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MONTHYEARML16011A0702016-01-28028 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
Project stage: Meeting
2016-01-28
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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, Unit 1
SUBJECT:
SUMMARY
OF DECEMBER 1, 2015, PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY TO DISCUSS A PROPOSED EMERGENCY LICENSE AMENDMENT TO OPERATE FOR THE NEXT OPERATING CYCLE AFTER REMOVAL OF ONE UNRELIABLE CONTROL ROD IN SOUTH TEXAS PROJECT, UNIT 1 (CAC NO. MF7116)
On December 1, 2015, a pre-application 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 November 24, 2015, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML15329A086. The licensee's handouts from the meeting are available in ADAMS at Accession No. ML15334A397. A list of meeting attendees is provided in the Enclosure to thrs meeting summary.
The purpose of the meeting was for STPNOC staff to provide information on a proposed emergency license amendment request to modify technical specifications (TS) to address an unreliable control rod in South Texas Project (STP), Unit 1 The licensee proposed to operate for one operating cycle following the removal of the inoperable control rod while STPNOC decides how to repair or replace the control rod drive mechanism (CROM).
In its presentation, STPNOC staff provided information on the control rod configuration and the background of the issue. STP, Unit 1, has been in a refueling outage since October 2015 and was conducting control rod testing when Shutdown Bank Control Rod 06 was determined to be unreliable for operation. All other control rods in Unit 1 were inspected and tested, operating as expected. STPNOC stated that the condition was limited to control rod 06, and was due to the deformation of a rod holdout ring, which occurred durrng a ratcheted rod drop in 2012 (the rod unlatched unexpectedly, began to fall, and then re-latched while it was falling into the core).
STPNOC staff stated that the holdout ring is a component that is only used during rapid refueling operations. 1 Since the rod could not be mechanically latched, normal refueling operations were conducted. The licensee stated that it expected the CROM to continue to perform its intended function during plant operation.
STPNOC provided an overview of the license amendment request and TS change, stating that there were no methodology changes required and that the normal pressure boundary would not 1 STP, Units 1 and 2, are the only units in the fleet that have the capability to conduct rapid refueling operations where the control rods are withdrawn from the core. mechanically latched in place, and the reactor vessel head, head internals, and control rods are lifted and moved to the head staging area in one movement.
be penetrated to remove the control rod (i.e., no cuts are necessary; the control rod and drive shaft would be removed while the reactor head is removed). To repair the CROM and restore the rod to operation, STPNOC needs to repair or replace the CROM in situ since STP CRDMs are weld.ed to the head. This is an extremely complex operation since tooling needs to be fabricated, as well as testing and mock-ups; and replacement in situ has never been done in the United States.
STPNOC discussed additional changes to the plant to support the removal of the control rod such as removing fuses to prevent cycling the CROM and indicating lights, and installing a flow restrictor to maintain the existing thermal-hydraulic characteristics in the reactor core.
The NRC staff asked about the installation of the flow restrictor, its structural qualifications, and if other plants have used them. The licensee stated it would provide information on these questions in the submittal. A thimble plug will also be installed in the fuel assembly; this is a component recognized and analyzed in the updated final safety analysis report.
STPNOC stated that it would also provide in the submittal, a table with assumptions and critical parameters with and without the 06 control rod. The NRC staff questioned the licensee about the impacts to the worst-case design-basis accident (post-scram steam line break at the end of life). In this case, the analysis would have to account for one rod removed - the 06 control rod - and one additional rod stuck out of the core, and show adequate shutdown margin, not just for core, but also for any local in-core effects. The NRC staff also questioned the validity of using the Reload Safety Analysis Checklist as the basis for this amendment since it does not account for local in-core power effects. STPNOC stated it would address these questions in the submittal.
The licensee discussed its proposed schedule, stating it planned to submit the amendment request on December 4, 2015, as an emergency amendment, with approval requested by December 11, 2015. The licensee stated that it will not resume start-up activities until or unless the amendment is received.
The NRC staff stated that the schedule is extremely challenging and that an audit could improve efficiency. The STPNOC staff stated that they would make Westinghouse (STP contractor) and STP staff available for an audit as needed.
One member of the media (Platts) attended the meeting, but did not provide comments. No Public Meeting Feedback Forms were received.
L.: sa . Regner, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-498
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv
LIST OF ATTENDEES DECEMBER 1, 2015. MEETING WITH STP NUCLEAR OPERATING COMPANY REGARDING PROPOSED EMERGENCY AMENDMENT SOUTH TEXAS PROJECT, UNIT 1 DOCKET NO. 50-498 NAME ORGANIZATION Lisa Regner U.S. Nuclear Regulatory Commission (NRC)
Tim McGinty NRC Will MacFee NRC George Thomas NRC Ian Tseng NRC Matt Hamm NRC Jim Hickey NRC Mike Murray STP Nuclear Operating Company (STPNOC)
Wendy Brost STPNOC Roland Dunn STPNOC Michael Berg STPNOC Elaine Hiruo Platts, media James van Suskil NRG South Texas Enclosure
ML16011A070 OFFICE NRR/DORULPL4-1 /PM NRR/DORULPL4-1 /LA NRR/DE/EMCB/BC* NRR/DSS/SRXB/BC*
NAME LRegner JBurkhardt Tlupold EOesterle DATE 1/11/16 1/11/16 1/12/16 1/12/16 OFFICE NRR/DSS/SNPB/BC* NRR/DSS/STSB/BC* NRR/DORL/LPL4-1 /BC NRR/DORL/LPL4-1 /PM NAME JDean RElliott RPascarelli LRegner DATE 1/12/16 1/15/16 1/25/16 1/28/16
