Letter Sequence Meeting |
|---|
TAC:MF2400, Control Room Habitability (Approved, Closed) TAC:MF2401, Control Room Habitability (Approved, Closed) TAC:MF2402, Control Room Habitability (Open) TAC:MF2403, Control Room Habitability (Open) TAC:MF2404, Control Room Habitability (Open) TAC:MF2405, Control Room Habitability (Open) TAC:MF2406, Control Room Habitability (Open) TAC:MF2407, Control Room Habitability (Open) TAC:MF2408, Control Room Habitability (Open) TAC:MF2409, Control Room Habitability (Open) |
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance
- Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement
Administration
- Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
Results
Other: ML13295A222, ML13323A183, ML13323A186, ML13323A189, ML13323A190, ML13323A191, ML13323B187, ML13323B188, ML13323B191, ML13323B194, ML13323B196, ML13323B198, ML13323B199, ML13323B200, ML13323B201, ML13323B202, ML13323B204, ML13323B207, ML13323B208, ML13323B209, ML13338A165, ML14015A312, ML14052A053, ML14072A076, ML14086A386, ML14086A387, ML14087A126, ML14149A089, ML14149A353, ML14149A354, ML14149A434, ML14149A435, ML14149A437, ML14178A481, ML14178A485, ML14202A045, ML14321A438, ML14321A677, ML14344A545, ML14344A546, ML14344A547, ML14349A790, ML15072A092, ML15091A440, ML15119A326, ML15175A024, ML15183A007, ML15183A009, ML15246A126, ML15246A128... further results
|
MONTHYEARML13323B1962012-06-12012 June 2012
Attachment 4: CHLE-008, Rev. 3, Debris Bed Preparation and Formation Test Results
Project stage: Other
ML13323B1942012-08-11011 August 2012
Attachment 3: CHLE-007, Rev. 3, Debris Bed Requirements and Preparation Procedures
Project stage: Other
NOC-AE-13003040, Attachment 1: CHLE-005, Rev. 1, Determination of the Initial Pool Chemistry for the Chle Test.2012-08-13013 August 2012
Attachment 1: CHLE-005, Rev. 1, Determination of the Initial Pool Chemistry for the Chle Test.
Project stage: Other
ML13323B1882012-08-13013 August 2012
Attachment 1: CHLE-005, Rev. 1, Determination of the Initial Pool Chemistry for the Chle Test
Project stage: Other
ML13323B1912012-08-14014 August 2012
Attachment 2: CHLE-006, Rev. 1, STP Material Calculations
Project stage: Other
ML13323B1982012-08-19019 August 2012
Attachment 5: CHLE-010, Rev. 2, Chle Tank Test Results for Blended and NEI Fiber Beds with Aluminum Addition
Project stage: Other
ML13323B1992013-01-0909 January 2013
Attachment 6: CHLE-012, Rev. 3, T1 Mbloca Test Report, Cover Through Figure 52
Project stage: Other
ML13323B2002013-01-0909 January 2013
Attachment 6: CHLE-012, Rev. 3, T1 Mbloca Test Report, Figure 53 Through End
Project stage: Other
ML13323B2022013-01-15015 January 2013
Attachment 8: CHLE-015, Rev. 3, Summary of Chemical Effects Testing in 2012 for STP GSI-191 License Submittal
Project stage: Other
ML13323B2012013-01-22022 January 2013
Attachment 7: CHLE-014, Rev. 2, T2 LBLOCA Test Report
Project stage: Other
ML13323B2042013-01-22022 January 2013
Attachment 9: CHLE-016, Rev. 2, Calculated Material Release to Estimate Chemical Effects
Project stage: Other
ML13043A0132013-01-31031 January 2013
Pilot Submittal and Request for Exemption for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-191
Project stage: Request
ML13214A0312013-08-13013 August 2013
Acceptance Review, Exemption Requests and License Amendment Request to Revise UFSAR for Resolution of Generic Safety Issue 191, Assessment of Debris Accumulation on PWR Sump Performance (TAC MF0613-MF0614; MF2400-09)
Project stage: Acceptance Review
ML13323B2072013-09-16016 September 2013
Attachment 10: CHLE-018, Rev. 2, Results of Bench Tests to Assess Corrosion of Aluminum in STP Containment Conditions
Project stage: Other
ML13323B2082013-09-23023 September 2013
Attachment 11: CHLE-019, Rev. 2, Test Results for Chemical Effect Tests Stimulating Corrosion and Precipitation (T3 & T4)
Project stage: Other
NOC-AE-13003039, Corrections to Information Provided in Revised STP Pilot Submittal and Requests for Exemptions and License Amendment for a Risk-Informed Approach to Resolving Generic Safety Issue (GSI)2013-10-0303 October 2013
Corrections to Information Provided in Revised STP Pilot Submittal and Requests for Exemptions and License Amendment for a Risk-Informed Approach to Resolving Generic Safety Issue (GSI)
Project stage: Other
ML13295A2222013-10-0303 October 2013
Corrections to Information Provided in Revised STP Pilot Submittal and Requests for Exemptions and License Amendment for a Risk-Informed Approach to Resolving Generic Safety Issue (GSI)
Project stage: Other
ML13323B2092013-10-0404 October 2013
Attachment 12: CHLE-020, Rev. 2, Test Results for a 10-day Chemical Effects Test Simulating LBLOCA Conditions (T5)
Project stage: Other
ML13323A1892013-10-22022 October 2013
Enclosure 4-2 - Risk-Informed Closure of GSI-191, Volume 2 Probabilistic Risk Analysis
Project stage: Other
ML13323B1872013-10-31031 October 2013
Submittal of GSI-191 Chemical Effects Test Reports
Project stage: Other
ML13323A1912013-11-0606 November 2013
Enclosure 4-3 Risk-Informed Closure of GSI-191, Volume 3, Engineering (Casa Grande) Analysis, Page 212 of 1-122
Project stage: Other
ML13323A1902013-11-0606 November 2013
Enclosure 4-3 Risk-Informed Closure of GSI-191, Volume 3, Engineering (Casa Grande) Analysis, Cover - Page 211 of 248
Project stage: Other
ML13323A1862013-11-12012 November 2013
Enclosure 4-1 - Risk-Informed Closure of GSI-191, Volume 1
Project stage: Other
ML13323A1852013-11-13013 November 2013
Enclosure 3 - License Amendment Request for STP Piloted Risk-Informed Approach to Closure for GSI-191
Project stage: Request
NOC-AE-13003043, Enclosure 5 - Response to NRC Supplemental Information Items2013-11-13013 November 2013
Enclosure 5 - Response to NRC Supplemental Information Items
Project stage: Supplement
ML13323A1922013-11-13013 November 2013
Enclosure 5 - Response to NRC Supplemental Information Items
Project stage: Supplement
ML13316B9052013-11-13013 November 2013
Albrz Testing Update for NRR Final
Project stage: Request
ML13323A1832013-11-13013 November 2013
To Revised STP Pilot Submittal and Requests for Exemptions and License Amendment for a Risk-Informed Approach to Resolving Generic Safety Issue (GSI)-191
Project stage: Other
ML13338A1652013-11-21021 November 2013
To Revised STP Pilot Submittal for a Risk-Informed Approach to Resolving Generic Safety Issue (GSI)-191 to Supersede and Replace the Revised Pilot Submittal
Project stage: Other
NOC-AE-13003054, Supplement 1 to Revised STP Pilot Submittal for a Risk-Informed Approach to Resolving Generic Safety Issue (GSI)-191 to Supersede and Replace the Revised Pilot Submittal2013-11-21021 November 2013
Supplement 1 to Revised STP Pilot Submittal for a Risk-Informed Approach to Resolving Generic Safety Issue (GSI)-191 to Supersede and Replace the Revised Pilot Submittal
Project stage: Supplement
ML13330B2222013-12-0505 December 2013
Notice 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 Project, Units 1 and 2 (TAC MF2400-MF24
Project stage: Meeting
NOC-AE-13003065, Response to STP-GSI-191-EMCB-RAI-12013-12-23023 December 2013
Response to STP-GSI-191-EMCB-RAI-1
Project stage: Other
ML14015A3112013-12-23023 December 2013
Response to NRC Request for Reference Document for STP Risk-Informed GSI-191 Application
Project stage: Request
05000498/LER-2013-003, Regarding Unanalyzed Condition - Direct Current Ammeter Circuits Without Overcurrent Protection2013-12-23023 December 2013
Regarding Unanalyzed Condition - Direct Current Ammeter Circuits Without Overcurrent Protection
Project stage: Request
ML14015A3122013-12-23023 December 2013
Response to STP-GSI-191-EMCB-RAI-1
Project stage: Other
NOC-AE-13003070, Response to NRC Request for Reference Document for STP Risk-Informed GSI-191 Application2013-12-23023 December 2013
Response to NRC Request for Reference Document for STP Risk-Informed GSI-191 Application
Project stage: Request
ML13357A2662013-12-24024 December 2013
1/8/14 - Notice of Meeting with STP Nuclear Operating Co. 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
Project stage: Meeting
ML14009A3072014-01-0909 January 2014
NRR E-mail Capture - Request for Additional Information - TACs MF2400 Through MF2409
Project stage: RAI
NOC-AE-13003057, Response to Request for Additional Information Re Use of RELAP5 in Analyses for Risk-Informed GSI-191 Licensing Application2014-01-0909 January 2014
Response to Request for Additional Information Re Use of RELAP5 in Analyses for Risk-Informed GSI-191 Licensing Application
Project stage: Response to RAI
ML14029A5332014-01-0909 January 2014
Response to Request for Additional Information Re Use of RELAP5 in Analyses for Risk-Informed GSI-191 Licensing Application
Project stage: Response to RAI
ML14015A0452014-01-14014 January 2014
NRR E-mail Capture - RAIs Regarding South Texas Projects Submittal for Risk-Informed Resolution of GS-191
Project stage: RAI
ML13358A0622014-01-14014 January 2014
Summary of 12/16/13 Meeting with STP Nuclear Operating Co. 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
Project stage: Meeting
ML14052A0542014-02-13013 February 2014
STP-Specific Casa Grande Inputs CASA01 JT4, CASA09 JT4, CASA22 JT4, CASA26 JT4, & CASA43 JT4
Project stage: Request
ML14052A0532014-02-13013 February 2014
Submittal of Casa Grande Code & Analyses for Risk-Informed GSI-191 Licensing Application
Project stage: Other
ML14149A4352014-02-14014 February 2014
ALION-REP-STP-8998-02, Rev. 0, STP Casa Grande Analysis and LAR Enclosure 4-3 RAI Response, Enclosure 1 to Attachment 1
Project stage: Other
ML14072A0842014-02-18018 February 2014
CHLE-012, T1 Mbloca Test Report, Revision 4
Project stage: Request
ML14072A0792014-02-22022 February 2014
CHLE-020, Test Results for 10-Day Chemical Effects Test Simulating LBLOCA Condition (T5), Revision 3
Project stage: Request
ML14072A0852014-02-22022 February 2014
CHLE-014, T2 LBLOCA Test Report, Revision 3
Project stage: Request
ML14072A0822014-02-23023 February 2014
CHLE-008, Debris Bed Preparation & Formation Test Results, Revision 4
Project stage: Request
ML14072A0832014-02-24024 February 2014
CHLE-010, Chle Tank Test Results for Blended and NEI Fiber Beds with Aluminum Addition, Revision 3
Project stage: Request
2013-11-21
[Table View] |
11/6/14 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 191 at South Texas Project, Units 1 and 2 (TAC MF2400-M| ML14323A576 |
| Person / Time |
|---|
| Site: |
South Texas  |
|---|
| Issue date: |
12/12/2014 |
|---|
| From: |
Balwant Singal
Plant Licensing Branch IV |
|---|
| To: |
South Texas |
|---|
| Singal B |
| References |
|---|
| GSI-191, TAC MF2400, TAC MF2401, TAC MF2402, TAC MF2403, TAC MF2404, TAC MF2405, TAC MF2406, TAC MF2407, TAC MF2408, TAC MF2409 |
| Download: ML14323A576 (5) |
|
Text
LICENSEE:
FACILITY:
SUBJECT:
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 December 12, 2014 STP Nuclear Operating Company South Texas Project, Units 1 and 2
SUMMARY
OF NOVEMBER 6, 2014, 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, "ASSESSMENT OF DEBRIS ACCUMULATION ON PWR SUMP PERFORMANCE" (TAC NOS. MF2400, MF2401, MF2402, MF2403, MF2404, MF2405, MF2405, MF2406, MF2407, MF2408, AND MF2409)
On November 6, 2014, a 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 October 27, 2014, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML14301A325. The licensee's handouts from the meeting are available in ADAMS at Accession No. ML14315A087. A list of meeting attendees is provided in the Enclosure to this meeting summary.
By letter dated June 19, 2013 (Agencywide Documents Access and Management System (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 (ADAMS*Accession Nos. ML13295A222, ML 13323),\\673, ML13323A128, ML13338A165, ML14015A312, ML14015A311, ML14029A533, ML14052A053, ML14072A076, ML14086A383, ML14087A126, ML14149A353, ML14149A354, ML14149A434, ML14178A481, and ML14202A045, respectively), STPNOC submitted exemption requests accompanied by a license amendment request (LAR) for a risk-informed approach to resolve the issue of potential impact of debris blockage on emergency recirculation during design-basis accidents Generic Safety Issue (GSI)-191, "Assessment of Debris Accumulation on PWR (Pressurized-Water Reactor] Sump Performance," at South Texas Project, Units 1 and 2 (STP).
The NRC staff issued a Request for Additional Information (RAI) by letter dated April 15, 2014 (ADAMS Accession No. ML 14087A07.5). The licensee provided its response to the RAI request by letters dated May 22, June 25, and July 15, 2014.
The purpose of the meeting was to discuss the proposed strainer head loss test plan and results
- of the on-site audit conducted on September 16 and 17, 2014, at the University of New Mexico in Albuquerque, New Mexico, and the agenda for the forthcoming December 2014 public meeting, in support of its LAR and exemptions.
Meeting Summary The following key topics, summarized in the licensee's presentation slides, were discussed by STPNOC during the meeting:
Review of the proposed STP strainer head loss test approach and its description for risk-informed resolution.
High-level plan for the test and analysis of the test results.
Assessment of the available test data and application of the test results.
Results of Discussions During the presentation, the licensee indicated that due to NRC staff concerns about NUREG/CR-6224, "Parametric Study of the Potential for BWR [Boiling Water Reactor]
ECCS [Emergency Core Cooling System] Strainer Blockage Due to LOCA [Loss-of-Coolant Accident] Generated Debris," October 1995 (ADAMS Accession No. ML083290498), head loss correlation, a new head loss correlation approach will be used in the future and the details of the revised approach will be discussed with the NRC staff in the forthcoming public meeting. The staff indicated its concern on the overall review schedule of the LAR, if the licensee decides to adopt the revised approach.
The NRC staff stated its concern about the uncertainties involved with the testing and the concept that *repeatability would have to be demonstrated to produce justification for correlation validity. The NRC staff also stated that inconsistent test results might result in increasing the scope of testing.
The NRC staff stated that similar tests performed in the past had significant variation in
- test results and stated that these tests may not provide adequate data to verify if the correlation is accurate and reasonable.
The NRC staff requested the licensee to explain the effect of compression on the debris bed in the future meeting. The licensee was also requested to explain how effect of compression on the debris bed is accounted for in the correlation.
The NRC staff asked for clarification as to what type of chemical precipitate surrogates would be used during the proposed testing. The licensee stated that surrogates prepared using the methodology prescribed in WCAP-16530-NP-A, "Evaluation of Post-Accident Chemical Effects in Containment Sump Fluids to Support GSI-191" (ADAMS Accession No. ML081150379), would b~ generated externally to the test loop and added after the debris bed is formed.
I o
The NRC staff stated its concern about the overall schedule for the LAR. The revised proposed approach represents a significant change to the existing submittal and is likely to impact the timing of licensee submittals and the overall review schedule. The NRC staff requested the licensee to explain in the future meeting how the schedule for the proposed testing supports the existing review schedule.
The licensee agreed to discuss the NRC staff concerns in more detail during the forthcoming public meeting in December 2014.
Due to the time constraint, the licensee agreed to review the draft audit report and provide comments after the meeting via e-mail. It was decided to discuss the agenda for the forthcoming public meeting in December 2014 during a separate call.
Action Items No action items were identified.
No Public Meeting Feedback Forms were received for this meeting.
Please direct any inquiries to me at 301-415-3016, or balwant.singal@nrc.gov.
Docket Nos. 50-498 and 50-499
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv Sincerely,
~t-8~.-
Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
LIST OF*ATTENDEES NOVEMBER 6, 2014, MEETING WITH STP NUCLEAR OPERATING COMPANY REGARDING RISK-INFORMED APPROACH TO RESOLUTION OF GSI-191 NAME Balwant K. Singal John Stang Steve Smith Victor Cusumano Andrea Russell*
Matthew Yoder*
Ashley Guzzetta Steve Laur*
Steven M. Unikewicz*
Tim Sande*
Phil Grissom*
Paul Leonard*
Steve Blossom*
Bruce Letellier**
Edward Blandford**
Ernie Kee*
Janet Leavitt**
Wayne Harrison**
Wes Scl:lulz*
Linda Dyer*
Seyed Reihani**
Daniel LaBrier
- Attended via phone SOUTH TEXAS PROJECT, UNITS 1 AND 2 DOCKET NOS. 50-498 AND 50-499 TITLE ORGANIZATION Senior Project Manager U.S. Nuclear Regulatory Commission (NRC)
Senior Project Manager NRC Reactor Systems Engineer NRC Branch Chief NRC Project Manager NRC Sr. Chemical Engineer NRC Engineer NRC Senior Risk Analyst NRC Senior Principal Engineer Alion Science and Technology Enercon Southern Nuclear Company STPNOC Project Manager STP Nuclear Operating Company (STPNOC)
_ Alion Science and Technology (Aiion)
Assistant Professor University of New Mexico (UNM)
Technical Team Lead STPNOC Director Lab Operations Ali on Licensing Lead STPNOC Design Engineering STPNOC STPNOC University of Illinois UNM
- Attended via phone in support of STPNOC Enclosure
ML14323A576
- via email OFFICE NRR/DORLILPL4-1/PM NRR/DORLILPL4-1/LA NRR/DSS/SSI.B/BC NRR/DE/ESGB/BC NAME BSingal JBurkhardt*
VCusumano PKiein {A)
DATE 11/20/14 11/20/14 11/24/14 12/8/14 OFFICE NRR/DRA/APLAIBC NRR/DORLILPL4-1/BC NRR/DORL/LPL4-1/PM NAME HHamzehee EOesterle (A}
BSingal DATE 12/2/_14-12/12/14 12/12/14