Letter Sequence RAI |
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Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance, Acceptance
Results
Other: ML100980062, ML101040675, ML101050307, ML101110054, ML101170056, ML101460059, ML103230048, ML103510668, ML110180524, ML111600187, ML11165A023, ML111750188, ML111821975, ML11252B053, ML11291A157, ML11307A393, ML11335A127, ML12044A329, ML12081A275, ML12082A209, ML12181A020
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MONTHYEARML1009205462010-03-31031 March 2010 Comment (1) of John D. Greenhill on Behalf of Himself Regarding Re-Licensing of Columbia Generating Station Project stage: Request ML1009800622010-03-31031 March 2010 Comment (2) of Jerome Delvin Supporting Columbia Generating Station'S License Renewal Project stage: Other ML1010406752010-04-0202 April 2010 Comment (3) of David V. Taylor, Et. Al., on Behalf of Washington State Legislature, Supporting Energy Northwest'S License Renewal for Columbia Generating Station to Extend Operating License Through 2043 Project stage: Other ML1012410372010-04-0606 April 2010 Transcript of Columbia Generating Station License Renewal Process and Environmental Scoping Public Meeting, Evening Session, 04/06/2010, Pages 1-30 Project stage: Meeting ML1010503072010-04-0606 April 2010 Comment (4) of James O. Luce, on Behalf of Washington State Energy Facility Site Evaluation Council, on Columbia Generating Station License Renewal Application Project stage: Other ML1019605472010-04-0606 April 2010 License Renewal, Written Comments of Gene Kinsey from Public Scoping Meeting Project stage: Meeting ML1012410022010-04-0606 April 2010 Transcript of Columbia Generating Station License Renewal Process and Environmental Scoping Public Meeting, Afternoon Session, April 06/2010, Pages 1-39 Project stage: Meeting ML1011100522010-04-0707 April 2010 Comment (5) of Brad Peck, Rick Miller, & Robert E. Koch Supporting Energy Northwest'S Columbia Generating Station License Renewal Application to the Nuclear Regulatory Commission Project stage: Request ML1011604352010-04-0909 April 2010 G20100244/LTR-10-0176/EDATS: SECY-2010-0219 - Ltr., Russell Jim, Storage of Spent Power Reactor Fuel at Columbia Generating Station Project stage: Request ML1011100532010-04-0909 April 2010 Comment (6) of Tim Sheldon Supporting Renewal of the Operating License for the Columbia Generating Station Project stage: Request ML1011700562010-04-12012 April 2010 Comment (8) of Washington State Senate, Supporting License Renewal of Columbia Generating Station Operated by Energy Northwest Project stage: Other ML1011100542010-04-12012 April 2010 Comment (7) of Larry Haler and Brad Klippert on Behalf of the Wa House of Representatives Supporting License Renewal of the Columbia Generating Station Operated by Energy Northwest Project stage: Other ML1011804592010-04-19019 April 2010 Comment (9) of Senator Phil Rockefeller, Washington State Adding His Voice to Those Strongly Supporting Relicensing of Columbia Generating Station as an Essential Asset in Washington'S Energy Resources Project stage: Request ML1032300482010-04-21021 April 2010 Comment (11) of Various Individuals on Behalf of Energy Northwest Re Environmental Review of Columbia Generating Station'S License Renewal Project stage: Other ML1012503142010-05-10010 May 2010 04/06/2010 - Meeting Summary-CGS License Renewal Overview and Environmental Scoping Meetings Project stage: Meeting ML1012505192010-05-10010 May 2010 04/06/2010 - Summary of Public License Renewal Overview and Environmental Scoping Meetings Related to the Review of the Columbia Generating Station License Renewal Application (TAC Nos. ME3058 and ME3121) Project stage: Meeting ML1014600592010-05-14014 May 2010 Comment (10) of Gary Robertson on Behalf of Washington State, Department of Health, on Environmental Review of Columbia Generating Station'S License Renewal Project stage: Other ML1017604212010-07-0101 July 2010 Request for Additional Information for the Review of the Columbia Generating Station License Renewal Application - SAMA Review Project stage: RAI ML1017506552010-07-0202 July 2010 Request for Additional Information for the Review of the Columbia Generating Station License Renewal Application - Environmental Review Project stage: RAI ML1018100912010-07-0808 July 2010 Request for Additional Information Related to the Environmental Site Audit for Columbia Generating Station License Renewal Project stage: RAI ML1018802892010-07-15015 July 2010 June 28, 2010, Summary of Telephone Conference Call Held Between NRC and Energy Northwest Concerning Draft Requests for Additional Information Pertaining to the SAMA Review of the Columbia Generating Station License Renewal Application Project stage: Draft RAI GO2-10-105, Response to Request for Additional Information License Renewal Application2010-08-0505 August 2010 Response to Request for Additional Information License Renewal Application Project stage: Response to RAI GO2-10-108, Response to Request for Additional Information, License Renewal Application2010-08-0909 August 2010 Response to Request for Additional Information, License Renewal Application Project stage: Response to RAI ML1023802882010-08-0909 August 2010 Response to Request for Additional Information License Renewal Application, Enclosure B, Terrestrial Ecology Documents Project stage: Response to RAI ML1021003032010-08-10010 August 2010 Schedule Revision for the Environmental Review of the Columbia Generating Station License Renewal Application Project stage: Approval GO2-10-138, Response to Request for Additional Information on License Renewal Application2010-09-17017 September 2010 Response to Request for Additional Information on License Renewal Application Project stage: Response to RAI ML1026302282010-10-0101 October 2010 04/27/10 Summary of Tribal Outreach Informational Meeting Concerning Columbia Generating Station License Renewal and Hanford Low Level Waste Project stage: Meeting ML1028709842010-11-10010 November 2010 Request for Additional Information for the Review of the Columbia Generating Station License Renewal Application-Sama Review Project stage: RAI ML1035106682010-12-17017 December 2010 E-mail Dtd 12/17/2010, Subj: NRC Ba/Efh Assessment for Columbia Generating Station License Renewal Review Project stage: Other GO2-10-178, Response to Request for Additional Information License Renewal Application2010-12-21021 December 2010 Response to Request for Additional Information License Renewal Application Project stage: Response to RAI ML1027702322010-12-29029 December 2010 Issuance of Environmental Scoping Summary Report Associated with the Staff'S Review of the Application by Energy Northwest for Renewal of the Operating License for Columbia Generating Station Project stage: Approval ML1034305262011-01-10010 January 2011 Schedule Revision for the Review of the Columbia Generating Station License Renewal Application (TAC Nos. ME3058, ME3121) Project stage: Approval ML1034001632011-01-18018 January 2011 06/08/10 - 06/10/10 Summary of Site Visit in Support of the Environmental Review of the License Renewal Application for Columbia Generating Station Project stage: Approval ML1101805242011-01-18018 January 2011 License Renewal, e-mail Dated 1/18/2011 Project stage: Other GO2-11-032, Response to Request for Additional Information for the Review of the License Renewal Application2011-01-28028 January 2011 Response to Request for Additional Information for the Review of the License Renewal Application Project stage: Response to RAI ML1104005102011-03-0101 March 2011 1/19/11 Summary of Telephone Conference Call Held Between USNRC and Energy Northwest Concerning Requests for Additional Information Pertaining to the SAMA Review of the Columbia Generating Station License Renewal Application Project stage: RAI ML1106703792011-03-10010 March 2011 Request for Additional Information for the Review of the Columbia Generating Station License Renewal Application - Severe Accident Mitigation Alternative Review Project stage: RAI GO2-11-082, Environmental Authorizations for CGS Operations2011-04-20020 April 2011 Environmental Authorizations for CGS Operations Project stage: Request GO2-11-092, Response to Request for Additional Information Related to the Review of the Severe Accident Mitigation Alternative Analysis2011-05-0606 May 2011 Response to Request for Additional Information Related to the Review of the Severe Accident Mitigation Alternative Analysis Project stage: Response to RAI ML11157A0362011-06-0505 June 2011 Letter from Heart of America Northwest Public Involvement Lists and Notices, Including Requests to Be Added to Lists and Requests for Hearings on the Draft EIS for Columbia Generating Station Project stage: Request ML1116001872011-06-0909 June 2011 E-mail Dtd 6/9/11, Subj: Energy Nw, Columbia Generating Station Public Involvement and Notice List, Request for Hearings Re EIS Project stage: Other ML11151A2222011-06-14014 June 2011 Schedule Revision for the Environmental Review of the Columbia Generating Station License Renewal Application Project stage: Approval ML1116802212011-06-16016 June 2011 Request for List of Protected Species within the Area Under Evaluation for the Columbia Generating Station License Renewal Application Review Project stage: Request ML1117501882011-06-23023 June 2011 Environmental Authorizations for Current CGS Operations Project stage: Other ML1118219752011-06-27027 June 2011 E-mail Dtd 6/27/2011, Subj: NRC Ba/Efh Assessment for Columbia Generating Station License Renewal Review Project stage: Other ML11165A0232011-08-23023 August 2011 Biological Assessment and Essential Fish Habitat Assessment for License Renewal of Columbia Generating Station Project stage: Other ML11214A2372011-08-30030 August 2011 RAI for the Review of the Columbia Generating Station LRA-Severe Accident Mitigation Alternative Review Project stage: RAI ML11227A0072011-08-31031 August 2011 NUREG-1437 Supp 47 Dfc Generic Environmental Impact Statement for License Renewal of Nuclear Plants Regarding Columbia Generating Station. Project stage: Acceptance Review ML11252B0532011-09-0101 September 2011 Comment (1) of Robert G. Whitlam, on Behalf of Washington Dept of Archaeology & Historic Preservation Columbia Generating Station License Renewal Project stage: Other ML1126306032011-09-20020 September 2011 Meeting Slides Preliminary Site-Specific Results of the License Renewal Environmental Review for Columbia Generating Station Project stage: Meeting 2010-08-05
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Category:Conference/Symposium/Workshop Paper
MONTHYEARML12157A2722012-06-11011 June 2012 5/31/2012 Summary of Telephone Conference with Licensees Regarding Near Term Task Force Recommendation 2.1 Seismic Reevaluations - Diablo Canyon, 1 and 2, San Onofre, Units 2 and 3, Columbia Generating Station, and Palo Verde, Units 1, 2, a ML11216A2532011-08-11011 August 2011 August 3, 2011, Summary of Telephone Conference Call Held Between the NRC and Energy Northwest, Concerning the Response to the Request for Additional Information Pertaining to the Columbia Generating Station, LRA ML11217A0222011-08-11011 August 2011 8/3-4/11, Summary of Telephone Conference Call Held Between Nuclear Regulatory Commission and Energy Northwest, Concerning the Response to the Request for Additional Information Pertaining to the Columbia Generating Station, LRA ML11220A0102011-08-11011 August 2011 February 3, 2011, Summary of Telephone Conference Call Held Between NRC and Energy Northwest, Concerning the Responses to the RAI Pertaining to the Columbia Generating Station, LRA ML11208B0492011-08-0202 August 2011 07/19/11 Summary of Telephone Conference Call Held Between the NRC and Energy Northwest, Concerning the Request for Additional Information Pertaining to the Columbia Generating Station, License Renewal Application (TAC No. Me3058) ML11188A2382011-07-12012 July 2011 07/06/2011-Summary of Telephone Conference Call Between NRC and Energy Northwest, Concerning the Request for Additional Information Response Pertaining to the Columbia Generating Station, License Renewal Application ML1104005102011-03-0101 March 2011 1/19/11 Summary of Telephone Conference Call Held Between USNRC and Energy Northwest Concerning Requests for Additional Information Pertaining to the SAMA Review of the Columbia Generating Station License Renewal Application ML1105401262011-02-28028 February 2011 2/17/11 Summary of Telephone Conference Call Held Between the USNRC and Energy Northwest, Concerning the Responses to the Request for Additional Information Pertaining to the Columbia Generating Station, License Renewal Application ML1102603802011-02-16016 February 2011 January 24, 2011, Summary of Telephone Conference Call Held Between U.S. Nuclear Regulatory Commission and Energy Northwest, Concerning the Request for Additional Information Pertaining to the Columbia Generating Station ML1102402022011-02-0303 February 2011 01/20/2011 Summary of Telephone Conference with NRC and Energy Northwest, Concerning the Request for Additional Information Pertaining to the Columbia Generating Station, License Renewal Application ML1101405882011-01-31031 January 2011 01/12/11 Summary of Telephone Conference Call Held Between NRC and Energy Northwest, Concerning the Responses to RAI Pertaining to the Columbia Generating Station. License Renewal Application ML1030004792010-11-19019 November 2010 Summary of Telephone Conference Call Between the USNRC and Energy Northwest, Concerning the Draft Request for Additional Information Pertaining to the Columbia Generating Station, LRA ML1027902232010-10-25025 October 2010 10/05/2010 Summary of Telephone Conference Call Held Between NRC and Energy Northwest, Concerning the Draft Rao Pertaining to the Columbia Generating Station, License Renewal Application ML1028701932010-10-25025 October 2010 9/22/10 Summary of Telephone Conference Call Held Between the USNRC and Energy Northwest Concerning the D-RAI Pertaining to the Columbia Generating Station, License Renewal Application ML1028702452010-10-25025 October 2010 October 13, 2010, Summary of Teleconference Held Between the U.S. NRC and Energy Northwest, Concerning the Draft Request for Additional Information Pertaining to the Columbia Generating Station License Renewal Application ML1024507562010-09-16016 September 2010 8/12/10, Summary of Telephone Conference Call Held on Between NRC and Energy Northwest, Concerning the RAI Pertaining to the Columbia Generating Station, LRA ML1018802892010-07-15015 July 2010 June 28, 2010, Summary of Telephone Conference Call Held Between NRC and Energy Northwest Concerning Draft Requests for Additional Information Pertaining to the SAMA Review of the Columbia Generating Station License Renewal Application ML13119A5812008-04-0909 April 2008 April 9, 2008, Conference Call Summary Hydrogen Event at CSG 2012-06-11
[Table view] Category:Meeting Summary
MONTHYEARML23297A2642023-11-0606 November 2023 October 5, 2023, Summary of Teleconference with Energy Northwest Regarding Proposed License Amendment Request to Revise the Emergency Plan for Columbia Generating Station ML23156A2822023-06-0505 June 2023 Summary of Meeting with Q & a Session to Discuss the 2022 Annual Assessment of Safety Performance at CGS ML22147A0932022-06-0606 June 2022 2021 Annual Assessment Public Meeting Summary ML22067A1832022-03-10010 March 2022 Summary of Energy Northwest Regulatory Conference Columbia Generating Station, Airborne Radioactivity Event Resulting in Preliminary White Finding, March 1, 2022 ML21321A0422021-12-13013 December 2021 Summary of October 22, 2021, Teleconference Meeting with Energy Northwest Regarding Proposed License Amendment Requests to Adopt Technical Specifications Task Force (TSTF)-505, and 10 CFR 50.69 Categorization Program ML21140A3892021-05-24024 May 2021 Riv Column 1 EOC 2020 Public Meeting Summary ML21112A3512021-05-0303 May 2021 Summary of March 31, 2021, Pre-Application Teleconference with Energy Northwest to Discuss a Planned LAR Deletion of Certain License Conditions Relating to License Renewal Commitments for Columbia Generating Station ML20322A0362020-11-19019 November 2020 Summary of October 19, 2020, Presubmittal Teleconference with Energy Northwest Regarding Proposed COVID-19 Related Biennial Emergency Preparedness Exercise Exemption Request for Columbia Generating Station ML20314A0462020-11-0909 November 2020 Summary of November 4, 2020, NRC-NMFS Teleconference on Columbia Entrainment Study ML20189A2832020-07-0707 July 2020 Summary of Region IV Annual Assessment Public Meeting ML20101L5352020-04-14014 April 2020 Summary of April 6, 2020, Presubmittal Teleconference Meeting with Energy Northwest, to Discuss a Technical Specification Change License Amendment Request for the Columbia Generating Station ML19030A2152019-02-12012 February 2019 1/24/19, Summary of Presubmittal Teleconference Meeting with Energy Northwest, to Discuss a Shield Wall Deferral License Amendment Request for the Columbia Generating Station ML19030A3192019-02-12012 February 2019 1/17/2019, Summary of Presubmittal Meeting with Energy Northwest, to Discuss an Emergency Control Room Chiller License Amendment Request at Columbia Generating Station ML18354B0992019-01-0303 January 2019 Summary of Pre-Submittal Meeting with Energy Northwest, to Discuss an Emergency Control Room Chiller License Amendment Request for the Columbia Generating Station ML16266A3712016-09-29029 September 2016 Summary of Public Meeting with Energy Northwest to Discuss Upcoming License Amendment Request Regarding Change in Completion Time for Residual Heat Removal Pump a Repair for Columbia Generating Station ML16167A4602016-08-23023 August 2016 Summary of Closed Meeting with Representatives of the Us Army Corps of Engineers, Bureau of Reclamation, and Energy Northwest to Discuss the Flood Analysis Associated with Columbia Generating Station ML16193A0162016-07-14014 July 2016 Summary of 6/30/16 Prelicensing Meeting with Energy Northwest to Discuss License Amendment Request to Revise Emergency Action Levels Based on Nuclear Energy Institute (NEI) 99-01, Revision 6 at Columbia Generating Station ML16138A3762016-05-25025 May 2016 Summary of 5/3/2016 Prelicensing Meeting with Energy Northwest to Discuss License Amendment Request Regarding Emergency Control Room Chiller System at Columbia Generating Station ML16138A3292016-05-24024 May 2016 Summary of 5/2/2016 Prelicensing Meeting with Energy Northwest to Discuss Measurement Uncertainty Recapture Power Uprate License Amendment Request at Columbia Generating Station ML16126A4822016-05-17017 May 2016 Summary of Prelicensing Meeting with Energy Northwest to Discuss License Amendment Request Concerning Portional Reclassification of Reactor Water Cleanup System at Columbia Generating Station ML16138A1682016-05-0202 May 2016 Licensee Presentation Regarding Mur Power Uprate for Columbia Generating Station, Pending LAR ML15187A4442015-07-0606 July 2015 Summary of a Regulatory Conference to Discuss the Safety Significance of a Columbia Finding Emergency Plan Implementing Procedures Did Not Implement Some Protective Action Recommendations Required by the Emergency Plan ML15173A2732015-06-30030 June 2015 Summary of June 4, 2015, Category 1 Public Meeting with Energy Northwest to Discussion Columbia Generating Station Seismic Hazard Reevaluation Associated with Implementation of Japan Lessons-Learned Near-Term Task Force Recommendation 2.1, ML15069A5162015-03-17017 March 2015 2/24/2014 Summary of Presubmittal Meeting with Energy Northwest to Discuss Relief Request for Radwaste Cleanup Piping for Columbia Generating Station ML14168A0452014-07-0808 July 2014 Summary of 6/10/14 Closed Meeting Between U.S. Army Corps of Engineers, U.S. Dept of Interior Bureau of Reclamation, and Energy Northwest to Discuss Flooding Analysis for Columbia Generating Station ML13339B1452013-12-0505 December 2013 Meeting Summary for Public Meeting with Energy Northwest Regarding Columbia Generating Station ML12306A3332012-11-16016 November 2012 Summary of 10/18/12 Pre-licensing Meeting to Discuss Future License Amendment Request to Address Impacts of Remediation Activities Undertaken by Department of Energy in the Owner-Controlled Area at Columbia Generating Station ML12293A0592012-10-18018 October 2012 Summary of Meeting with Energy Northwest Regarding Columbia Generating Station Performance Improvement Initiatives ML12157A2722012-06-11011 June 2012 5/31/2012 Summary of Telephone Conference with Licensees Regarding Near Term Task Force Recommendation 2.1 Seismic Reevaluations - Diablo Canyon, 1 and 2, San Onofre, Units 2 and 3, Columbia Generating Station, and Palo Verde, Units 1, 2, a ML1201201102012-01-12012 January 2012 Summary of Meeting with Energy Northwest Regarding Columbia Generating Station Performance Improvement Initiatives ML11350A0562011-12-21021 December 2011 12/15/11, Summary of Telephone Conference Call Held Between the U.S. Nuclear Regulatory Commission and Energy Northwest, Concerning the Metal Fatigue and Operating Experience Open Items in the Columbia License Renewal Safety Evaluation Repo ML11336A1502011-12-12012 December 2011 Summary of Telephone Conference Call Held on November 14, 2011, Between the U.S. Nuclear Regulatory Commission and Energy Northwest, Concerning the Metal Fatigue Open Item in the Columbia License Renewal Safety Evaluation Report with Open I ML11339A0872011-12-12012 December 2011 Summary of Telephone Conference Call Held on November 28, 2011, Between the U.S. Nuclear Regulatory Commission and Energy Northwest, Concerning the Upper Shelf Energy Open Item in the Columbia License Renewal Safety Evaluation Report with O ML11339A0852011-12-12012 December 2011 November 8, 2011, Summary of Telephone Conference Call Held Between the U.S. Nuclear Regulatory Commission and Energy Northwest, Concerning the Metal Fatigue Open Item in the Columbia License Renewal Safety Evaluation Report with Open Items ML11249A0132011-11-21021 November 2011 08/29/2011-Summary of Tele Conf Call Between the USNRC and Energy Northwest, Concerning the Response to the Request for Additional Information Pertaining to the Columbia Generating Station, License Renewal Application ML11311A2662011-11-10010 November 2011 Summary of Tele Conf Call Held on 11/2/11, Between the USNRC and Energy Northwest, Concerning the Core Plate Hold-Down Bolts Open Item in the Columbia License Renewal Safety Evaluation with Open Items ML11305A1762011-11-0303 November 2011 Summary of Tele Conf Call Held on 10/27/11, Between the USNRC and Energy Northwest, Concerning the Metal Fatigue Open Item in the Columbia License Renewal Safety Evaluation with Open Items ML11291A0792011-11-0101 November 2011 09/27/2011 Summary of Public Meetings Conducted to Discuss the Dseis Related to the Review of the Columbia Generating Station License Renewal Application (Tac No. ME3121) ML11273A0012011-10-0404 October 2011 Summary of Teleconf Call Held on Sept. 28, 2011, Between the USNRC and Energy Northwest, Concerning the Draft Request for Additional Information Pertaining to the Columbia Generating Station, License Renewal Application ML11273A0662011-10-0404 October 2011 Summary of the Telephone Conference Call Held on September 29, 2011, Concerning the Inspection Report Pertaining to the Columbia Generating Station, License Renewal Application ML11256A3002011-09-23023 September 2011 Summary of Telephone Conference Call Held on September 12, 2011, Concerning the Draft Request for Additional Information Pertaining to the Columbia Generating Station, License Renewal Application ML11238A1582011-09-14014 September 2011 8/25/11 - Summary of Telephone Conference Call Between NRC and Energy Northwest Concerning Drais Pertaining to the SAMA Review of the Columbia Generating Station License Renewal Application ML11250A0152011-09-0808 September 2011 Summary of Tele Conf Call Held on August 22, 2011, Btw the USNRC and Energy Northwest, Concerning Topics Pertaining to the Columbia Generating Station, License Renewal Application ML11223A3512011-08-23023 August 2011 Summary of Telephone Conference Call Held on August 11, 2011, Between the NRC and Energy Northwest, Concerning the Response to the Request for Additional Information Pertaining to the Columbia Generation Station, LRA ML11230B0892011-08-23023 August 2011 August 17, 2011, Summary of Conference Call Held, Between the U.S. Nuclear Regulatory Commission and Energy Northwest, Concerning the Response to the Request for Additional Information Pertaining to the Columbia Generating Station, LRA ML11216A2532011-08-11011 August 2011 August 3, 2011, Summary of Telephone Conference Call Held Between the NRC and Energy Northwest, Concerning the Response to the Request for Additional Information Pertaining to the Columbia Generating Station, LRA ML11217A0222011-08-11011 August 2011 8/3-4/11, Summary of Telephone Conference Call Held Between Nuclear Regulatory Commission and Energy Northwest, Concerning the Response to the Request for Additional Information Pertaining to the Columbia Generating Station, LRA ML11220A0102011-08-11011 August 2011 February 3, 2011, Summary of Telephone Conference Call Held Between NRC and Energy Northwest, Concerning the Responses to the RAI Pertaining to the Columbia Generating Station, LRA ML1119900742011-08-0404 August 2011 Summary of Pre-Licensing Meeting with Energy Northwest to Discuss Proposed Power Range Neutron Monitoring System/Arts/Mellla License Amendment Request for Columbia Generating Station ML11208B0492011-08-0202 August 2011 07/19/11 Summary of Telephone Conference Call Held Between the NRC and Energy Northwest, Concerning the Request for Additional Information Pertaining to the Columbia Generating Station, License Renewal Application (TAC No. Me3058) 2023-06-05
[Table view] |
Text
UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555-0001 March 1, 2011 LICENSEE:
Energy Northwest FACILITY:
Columbia Generating Station SUB"IECT:
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON JANUARY 19, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENERGY NORTHWEST CONCERNING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE SEVERE ACCIDENT MITIGATION ALTERNATIVES REVIEW OF THE COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATION The U.S. Nuclear Regulatory Commission and representatives of Energy Northwest (the applicant) held a telephone conference call on January 19, 2011, to discuss the applicanfs draft response to requests for additional information concerning the Severe Accident Mitigation Alternatives review of the Columbia Generating Station license renewal application.
Enclosure 1 provides a list of the participants and Enclosure 2 contains a list of the comments on the draft response including a brief description of the status of the items. The applicant had an opportunity to comment on this summary. Daniel I. Doyle, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-397
Enclosures:
- 1. List of Participants
- 2. List of Comments on Draft Response cc w/encls: Distribution via Listserv LIST OF COLUMBIA GENERATING LICENSE RENEWAL SEVERE ACCIDENT MITIGATION ALTERNATIVES PARTICIPANTS Daniel Doyle Ray Gallucci Arthur Cunanan Steve Short Garill Coles Bruce Schmitt Abbas A. Mostala Jim Tansy Albert T. Chiang Jerral E. "Dusty" Rhoads Lisa Williams Eric J. Jorgenson Stanley Levinson James Metcalf Darvin Kapitz Jennifer Butler Larry Lee TELEPHONE CONFERENCE CALL JANUARY 19, 2011 AFFILIATIONS U.S. Nuclear Regulatory Commission (NRC) NRC NRC Pacific Northwest National Laboratory (PNNL) PNNL PNNL Energy Northwest (EN) EN EN EN EN Maracor AREVA AREVA AREVA AREVA ERIN Engineering ENCLOSURE REQUESTS FOR ADDITIONAL COLUMBIA GENERATING LICENSE RENEWAL SEVERE ACCIDENT MITIGATION ALTERNATIVES JANUARY 19,
Background:
The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of the applicant, Energy Northwest (EN), held a telephone conference call on January 19, 2011! to discuss comments on the applicant's draft response to requests for additional information (RAls) concerning the Severe Accident Mitigation Alternatives (SAMA) review of the Columbia Generating Station (CGS) license renewal application (LRA). The NRC issued a previous RAI related to the SAMA review to EN by letter dated July 1, 2010 (ADAMS Accession Number ML101760421).
EN provided a partial response to the RAls by letter dated September 17, 2010 (ADAMS Accession Number ML102660151).
The NRC issued two sets of clarification RAls by letters dated November 10, 2010 (ADAMS Accession Number ML102870984) and December 2,2010 (ADAMS Accession Number ML103330246).
The purpose of this telephone conference was to address comments from the staff on EN's draft RAI response intended to close out the SAMA RAls. Comments:
Comment 1: Table A-10 shows CB-08 and CB-09 subsumed by CB-01 (inconsistent with response to RAI 6.b 09-17-2010).
While the environmental report (ER) and Table 6.j-1ii-1 provided estimated benefits of $0, for these SAMAs, same as CB-01, sensitivity analysis shows CB-01 benefit to be $20K. Since CB-08 and CB-09 have lower implementation cost than CB-01, they will be treated as evaluated (Case 09) and not subsumed, and both appear to be cost beneficial using the sensitivity analysis results for CB-01. Discussion:
The entries referencing SAMA candidates CB-08 and CB-09 will be clarified.
CB-08 and CB-09 will be evaluated for cost-benefit using probabilistic safety assessment (PSA) Rev. 7.1 to be consistent with what was done for PSA Rev. 6.2. (See Tables B-1 through B-8.) Comment 2: For SAMAs that increase risk (core damage frequency (CDF), dose, OECR), explain. e.g. AC/DC-30R (internal events), CC-25R (fire events), SR-05R (seismic events). ENCLOSURE 2
-2 Any increase in risk, not just an increase in the overall total, will be discussed. (See Tables through B-5, B-7, and Comment Editorial:
Table B-2 occasionally messed up (Le., page 125, Table will be corrected. (See Table Comment Minor: Table B-6 footnotes
-Can't determine reason for differences between Presumably each reflects different RAI The footnotes are correct as-is even though each is the same (with the exception of the SAMA candidates identified).
There is no reason for the different Comment 5: Explain how benefit estimates for 3% Sensitivity Case #1 are calculated.
NRC staff results are higher than reported in Table B-B. For example, for internal events, the following are calculated at 3%: APE -$23BK, AOC -$153K, AOE -$6.7K, cleanup/decontamination
-$211 K, and replacement power -$217K for total of internal events MACR of $B23K. Discussion:
EN requested a copy of the NRC's spreadsheet in which the 3% discount rate sensitivity case was performed so that EN could understand and explain any difference in the approach taken for this sensitivity case. (See footnote added to Table B-B.) Comment 6: SAMAs CC-01 (Case 10) and CC-02 (Case 11) report exact same benefits, but model approaches described in ER Table E.11-1 are different.
Confirm that the model approaches described for each were used in the SAMA evaluation and produce identical results. Discussion:
Clarification will be added that the same model approach was used for both SAMAs even though the description of each model approach is different. (See footnote added to Table B-1.)
-Comment 7: Editorial:
Table 6.j-1 ii-1 estimated benefit value for FR-07a is $1,034,480, not $1,304,480.
Table will be corrected. (See Table 6.j-1 Comment 8: Description of model approach for new SAMAs in Table 8-1 need to be modified/expanded to be put into layman terms (e.g., FL-05R). Discussion:
Additional information for some of the entries on Table 8-1 will be provided. (See Table 8-1, SAMA candidates SR-05R through C8-10R.) Comment 9: Confirm that basic modeling approach for SAMAs used in the sensitivity analysis (Table 8-1) remained the same as that described in the ER (Table E.11-1). For example, it is observed for FR-03 that while the basic modeling approach remained unchanged (probability of most risk significant hot shorts set to 0), the specific modeling change was revised slightly presumably because the risk significant hot shorts changed in model Rev. 7.1. Discussion:
Clarification will be added that the modeling approach for SAMA candidates in Table 8-1 remained the same as that described in the ER (Table E.11-1). (See footnote added to Table 8-1.) Comment 10: Editorial:
Table A-13 values for RRW and point estimate missing.
Table will be corrected. (See Table
-Comment 11: Page 3 states that "Table A-1 provides the changes in CDF for Rev. 7.1 relative to Rev. 6.2 for all initiating events, along with a characterization of the changes in terms of plant changes and the Internal Events and Flooding upgrade to RG 1.200 Rev. 2." Sequences identified in Table A-1 appear to be internal events sequences.
Differences shown between Rev 7.1 and Rev 6.1 CDFs appear to be related to specific improvements made to the model and related to trying to comply with RG 1.200. Describe the source of the model changes (e.g., facts and observations (F&Os) from internal or external peer review comments). Confirm what parts of the PSA model the changes apply to (Le., whether the changes were only to the Level 1 Internal Events model). Explain why the Fire Events CDF appears to have increased significantly as a result of changes to the internal events model. Provide a table similar to A-1 and A-2 that addresses fire and seismic initiators.
Discussion: a & b. High level discussion on the source of the model changes will be added. Changes were made only to Levels 1 and 2 PSAs for internal events, plus the internal events Level 2 CETs were integrated with the fire and seismic models. (See Section 2.0.) c. & d. Tables for Fire and Seismic CDF will be added. When addressing the "LOCA signal" and MSIV HVAC, the fire CDF ended up being doubled. (See Tables A-1 (Fire) and A-1 (Seismic).)
Comment 12: Table 3.d(i)-1 presents the change in RRW value for four selected SAMAs as a way to demonstrate that conduit modeling incompleteness has marginal effect on the SAMA evaluation.
Provide the rationale for the SAMAs selected.
Provide justification for why these SAMAs are representative or bounding related to the other SAMAs including the "installation of early detection in fire area" SAMAs. Discussion:
Additional SAMA candidates (FR-OSR and FR-12R) will be added to the table. Also, the following typographical error was noted -the RRW for FR-11 R should have been 1.067. (See Table 3.d(i)-1.)
Comment 13: In Table A-S, a number of operator error events with RRW values higher than 1.01 are presented (e.g., ATWH-HPLPRSTH3XX, RHRH-ATWSDC-H3XX, TSWHUMNIC525H3LL, TSWHUMNIC502H3L, HPS-CTL-COND----, ADSHUMNSTARTH3L T, RHRHUMNSYS62H3LL, SW-HUMN-W521 H3LL, XDPHUMN-W521 H3LL). Procedure improvements for these events are not discussed as a potential mitigation strategy.
In light of this, and the response to RAI 5.3,
-explain how procedure improvements were considered in the SAMA evaluation, especially for the identified events. Discussion:
For these operator error events, clarification will be added to indicate that "improved training" includes procedural enhancements. (See revised discussion concerning SAMA candidate OT-07R.) Comment 14: Table A-11 presents a Level 1 basic fire events importance list which appears to be significantly different from the list presented in Table 5.d-1 of the response to RAls transmitted September 17,2010. For example events labeled "GTFF", "GTFF50", and "GTFF10" appear at the top of the list in Table A-11 but did not appear at all in the earlier list (i.e., Table 5.d-1). Explain the difference in the modeling that produced this different listing. Discussion:
The sorting criterion used to create Table 5.d-1 was different than that for Table A-11. Sorting for Rev. 6.2 used RAW first, followed by an RRW sort. Rev. 7.1 sorted directly on RRW. If Table 5.d-1 was sorted purely by RRW, then the events GTFF, GTFF50 and GTFF10 would have appeared in the table. (See footnote added to Table A-11.) Comment 15: Response to RAI 3.i-1 -What is the value used for internal events CCF of the MSIVs to isolate? Does this value bound the probability of a fire-induced ISLOCA (e.g., spurious opening of two series MOVs due to hot shorting -0.31\2 =0.09)? Discussion:
Discussion will be added to address this question. (See response for RAI 3.i-1.) Comment 16: Tables A-3, A-4, and A-5 -While the LERF (HIE release category) frequency decreased by a factor of 2 for internal and seismic events, it decreased by a factor of 6 for fire events. Explain. Discussion:
A footnote will be added to clarify that fire LERF is dominated by normal loss of injection, not ATWS. (See Table A-4.)
-6 Comment 17: Tables A-15 and A-16 -The implementation cost estimates for the following Phase I SAMAs were substantially increased based on a CGS-specific cost estimate:
AT-10, CC-12, CP-12, CP-22, and CP-24. Provide justification for the cost estimate developed for these SAMAs (e.g., breakdown of the costs to the level of detail estimated).
A breakdown of costs for the identified SAMA candidates will be provided. (See Section Comment Table A-16 -SAMA IA-03 was screened based on the risk reduction from removing the dependency.
Does this analysis bound the risk reduction from adding additional air compressors?
A case will be evaluated for adding a new compressor. (It was determined that existing candidate IA-02 evaluates adding air compressors.
See Table Comment Section 2.4 -Provide explanation of the weighting performed on "dominant cutsets associated MMP cases" to determine the representative MMP cases. It is unclear how addresses low frequency, high consequence For the two extremes (High Early vs. Low Late), release estimates were based on the scenarios and their corresponding MMP results, with the release estimates weighted by the scenario frequencies.
Discussion/example will be provided. (See Section 2.4.) Additional Comment In Table 4-2, the entry for CW-07 includes fire LERF. However, Note 2 does not indicate this was included.
Please make this The table entry is correct (fire LERF was included), and the Note will be
-7 Additional Comment 2: Several Phase I SAMAs were dispositioned in Table A-16 by dividing the total estimated benefit by the number of trains/components to argue that the benefit is less than $100K and therefore the SAMA is screened on Criterion E, Very Low Benefit. This is not an acceptable approach to screening, the entire risk benefit must be considered in the evaluation.
Discussion:
The Phase I screening for these SAMAs will be re-evaluated based on the total risk reduction benefit.
March 1, 2011 Energy Northwest Columbia Generating Station
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON JANUARY 19, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENERGY NORTHWEST CONCERNING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE SEVERE ACCIDENT MITIGATION ALTERNATIVES REVIEW OF THE COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATION The U.S. Nuclear Regulatory Commission and representatives of Energy Northwest (the applicant) held a telephone conference call on January 19, 2011, to discuss the applicanfs draft response to requests for additional information concerning the Severe Accident Mitigation Alternatives review of the Columbia Generating Station license renewal application.
Enclosure 1 provides a list of the participants and Enclosure 2 contains a list of the comments on the draft response including a brief description of the status of the items. The applicant had an opportunity to comment on this summary. IRA! Daniel I. Doyle, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-397
Enclosures:
- 1. List of Participants
- 2. List of Comments on Draft Response cc w/encls: Distribution via Listserv DISTRIBUTION:
See next page ADAMS Accession No'-. ML110400510 OFFICE LA:DLR PM:RPB1 :DLR I BC:RPB1:DLR PM:RPB1 :DLR NAME YEdmonds DDoyle BPham DDoyle I DATE 02/15/11 02/18111 03/01/11 03/01/11 OFFICIAL RECORD COPY Memorandum to Energy Northwest from D. Doyle dated March 1 2011
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON JANUARY 19, 2011, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENERGY NORTHWEST CONCERNING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE SEVERE ACCIDENT MITIGATION ALTERNATIVES REVIEW OF THE COLUMBIA GENERATING STATION LICENSE RENEWAL APPLICATION DISTRIBUTION:
HARD COPY: DLR RF E-MAIL: PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRarb Resource RidsNrrDlrRapb Resource RidsNrrDlrRasb Resource RidsNrrDlrRerb Resource RidsNrrDlrRpob Resource ACunanan DDoyle BSingal WWalker, RIV RCohen, RIV LSubin,OGC