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| | issue date = 10/27/2016 | | | issue date = 10/27/2016 |
| | title = 09/14/16 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) | | | title = 09/14/16 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) |
| | 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 = Powell G T | | | addressee name = Powell G |
| | addressee affiliation = South Texas Project Nuclear Operating Co | | | addressee affiliation = South Texas Project Nuclear Operating Co |
| | 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 | | | case reference number = CAC MF2400, CAC MF2401, CAC MF2402, CAC MF2403, CAC MF2404, CAC MF2405, CAC MF2406, CAC MF2407, CAC MF2408, CAC MF2409 |
| | document type = Meeting Summary | | | document type = Meeting Summary |
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| ==SUMMARY== | | ==SUMMARY== |
| OF SEPTEMBER 14, 2016, PUBLIC CONFERENCE CALL 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 September 14, 2016, a Category 1 public conference call 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. | | OF SEPTEMBER 14, 2016, PUBLIC CONFERENCE CALL 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 September 14, 2016, a Category 1 public conference call 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 September 1, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML 16258A451. | | The meeting notice and agenda, dated September 1, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML16258A451. |
| 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); | | 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. 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,'' | | 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 methodology combined with a deterministic methodology | | 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 methodology combined with a deterministic methodology |
| -'Risk over Deterministic' or 'RoverD.' | | -'Risk over Deterministic' or 'RoverD.' |
| The meeting focused on the NRC staff's questions following the request for additional information (RAI) responses provided in the May 11, June 16, July 18, July 21 (two letters), and July 28, 2016, letters. The STPNOC staff provided draft documents for the thermal-hydraulic and debris generation and transport analysis in response to questions from the NRC staff: Question Original Response Draft Response Accession No. and Date Accession No. and Date Follow-up RAl-33 ML 16209A226 7/18/2016 ML 16258A098 9/13/2016 Follow-up RAl-34 ML 16209A226 7/18/2016 ML 16258A208 9/14/2016 Follow-up RAl-37 ML 16196A241 6/16/2016 ML 16258A207 9/14/2016 SSIB-3-4 (SSIB) ML 16209A226 7/18/2016 ML 16258A096 9/13/2016 SNPB-3-2 (SNPB) ML 16258A 100 09/12/2016 ML 16154A127 5/11/2016 SNPB-3-2 Bullet 4 ML 16258A367 9/06/2016 SNPB-3-13 (SNPB) ML 16154A127 5/11/2016 ML 16258A104 9/12/2016 All questions are from NRC RAI Round 3 dated 4/11/2016 at Accession No. ML 16082A507. | | The meeting focused on the NRC staff's questions following the request for additional information (RAI) responses provided in the May 11, June 16, July 18, July 21 (two letters), and July 28, 2016, letters. The STPNOC staff provided draft documents for the thermal-hydraulic and debris generation and transport analysis in response to questions from the NRC staff: Question Original Response Draft Response Accession No. and Date Accession No. and Date Follow-up RAl-33 ML16209A226 7/18/2016 ML16258A098 9/13/2016 Follow-up RAl-34 ML16209A226 7/18/2016 ML16258A208 9/14/2016 Follow-up RAl-37 ML16196A241 6/16/2016 ML16258A207 9/14/2016 SSIB-3-4 (SSIB) ML16209A226 7/18/2016 ML16258A096 9/13/2016 SNPB-3-2 (SNPB) ML16258A100 09/12/2016 ML16154A127 5/11/2016 SNPB-3-2 Bullet 4 ML16258A367 9/06/2016 SNPB-3-13 (SNPB) ML16154A127 5/11/2016 ML16258A104 9/12/2016 All questions are from NRC RAI Round 3 dated 4/11/2016 at Accession No. ML16082A507. |
| For questions SSIB-3-4 and follow-up RAI 37, the NRC staff determined that the draft response that STPNOC sent in for the call was a good clarification, but was not required to be put on the docket since the NRC had enough information from the most recent RAI responses to consider the issues resolved. | | For questions SSIB-3-4 and follow-up RAI 37, the NRC staff determined that the draft response that STPNOC sent in for the call was a good clarification, but was not required to be put on the docket since the NRC had enough information from the most recent RAI responses to consider the issues resolved. |
| For follow-up questions RAls 33 and 34, the NRC staff discussed that it could neither determine the amount of margin between the containment pressure credited to prevent flashing and to suppress deaeration, nor the amount of containment pressure that might be available under less favorable conditions. | | For follow-up questions RAls 33 and 34, the NRC staff discussed that it could neither determine the amount of margin between the containment pressure credited to prevent flashing and to suppress deaeration, nor the amount of containment pressure that might be available under less favorable conditions. |
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| Also, the NRC staff discussed that the information on counter-current flow in the draft response appears complete, but that there were still aspects of the question that were not discussed fully including model validation. | | Also, the NRC staff discussed that the information on counter-current flow in the draft response appears complete, but that there were still aspects of the question that were not discussed fully including model validation. |
| Finally, the NRC staff requested information on the STP core bypass flow testing previously completed that shows that debris will not significantly impact this flow. The NRC staff reminded STPNOC that a final determination of acceptability cannot be made until a formal submittal is provided. | | Finally, the NRC staff requested information on the STP core bypass flow testing previously completed that shows that debris will not significantly impact this flow. The NRC staff reminded STPNOC that a final determination of acceptability cannot be made until a formal submittal is provided. |
| The probabilistic risk analysis model core damage frequency and large early release frequency values were submitted formally by STPNOC staff by letter dated September 12, 2016 (ADAMS Accession No. ML 16272A 162). There were no public comments or questions and no meeting feedback received. | | The probabilistic risk analysis model core damage frequency and large early release frequency values were submitted formally by STPNOC staff by letter dated September 12, 2016 (ADAMS Accession No. ML16272A162). There were no public comments or questions and no meeting feedback received. |
| If you have any questions, please contact me at 301-47 906 or via e-mail at Lisa.Regner@nrc.gov. | | If you have any questions, please contact me at 301-47 906 or via e-mail at Lisa.Regner@nrc.gov. |
| SincerelY, Docket Nos. 50-498 and 50-499 | | SincerelY, Docket Nos. 50-498 and 50-499 |
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| ==Enclosure:== | | ==Enclosure:== |
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| List of Attendees cc w/encl: Distribution via Lists DISTRIBUTION; PUBLIC LPL4-1 r/f RidsACRS_MailCTR Resource RidsNrrDeEpnb Resource RidsNrrDeEsgb Resource RidsNrrDorllpl4-1 Resource RidsNrrDraApla Resource RidsNrrDssSnpb Resource RidsNrrDssSrxb Resource RidsNrrDssSsib Resource Sincerely, /RAJ Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation RidsNrrDssStsb Resource RidsNrrLAJBurkhardt Resource RidsNrrPMSouthTexas Resource RidsRgn4MailCenter Resource JBowen, EDO RIV TWertz, NRR ARussell, NRR/DSS/SSIB RAnzalone, NRR/DSS/SNPB JKaizer, NRR/DSS/SNPB Slaur, NRR/DRA/APLA ADAMS Accession No. ML 16279A331 | | List of Attendees cc w/encl: Distribution via Lists DISTRIBUTION; PUBLIC LPL4-1 r/f RidsACRS_MailCTR Resource RidsNrrDeEpnb Resource RidsNrrDeEsgb Resource RidsNrrDorllpl4-1 Resource RidsNrrDraApla Resource RidsNrrDssSnpb Resource RidsNrrDssSrxb Resource RidsNrrDssSsib Resource Sincerely, /RAJ Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation RidsNrrDssStsb Resource RidsNrrLAJBurkhardt Resource RidsNrrPMSouthTexas Resource RidsRgn4MailCenter Resource JBowen, EDO RIV TWertz, NRR ARussell, NRR/DSS/SSIB RAnzalone, NRR/DSS/SNPB JKaizer, NRR/DSS/SNPB Slaur, NRR/DRA/APLA ADAMS Accession No. ML16279A331 |
| *per email OFFICE NRR/DORL/LPL4-1 | | *per email OFFICE NRR/DORL/LPL4-1 |
| /PM NRR/DORL/LPL4-1 | | /PM NRR/DORL/LPL4-1 |
Letter Sequence Meeting |
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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
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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] |
09/14/16 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)ML16279A331 |
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South Texas ![STP Nuclear Operating Company icon.png](/w/images/9/9c/STP_Nuclear_Operating_Company_icon.png) |
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Issue date: |
10/27/2016 |
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From: |
Lisa Regner Plant Licensing Branch IV |
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To: |
Gerry Powell South Texas |
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Regner L |
References |
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CAC MF2400, CAC MF2401, CAC MF2402, CAC MF2403, CAC MF2404, CAC MF2405, CAC MF2406, CAC MF2407, CAC MF2408, CAC MF2409 |
Download: ML16279A331 (5) |
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Category:Meeting Summary
MONTHYEARML24120A2362024-05-0606 May 2024 Summary of March 25, 2024, Presubmittal Teleconference with STP Nuclear Operating Company to Discuss Changes to the Quality Assurance Plan for South Texas Project, Units 1 and 2 ML22252A0432022-09-12012 September 2022 Summary of August 31, 2022, Webinar with STP Nuclear Operating Company to Discuss a Proposed LAR to Revise the Dose Consequence Analysis for Main Steam Line Break and Locked Rotor Analysis Events for STP, Units 1 & 2 ML22147A0932022-06-0606 June 2022 2021 Annual Assessment Public Meeting Summary ML21236A3082021-09-10010 September 2021 Regulatory Audit Summary Regarding License Amendment Request to Revise Moderator Temperature Coefficient Surveillance Requirements ML21222A1192021-08-12012 August 2021 Summary of Meeting with STP Nuclear Operating Company Regarding the License Amendment Request to Revise the Moderator Temperature Coefficient Surveillance Requirements for South Texas Project, Units 1 and 2 ML21140A3892021-05-24024 May 2021 Riv Column 1 EOC 2020 Public Meeting Summary ML20279A8152020-10-20020 October 2020 Summary of September 14, 2020, Presubmittal Teleconference with STP Nuclear Operating Company Regarding the Proposed LAR to Revise the Moderator Temperature Coefficient Surveillance Requirement for South Texas Project, Units 1 and 2 (EPID L ML20189A2832020-07-0707 July 2020 Summary of Region IV Annual Assessment Public Meeting ML20163A5522020-06-12012 June 2020 Summary of April 21, 2020, Teleconference with STP Nuclear Operating Company to Discuss the License Amendment Request to Revise the Emergency Plan for South Texas Project, Units 1 and 2 ML20140A2612020-05-27027 May 2020 May 5, 2020, Summary of Teleconference with STP Nuclear Operating Company to Discuss a Proposed Exigent License Amendment Request to Revise the Pressure of the Safety Injection Accumulators for South Texas Project, Unit 1 ML20107J5482020-04-15015 April 2020 Teleconference Regarding NRC Observations on the March 30, 2020, License Amendment Request to Revise the Emergency Plan STP Nuclear Operation Company South Texas Project, Units 1 and 2, Dockets 50-498 and 50-499 ML20049A0572020-02-26026 February 2020 Summary of February 6, 2020, Meeting with STP Nuclear Operating Company to Discuss a Proposed License Amendment Request to Revise the Emergency Plan for South Texas Project, Units 1 and 2 (EPID L- 2020-LRM-0004) ML19350C5902019-12-17017 December 2019 12/3/19, Summary of Teleconference with STP Nuclear Operating Company to Discuss a Proposed License Amendment Request to Revise the Emergency Plan for South Texas Project, Units 1 and 2, ML19102A0162019-04-16016 April 2019 4/10/2019 Summary of Public Teleconference Regarding Potential Submission of a Relief Request to Allow Use of Carbon Fiber Reinforced Polymer for Selected Piping Repairs at South Texas, Units 1 and 2 ML17005A1002017-01-18018 January 2017 January 4, 2017, Summary of Meeting to Discussion Stp'S Response to Request for Additional Information the Revised Aluminum Bronze Selective Leaching Aging Management Program for All Potentially Susceptible Welds Throughout the Facility 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) ML16272A4362016-10-14014 October 2016 Summary of Public Preapplication Meeting with STP Nuclear Operating Company to Discuss Possible License Amendment Request to Modify Emergency Response Organization for South Texas Project, Units 1 and 2 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) 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) ML16218A3672016-08-30030 August 2016 07/21/2016 Summary of Public Teleconference Meeting with STP Nuclear Operating Company Discussing Revisions to License Renewal Application Aluminum Bronze Selective Leaching Aging Management Program and Background Document ML16236A0322016-08-23023 August 2016 08/18/2016 Summary of Conference Call With STP Nuclear Operating Company Concerning the Aluminum Bronze Selective Leaching Aging Management Program in the South Texas Project, License Renewal Application ML16236A3042016-08-23023 August 2016 08/11/2016 Summary of Conference Call Between NRC and STP Nuclear Operating Company Concerning the 2016 Annual Update to the South Texas Project License Renewal Application ML16180A0142016-07-25025 July 2016 Summary of Meeting Discussion Between South Texas Project, Units 1 and 2, and NRC Staff Regarding the Revised Aluminum Bronze Selective Leaching Aging Management Program for All Potentially Susceptible Welds Throughout the Facility 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) ML16188A0072016-07-0707 July 2016 Summary of Telecon Held on July 5, 2016 With STP Nuclear Operating Company, Concerning Additional Information Pertaining to the STP, License Renewal Application (TAC. Nos. ME4936, ME4937) ML16188A0112016-07-0707 July 2016 Summary of Telecon Held on July 5, 2016 With STP Nuclear Operating Company, Concerning Additional Information Pertaining to the STP, License Renewal Application (TAC Nos. ME4936, ME4937) ML16188A0092016-07-0707 July 2016 Summary of Telecon Held on July 5, 2016 with STP Nuclear Operating Company, Concerning Additional Information Pertaining to the STP, License Renewal Application (Tac. Nos. ME4936, ME4937) - Enclosure 1 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 ML16166A0272016-06-14014 June 2016 Summary of Telephone Conference Call Held on 06/08/2016, Between the USNRC and STP Nuclear Operating Company Response to Request for Additional Information B2.1.18-6 Pertaining to the South Texas Project License Renewal Application 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) 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) 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) ML16081A2052016-03-24024 March 2016 Summary of Meeting with STP Nuclear Operating Company to Discuss Potential License Amendment Request for South Texas Project, Unit 1 Regarding Permanent Operation with 56 Control Rods ML16074A0412016-03-14014 March 2016 Summary of a Call Held on March 10, 2016, between USNRC and STPNOC, Concerning the Staff's Upcoming Audit Regarding the Amp for the Loss Of Material Due to Selective of Al-Br Welds in the ECW System for the STP LRA (TAC Nos. ME4936 And ME4937) ML16060A1272016-03-0707 March 2016 February 23, 2016, Summary of Conference Calls Held between NRC and STP Concerning Staff's Review of Submerged Closure Bolting Portion of 2014 Annual Update for STP License Renewal Application (TAC ME4936 And ME4937) 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 ML16035A4802016-02-12012 February 2016 Jsc Meeting Summary Attachment 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 ML16011A0702016-01-28028 January 2016 Summary of Preapplication Meeting with STP Nuclear Operating Company to Discuss Exigent License Amendment Request to Operate Following Removal of a D6 Control Rod at South Texas Project, Unit 1 ML16033A0072016-01-19019 January 2016 January 19, 2016, Summary of Public Meeting with STP to Discuss the Plant-Specific Aging Management Program, Selective Leaching of Aluminum Bronze, Associated with STP's License Renewal Application ML16013A0662016-01-14014 January 2016 Summary of 11/9 and 12/30/15 Conference Calls with STP Nuclear Operating Company to Discuss the Fall 2015 Steam Generator Tube Inspection Activities (CAC No. A11018) ML15308A0112015-11-30030 November 2015 Record of Conference Call on STP Request for Additional Information Set 34 ML15201A0032015-07-30030 July 2015 7/2/15 Summary of 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, Units 1 and 2 ML15177A1042015-07-21021 July 2015 4/22/2015 Summary of 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, Units 1 and 2 (TAC MF2400 t ML15177A2742015-07-21021 July 2015 5/6/2015 Summary of 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, Units 1 and 2 (TAC Nos. MF24 ML15180A2732015-07-15015 July 2015 6/3/2015 Summary of 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, Units 1 and 2 (TAC MF2400 to ML15139A3442015-06-11011 June 2015 Summary of Telephone Conference Call Held on May 12, 2015 Between the U.S. Nuclear Regulatory Commission and STP Nuclear Operating Company, Concerning Request for Additional Information, Set 31, Pertaining to the South Texas Project, Licens ML15103A0022015-05-13013 May 2015 Summary of 4/8/15 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, Units 1 and 2 ML15084A0032015-04-0606 April 2015 2/4/15 Summary of 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, Units 1 and 2 (TAC MF2400-MF24 ML15084A0042015-04-0101 April 2015 2/5/2015 Summary of Presubmittal Meeting with STP Nuclear Operating Company to Discuss Integrated Leak Rate Testing Program License Amendment Request for South Texas, Units 1 and 2 2024-05-06
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 27, 2016 LICENSEE:
STP Nuclear Operating Company FACILITY:
South Texas Project, Units 1 and 2
SUBJECT:
SUMMARY
OF SEPTEMBER 14, 2016, PUBLIC CONFERENCE CALL 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 September 14, 2016, a Category 1 public conference call 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 September 1, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML16258A451.
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 methodology combined with a deterministic methodology
-'Risk over Deterministic' or 'RoverD.'
The meeting focused on the NRC staff's questions following the request for additional information (RAI) responses provided in the May 11, June 16, July 18, July 21 (two letters), and July 28, 2016, letters. The STPNOC staff provided draft documents for the thermal-hydraulic and debris generation and transport analysis in response to questions from the NRC staff: Question Original Response Draft Response Accession No. and Date Accession No. and Date Follow-up RAl-33 ML16209A226 7/18/2016 ML16258A098 9/13/2016 Follow-up RAl-34 ML16209A226 7/18/2016 ML16258A208 9/14/2016 Follow-up RAl-37 ML16196A241 6/16/2016 ML16258A207 9/14/2016 SSIB-3-4 (SSIB) ML16209A226 7/18/2016 ML16258A096 9/13/2016 SNPB-3-2 (SNPB) ML16258A100 09/12/2016 ML16154A127 5/11/2016 SNPB-3-2 Bullet 4 ML16258A367 9/06/2016 SNPB-3-13 (SNPB) ML16154A127 5/11/2016 ML16258A104 9/12/2016 All questions are from NRC RAI Round 3 dated 4/11/2016 at Accession No. ML16082A507.
For questions SSIB-3-4 and follow-up RAI 37, the NRC staff determined that the draft response that STPNOC sent in for the call was a good clarification, but was not required to be put on the docket since the NRC had enough information from the most recent RAI responses to consider the issues resolved.
For follow-up questions RAls 33 and 34, the NRC staff discussed that it could neither determine the amount of margin between the containment pressure credited to prevent flashing and to suppress deaeration, nor the amount of containment pressure that might be available under less favorable conditions.
The NRC staff and licensee discussed several ways to prove that this margin exists to be able to satisfy the NRC staff's criteria.
For follow-up question RAI 34, the NRC staff noted that the information provided was beneficial for the staff to understand the plant conditions that could occur. The NRC staff and licensee discussed the answers to SNPB-3-2 and SNPB-3-13.
The NRC staff stated that the answers to SNPB-3-2 concerning the 16-inch bounding break appear to address the staff's concerns.
For SNPB-3-13 concerning the counter-current flow limitation, the NRC staff noted that Figure 2 and Figure 3 are the same chart. The corrected charts need to be included in the final STPNOC submittal (planned for mid-October).
Also, the NRC staff discussed that the information on counter-current flow in the draft response appears complete, but that there were still aspects of the question that were not discussed fully including model validation.
Finally, the NRC staff requested information on the STP core bypass flow testing previously completed that shows that debris will not significantly impact this flow. The NRC staff reminded STPNOC that a final determination of acceptability cannot be made until a formal submittal is provided.
The probabilistic risk analysis model core damage frequency and large early release frequency values were submitted formally by STPNOC staff by letter dated September 12, 2016 (ADAMS Accession No. ML16272A162). There were no public comments or questions and no meeting feedback received.
If you have any questions, please contact me at 301-47 906 or via e-mail at Lisa.Regner@nrc.gov.
SincerelY, Docket Nos. 50-498 and 50-499
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv ( d / / if64/Jlti--**--
Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation LIST OF ATTENDEES SEPTEMBER
- 14. 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 CJ Fong Steven Laur Mike Murray Rob Engen Ernie Kee Wayne Harrison Steve Blossom Wes Schulz Drew Richards Rodolfo Vaghetto Dominic Munoz Craig Sellers Tim Sande Ron Holloway Eric Fulhage 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 STP Nuclear Operating Company (STPNOC) STPNOC STPNOC STPNOC STPNOC STPNOC STPNOC Texas A&M University Alien Science and Technology Calvert Cliffs Nuclear Power Plan Enercon Wolf Creek Nuclear Generating Corp. Engineering, Planning & Management, Inc. Enclosure 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 Lists DISTRIBUTION; PUBLIC LPL4-1 r/f RidsACRS_MailCTR Resource RidsNrrDeEpnb Resource RidsNrrDeEsgb Resource RidsNrrDorllpl4-1 Resource RidsNrrDraApla Resource RidsNrrDssSnpb Resource RidsNrrDssSrxb Resource RidsNrrDssSsib Resource Sincerely, /RAJ Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation RidsNrrDssStsb Resource RidsNrrLAJBurkhardt Resource RidsNrrPMSouthTexas Resource RidsRgn4MailCenter Resource JBowen, EDO RIV TWertz, NRR ARussell, NRR/DSS/SSIB RAnzalone, NRR/DSS/SNPB JKaizer, NRR/DSS/SNPB Slaur, NRR/DRA/APLA ADAMS Accession No. ML16279A331
- 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 Rlukes DATE 10/04/16 10/18/16 10/26/16 10/05/16 OFFICE NRR/DRA/APLAITL
/BC NRR/DORL/LPL4-1
/PM NAME CJ Fong RPascarelli LRegner DATE 10/20/16 10/27/16 10/27/16 OFFICIAL RECORD COPY