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MONTHYEAR05000423/LER-2005-001, Regarding Hydrogen Recombiners Out of Service2005-09-0101 September 2005 Regarding Hydrogen Recombiners Out of Service Project stage: Request ML0603704632006-02-0909 February 2006 RAI, Response to GL-2004-02, Potential Impact to Debris Blockage on Emergency Recirculation During Design-Basis Accidents at Pressurized-Water Reactors Project stage: RAI ML0603801882006-02-0909 February 2006 RAI Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design-Basis Accidents at Pressurized Water Reactors (Tac MC4694) Project stage: RAI ML0603801992006-02-0909 February 2006 RAI Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design-Basis Accidents at Pressurized Water Reactors Project stage: RAI ML0721205432007-08-0909 August 2007 Draft Open Items from Staff Audit of Corrective Actions to Address GL 2004-02 Project stage: Draft Other ML0722706242007-08-15015 August 2007 MR-I-07-0018: Dominion Promotes David Christian to President/Chief Nuclear Officer Project stage: Request ML0722905502007-08-30030 August 2007 GSI-191, Generic Letter 2004-02 Corrective Actions Audit Report Project stage: Other ML0722905312007-08-30030 August 2007 Report on Results of Staff Audit of Corrective Actions to Address Generic Letter 2004-02 Project stage: Other ML0729706052007-10-24024 October 2007 Exigent License Amendment Request Re Alternative Containment Analysis Methodology Supporting Information - Gothic Model Input Files Project stage: Request ML0731001672007-11-15015 November 2007 Report on Results of Staff Audit of Corrective Actions to Address Generic Letter 2004-02 Project stage: Other ML0731905532007-11-15015 November 2007 Request for Extension of Completion Dates for Corrective Actions Regarding NRC Generic Letter 2004-02 Project stage: Request ML0727404002007-11-15015 November 2007 Corrective Actions for Generic Letter 2004-02 Project stage: Other ML0734505942007-12-13013 December 2007 Approval of Extension of Completion Dates for Corrective Actions of Generic Letter 2004-02 Project stage: Other ML0806503142008-02-29029 February 2008 NRC Generic Letter 2004-02 Supplemental Response, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Request ML0806505622008-02-29029 February 2008 Supplemental Response to NRC GL-2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Request ML0806505632008-02-29029 February 2008 Supplemental Response to NRC GL-04-002, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Request ML0814905722008-05-29029 May 2008 Request for Extension of Completion Dates for Generic Letter 2004-02 Corrective Actions Project stage: Other ML0818302472008-07-0101 July 2008 Request for Extension of Completion Dates for Generic Letter 2004-02 Corrective Actions Project stage: Other ML0827300222008-09-29029 September 2008 Request for Extension of Completion Dates for Generic Letter 2004-02 Corrective Actions Project stage: Other ML0832304692008-12-17017 December 2008 Request for Additional Information, GL 2004-02 Project stage: RAI ML0904007422009-02-0909 February 2009 Enclosure 1. North Anna Power Station Audit Report Corrective Actions for Generic Letter 2004-02 Chemical Effects Project stage: Other ML0904007862009-02-0909 February 2009 Enclosure 2 Report of the NRC Staffs Visit to Chalk River, Canada, to Observe Integrated Chemical Effects Head Loss Testing Performed for Pressurized-water Reactors Operated by Dominion Project stage: Other ML0904106182009-02-10010 February 2009 Audit Report Corrective Actions for Generic Letter 2004-02: Chemical Effects Project stage: Other ML0904106022009-02-10010 February 2009 Report on Results of the Nuclear Regulatory Commission Staffs Audit of Chemical Effects - Related Actions to Address Generic Letter 2004-02 Project stage: Other ML0906410382009-02-27027 February 2009 Updated Supplemental Response to NRC Generic Letter 2004-02 Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Request ML0913500732009-05-28028 May 2009 Request for Additional Information Related to Generic Letter 2004-02 Project stage: RAI ML1000700682010-02-0404 February 2010 Request for Additional Information Regarding Generic Letter 2004-02 Project stage: RAI ML1003314992010-03-0101 March 2010 Notice of Conference Call with Dominion Nuclear Connecticut, Inc., to Discuss Millstone Power Station, Unit Nos. 2 and 3 Generic Letter 2004-02 Supplemental Responses Project stage: Other ML1008204222010-03-26026 March 2010 Notice of Conference Call with Dominion Nuclear Connecticut, Inc. to Discuss Millstone Power Station, Unit Nos 2 and 3 Generic Letter 2004-02 Supplemental Responses Project stage: Other ML1009804152010-04-0808 April 2010 Draft Millstone GL2004-02 Supplemental Responses to Support Public Teleconference on 4/08 Project stage: Request ML1011705752010-05-0505 May 2010 Summary of Teleconference with DNC to Discuss Generic Letter 2004-02 Supplemental Response Request for Additional Information Project stage: RAI ML1012506232010-05-24024 May 2010 Summary of Meeting with Dominion Nuclear Connecticut, Inc. (DNC) to Discuss Generic Letter 2004-02 Supplemental Response Request for Additional Information Project stage: RAI ML1013700502010-05-25025 May 2010 Forthcoming Conference Call with Dominion Nuclear Connecticut, Inc. to Discuss Millstone Power Station, Unit Nos. 2 and 3 Generic Letter 2004-02 Supplemental Responses Project stage: Other ML1015305562010-06-0202 June 2010 Mps GL-04-002 Draft RAI Responses/Public Telecon Handouts Project stage: Request ML1015906482010-06-30030 June 2010 Summary of Meeting with Dominion Nuclear Connecticut, Inc., (DNC) to Discuss Generic Letter 2004-02 Supplemental Response Request for Additional Information Project stage: RAI ML1018005132010-07-0101 July 2010 Notice of Forthcoming Public Meeting with Dominion Nuclear Connecticut, Inc. to Discuss Millstone Power Station, Unit No. 3 Generic Letter 2004-02 Supplemental Response Project stage: Meeting ML1020104132010-07-0808 July 2010 Response to Request for Additional Information Re Generic Letter 2004-02 Project stage: Response to RAI ML1019505052010-07-13013 July 2010 MPS3 RAI 6 Project stage: Request ML1019502842010-07-14014 July 2010 Notice of Forthcoming Public Teleconference with Dominion Nuclear Connecticut, Inc. to Discuss Millstone Power Station, Unit No. 3 Generic Letter 2004-02 Supplemental Response Project stage: Meeting ML1020102612010-07-29029 July 2010 Summary of July 13, 2010, Meeting with DNC to Discuss Generic Letter 2004-02 Supplemental Response Request for Additional Information Project stage: RAI ML1021404372010-08-10010 August 2010 Generic Letter 2004-02 Supplemental Response Project stage: Other ML1022201102010-09-14014 September 2010 July 28, 2010, Summary of Teleconference with DNC to Discuss Generic Letter 2004-02 Supplemental Response Request for Additional Information Project stage: RAI ML1026402102010-09-16016 September 2010 Response to Request for Additional Information Regarding Generic Letter 2004-02 Project stage: Response to RAI ML1031202422010-11-0808 November 2010 Notice of Teleconference with Dominion Nuclear Connecticut, Inc. to Discuss Millstone Power Station, Unit No. 3 Generic Letter 2004-02 Supplemental Response Project stage: Meeting ML1034706502010-12-13013 December 2010 Draft Response to GL2004-02 RAI No. 6 Project stage: Request ML1034807622011-01-12012 January 2011 November 8, 2010 Summary of Teleconference W/ DNC to Discuss Generic Letter 2004-02 Supplemental Response Request for Additional Information Project stage: RAI 2010-12-13
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 May 24,2010 LICENSEE:
Dominion Nuclear Connecticut, Inc. (DNC)
FACILITY:
Millstone Power Station, Unit Nos. 2 and 3
SUBJECT:
SUMMARY
OF APRIL 20,2010, MEETING WITH DNC TO DISCUSS GENERIC LETTER 2004-02 SUPPLEMENTAL RESPONSE REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MC4694 AND MC4695)
On April 20, 2010, a Category 1 public teleconference was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Dominion Nuclear Connecticut, Inc.
(DNC). The purpose of the meeting was to discuss remaining issues identified during NRC staff review of the Millstone Power Station, Unit Nos. 2 and 3 (MPS2 and MPS3, respectively)
Generic Letter (GL) 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized-Water Reactors," supplemental response. The meeting was a follow-up to the April 8, 2010, Category 1 public teleconference on the same subject. A summary of the April 8, 2010, meeting can be found at Agencywide Documents Access and Management System (ADAMS) Accession No. ML101170575.
The meeting was intended to give DNC the opportunity to explain its proposed approach for responding to the NRC staff's request for additional information (RAI) dated February 4, 2010 (ADAMS Accession No. ML100070068). The meeting was also intended to give the NRC staff the opportunity to provide feedback regarding the licensee's proposed approach and to provide a mechanism for the NRC and DNC to come to mutual agreement on the remaining steps toward resolution of the outstanding GL 2004-02 issues for MPS2 and MPS3 No proprietary information was discussed at the meeting. No members of the public were in attendance. A list of attendees is provided in the enclosure.
The licensee provided draft responses to the NRC staff's RAI dated April 8, 2010 (ADAMS Accession No. ML1009804150).
The following summarizes the discussion of each proposed response discussed at the April 20, 2010, meeting:
1.0 Millstone Power Station, Unit NO.2 1.1 Request For Additional Information No. 14 The NRC staff does not agree with DNC's calcium phosphate solubility argument; however, the NRC staff believes that there is enough conservatism in ONC's testing to preclude the need for the calcium phosphate solubility argument. DNC intends to remove the calcium solubility argument from its response and focus the response on the existing conservatisms in the calculation that determined the amount of plant-specific
- 2 dissolved calcium. ONC agreed to provide a new draft response to this request for additional information. This new draft response will be discussed at a future public teleconference.
1.2 Request For Additional Information No. 15 The NRC staff stated the proposed response is acceptable.
2.0 Millstone Power Station, Unit No.3 2.1 Request For Additional Information NO.6 In response to a question from ONC, the NRC staff stated that applying conservatisms to demonstrate the Rig 33 test results are acceptable for MPS3 is an acceptable approach to resolve the remaining issues associated with this request for additional information.
ONC agreed to provide a new draft comprehensive response to this request for additional information. This new draft response will be discussed at a future public teleconference.
2.2 Request For Additional Information No. 16 The NRC staff does not agree with ONC's calcium phosphate solubility argument; however, the NRC staff believes that there is enough conservatism in ONC's testing to preclude the need for the calcium phosphate solubility argument. ONC intends to remove the calcium solubility argument from its response and focus the response on the existing conservatisms in the calculation that determined the amount of plant-specific dissolved calcium. ONC agreed to provide a new draft response to this request for additional information. This new draft response will be discussed at a future public teleconference.
2.3 Request For Additional Information No. 17 The NRC staff stated the proposed response is acceptable.
- 3 If you have any questions, please contact me at 301-415-1603.
Sinx,elY,
{JJ Carleen J. Sande,Project Manager Plant Licensing r nch 1-2 Division of Oper ng Reactor Licensing Office of Nuclear Reactor Regulation Docket l\\Ios. 50-336 and 50-423
Enclosure:
As stated cc w/encls: Distribution via Listserv
LIST OF ATTENDEES APRIL 20,2010, MEETING WITH DOMINION NUCLEAR CONNECTICUT, INC. (DNC)
MILLSTONE POWER STATION, UNIT NOS. 2 AND 3 GENERIC LETTER 2004-02 SUPPLEMENTAL RESPONSE William Bartron Martin Legg Clark Maxson Ronald Tooker Gary Nayler Joseph Rigatti NRC Lawrence Doerflein, RI Paul Klein, NRR Carleen Sanders, NRR Michael Scott, I\\lRR Stephen Smith, NRR Robert Taylor, NRR Mathew Yoder, NRR Enclosure
- 3 If you have any questions, please contact me at 301-415-1603.
Sincerely,
/raj Carleen J. Sanders, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-336 and 50-423
Enclosure:
As stated cc w/encls: Distribution via Listserv DISTRIBUTION:
PUBLIC Branch Reading RidsAcrsAcnw_MailCTR Resource RidsNrrDorlLpll-2 Resource RidsOgcRp Resource RidsNrrPMMilistone Resource RidsNrrLAABaxter Resource RidsRgnlMailCenter Resource LTrocine, EDO Region 1 CSteger, NRR SSmith, NRR MScott, NRR PKlein, NRR MYoder, NRR JLehning, NRR ADAMS Accession Nos.: Meeting Notice; Meeting Handout IVIL1009804150; Meeting Summary ML101250623 OFFICE DORLlLPL1-2/PM DORLlLPL1-2/LA NRR/SSIB/BC DORLlLPL1-2/BC NAME CSanders ABaxter MScott HChernof DATE 5/18/10 5/18/10 5/24/10 5/24/10 Official Record Copy