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| | number = ML16028A152 | | | number = ML16028A152 |
| | issue date = 02/18/2016 | | | issue date = 02/18/2016 |
| | title = 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 (CAC Nos. MF240 | | | title = 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 |
| | 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 = |
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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 | | | case reference number = CAC MF2400, CAC MF2401 |
| | document type = Meeting Summary | | | document type = Meeting Summary |
| | page count = 5 | | | page count = 5 |
| | project = CAC:MF2400, CAC:MF2401 | | | project = CAC:MF2400, CAC:MF2401 |
| | stage = Supplement | | | stage = Meeting |
| }} | | }} |
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| =Text= | | =Text= |
| {{#Wiki_filter:LICENSEE: STP Nuclear Operating Company FACILITY: South Texas Project, Units 1 and 2 | | {{#Wiki_filter:LICENSEE: STP Nuclear Operating Company FACILITY: South Texas Project, Units 1 and 2 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| SUMMARY OF JANUARY 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 January 14, 2016, a public teleconference 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 January 4, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML 16004A326. A list of meeting attendees is provided in the Enclosure to this meeting summary. By letter dated June 19, 2013 (ADAMS Accession No. ML 131750250), as supplemented by letters dated October 3, October 31, November 13, November 21, and December 23, 2013 (two letters); and January 9, February 13, February 27, March 17, March 18, May 15 (two letters), May 22, June 25, and July 15, 2014; and March 10, March 25, and August 20, 2015 (ADAMS Accession Nos. ML 13295A222, ML 13323A673, ML 13323A128, ML 13338A165, ML 14015A312, ML14015A311, ML14029A533, ML14052A053, ML14072A076, ML14086A383, ML14087A126, ML 14149A353, ML 14149A354, ML 14149A434, ML 14178A481, ML 14202A045, ML 15072A092, ML 15091A440, and ML 15246A 125, respectively), STPNOC submitted exemption requests accompanied by a license amendment request (LAR) for a risk-informed approach to resolve Generic Safety Issue (GSl)-191, "Assessment of Debris Accumulation on PWR Water Reactor] Sump Performance," at South Texas Project, Units 1 and 2 (STP). The purpose of this public teleconference call was to discuss the NRC staff's remaining unresolved concerns associated with the licensee's letter dated August 20, 2015. This submittal provided information on STPNOC's revised methodology to resolve GSl-191 using a nsk combined with a deterministic -'Risk over Deterministic' or 'RoverD' -methodology. The NRC staff discussed several follow-up questions related to debris generation and transport calculations. Specifically, questions remain about the type, size, and quantity of debris that transports to the strainers and what surrogate materials were used to represent these in the deterministic test conducted by STPNOC. Also. the staff is unclear about STPNOC's use of fines, miscellaneous debris, and large debris in the Rovero analysis. The NRC staff suggested that an audit of the licensee's debris generation and transport.analyses would aid in the review. The NRC staff discussed the status of its thermal-hydraulic review and asked for an update from STPNOC on the resolution of draft requests for additional information (RAls) sent in an e-mail dated December 11, 2015 (ADAMS Accession No. ML 16022A 176). The NRC staff questioned whether a sensitivity study had been conducted for the axial power shape for the long-term core cooling analysis. STPNOC staff stated it believes the axial power shape conducted to be limiting. The licensee stated that the quality assurance analysis had been completed and that it would support an NRC regulatory audit to review the analysis. The NRC staff stated that it was completing its safety evaluation with open items and would provide questions to resolve these open items by the end of February. The resolution of these open items would be facilitated by the audit suggested by STPNOC. A draft RAI timeframe of early February was discussed as a goal for NRC staff, with a mid-to-late February audit timeframe. The NRC staff also requested to review the STP current licensing basis Hot Leg Switchover time calculation to help the staff resolve a remaining open item concerning boric acid precipitation. The NRC staff suggested a regulatory audit at Westinghouse Offices in Rockville as a possible solution. The NRC and STPNOC staff discussed an open item related to resolution of Westinghouse Nuclear Safety Advisory Letters (NSALs) and lnfoGram (IG) resolution as they impact STP's containment mass and energy analysis which, in turn, impacts resolution of GSl-191 (e.g., sump level and temperature). STPNOC stated that it had written corrective action program items for the NSALs and IG and would provide information to the NRC staff on the actions taken. The NRC staff stated that a draft of the Round 3 RAI was available and would be sent by e-mail following the meeting (this is available in ADAMS at Accession No. ML 16022A008). All of the questions discussed at this meeting are provided in the draft RAI. Future clarification calls and public meetings will be scheduled as necessary. The NRC staff stressed that the draft Round 3 RAI provided is not likely to be the last set of questions since neither the risk-nor the hydraulic-related questions were included. These draft questions will be provided when they become available, possibly in 4 to 6 weeks. No members of the public attended the meeting and no Public Meeting Feedback Forms were 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 | | |
| | ==SUMMARY== |
| | OF JANUARY 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 January 14, 2016, a public teleconference 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 January 4, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML16004A326. A list of meeting attendees is provided in the Enclosure to this meeting summary. |
| | By letter dated June 19, 2013 (ADAMS Accession No. ML131750250), as supplemented by letters dated October 3, October 31, November 13, November 21, and December 23, 2013 (two letters); and January 9, February 13, February 27, March 17, March 18, May 15 (two letters), |
| | May 22, June 25, and July 15, 2014; and March 10, March 25, and August 20, 2015 (ADAMS Accession Nos. ML13295A222, ML13323A673, ML13323A128, ML13338A165, ML14015A312, ML14015A311, ML14029A533, ML14052A053, ML14072A076, ML14086A383, ML14087A126, ML14149A353, ML14149A354, ML14149A434, ML14178A481, ML14202A045, ML15072A092, ML15091A440, and ML15246A125, respectively), STPNOC submitted exemption requests accompanied by a license amendment request (LAR) 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 teleconference call was to discuss the NRC staff's remaining unresolved concerns associated with the licensee's letter dated August 20, 2015. This submittal provided information on STPNOC's revised methodology to resolve GSl-191 using a nsk combined with a deterministic - 'Risk over Deterministic' or 'RoverD' - methodology. |
| | The NRC staff discussed several follow-up questions related to debris generation and transport calculations. Specifically, questions remain about the type, size, and quantity of debris that transports to the strainers and what surrogate materials were used to represent these in the deterministic test conducted by STPNOC. Also. the staff is unclear about STPNOC's use of fines, miscellaneous debris, and large debris in the Rovero analysis. The NRC staff suggested that an audit of the licensee's debris generation and transport.analyses would aid in the review. |
| | |
| | The NRC staff discussed the status of its thermal-hydraulic review and asked for an update from STPNOC on the resolution of draft requests for additional information (RAls) sent in an e-mail dated December 11, 2015 (ADAMS Accession No. ML16022A176). The NRC staff questioned whether a sensitivity study had been conducted for the axial power shape for the long-term core cooling analysis. STPNOC staff stated it believes the axial power shape conducted to be limiting. The licensee stated that the quality assurance analysis had been completed and that it would support an NRC regulatory audit to review the analysis. The NRC staff stated that it was completing its safety evaluation with open items and would provide questions to resolve these open items by the end of February. The resolution of these open items would be facilitated by the audit suggested by STPNOC. A draft RAI timeframe of early February was discussed as a goal for NRC staff, with a mid-to-late February audit timeframe. |
| | The NRC staff also requested to review the STP current licensing basis Hot Leg Switchover time calculation to help the staff resolve a remaining open item concerning boric acid precipitation. The NRC staff suggested a regulatory audit at Westinghouse Offices in Rockville as a possible solution. |
| | The NRC and STPNOC staff discussed an open item related to resolution of Westinghouse Nuclear Safety Advisory Letters (NSALs) and lnfoGram (IG) resolution as they impact STP's containment mass and energy analysis which, in turn, impacts resolution of GSl-191 (e.g., sump level and temperature). STPNOC stated that it had written corrective action program items for the NSALs and IG and would provide information to the NRC staff on the actions taken. |
| | The NRC staff stated that a draft of the Round 3 RAI was available and would be sent by e-mail following the meeting (this is available in ADAMS at Accession No. ML16022A008). All of the questions discussed at this meeting are provided in the draft RAI. Future clarification calls and public meetings will be scheduled as necessary. The NRC staff stressed that the draft Round 3 RAI provided is not likely to be the last set of questions since neither the risk- nor the thermal-hydraulic-related questions were included. These draft questions will be provided when they become available, possibly in 4 to 6 weeks. |
| | No members of the public attended the meeting and no Public Meeting Feedback Forms were received. |
| | |
| | If you have any questions, please contact me at 301-415-1906 or via e-mail at Lisa. Regner@nrc.gov. |
| | Sincerely, 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 |
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| ==Enclosure:== | | ==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 LIST OF ATTENDEES JANUARY 14, 2016, PUBLIC CONFERENCE CALL WITH STP NUCLEAR OPERATING COMPANY REGARDING RISK-INFORMED APPROACH TO RESOLUTION OF GSl-191 NAME Lisa Regner Robert Pascarelli Matt Yoder Josh Kaizer Paul Klein Ahsan Sallman Steve Smith John Tsao Steve Laur Caroline Tilton Andrea Russell Ashley Smith Reed Anzalone Osvaldo Pensado Rob Engen Ernie Kee Wayne Harrison Linda Dyer Wes Schulz Charlie Albury Bruce Letellier Janet Leavitt Dominic Munoz Rodolfo Vaghetto Stephen Kinsey 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 NRC NRC NRC NRC NRC NRC Southwest Research Institute (contractor for NRC) STP Nuclear Operating Company (STPNOC) STPNOC STPNOC STPNOC STPNOC STPNOC Alion Science & Technology Alion Science & Technology Alien Science & Technology Texas A&M MPR Associates, Inc. Enclosure
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| ML 16028A152 CFong, NRR/DRA/APLA Slaur, NRR/DRA/APLA MBanks, ACRS KWest, NRR/DSS/STSB CTildon, NRR/DSS/STSB ASallman, NRR/DSS/SCVB JTsao, NRR/DE/EPNB LWard, NRR/DSS/SNPB MColon, NRR/DE/ESGB LRobinson, NRR/DSS/SSIB JDozier, NRR/DRA/ARCB *via email OFFICE NRR/DORL/LPL4-1/PM N RR/DORL/LPL4-1 /LA NRR/DSS/SSI B/BC NRR/DSS/SNPB/BC NAME LRegner JBurkhardt VCusumano JDean DATE 2/01/2016 2/01/2016 2/02/2016 2/17/2016 OFFICE NRR/DSS/STSB/BC N RR/ORA/ AP LA/BC NRR/DE/ESGB/BC NRR/DE/EPNB/BC NAME RElliott SRosenberg GKulesa DAiiey DATE 2/11/2016 2/03/2016 2/02/2016 2/02/2016 OFFICE NRR/DORL/LPL4-1 /BC NRR/DORL/LPL4-1 /PM NAME RPascarelli LRegner DATE 2/18/2016 2/18/2016}}
| | List of Attendees cc w/encl: Distribution via Listserv |
| | |
| | LIST OF ATTENDEES JANUARY 14, 2016, PUBLIC CONFERENCE CALL 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) |
| | Robert Pascarelli NRC Matt Yoder NRC Josh Kaizer NRC Paul Klein NRC Ahsan Sallman NRC Steve Smith NRC John Tsao NRC Steve Laur NRC Caroline Tilton NRC Andrea Russell NRC Ashley Smith NRC Reed Anzalone NRC Osvaldo Pensado Southwest Research Institute (contractor for NRC) |
| | Rob Engen STP Nuclear Operating Company (STPNOC) |
| | Ernie Kee STPNOC Wayne Harrison STPNOC Linda Dyer STPNOC Wes Schulz STPNOC Charlie Albury STPNOC Bruce Letellier Alion Science & Technology Janet Leavitt Alion Science & Technology Dominic Munoz Alien Science & Technology Rodolfo Vaghetto Texas A&M Stephen Kinsey MPR Associates, Inc. |
| | Enclosure |
| | |
| | ML16028A152 *via email OFFICE NRR/DORL/LPL4-1/PM N RR/DORL/LPL4-1 /LA NRR/DSS/SSI B/BC NRR/DSS/SNPB/BC NAME LRegner JBurkhardt VCusumano JDean DATE 2/01/2016 2/01/2016 2/02/2016 2/17/2016 OFFICE NRR/DSS/STSB/BC N RR/ORA/AP LA/BC NRR/DE/ESGB/BC NRR/DE/EPNB/BC NAME RElliott SRosenberg GKulesa DAiiey DATE 2/11/2016 2/03/2016 2/02/2016 2/02/2016 OFFICE NRR/DORL/LPL4-1 /BC NRR/DORL/LPL4-1 /PM NAME RPascarelli LRegner DATE 2/18/2016 2/18/2016}} |
Letter Sequence Meeting |
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CAC:MF2400, Control Room Habitability (Approved, Closed) CAC:MF2401, 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
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
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
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
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
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
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
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
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
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] |
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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
[Table view] |
Text
LICENSEE: STP Nuclear Operating Company FACILITY: South Texas Project, Units 1 and 2
SUBJECT:
SUMMARY
OF JANUARY 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 January 14, 2016, a public teleconference 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 January 4, 2016, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML16004A326. A list of meeting attendees is provided in the Enclosure to this meeting summary.
By letter dated June 19, 2013 (ADAMS Accession No. ML131750250), as supplemented by letters dated October 3, October 31, November 13, November 21, and December 23, 2013 (two letters); and January 9, February 13, February 27, March 17, March 18, May 15 (two letters),
May 22, June 25, and July 15, 2014; and March 10, March 25, and August 20, 2015 (ADAMS Accession Nos. ML13295A222, ML13323A673, ML13323A128, ML13338A165, ML14015A312, ML14015A311, ML14029A533, ML14052A053, ML14072A076, ML14086A383, ML14087A126, ML14149A353, ML14149A354, ML14149A434, ML14178A481, ML14202A045, ML15072A092, ML15091A440, and ML15246A125, respectively), STPNOC submitted exemption requests accompanied by a license amendment request (LAR) 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 teleconference call was to discuss the NRC staff's remaining unresolved concerns associated with the licensee's letter dated August 20, 2015. This submittal provided information on STPNOC's revised methodology to resolve GSl-191 using a nsk combined with a deterministic - 'Risk over Deterministic' or 'RoverD' - methodology.
The NRC staff discussed several follow-up questions related to debris generation and transport calculations. Specifically, questions remain about the type, size, and quantity of debris that transports to the strainers and what surrogate materials were used to represent these in the deterministic test conducted by STPNOC. Also. the staff is unclear about STPNOC's use of fines, miscellaneous debris, and large debris in the Rovero analysis. The NRC staff suggested that an audit of the licensee's debris generation and transport.analyses would aid in the review.
The NRC staff discussed the status of its thermal-hydraulic review and asked for an update from STPNOC on the resolution of draft requests for additional information (RAls) sent in an e-mail dated December 11, 2015 (ADAMS Accession No. ML16022A176). The NRC staff questioned whether a sensitivity study had been conducted for the axial power shape for the long-term core cooling analysis. STPNOC staff stated it believes the axial power shape conducted to be limiting. The licensee stated that the quality assurance analysis had been completed and that it would support an NRC regulatory audit to review the analysis. The NRC staff stated that it was completing its safety evaluation with open items and would provide questions to resolve these open items by the end of February. The resolution of these open items would be facilitated by the audit suggested by STPNOC. A draft RAI timeframe of early February was discussed as a goal for NRC staff, with a mid-to-late February audit timeframe.
The NRC staff also requested to review the STP current licensing basis Hot Leg Switchover time calculation to help the staff resolve a remaining open item concerning boric acid precipitation. The NRC staff suggested a regulatory audit at Westinghouse Offices in Rockville as a possible solution.
The NRC and STPNOC staff discussed an open item related to resolution of Westinghouse Nuclear Safety Advisory Letters (NSALs) and lnfoGram (IG) resolution as they impact STP's containment mass and energy analysis which, in turn, impacts resolution of GSl-191 (e.g., sump level and temperature). STPNOC stated that it had written corrective action program items for the NSALs and IG and would provide information to the NRC staff on the actions taken.
The NRC staff stated that a draft of the Round 3 RAI was available and would be sent by e-mail following the meeting (this is available in ADAMS at Accession No. ML16022A008). All of the questions discussed at this meeting are provided in the draft RAI. Future clarification calls and public meetings will be scheduled as necessary. The NRC staff stressed that the draft Round 3 RAI provided is not likely to be the last set of questions since neither the risk- nor the thermal-hydraulic-related questions were included. These draft questions will be provided when they become available, possibly in 4 to 6 weeks.
No members of the public attended the meeting and no Public Meeting Feedback Forms were received.
If you have any questions, please contact me at 301-415-1906 or via e-mail at Lisa. Regner@nrc.gov.
Sincerely, 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
LIST OF ATTENDEES JANUARY 14, 2016, PUBLIC CONFERENCE CALL 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)
Robert Pascarelli NRC Matt Yoder NRC Josh Kaizer NRC Paul Klein NRC Ahsan Sallman NRC Steve Smith NRC John Tsao NRC Steve Laur NRC Caroline Tilton NRC Andrea Russell NRC Ashley Smith NRC Reed Anzalone NRC Osvaldo Pensado Southwest Research Institute (contractor for NRC)
Rob Engen STP Nuclear Operating Company (STPNOC)
Ernie Kee STPNOC Wayne Harrison STPNOC Linda Dyer STPNOC Wes Schulz STPNOC Charlie Albury STPNOC Bruce Letellier Alion Science & Technology Janet Leavitt Alion Science & Technology Dominic Munoz Alien Science & Technology Rodolfo Vaghetto Texas A&M Stephen Kinsey MPR Associates, Inc.
Enclosure
ML16028A152 *via email OFFICE NRR/DORL/LPL4-1/PM N RR/DORL/LPL4-1 /LA NRR/DSS/SSI B/BC NRR/DSS/SNPB/BC NAME LRegner JBurkhardt VCusumano JDean DATE 2/01/2016 2/01/2016 2/02/2016 2/17/2016 OFFICE NRR/DSS/STSB/BC N RR/ORA/AP LA/BC NRR/DE/ESGB/BC NRR/DE/EPNB/BC NAME RElliott SRosenberg GKulesa DAiiey DATE 2/11/2016 2/03/2016 2/02/2016 2/02/2016 OFFICE NRR/DORL/LPL4-1 /BC NRR/DORL/LPL4-1 /PM NAME RPascarelli LRegner DATE 2/18/2016 2/18/2016
