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| | issue date = 09/01/2016 | | | issue date = 09/01/2016 |
| | title = Summary of 7/28/16, Public Meeting with STP Nuclear Operating Company to Discuss the License Amendment and Exemption Requests to Use a Risk-Informed Approach to the Resolution of GSI-191 (CAC Nos. MF2400 - MF2409) | | | title = Summary of 7/28/16, Public Meeting with STP Nuclear Operating Company to Discuss the License Amendment and Exemption Requests to Use a Risk-Informed Approach to the Resolution of GSI-191 (CAC Nos. MF2400 - MF2409) |
| | author name = Regner L M | | | author name = Regner L |
| | author affiliation = NRC/NRR/DORL/LPLIV-1 | | | author affiliation = NRC/NRR/DORL/LPLIV-1 |
| | addressee name = | | | addressee name = |
| Line 9: |
Line 9: |
| | docket = 05000498, 05000499 | | | docket = 05000498, 05000499 |
| | license number = NPF-076, NPF-080 | | | license number = NPF-076, NPF-080 |
| | contact person = Regner L M | | | contact person = Regner L |
| | case reference number = CAC MF2400, CAC MF2401, CAC MF2402, CAC MF2403, CAC MF2404, CAC MF2405, CAC MF2406, CAC MF2407, CAC MF2408, CAC MF2409, GSI-191 | | | case reference number = CAC MF2400, CAC MF2401, CAC MF2402, CAC MF2403, CAC MF2404, CAC MF2405, CAC MF2406, CAC MF2407, CAC MF2408, CAC MF2409, GSI-191 |
| | document type = Meeting Summary | | | document type = Meeting Summary |
| | page count = 5 | | | page count = 5 |
| | project = CAC:MF2400, CAC:MF2401, CAC:MF2402, CAC:MF2403, CAC:MF2404, CAC:MF2405, CAC:MF2406, CAC:MF2407, CAC:MF2408, CAC:MF2409 | | | project = CAC:MF2400, CAC:MF2401, CAC:MF2402, CAC:MF2403, CAC:MF2404, CAC:MF2405, CAC:MF2406, CAC:MF2407, CAC:MF2408, CAC:MF2409 |
| | stage = | | | stage = Meeting |
| }} | | }} |
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| |
|
| =Text= | | =Text= |
| {{#Wiki_filter:LICENSEE: FACILITY: SUBJECT: UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 September 1, 2016 STP Nuclear Operating Company South Texas Project, Units 1 and 2 SUMMARY OF JULY 28, 2016, PUBLIC MEETING WITH STP NUCLEAR OPERA TING COMPANY TO DISCUSS THE LICENSE AMENDMENT AND EXEMPTION REQUESTS TO USE A RISK-INFORMED APPROACH TO THE RESOLUTION OF GENERIC SAFETY ISSUE 191, "ASSESSMENT OF DEBRIS ACCUMULATION ON PWR SUMP PERFORMANCE" (CAC NOS. MF2400, MF2401, MF2402, MF2403, MF2404, MF2405, MF2406, MF2407, MF2408, AND MF2409) | | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 September 1, 2016 LICENSEE: STP Nuclear Operating Company FACILITY: South Texas Project, Units 1 and 2 |
| * On July 28, 2016, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of STP Nuclear Operating Company (STPNOC, the licensee), at NRC Headquarters, Rockville, Maryland. The meeting notice and agenda, dated July 6, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML 1621 OA086. A list of meeting attendees is provided in the Enclosure to this meeting summary. By letter dated June 19, 2013 (ADAMS Package Accession No. ML 131750250), as supplemented by letters dated October 3, October 31, November 13, November 21 and December 23, 2013 (two letters); January 9, February 13, February 27, March 17, March 18, May 15 (two letters), May 22, June 25, and July 15, 2014; March 10, March 25, and August 20, 2015; and April 13, May 11, June 9, June 16, July, 18, July 21 (two letters), July 28, 2016 (ADAMS Accession Nos. ML 13295A222, ML 13323A673, ML 13323A 128, ML 13338A 165, ML14015A312, ML14015A311, ML14029A533, ML14052A110, ML14072A075, ML14086A383, ML 14087A126, ML 14149A353, ML 14149A354, ML 14149A439, ML 14178A467, ML 14202A045, ML15072A092, ML15091A440, ML15246A125, ML16111B204, ML16154A117, ML16176A148, ML 16196A241, ML 16209A226, ML 16229A189, ML 16230A232, and ML 16221A393, respectively), STPNOC submitted exemption requests accompanied by a license amendment request for a risk-informed approach to resolve Generic Safety Issue (GSl)-191, "Assessment of Debris Accumulation on PWR [Pressurized-Water Reactor] Sump Performance," at South Texas Project, Units 1 and 2 (STP). The purpose of this public meeting was to discuss the NRC staff's remaining unresolved concerns associated with the licensee's August 20, 2015, document, which provided information on STPNOC's revised methodology to resolve GSl-191 using a risk combined with a deterministic -'Risk over Deterministic' or 'RoverD' -methodology. The meeting focused on providing followup information needed, following the request for additional information (RAI) responses provided in the May 11, June 16, July 18, July 21 (two letters), and July 18, 2016, letters. The STPNOC staff provided a handout titled "STPNOC Public Meeting with NRC to Discuss STPNOC Risk-Informed GSl-191 Licensing Application" and can be found in ADAMS at Accession No. ML 16210A044. | | |
| -2 -The STPNOC handout provided an overview of changes to the application that would be submitted as a supplement at the end of September 2016. The NRC staff then provided additional feedback on the RAI responses for the thermal-hydraulic analyses since the June 22, 2016, public meeting.1 The NRC stated that over half of the questions were found acceptable. Several questions, however, lacked enough details for the NRC staff to make a safety determination, specifically in the areas of cladding oxide deposition on fuel assemblies, accident scenario progression, debris at fuel grid spacers, initial and boundary conditions for long-term core cooling, validation of closure relationships and the evaluation model, several requested sensitivity studies, and uncertainty and design margin. The details of these questions will be provided to STPNOC staff as followup RAI questions. STPNOC staff stated that they intended to provide responses to the remaining NRC staff questions in the September submittal. Other issues to be resolved by STPNOC in the September submittal include, a Rovero update including a new critical weld list and updates to small cold-leg breaks greater than 16-inch hot-leg breaks, and double-ended guillotine breaks; technical specification and updated final safety analysis updates; and followup RAI responses. STPNOC stated it would also provide the basis for STPNOC's treatment of epoxy coatings in containment, the boric acid precipitation Westinghouse analysis, and a discussion on the changes to the risk analysis. Additionally, risk clarifications needed will be discussed in a public meeting scheduled for August 29, 2016. The NRC staff will issue additional RAI questions if docketed responses are needed. There were no public comments or questions and no meeting feedback received. If you have any questions, please contact me at 301-415-1906 or via e-mail at Lisa. Regner@nrc.gov. Docket Nos. 50-498 and 50-499 Enclosure: List of Attendees cc w/encl: Distribution via Listserv Sincerely, Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation 1 The June 22, 2016, public meeting summary can be found in ADAMS at Accession No. ML 16190A008.
| | ==SUBJECT:== |
| LIST OF ATTENDEES JULY 28. 2016. PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY REGARDING RISK-INFORMED APPROACH TO RESOLUTION OF GSl-191 NAME Lisa Regner Vic Cusumano Josh Kaizer Reed Anzalone Ashley Smith Steven Laur Andrea Russell Osvaldo Pensado Mike Murray Ernie Kee Wayne Harrison Steve Blossom Wes Schulz Drew Richards Rodolfo Vaghetto Dominic Munoz Brian Krystek Craig Sellers Tim Sande Kip Walker Mo Dingler SOUTH TEXAS PROJECT. UNITS 1 AND 2 DOCKET NOS. 50-498 AND 50-499 ORGANIZATION U.S. Nuclear Regulatory Commission (NRC) NRC NRC NRC NRC NRC NRC Southwest Research Institute (contractor for NRC) STP Nuclear Operating Company (STPNOC) STPNOC STPNOC STPNOC STPNOC STPNOC Texas A&M University Alien Science & Technology Engineering Planning Management, Inc. Calvert Cliffs Nuclear Power Plan Enercon Enercon Wolf Creek Nuclear Operating Company Enclosure | | |
| -2 -The STPNOG handout provided an overview of changes to the application that would be submitted as a supplement at the end of September 2016. The NRG staff then provided additional feedback on the RAI responses for the thermal-hydraulic analyses since the June 22, 2016, public meeting.1 The NRG stated that over half of the questions were found acceptable. Several questions, however, lacked enough details for the NRG staff to make a safety determination, specifically in the areas of cladding oxide deposition on fuel assemblies, accident scenario progression, debris at fuel grid spacers, initial and boundary conditions for long-term core cooling, validation of closure relationships and the evaluation model, several requested sensitivity studies, and uncertainty and design margin. The details of these questions will be provided to STPNOG staff as followup RAI questions. STPNOG staff stated that they intended to provide responses to the remaining NRG staff questions in the September submittal. Other issues to be resolved by STPNOG in the September submittal include, a Rovero update including a new critical weld list and updates to hot-leg breaks greater than 16-inches, and double-ended guillotine breaks; technical specification and updated final safety analysis updates; and followup RAI responses. STPNOG stated it would also provide the basis for STPNOG's treatment of epoxy coatings in containment, the boric acid precipitation Westinghouse analysis, and a discussion on the changes to the risk analysis. Additionally, risk clarifications needed will be discussed in a public meeting scheduled for August 29, 2016. The NRG staff will issue additional RAI questions if docketed responses are needed. There were no public comments or questions and no meeting feedback received. If you have any questions, please contact me at 301-415-1906 or via e-mail at Lisa. Regner@nrc.gov. Docket Nos. 50-498 and 50-499 Enclosure: List of Attendees cc w/encl: Distribution via Listserv DISTRIBUTION: See next page ADAMS Accession No. ML 16238A527 Sincerely, /RA/ Balwant Singal for Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation per email OFFICE NRR/DORL/LPL4-1 /PM NRR/DORL/LPL4-1 /LA NRR/DSS/SSIB/BC* NRR/DSS/SNPB/BC* NAME LRegner JBurkhardt VCusumano JDean (PBlechman for) (ARussell for) DATE 08/25/16 08/25/16 08/29/16 09/01116 OFFICE NRR/DE/ESGB/BC (A)* NRR/DORL/LPL4-1/BC NRR/DORL/LPL4-1/PM NAME JPeralta RPascarelli LRegner DATE 08/29/16 09/01/16 09/01/16 OFFICIAL RECORD COPY 1 The June 22, 2016, public meeting summary can be found in ADAMS at Accession No. ML 16190A008. | | ==SUMMARY== |
| Letter to STP Nuclear Operating Company from Lisa M. Regner dated September 1, 2016. SUBJECT: SUMMARY OF JULY 28, 2016, PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY TO DISCUSS THE LICENSE AMENDMENT AND EXEMPTION REQUESTS TO USE A RISK-INFORMED APPROACH TO THE RESOLUTION OF GENERIC SAFETY ISSUE 191, "ASSESSMENT OF DEBRIS ACCUMULATION ON PWR SUMP PERFORMANCE" (CAC NOS. MF2400, MF2401, MF2402, MF2403, MF2404, MF2405, MF2406, MF2407, MF2408, AND MF2409) DISTRIBUTION: PUBLIC LPL4-1 r/f RidsACRS_MailCTR Resource RidsNrrDeEpnb Resource RidsNrrDeEsgb Resource RidsNrrDorlLpl4-1 Resource RidsNrrDraApla Resource RidsNrrDssSnpb Resource RidsNrrDssSrxb Resource RidsNrrDssSsib Resource RidsNrrDssStsb Resource RidsNrrLAJBurkhardt Resource RidsNrrPMSouthTexas Resource RidsRgn4MailCenter Resource JBowen, EDO RIV TWertz, NRR ARussell, NRR/DSS/SSIB SSmith, NRR/DSS/SSIB PKlein, NRR/DE/ESGB MYoder, NRR/DE/ESGB VCusumano, NRR/DSS/SSIB ASmith, NRR/DSS/SSIB RAnzalone, NRR/DSS/SNPB JKaizer, NRR/DSS/SNPB SLaur, NRR, DRA,APLA
| | OF JULY 28, 2016, PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY TO DISCUSS THE LICENSE AMENDMENT AND EXEMPTION REQUESTS TO USE A RISK-INFORMED APPROACH TO THE RESOLUTION OF GENERIC SAFETY ISSUE 191, "ASSESSMENT OF DEBRIS ACCUMULATION ON PWR SUMP PERFORMANCE" (CAC NOS. MF2400, MF2401, MF2402, MF2403, MF2404, MF2405, MF2406, MF2407, MF2408, AND MF2409) |
| }} | | * On July 28, 2016, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of STP Nuclear Operating Company (STPNOC, the licensee), at NRC Headquarters, Rockville, Maryland. The meeting notice and agenda, dated July 6, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML 1621 OA086. A list of meeting attendees is provided in the Enclosure to this meeting summary. |
| | By letter dated June 19, 2013 (ADAMS Package Accession No. ML131750250), as supplemented by letters dated October 3, October 31, November 13, November 21 and December 23, 2013 (two letters); January 9, February 13, February 27, March 17, March 18, May 15 (two letters), May 22, June 25, and July 15, 2014; March 10, March 25, and August 20, 2015; and April 13, May 11, June 9, June 16, July, 18, July 21 (two letters), July 28, 2016 (ADAMS Accession Nos. ML13295A222, ML13323A673, ML13323A128, ML13338A165, ML14015A312, ML14015A311, ML14029A533, ML14052A110, ML14072A075, ML14086A383, ML14087A126, ML14149A353, ML14149A354, ML14149A439, ML14178A467, ML14202A045, ML15072A092, ML15091A440, ML15246A125, ML16111B204, ML16154A117, ML16176A148, ML16196A241, ML16209A226, ML16229A189, ML16230A232, and ML16221A393, respectively), STPNOC submitted exemption requests accompanied by a license amendment request for a risk-informed approach to resolve Generic Safety Issue (GSl)-191, "Assessment of Debris Accumulation on PWR [Pressurized-Water Reactor] Sump Performance," at South Texas Project, Units 1 and 2 (STP). |
| | The purpose of this public meeting was to discuss the NRC staff's remaining unresolved concerns associated with the licensee's August 20, 2015, document, which provided information on STPNOC's revised methodology to resolve GSl-191 using a risk combined with a deterministic - 'Risk over Deterministic' or 'RoverD' - methodology. The meeting focused on providing followup information needed, following the request for additional information (RAI) responses provided in the May 11, June 16, July 18, July 21 (two letters), and July 18, 2016, letters. |
| | The STPNOC staff provided a handout titled "STPNOC Public Meeting with NRC to Discuss STPNOC Risk-Informed GSl-191 Licensing Application" and can be found in ADAMS at Accession No. ML16210A044. |
| | |
| | The STPNOC handout provided an overview of changes to the application that would be submitted as a supplement at the end of September 2016. The NRC staff then provided additional feedback on the RAI responses for the thermal-hydraulic analyses since the June 22, 2016, public meeting. 1 The NRC stated that over half of the questions were found acceptable. Several questions, however, lacked enough details for the NRC staff to make a safety determination, specifically in the areas of cladding oxide deposition on fuel assemblies, accident scenario progression, debris at fuel grid spacers, initial and boundary conditions for long-term core cooling, validation of closure relationships and the evaluation model, several requested sensitivity studies, and uncertainty and design margin. |
| | The details of these questions will be provided to STPNOC staff as followup RAI questions. |
| | STPNOC staff stated that they intended to provide responses to the remaining NRC staff questions in the September submittal. Other issues to be resolved by STPNOC in the September submittal include, a Rovero update including a new critical weld list and updates to small cold-leg breaks greater than 16-inch hot-leg breaks, and double-ended guillotine breaks; technical specification and updated final safety analysis updates; and followup RAI responses. |
| | STPNOC stated it would also provide the basis for STPNOC's treatment of epoxy coatings in containment, the boric acid precipitation Westinghouse analysis, and a discussion on the changes to the risk analysis. |
| | Additionally, risk clarifications needed will be discussed in a public meeting scheduled for August 29, 2016. |
| | The NRC staff will issue additional RAI questions if docketed responses are needed. |
| | There were no public comments or questions and no meeting feedback received. |
| | If you have any questions, please contact me at 301-415-1906 or via e-mail at Lisa. Regner@nrc.gov. |
| | Sincerely, |
| | ~~~~s-><- ~ |
| | Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499 |
| | |
| | ==Enclosure:== |
| | |
| | List of Attendees cc w/encl: Distribution via Listserv 1 The June 22, 2016, public meeting summary can be found in ADAMS at Accession No. ML16190A008. |
| | |
| | LIST OF ATTENDEES JULY 28. 2016. PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY REGARDING RISK-INFORMED APPROACH TO RESOLUTION OF GSl-191 SOUTH TEXAS PROJECT. UNITS 1 AND 2 DOCKET NOS. 50-498 AND 50-499 NAME ORGANIZATION Lisa Regner U.S. Nuclear Regulatory Commission (NRC) |
| | Vic Cusumano NRC Josh Kaizer NRC Reed Anzalone NRC Ashley Smith NRC Steven Laur NRC Andrea Russell NRC Osvaldo Pensado Southwest Research Institute (contractor for NRC) |
| | Mike Murray STP Nuclear Operating Company (STPNOC) |
| | Ernie Kee STPNOC Wayne Harrison STPNOC Steve Blossom STPNOC Wes Schulz STPNOC Drew Richards STPNOC Rodolfo Vaghetto Texas A&M University Dominic Munoz Alien Science & Technology Brian Krystek Engineering Planning Management, Inc. |
| | Craig Sellers Calvert Cliffs Nuclear Power Plan Tim Sande Enercon Kip Walker Enercon Mo Dingler Wolf Creek Nuclear Operating Company Enclosure |
| | |
| | ML16238A527 per email OFFICE NRR/DORL/LPL4-1 /PM NRR/DORL/LPL4-1 /LA NRR/DSS/SSIB/BC* NRR/DSS/SNPB/BC* |
| | JBurkhardt VCusumano NAME LRegner JDean (PBlechman for) (ARussell for) |
| | DATE 08/25/16 08/25/16 08/29/16 09/01116 OFFICE NRR/DE/ESGB/BC (A)* NRR/DORL/LPL4-1/BC NRR/DORL/LPL4-1/PM NAME JPeralta RPascarelli LRegner DATE 08/29/16 09/01/16 09/01/16 Letter to STP Nuclear Operating Company from Lisa M. Regner dated September 1, 2016. |
| | |
| | ==SUBJECT:== |
| | |
| | ==SUMMARY== |
| | OF JULY 28, 2016, PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY TO DISCUSS THE LICENSE AMENDMENT AND EXEMPTION REQUESTS TO USE A RISK-INFORMED APPROACH TO THE RESOLUTION OF GENERIC SAFETY ISSUE 191, "ASSESSMENT OF DEBRIS ACCUMULATION ON PWR SUMP PERFORMANCE" (CAC NOS. MF2400, MF2401, MF2402, MF2403, MF2404, MF2405, MF2406, MF2407, MF2408, AND MF2409) |
| | DISTRIBUTION: |
| | PUBLIC LPL4-1 r/f RidsACRS_MailCTR Resource RidsNrrDeEpnb Resource RidsNrrDeEsgb Resource RidsNrrDorlLpl4-1 Resource RidsNrrDraApla Resource RidsNrrDssSnpb Resource RidsNrrDssSrxb Resource RidsNrrDssSsib Resource RidsNrrDssStsb Resource RidsNrrLAJBurkhardt Resource RidsNrrPMSouthTexas Resource RidsRgn4MailCenter Resource JBowen, EDO RIV TWertz, NRR ARussell, NRR/DSS/SSIB SSmith, NRR/DSS/SSIB PKlein, NRR/DE/ESGB MYoder, NRR/DE/ESGB VCusumano, NRR/DSS/SSIB ASmith, NRR/DSS/SSIB RAnzalone, NRR/DSS/SNPB JKaizer, NRR/DSS/SNPB SLaur, NRR, DRA,APLA}} |
Letter Sequence Meeting |
|---|
CAC:MF2400, Control Room Habitability (Approved, Closed) CAC:MF2401, Control Room Habitability (Approved, Closed) CAC:MF2402, Control Room Habitability (Approved, Closed) CAC:MF2403, Control Room Habitability (Approved, Closed) CAC:MF2404, Control Room Habitability (Approved, Closed) CAC:MF2405, Control Room Habitability (Approved, Closed) CAC:MF2406, Control Room Habitability (Approved, Closed) CAC:MF2407, Control Room Habitability (Approved, Closed) CAC:MF2408, Control Room Habitability (Approved, Closed) CAC:MF2409, Control Room Habitability (Approved, Closed) |
Administration
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
|
MONTHYEARML15274A5992015-10-0101 October 2015
10-01-15 Public Phone Call
Project stage: Request
ML16011A0612016-02-0202 February 2016
Summary of 10/1/15 Meeting with STP Nuclear Operating Company to Discuss Revised Pilot Submittal and Request for Exemptions for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-191 at South Texas Project, Units 1 and 2 (CAC MF
Project stage: Meeting
ML16028A1522016-02-18018 February 2016
1/14/2016 Summary of Public Meeting with STP Nuclear Operating Company Regarding Modifications to the Licensee'S Risk-Informed Generic Safety Issue (GSI) 191 Application and Supplements for South Texas Project, Units 1 and 2
Project stage: Meeting
ML16088A2432016-04-0101 April 2016
2/18/2016, Summary of Public Meeting with STP Nuclear Operating Company Regarding Open Items, Risk-Informed Generic Safety Issue (GSI) 191 Application and Supplements for South Texas Project, Units 1 and 2 (CAC Nos. MF2400-MF2409)
Project stage: Meeting
ML16092A0442016-04-11011 April 2016
Summary of 3/3/2016 Public Meeting with STP Nuclear Operating Company Regarding Open Items, Risk-Informed Generic Safety Issue (GSI) 191 Application and Supplements for South Texas Project, Units 1 and 2 (CAC Nos. MF2400-MF2409)
Project stage: Meeting
ML16082A5072016-04-11011 April 2016
Request for Additional Information, Phased Response Requested, Exemption and License Amendment Request for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-191 (CAC Nos. MF2400-MF2409)
Project stage: RAI
ML16095A0102016-04-13013 April 2016
Summary of November 17-19, 2015 Thermal-Hydraulic Review at Texas A&M University; Pilot Submittal and Request for Exemptions for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-191 (CAC MF2400-MF2409)
Project stage: Other
ML16092A0852016-04-13013 April 2016
3/17/2016 Summary of Public Meeting with STP Nuclear Operating Company Regarding Open Items, Risk-Informed Generic Safety Issue (GSI) 191 Application and Supplements for South Texas Project, Units 1 and 2 (CAC Nos. MF2401-MF2409)
Project stage: Meeting
ML16096A0652016-04-13013 April 2016
Summary of February 4 and 16, 2016, Regulatory Audit at Westinghouse in Rockville, MD, Boric Acid Precipitation, Exemption and License Amendment Request, Risk-Informed Approach to Resolve Generic Safety Issue 191
Project stage: Other
ML16111A0272016-04-18018 April 2016
STP Nuclear Operating Company Slideshow for Public Meeting on April 21, 2016 for GSI-191 Resolution (CAC No. MF2400-01)
Project stage: Meeting
ML16103A3442016-04-26026 April 2016
Summary of February 24-26, 2016 Audit, Debris Transport Review at Alion Science and Technology Corporation, Albuquerque, Nm; Pilot Submittal and Exemption Request, Risk-Informed Approach to Resolve GSI 191
Project stage: Other
ML16032A4032016-04-26026 April 2016
FRN, Draft Environmental Assessment and Finding of No Significant Impact, Revise Licensing Basis as Documented in the UFSAR and Request for Exemptions, Risk-Informed Approach to Address GSI-191 (CAC MF2400-MF2409)
Project stage: Draft Other
ML16032A3872016-04-26026 April 2016
Draft Environmental Assessment and Finding of No Significant Impact, Revise Licensing Basis as Documented in the UFSAR and Request for Exemptions, Risk-Informed Approach to Address GSI-191 (CAC MF2400-MF2409)
Project stage: Draft Other
ML16127A4002016-05-11011 May 2016
Audit Summary, Thermal-Hydraulic Review on February 23-25, 2016 at Texas A&M University; Pilot Submittal and Request for Exemptions for a Risk-Informed Approach to Resolve Generic Safety Issue 191 (CAC MF2400-MF2409)
Project stage: Other
ML16125A2902016-05-26026 May 2016
Request for Additional Information, Risk Review, Exemption and License Amendment Request for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-191 (CAC Nos. MF2400-MF2409)
Project stage: RAI
ML16141B0812016-05-31031 May 2016
Audit Summary, Risk Audit on April 12-13, 2016, at Alumni Center at the University of Texas, Austin, Tx; Pilot Generic Safety Issue 191 Submittal and Exemption Request, and Draft Request for Additional Information
Project stage: Draft RAI
ML16175A1082016-06-24024 June 2016
Summary of 4/21/2016 Public Meeting with STP Nuclear Operating Company Regarding Open Items, Risk-Informed Generic Safety Issue (GSI) 191 Application and Supplements for South Texas Project, Units 1 and 2
Project stage: Meeting
ML16190A0082016-07-13013 July 2016
Summary of 6/22/2016 Public Meeting with STP Nuclear Operating Company Regarding Open Items, Risk-Informed Generic Safety Issue (GSI) 191 Application and Supplements for South Texas Project, Units 1 and 2 (CAC Nos. MF2400-MF2409)
Project stage: Meeting
ML16194A2342016-07-21021 July 2016
Request for Withholding Information from Public Disclosure - 5/6/16 Affidavit Executed by D. Munoz and M. Rozboril, Alion Science and Technology, Response to Follow-up RAIs 18, 38, and 44
Project stage: RAI
ML16242A0102016-08-23023 August 2016
NRR E-mail Capture - (External_Sender) FW: South Texas Project GSI-191 Draft Risk Responses to Questions for Public Meeting on August 29, 2016
Project stage: Request
ML16242A0092016-08-25025 August 2016
NRR E-mail Capture - (External_Sender) South Texas Project GSI-191 Draft thermal-hydraulic Responses to Questions for Public Meeting on August 29, 2016
Project stage: Request
ML16238A5272016-09-0101 September 2016
Summary of 7/28/16, Public Meeting with STP Nuclear Operating Company to Discuss the License Amendment and Exemption Requests to Use a Risk-Informed Approach to the Resolution of GSI-191 (CAC Nos. MF2400 - MF2409)
Project stage: Meeting
ML16258A3672016-09-0606 September 2016
NRR E-mail Capture - (External_Sender) South Texas Project Generic Safety Issue 191 Resolution SNPB-3-2, Bullet 4 16 -inch Bounding Break Clarification for September 14, 2016 Public Meeting
Project stage: Request
ML16258A1002016-09-12012 September 2016
NRR E-mail Capture - (External_Sender) South Texas Project Generic Safety Issue 191 Resolution RAI APLA-3-2 Clarification for September 14, 2016 Public Meeting
Project stage: Request
ML16258A1042016-09-12012 September 2016
NRR E-mail Capture - (External_Sender) South Texas Project Generic Safety Issue 191 Resolution RAI SNPB-3-13 Clarification for September 14, 2016 Public Meeting
Project stage: Request
ML16258A0962016-09-13013 September 2016
NRR E-mail Capture - (External_Sender) South Texas Project Generic Safety Issue 191 Resolution RAI SSIB-3-4 Clarification for September 14, 2016 Public Meeting
Project stage: Request
ML16258A0982016-09-13013 September 2016
NRR E-mail Capture - (External_Sender) South Texas Project Generic Safety Issue 191 Resolution RAI 33 Clarification for September 14, 2016 Public Meeting
Project stage: Request
ML16258A2072016-09-14014 September 2016
NRR E-mail Capture - (External_Sender) South Texas Project Generic Safety Issue 191 Resolution RAI 37 Clarification for September 14, 2016 Public Meeting
Project stage: Request
ML16258A2082016-09-14014 September 2016
NRR E-mail Capture - (External_Sender) South Texas Project Generic Safety Issue 191 Resolution RAI 34 Clarification for September 14, 2016 Public Meeting
Project stage: Request
ML16246A0222016-10-0505 October 2016
Summary of Public Meeting with STP Nuclear Operating Company Regarding Open Items Related to Risk-Informed Generic Safety Issue (GSI) 191 Application and Supplements for South Texas Project, Units 1 and 2 (CAC Nos. MF2400 - MF2409)
Project stage: Meeting
ML16279A3312016-10-27027 October 2016
Summary of Public Meeting with STP Nuclear Operating Company Regarding Open Items, Risk-Informed Generic Safety Issue (GSI) 191 Application and Supplements for South Texas Project, Units 1 and 2 (CAC Nos. MF2400-MF2409)
Project stage: Meeting
ML16302A4532016-12-12012 December 2016
Closeout of Request for Additional Information Questions That Are No Longer Applicable, Resolution of Generic Safety Issue (GSI) 191 (CAC Nos. MF2400-MF2409)
Project stage: RAI
ML16351A1502016-12-16016 December 2016
Correction Letter Closeout of Request for Information Questions That Are No Longer Applicable Associated with the Resolution of Generic Safety Issue 191 (CAC Nos. MF2400 - MF2409)
Project stage: RAI
ML16278A5982017-05-0202 May 2017
Letter, Environmental Assessment and Finding of No Significant Impact, Revise Licensing Basis as Documented in the UFSAR and Request for Exemptions, Risk-Informed Approach to Address GSI-191 (CAC MF2400 to MF2409)
Project stage: Other
ML16278A5992017-05-0202 May 2017
Environmental Assessment and Finding of No Significant Impact, Revise Licensing Basis as Documented in the UFSAR and Request for Exemptions, Risk-Informed Approach to Address GSI-191 (CAC MF2400 to MF2409)
Project stage: Other
ML17137A3252017-05-17017 May 2017
Safety Evaluation of LAR by South Texas Project Nuclear Operating Company to Adopt a Risk-Informed Resolution of Generic Safety Issue-191
Project stage: Approval
ML17151A8432017-06-16016 June 2017
OEDO-17-00326 - EDO Response to ACRS Chairman, Safety Evaluation of License Amendment Request by STP Nuclear Operating Company to Adopt a Risk-Informed Resolution of Generic Safety Issue-191
Project stage: Approval
NRC-2016-0092, South Texas Project, Units 1 and 2 - FRN: Exemption from the Requirements of 10 CFR 50.46 and 10 CFR Part 50, Appendix a, General Design Criteria 35, 38, 41 (CAC Nos. MF2402-MF2409)2017-07-11011 July 2017
South Texas Project, Units 1 and 2 - FRN: Exemption from the Requirements of 10 CFR 50.46 and 10 CFR Part 50, Appendix a, General Design Criteria 35, 38, 41 (CAC Nos. MF2402-MF2409)
Project stage: Approval
ML17037C8712017-07-11011 July 2017
Letter, Exemption from the Requirements of 10 CFR Part 50, Section 50.46 (CAC Nos. MF2402-MF2409)
Project stage: Approval
ML17037C8762017-07-11011 July 2017
FRN: Exemption from the Requirements of 10 CFR 50.46 and 10 CFR Part 50, Appendix a, General Design Criteria 35, 38, 41 (CAC Nos. MF2402-MF2409)
Project stage: Approval
ML17055A5002017-07-11011 July 2017
Enclosure 4 to Amendment Nos. 212 and 198, Resolution of Licensee Comments on Safety Evaluation - Risk-Informed Approach to Resolve Generic Safety Issue 191
Project stage: Approval
ML17019A0032017-07-11011 July 2017
Attachment 2 to Safety Evaluation - In-Vessel Thermal-Hydraulic Analysis, Issuance of Amendment Nos. 212 and 198 - Risk-Informed Approach to Resolve Generic Safety Issue 191
Project stage: Approval
ML17038A2232017-07-11011 July 2017
Issuance of Amendment Nos. 212 and 198 - Risk-Informed Approach to Resolve Generic Safety Issue 191
Project stage: Approval
ML17019A0022017-07-11011 July 2017
Safety Evaluation, Enclosure 3 to Amendment Nos. 212 and 198 - Risk-Informed Approach to Resolve Generic Safety Issue 191
Project stage: Approval
2016-05-31
[Table View] |
Summary of 7/28/16, Public Meeting with STP Nuclear Operating Company to Discuss the License Amendment and Exemption Requests to Use a Risk-Informed Approach to the Resolution of GSI-191 (CAC Nos. MF2400 - MF2409)| ML16238A527 |
| Person / Time |
|---|
| Site: |
South Texas  |
|---|
| Issue date: |
09/01/2016 |
|---|
| From: |
Lisa Regner
Plant Licensing Branch IV |
|---|
| To: |
South Texas |
|---|
| Regner L |
| References |
|---|
| CAC MF2400, CAC MF2401, CAC MF2402, CAC MF2403, CAC MF2404, CAC MF2405, CAC MF2406, CAC MF2407, CAC MF2408, CAC MF2409, GSI-191 |
| Download: ML16238A527 (5) |
|
|
|---|
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2024-05-06
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 September 1, 2016 LICENSEE: STP Nuclear Operating Company FACILITY: South Texas Project, Units 1 and 2
SUBJECT:
SUMMARY
OF JULY 28, 2016, PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY TO DISCUSS THE LICENSE AMENDMENT AND EXEMPTION REQUESTS TO USE A RISK-INFORMED APPROACH TO THE RESOLUTION OF GENERIC SAFETY ISSUE 191, "ASSESSMENT OF DEBRIS ACCUMULATION ON PWR SUMP PERFORMANCE" (CAC NOS. MF2400, MF2401, MF2402, MF2403, MF2404, MF2405, MF2406, MF2407, MF2408, AND MF2409)
- On July 28, 2016, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of STP Nuclear Operating Company (STPNOC, the licensee), at NRC Headquarters, Rockville, Maryland. The meeting notice and agenda, dated July 6, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML 1621 OA086. A list of meeting attendees is provided in the Enclosure to this meeting summary.
By letter dated June 19, 2013 (ADAMS Package Accession No. ML131750250), as supplemented by letters dated October 3, October 31, November 13, November 21 and December 23, 2013 (two letters); January 9, February 13, February 27, March 17, March 18, May 15 (two letters), May 22, June 25, and July 15, 2014; March 10, March 25, and August 20, 2015; and April 13, May 11, June 9, June 16, July, 18, July 21 (two letters), July 28, 2016 (ADAMS Accession Nos. ML13295A222, ML13323A673, ML13323A128, ML13338A165, ML14015A312, ML14015A311, ML14029A533, ML14052A110, ML14072A075, ML14086A383, ML14087A126, ML14149A353, ML14149A354, ML14149A439, ML14178A467, ML14202A045, ML15072A092, ML15091A440, ML15246A125, ML16111B204, ML16154A117, ML16176A148, ML16196A241, ML16209A226, ML16229A189, ML16230A232, and ML16221A393, respectively), STPNOC submitted exemption requests accompanied by a license amendment request for a risk-informed approach to resolve Generic Safety Issue (GSl)-191, "Assessment of Debris Accumulation on PWR [Pressurized-Water Reactor] Sump Performance," at South Texas Project, Units 1 and 2 (STP).
The purpose of this public meeting was to discuss the NRC staff's remaining unresolved concerns associated with the licensee's August 20, 2015, document, which provided information on STPNOC's revised methodology to resolve GSl-191 using a risk combined with a deterministic - 'Risk over Deterministic' or 'RoverD' - methodology. The meeting focused on providing followup information needed, following the request for additional information (RAI) responses provided in the May 11, June 16, July 18, July 21 (two letters), and July 18, 2016, letters.
The STPNOC staff provided a handout titled "STPNOC Public Meeting with NRC to Discuss STPNOC Risk-Informed GSl-191 Licensing Application" and can be found in ADAMS at Accession No. ML16210A044.
The STPNOC handout provided an overview of changes to the application that would be submitted as a supplement at the end of September 2016. The NRC staff then provided additional feedback on the RAI responses for the thermal-hydraulic analyses since the June 22, 2016, public meeting. 1 The NRC stated that over half of the questions were found acceptable. Several questions, however, lacked enough details for the NRC staff to make a safety determination, specifically in the areas of cladding oxide deposition on fuel assemblies, accident scenario progression, debris at fuel grid spacers, initial and boundary conditions for long-term core cooling, validation of closure relationships and the evaluation model, several requested sensitivity studies, and uncertainty and design margin.
The details of these questions will be provided to STPNOC staff as followup RAI questions.
STPNOC staff stated that they intended to provide responses to the remaining NRC staff questions in the September submittal. Other issues to be resolved by STPNOC in the September submittal include, a Rovero update including a new critical weld list and updates to small cold-leg breaks greater than 16-inch hot-leg breaks, and double-ended guillotine breaks; technical specification and updated final safety analysis updates; and followup RAI responses.
STPNOC stated it would also provide the basis for STPNOC's treatment of epoxy coatings in containment, the boric acid precipitation Westinghouse analysis, and a discussion on the changes to the risk analysis.
Additionally, risk clarifications needed will be discussed in a public meeting scheduled for August 29, 2016.
The NRC staff will issue additional RAI questions if docketed responses are needed.
There were no public comments or questions and no meeting feedback received.
If you have any questions, please contact me at 301-415-1906 or via e-mail at Lisa. Regner@nrc.gov.
Sincerely,
~~~~s-><- ~
Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv 1 The June 22, 2016, public meeting summary can be found in ADAMS at Accession No. ML16190A008.
LIST OF ATTENDEES JULY 28. 2016. PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY REGARDING RISK-INFORMED APPROACH TO RESOLUTION OF GSl-191 SOUTH TEXAS PROJECT. UNITS 1 AND 2 DOCKET NOS. 50-498 AND 50-499 NAME ORGANIZATION Lisa Regner U.S. Nuclear Regulatory Commission (NRC)
Vic Cusumano NRC Josh Kaizer NRC Reed Anzalone NRC Ashley Smith NRC Steven Laur NRC Andrea Russell NRC Osvaldo Pensado Southwest Research Institute (contractor for NRC)
Mike Murray STP Nuclear Operating Company (STPNOC)
Ernie Kee STPNOC Wayne Harrison STPNOC Steve Blossom STPNOC Wes Schulz STPNOC Drew Richards STPNOC Rodolfo Vaghetto Texas A&M University Dominic Munoz Alien Science & Technology Brian Krystek Engineering Planning Management, Inc.
Craig Sellers Calvert Cliffs Nuclear Power Plan Tim Sande Enercon Kip Walker Enercon Mo Dingler Wolf Creek Nuclear Operating Company Enclosure
ML16238A527 per email OFFICE NRR/DORL/LPL4-1 /PM NRR/DORL/LPL4-1 /LA NRR/DSS/SSIB/BC* NRR/DSS/SNPB/BC*
JBurkhardt VCusumano NAME LRegner JDean (PBlechman for) (ARussell for)
DATE 08/25/16 08/25/16 08/29/16 09/01116 OFFICE NRR/DE/ESGB/BC (A)* NRR/DORL/LPL4-1/BC NRR/DORL/LPL4-1/PM NAME JPeralta RPascarelli LRegner DATE 08/29/16 09/01/16 09/01/16 Letter to STP Nuclear Operating Company from Lisa M. Regner dated September 1, 2016.
SUBJECT:
SUMMARY
OF JULY 28, 2016, PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY TO DISCUSS THE LICENSE AMENDMENT AND EXEMPTION REQUESTS TO USE A RISK-INFORMED APPROACH TO THE RESOLUTION OF GENERIC SAFETY ISSUE 191, "ASSESSMENT OF DEBRIS ACCUMULATION ON PWR SUMP PERFORMANCE" (CAC NOS. MF2400, MF2401, MF2402, MF2403, MF2404, MF2405, MF2406, MF2407, MF2408, AND MF2409)
DISTRIBUTION:
PUBLIC LPL4-1 r/f RidsACRS_MailCTR Resource RidsNrrDeEpnb Resource RidsNrrDeEsgb Resource RidsNrrDorlLpl4-1 Resource RidsNrrDraApla Resource RidsNrrDssSnpb Resource RidsNrrDssSrxb Resource RidsNrrDssSsib Resource RidsNrrDssStsb Resource RidsNrrLAJBurkhardt Resource RidsNrrPMSouthTexas Resource RidsRgn4MailCenter Resource JBowen, EDO RIV TWertz, NRR ARussell, NRR/DSS/SSIB SSmith, NRR/DSS/SSIB PKlein, NRR/DE/ESGB MYoder, NRR/DE/ESGB VCusumano, NRR/DSS/SSIB ASmith, NRR/DSS/SSIB RAnzalone, NRR/DSS/SNPB JKaizer, NRR/DSS/SNPB SLaur, NRR, DRA,APLA