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| | number = ML13098A396 | | | number = ML13098A396 |
| | issue date = 04/08/2013 | | | issue date = 04/08/2013 |
| | title = South Texas Project, Units 1 and 2 - Email Risk Informed GSI-191 Evaluation (TAC Nos. MF0613 and MF0614) | | | title = Email Risk Informed GSI-191 Evaluation |
| | author name = Chappell C C | | | author name = Chappell C |
| | author affiliation = South Texas Project Nuclear Operating Co | | | author affiliation = South Texas Project Nuclear Operating Co |
| | addressee name = Singal B K | | | addressee name = Singal B |
| | addressee affiliation = NRC/NRR/DORL/LPLIV | | | addressee affiliation = NRC/NRR/DORL/LPLIV |
| | docket = 05000498, 05000499 | | | docket = 05000498, 05000499 |
| | license number = NPF-076, NPF-080 | | | license number = NPF-076, NPF-080 |
| | contact person = Singal B K | | | contact person = Singal B |
| | case reference number = TAC MF0613, TAC MF0614 | | | case reference number = TAC MF0613, TAC MF0614 |
| | package number = ML13098A368 | | | package number = ML13098A368 |
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| {{#Wiki_filter:From:Chappell, Coley To:Singal, Balwant Cc:Paul, Jamie | | {{#Wiki_filter:From: Chappell, Coley To: Singal, Balwant Cc: Paul, Jamie |
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| ==Subject:== | | ==Subject:== |
| STP 1&2 CHLE 017 test protocol discussion Date:Monday, April 08, 2013 11:54:50 AM Attachments:Risk-Informed Chemical Effects Modules (Rev 0).pdfCHLE 017 - Tests to Assess Chemical Precipitate Formation Rev 5.pdf Balwant, STP requests a telecon with NRC staff to discuss a revision to the Corrosion/Head Loss Experiment(CHLE) Program based on the attached document no. CHLE-017, testing protocol to assess chemical precipitate formation. | | STP 1&2 CHLE 017 test protocol discussion Date: Monday, April 08, 2013 11:54:50 AM Attachments: Risk-Informed Chemical Effects Modules (Rev 0).pdf CHLE 017 - Tests to Assess Chemical Precipitate Formation Rev 5.pdf |
| Also attached is a discussion to provide background for how this testing fits intothe overall chemical effects testing scheme. | | : Balwant, STP requests a telecon with NRC staff to discuss a revision to the Corrosion/Head Loss Experiment (CHLE) Program based on the attached document no. CHLE-017, testing protocol to assess chemical precipitate formation. Also attached is a discussion to provide background for how this testing fits into the overall chemical effects testing scheme. |
| The CHLE-017 revision adds a set of confirmatory experiments that use both NEI-processed and blender-processed debris beds. | | The CHLE-017 revision adds a set of confirmatory experiments that use both NEI-processed and blender-processed debris beds. This is intended to address NRC staff concerns with the use of NEI-processed beds rather than blender-processed beds, which have exhibited a much greater sensitivity (and also much greater variability) to the presence of particulates. The test results are expected to confirm STP's previous conclusions based use of the NEI-processed beds, and also improve understanding of the margin provided by STP's use of a conservative factor to account for uncertainties due to (1) use of the NUREG-6224 correlation and (2) chemical effects. STP seeks feedback regarding the adequacy of the revised testing plan to address the staff's concerns. |
| This is intended to address NRC staff concerns with the use of NEI-processed beds rather than blender-processed beds, which have exhibited a much greater sensitivity (and also much greater variability) to the presence of particulates. | | If there are any questions, please contact me or Jamie Paul. |
| The test results are expected toconfirm STP's previous conclusions based use of the NEI-processed beds, and also improveunderstanding of the margin provided by STP's use of a conservative factor to account for uncertainties due to (1) use of the NUREG-6224 correlation and (2) chemical effects. | | : Regards, Coley Chappell STPNOC Licensing 361-972-4745}} |
| STP seeks feedback regardingthe adequacy of the revised testing plan to address the staff's concerns.If there are any questions, please contact me or Jamie Paul. | |
| Regards, Coley ChappellSTPNOC Licensing361-972-4745}} | |
Letter Sequence Other |
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MONTHYEARNOC-AE-13002954, Pilot Submittal and Request for Exemption for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-1912013-01-31031 January 2013
Pilot Submittal and Request for Exemption for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-191
Project stage: Request
ML13066A5192013-04-0101 April 2013
Supplemental Information Needed for Acceptance of Requested Licensing Action Request for Exemption for a Risk-Informed Approach to Resolve Generic Safety Issue 191
Project stage: Acceptance Review
ML13098A3962013-04-0808 April 2013
Email Risk Informed GSI-191 Evaluation
Project stage: Other
ML13098A4312013-04-0808 April 2013
Development of Chemical Effects Modules for Risk-Informed GSI-191 Resolution
Project stage: Other
ML13098A5112013-04-0808 April 2013
Corrosion/Head Loss Experiment Program
Project stage: Other
ML13101A3142013-04-12012 April 2013
Notice of Meeting Via Conference Call with STP Nuclear Operating Company to Discuss Risk-Informed Approach to Resolve Generic Safety Issue 191 for South Texas, Units 1 and 2
Project stage: Meeting
NOC-AE-13002994, Schedule for Supplement to STP Pilot Submittal and Request for Exemption for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-1912013-04-17017 April 2013
Schedule for Supplement to STP Pilot Submittal and Request for Exemption for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-191
Project stage: Supplement
ML13112A2522013-04-25025 April 2013
Approval of Extension to Submit Supplemental Information for Acceptance of Licensing Action; Request for Exemption for a Risk-Informed Approach to Resolve Generic Safety Issue 191
Project stage: Acceptance Review
ML13119A0802013-04-30030 April 2013
Notice Meeting Via Conference Call with STP Nuclear Operating Company to Discuss Risk-Informed Approach to Resolve Generic Safety Issue 191 for South Texas, Units 1 and 2
Project stage: Meeting
ML13140A2562013-05-20020 May 2013
Licensee Slides for 5/23/13 Meeting - STP Pilot Submittal for Risk Informed Approach to Resolving GSI-191
Project stage: Meeting
ML13140A2692013-05-20020 May 2013
NRC Slides for 5/23/13 Meeting Regarding Risk - Informed GSI-191 Pilot Application Initial Review Insights
Project stage: Meeting
ML13150A2162013-05-23023 May 2013
Licensee Slides for 5/23/13 Public Meeting Regarding GSI-191
Project stage: Meeting
ML13161A1632013-06-14014 June 2013
5/23/13 Summary of Public Meeting Via Conference Call with STP Nuclear Operating Company to Discuss Risk-Informed Approach to Resolve Generic Safety Issue 191 for South Texas, Units 1 and 2
Project stage: Meeting
ML13175A2112013-06-19019 June 2013
Project, Units 1 and 2, 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
ML13168A1622013-06-26026 June 2013
Summary of Meeting Via Conference Call with STP Nuclear Operating Company to Discuss Risk-Informed Approach to Resolve Generic Safety Issue 191 for South Texas, Units 1 and 2
Project stage: Meeting
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
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
ML13323A1892013-10-22022 October 2013
Enclosure 4-2 - Risk-Informed Closure of GSI-191, Volume 2 Probabilistic Risk Analysis
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
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
ML13323A1832013-11-13013 November 2013
Project Units 1 and 2 - Supplement 1 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: Supplement
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
ML13330B7152013-11-26026 November 2013
RAI from the Mechanical & Civil Engineering Branch Re. Revise STP Submittal and Request for Exemptions and License Amendment for a Risk-information Approach to Resolving Generic Safety Issues (GSI)-191
Project stage: RAI
2013-04-12
[Table View] |
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Category:E-Mail
MONTHYEARML24086A4212024-06-26026 June 2024
Email to Chris Warren Decision on the Exemption Request for South Texas Project
ML24086A4252024-06-24024 June 2024
Email to Chris Warren Availability of Environmental Assessment for the South Texas Project Exemption
ML24101A0082024-04-10010 April 2024
NRR E-mail Capture - South Texas Project - Relief Request - 50.55a(z)(2) - Rvh Penetration 75
ML24052A0152024-02-20020 February 2024
NRR E-mail Capture - South Texas Project - Request for Additional Information - Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications (L-2023-LLE-0046)
ML24052A0112024-02-16016 February 2024
NRR E-mail Capture - South Texas Project - Draft Request for Additional Information - Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications (L-2023-LLE-0046)
ML23334A0062023-11-29029 November 2023
NRR E-mail Capture - South Texas Project - Request for Additional Information - Proposed Alternative to ASME BPV Code Requirements
ML23319A4442023-11-15015 November 2023
NRR E-mail Capture - South Texas Project - Draft Request for Additional Information - Proposed Alternative to ASME BPV Code Requirements
ML23278A1532023-10-0505 October 2023
NRR E-mail Capture - South Texas Project Request for Additional Information - Request for Indirect Transfer of Licenses and Conforming Amendments (L-2023-LLM-0004)
ML23264A0972023-09-21021 September 2023
NRR E-mail Capture - South Texas Project - Request for Additional Information - License Amendment Request to Revise the Alternate Source Term Dose Calculation (L-2023-LLA-0047)
ML23255A2862023-09-12012 September 2023
NRR E-mail Capture - South Texas Project Draft Request for Additional Information License Amendment Request to Revise the Alternate Source Term Dose Calculation (L-2023-LLA-0047)
ML23191A0102023-07-0707 July 2023
NRR E-mail Capture - South Texas Project - Acceptance of Request for Indirect Transfer of Licenses and Conforming Amendments (L-2023-LLM-0004)
ML23145A1872023-05-24024 May 2023
July 2023 Emergency Preparedness Program Inspection - Request for Information
ML23124A3272023-05-0404 May 2023
NRR E-mail Capture - South Texas Project - Acceptance of License Amendment Request to Revise the Alternate Source Term Dose Calculation (L-2023-LLA-0047)
ML23115A0702023-04-24024 April 2023
NRR E-mail Capture - South Texas Project Units 1 and 2 - Audit Plan - Proposed Alternative to ASME Code, Section XI Requirements for Containment Building Inspections
ML23096A1592023-04-0606 April 2023
NRR E-mail Capture - South Texas Project - Acceptance of Requested Licensing Action - Proposed Alternative to the Requirements of the ASME Code
ML23065A0912023-03-0303 March 2023
NRR E-mail Capture - South Texas Project - Draft Supplemental Information Request - Proposed Alternative to the Requirements of the ASME Code
ML23003A8082022-11-28028 November 2022
NRR E-mail Capture - Texas Commission on Environmental Quality (TCEQ) Review/Comment Regarding the Draft Environmental Assessment for the South Texas Project Alternate Disposal Request (L-2021-LLL-0022))
ML22249A0692022-09-0606 September 2022
NRR E-mail Capture - South Texas Project - Acceptance of License Amendment Request Regarding Adoption of TSTF-554, Revise Reactor Coolant Leakage Requirements (L-2002-LLA-0113)
ML22206A0142022-07-20020 July 2022
NRR E-mail Capture - South Texas Project - Request for Additional Information - 10 CFR 20.2002 Alternate Disposal Request
ML22194A0502022-07-0707 July 2022
NRR E-mail Capture - South Texas Project - Updated Draft Request for Additional Information - 10 CFR 20.2002 Alternate Disposal Request
ML22194A0492022-06-0808 June 2022
NRR E-mail Capture - South Texas Project - Draft Request for Additional Information - 10 CFR 20.2002 Alternate Disposal Request
ML22123A3272022-05-0303 May 2022
STP EP Exercise Inspection July 2022 RFI
ML22115A2632022-04-19019 April 2022
Email Response to David Lochbaum Regarding Interim Configuration of Holtec HI-STORE FW Spent Fuel Multipurpose Canister at South Texas Project Energy Generating Station
ML22105A5642022-04-0505 April 2022
Request for Information for Problem Identification and Resolution at STP Nuclear Operating Company
ML21344A0072021-12-0909 December 2021
NRR E-mail Capture - South Texas Project - Acceptance of Requested Licensing Action - Alternative Disposal Request
ML21305B8022021-11-0101 November 2021
NRR E-mail Capture - South Texas Project - Acceptance of Requested Licensing Action - Inservice Inspection Impracticality
ML21257A2262021-09-14014 September 2021
NRR E-mail Capture - South Texas Project - Acceptance of License Amendment Request Regarding Adoption of TSTF-577, Revised Frequencies for Steam Generator Tube Inspections (L-2021-LLA-0151)
ML21160A1522021-06-0909 June 2021
Request for Information NRC Inspection 2021-003 Public Radiation Safety
ML21133A2372021-05-0505 May 2021
Request for Additional Information: STP EP Exercise Inspection - July 2021
ML21117A3242021-04-22022 April 2021
NRR E-mail Capture - (External_Sender) STP Questions About Eplan Amendment SE
ML21103A0072021-04-12012 April 2021
NRR E-mail Capture - South Texas Project - Acceptance of License Amendment Request to Add a Note to TS 3.6.3 and to Remove the TS Index (L-2021-LLA-0041)
ML21058A0002021-02-26026 February 2021
NRR E-mail Capture - South Texas Units 1 and 2 - License Amendment Request to Revise Moderator Temperature Coefficient SRs - Audit Plan and Setup of Online Document Access (L-2021-LLA-0004)
ML21049A2652021-02-16016 February 2021
NRR E-mail Capture - South Texas Project - Acceptance of License Amendment Request to Revise the Moderator Temperature Coefficient Surveillance Requirements (L-2021-LLA-0004)
ML21039A8902021-02-0808 February 2021
NRR E-mail Capture - South Texas Project - Request for Additional Information - 1RE22 Inspection Summary Report for Steam Generator Tubing
ML21029A3312021-01-29029 January 2021
NRR E-mail Capture - South Texas Project - Draft Request for Additional Information - 1RE22 Inspection Summary Report for Steam Generator Tubing
ML20244A0222020-08-28028 August 2020
NRR E-mail Capture - South Texas Project - Acceptance of License Amendment Request to Adopt TSTF-374, Revision to TS 5.5.13 and Associated TS Bases for Diesel Fuel Oil. (L-2020-LLA-0172)
ML20135H1982020-05-14014 May 2020
NRR E-mail Capture - South Texas Unit 1 - License Amendment Request to Revise Safety Injection System Accumulator Pressure - Audit Plan and Setup of Online Reference Portal
ML20125A3312020-05-0404 May 2020
NRR E-mail Capture - South Texas Project - Acceptance of License Amendment Request to Revise the Emergency Plan (L-2020-LLA-0057)
ML20111A0052020-04-17017 April 2020
NRR E-mail Capture - South Texas Project - Request for Additional Information - Proposed Alternative to ASME OM Code 2012 Edition - Relief Request PRR-01
ML20050E1192020-02-19019 February 2020
NRR E-mail Capture - South Texas Project - Acceptance of Requested Licensing Actions - Proposed Alternatives to ASME OM Code Requirements (EPID: L 2020-LLR-0007 to L-2020-LLR-0010)
ML19344A0092019-12-0909 December 2019
NRR E-mail Capture - South Texas Project - Acceptance of Requested Licensing Action - Proposed Alternative to ASME Code Requirements for the Repair of Essential Cooling Water System Class 3 Buried Piping
ML19309F1412019-11-0404 November 2019
Supplemental Information Request - Proposed Alternative to ASME Code Requirements for the Repair of Essential Cooling Water System Class 3 Buried Piping (EPID L 2019-LLR-0096) (Draft)
ML19291A0332019-10-17017 October 2019
NRR E-mail Capture - Acceptance Review Results: STP License Amendment Request Regarding Request to Delete E Bar Definition
ML19165A1032019-06-14014 June 2019
NRR E-mail Capture - Draft RAI for STP TS 3.8.1.1 Sbdg SR Change
ML19162A1162019-05-22022 May 2019
NRR E-mail Capture - Acceptance Review Results: STP License Amendment Request Regarding TSTF-529
ML19095A6562019-04-0404 April 2019
NRR E-mail Capture - (External_Sender) Handout for 4/10/19 Meeting to Discuss a Proposed Request for South Texas Project, Units 1 and 2, Regarding Repair of Piping Using Carbon Fiber Repair Methods
ML19081A1512019-03-21021 March 2019
NRR E-mail Capture - Draft Round 2 RAI - Sbdg Voltage and Frequency LAR (L-2018-LLA-0078)
ML19078A3792019-03-19019 March 2019
NRR E-mail Capture - Acceptance Review Results: STP RR-ENG-3-23 (L-2018-LLR-0021)
ML18292A7272018-10-19019 October 2018
NRR E-mail Capture - Acceptance Review Results: TSTF-522 (L-2018-LLA-0271)
ML18283B9522018-10-10010 October 2018
NRR E-mail Capture - Final RAI - South Texas Standby DG TS Change (L-2018-LLA-0078)
2024-06-26
[Table view] |
Text
From: Chappell, Coley To: Singal, Balwant Cc: Paul, Jamie
Subject:
STP 1&2 CHLE 017 test protocol discussion Date: Monday, April 08, 2013 11:54:50 AM Attachments: Risk-Informed Chemical Effects Modules (Rev 0).pdf CHLE 017 - Tests to Assess Chemical Precipitate Formation Rev 5.pdf
- Balwant, STP requests a telecon with NRC staff to discuss a revision to the Corrosion/Head Loss Experiment (CHLE) Program based on the attached document no. CHLE-017, testing protocol to assess chemical precipitate formation. Also attached is a discussion to provide background for how this testing fits into the overall chemical effects testing scheme.
The CHLE-017 revision adds a set of confirmatory experiments that use both NEI-processed and blender-processed debris beds. This is intended to address NRC staff concerns with the use of NEI-processed beds rather than blender-processed beds, which have exhibited a much greater sensitivity (and also much greater variability) to the presence of particulates. The test results are expected to confirm STP's previous conclusions based use of the NEI-processed beds, and also improve understanding of the margin provided by STP's use of a conservative factor to account for uncertainties due to (1) use of the NUREG-6224 correlation and (2) chemical effects. STP seeks feedback regarding the adequacy of the revised testing plan to address the staff's concerns.
If there are any questions, please contact me or Jamie Paul.
- Regards, Coley Chappell STPNOC Licensing 361-972-4745
