percent reduction in CDF was estimated for this SAMA.
- e. For Phase II SAMA 42, a 1.3 percent reduction in offsite dose was estimated by reassigning the interfacing-systems loss-of-coolant accident (ISLOCA) sequences to the same end states as medium LOCAs. For Phase II SAMA 43, a 1.2 percent reduction in offsite dose was obtained by eliminating the CDF contribution due to ISLOCA. One would expect the dose reduction for SAMA 43 to be greater than that for SAMA 42. Also, the CDF contribution from ISLOCA is given in Table E.1-2 as 0.32 percent, while the CDF reduction from SAMA 43 is given as 0.83 percent. Explain these apparent discrepancies.
- f. Phase II SAMA 57 is stated to include items which reduce the contribution of anticipated transient without scram. Indicate which items are included.
- g. Phase II SAMA 59 involves providing instrument signals to open SRVs for medium LOCA. Discuss whether the signals already exist in the automatic depressurization system.
Enclosure
- h. Phase II SAMA 63, Control Containment Venting Within a Narrow Band of Pressure, is intended to eliminate failures associated with successful venting.
The benefit of this SAMA was determined by reducing the operator failure to vent by a factor of three. It is not clear that reducing the failure to vent probability is related to the actual benefit from this SAMA. Also, the cost of $250,000 appears high for what appears to be a procedure and training issue. Justify the benefit and cost for this SAMA.
I. Phase II SAMA 64, Provide Cross Tie from the residual heat removal service water (RHRSW) System to residual heat removal Loop B, has an estimated CDF reduction of 0.2 percent. The description given in Table E.1-3 for term diesel fire pump and John Deere Diesel for Alternate Injection, though, indicates that this term involves a cross tie for fire protection to RHRSW and has a RRW of 1.0584. Describe this SAMA more completely and indicate why the reduction in CDF is so small relative to the RRW.
- j. In Table E.2-1, the percent change in CDF and population dose is reported for each analysis case. However, the change in the offsite economic cost risk (OECR) is not reported. Provide the change in the OECR for each analysis case.
- 7. For certain SAMAs considered in the ER, there may be lower-cost alternatives that could achieve much of the risk reduction at a lower cost. In this regard, discuss whether any lower-cost alternatives to those Phase II SAMAs considered in the ER would be viable and potentially cost-beneficial. Evaluate the following SAMAs (previously found to be potentially cost-beneficial at other plants), or indicate if the particular SAMA has already been considered. If the latter, indicate whether the SAMA has been implemented or has been determined to not be cost-beneficial at VYNPS:
- a. Use portable generator to extend the coping time in loss of ac power events (to power battery chargers.
- b. Enhance direct current (dc) power availability (provide cables from diesel generator or another source to directly power battery chargers).
- c. Provide alternate dc feeds (using a portable generator) to panels supplied only by dc bus.
- d. Modify procedures and training to allow operators to cross-tie emergency ac buses under emergency conditions which require operation of critical equipment.
- e. Develop guidance/procedures for local, manual control of RCIC following loss of dc power.
Enclosure
Vermont Yankee Nuclear Power Station cc:
Regional Administrator, Region I Mr. James M. DeVincentis U. S. Nuclear Regulatory Commission Manager, Licensing 475 Allendale Road Vermont Yankee Nuclear Power Station King of Prussia, PA 19406-1415 P.O. Box 0500 185 Old Ferry Road Mr. David R. Lewis Brattleboro, VT 05302-0500 Pillsbury, Winthrop, Shaw, Pittman, LLP 2300 N Street, N.W. Resident Inspector Washington, DC 20037-1128 Vermont Yankee Nuclear Power Station U. S. Nuclear Regulatory Commission Mr. David OBrien, Commissioner P.O. Box 176 Vermont Department of Public Service Vernon, VT 05354 112 State Street Montpelier, VT 05620-2601 Director, Massachusetts Emergency Management Agency Mr. James Volz, Chairman ATTN: James Muckerheide Public Service Board 400 Worcester Rd.
State of Vermont Framingham, MA 01702-5399 112 State Street Montpelier, VT 05620-2701 Mr. Jonathan M. Block, Esq.
Main Street Operating Experience Coordinator P.O. Box 566 Vermont Yankee Nuclear Power Station Putney, VT 05346-0566 320 Governor Hunt Road Vernon, VT 05354 Mr. John F. McCann Director, Licensing Mr. G. Dana Bisbee, Esq. Entergy Nuclear Operations, Inc.
Deputy Attorney General 440 Hamilton Avenue 33 Capitol Street White Plains, NY 10601 Concord, NH 03301-6937 Mr. Gary J. Taylor Chief, Safety Unit Chief Executive Officer Office of the Attorney General Entergy Operations One Ashburton Place, 19th Floor 1340 Echelon Parkway Boston, MA 02108 Jackson, MS 39213 Ms. Deborah B. Katz Mr. John T. Herron Box 83 Sr. VP and Chief Operating Officer Shelburne Falls, MA 01370 Entergy Nuclear Operations, Inc.
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Vermont Yankee Nuclear Power Station cc:
Mr. Christopher Schwartz Vice President, Operations Support Mr. William K. Sherman Entergy Nuclear Operations, Inc. Vermont Department of Public Service 440 Hamilton Avenue 112 State Street White Plains, NY 10601 Drawer 20 Montpelier, VT 05620-2601 Mr. Michael J. Colomb Director of Oversight Mr. Michael D. Lyster Entergy Nuclear Operations, Inc. 5931 Barclay Lane 440 Hamilton Avenue Naples, FL 34110-7306 White Plains, NY 10601 Ms. Charlene D. Faison Mr. Travis C. McCullough Manager, Licensing Assistant General Counsel 440 Hamilton Avenue Entergy Nuclear Operations, Inc. White Plains, NY 10601 440 Hamilton Avenue White Plains, NY 10601 Mr. James Ross Nuclear Energy Institute Mr. Jay K. Thayer 1776 I Street, NW, Suite 400 Site Vice President Washington, DC 20006-3708 Entergy Nuclear Operations, Inc.
Vermont Yankee Nuclear Power Station Mr. Peter Deyo P.O. Box 0500 Chairman, Vernon Select Board 185 Old Ferry Road 567 Governor Hunt Road Brattleboro, VT 05302-0500 Vernon, VT 05354 Mr. James H. Sniezek Mr. Jerry Remillard 5486 Nithsdale Drive Brattleboro Town Manager Salisbury, MD 21801 230 Main Street, Suite 208 Brattleboro, VT 05301 Ms. Stacey M. Lousteau Treasury Department Mr. Steven A. Steidle Entergy Services, Inc. Chair, Brattleboro Select Board 639 Loyola Avenue 108 Meetinghouse Lane New Orleans, LA 70113 Brattleboro, VT 05301-8985 Mr. Raymond Shadis Sen. Roderick M. Gander New England Coalition Senator, Windham District Post Office Box 98 43 Tyler Street Edgecomb, ME 04556 Brattleboro, VT 05301 Mr. James P. Matteau Sen. Jeanette K. White Executive Director Senator, Windham District Windham Regional Commission 35A Old Depot Road 139 Main Street, Suite 505 Putney, VT 05346 Brattleboro, VT 05301
Mr. Ed Anthes Vermont Nuclear Free by 2012 PO Box 6325 Brattleboro, VT 05302 Mr. John D. Smith Chairman Board of Selectmen PO Box 13 Hinsdale, NH 03451 Ms. Diana Sidebotham The New England Coalition PO Box 545 Brattleboro, VT 05302