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| ==Subject:== | | ==Subject:== |
| VC Summer Clarification Question on Fussell-Vesely Values | | VC Summer Clarification Question on Fussell-Vesely Values |
| : Hank, As part of the ongoing audit review of the VC Summer Seismic PRA submittal (ADAMS Accession No. | | : Hank, As part of the ongoing audit review of the VC Summer Seismic PRA submittal (ADAMS Accession No. ML18271A109), the NRC staff continues to work on a technical checklist similar to that in Enclosure 1 of our letter dated July 10, 2018 (ADAMS Accession No. ML18115A138). To proceed with our review, the following information is requested for clarification purposes: |
| ML18271A109), the NRC staff continues to work on a technical checklist similar to that in Enclosure 1 of our letter dated July 10, 2018 (ADAMS Accession No. ML18115A138). To proceed with our review, the following information is requested for clarification purposes: | |
| * Please provide information from the SPRA quantification notebook, specifically; o a list of structures, systems and components (SSCs) modeled and associated fragility and Fussell-Vesely values, and o a list of human failure events and their associated Fussell-Vesely values. | | * Please provide information from the SPRA quantification notebook, specifically; o a list of structures, systems and components (SSCs) modeled and associated fragility and Fussell-Vesely values, and o a list of human failure events and their associated Fussell-Vesely values. |
| This information is needed to review the broader list of seismically-failed SSCs in addition to the 5 SSCs provided in Table 5.4-3 to understand the extent of the event beyond the 5 SSCs in Table 5.4-3. | | This information is needed to review the broader list of seismically-failed SSCs in addition to the 5 SSCs provided in Table 5.4-3 to understand the extent of the event beyond the 5 SSCs in Table 5.4-3. |
Latest revision as of 13:30, 2 February 2020
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Category:E-Mail
MONTHYEARML24232A1812024-08-19019 August 2024
Summer_2024-04_RP Information Request
ML24190A0412024-07-0505 July 2024
Notification of Inspection and Request for Information
ML24170A3892024-06-18018 June 2024
NRR E-mail Capture - Acceptance Review for VC Summer Containment Tendon Relief Request (L-2024-LLR-0035)
ML24165A1912024-06-13013 June 2024
003 Radiation Safety Baseline Inspection Information Request
ML24156A0022024-06-0303 June 2024
VC Summer SLRA - Requests for Additional Information - Set 2 - Email from Marieliz Johnson to Eric Carr
ML24129A0722024-05-0808 May 2024
VC Summer SLRA - Requests for Confirmation of Information - Set 1 - Email from Marieliz Johnson to Eric Carr
ML24075A1872024-03-15015 March 2024
NRR E-mail Capture - Draft RAIs for Alternative Request RR-5-V2 (L-2023-LLR-0068)
ML24067A0672024-03-0707 March 2024
NRR E-mail Capture - Draft RAIs for Inverter CT License Amendment Request TS 3.8.3.1, Onsite Power Distribution - Operating, (L-2023-LLA-0157)
ML24061A1892024-03-0101 March 2024
NRR E-mail Capture - Request for Additional Information (RAI) for VC Summer Inverter License Amendment Request (LAR) to Revise the Emergency Plan
ML24052A0102024-02-16016 February 2024
NRR E-mail Capture - Draft RAIs for Emergency Plan (EP) Changes License Amendment Request (LAR) (L-2023-LLA-0083)
ML24026A2802024-01-25025 January 2024
Acceptance Review for Virgil C. Summer Relief Requests RR-5-V1, RR-5-V2, and RR-5-V3 (EPIDs L-2023-LLR-0067, L-2023-LLR-0068, and L-2023-LLR-0069) (Email)
ML23270B8712023-09-27027 September 2023
NRR E-mail Capture - Draft RAIs for License Amendment Request (LAR) to Revise the Virgil C. Summer Nuclear Station (VCSNS) Unit 1 Emergency Plan (L-2023-LLA-0083)
ML23193A9552023-07-12012 July 2023
NRR E-mail Capture - Acceptance Review for VC Summer and Surry Relief Request (L-2023-LLR-0029)
ML23186A1392023-07-0505 July 2023
NRR E-mail Capture - Acceptance Review for VC Summer Emergency Plan (EP) License Amendment Request (LAR) (L-2023-LLA-0083)
ML23131A1492023-05-10010 May 2023
2023 V.C. Summer Commercial Grade Dedication Inspection Information Request
ML23044A3392023-02-13013 February 2023
NRR E-mail Capture - Acceptance Review for Change to Reactor Vessel Surveillance Capsule Schedule (L-2023-LLL-0002)
ML23027A0122023-01-26026 January 2023
002 Radiation Safety Baseline Inspection Information Request
ML23026A0152023-01-23023 January 2023
NRR E-mail Capture - Feb 14, 2023 Public Meeting with the Dominion Energy to Discuss a Planned Emergency Preparedness Submittal to Relocate the Emergency Operations Facility for the VC Summer Power Station - Dominion Slides
ML22263A0502022-09-19019 September 2022
NRR E-mail Capture - Draft Request for Additional Information for Proposed Alternative Request RR-4-26 Extension of Steam Generator Primary Inlet Nozzle Dissimilar Metal Weld Inspection Interval V.C. Summer Unit 1
ML22194A9422022-07-13013 July 2022
NRC 50.59 Inspection (IP 71111.17T) Information Request
ML22174A3552022-06-23023 June 2022
NRR E-mail Capture - Acceptance Review for Dominion Fleet LAR to Implement TSTF-554 (L-2022-LLA-0078)
ML22173A0292022-06-17017 June 2022
NRR E-mail Capture - Acceptance Review for Summer to Defer Weld Examinations (L-2022-LLR-0052)
ML22139A2302022-05-19019 May 2022
NRR E-mail Capture - Acceptance Review for Summer TS 4.6.2.1.d LAR (L-2022-LLR-0060)
ML22139A2322022-05-19019 May 2022
NRR E-mail Capture - Acceptance Review for Summer TSTF-491 LAR (L-2022-LLR-0059)
ML22084A4052022-03-25025 March 2022
NRR E-mail Capture - Acceptance Review for Summer Dissimilar Metal Weld Inspection Interval (L-2022-LLR-0033)
ML22018A0272022-01-18018 January 2022
2022 All RFI Responses - Exercise and Program Inspections - Revl
ML21333A1892021-11-29029 November 2021
NRR E-mail Capture - Draft RAI for Summer LAR Relocate Surveillance Frequencies to Licensee Control - RITSTF Initiative 5b, (TSTF-425)
ML21253A1352021-09-0808 September 2021
Document Request for VC Summer Nuclear Station - Radiation Protection Inspection - Inspection Report 2021-04
ML21197A0432021-07-15015 July 2021
VCS ISI 2021004 RFI - Combined
ML21187A1242021-06-28028 June 2021
10CFR Part 21 Update - Deviation Identified in the Bolting Utilized to Maintain Seismic Qualification
ML21173A1782021-06-22022 June 2021
NRR E-mail Capture - Acceptance Review - Summer LAR Unit Staff Qualification Relocation TS to Quality Assurance Program Description (QAPD)
ML21145A0222021-05-24024 May 2021
003 Radiation Safety Baseline Inspection Information Request
ML21131A0402021-05-11011 May 2021
NRR E-mail Capture - V.C. Summer, Unit 1 - Final RAI for the Spring 2020 RFO Sgtir Review
ML21125A1942021-05-0505 May 2021
NRR E-mail Capture - Virgil C. Summer Nuclear Station, Unit 1 - Acceptance Review (L-2021-LLA-0064)
ML21020A0562021-01-20020 January 2021
Email Capture Upcoming V.C. Summer POV Inspection (IP71111.21N.02) Information Request
ML20342A1822020-12-0707 December 2020
NRR E-mail Capture - Final RAI for Summer LAR - TS 3.6.4
ML20342A3822020-12-0707 December 2020
NRR E-mail Capture - Final RAIs for Summer Fs LOCA LAR
ML20321A2112020-11-16016 November 2020
NRR E-mail Capture - Summer, Unit 1 - Final RAIs for the SG Tube Inspection Report Review
ML20316A0122020-11-0404 November 2020
NRR E-mail Capture - V.C. Summer Nuclear Station, Unit 1 - Acceptance Review (L-2020-LLR-0141)
ML20302A2032020-10-28028 October 2020
NRR E-mail Capture - V.C. Summer Nuclear Station, Unit 1 - Acceptance Review (L-2020-LLR-0141)
ML20260H4262020-09-0303 September 2020
NRR E-mail Capture - Acceptance Review for Fleet Relief Request for Code Case N-885
ML20178A5892020-06-26026 June 2020
NRR E-mail Capture - Virgil C. Summer Nuclear Station, Unit 1 - Acceptance Review of the Fsloca LAR (L-2020-LLA-0124)
ML20178A5912020-06-23023 June 2020
NRR E-mail Capture - VC Summer Unit Alternate Request RR-4-21
ML20178A5932020-06-23023 June 2020
NRR E-mail Capture - VC Summer Unit Alternate Request RR-4-19
ML20149K4262020-05-21021 May 2020
NRR E-mail Capture - V. C. Summer, Unit 1 - Acceptance of License Amendment Request (LAR-20-142) Related to TS 3.6.4, Containment Isolation Valves (L-2020-LLA-0092)
ML19218A3742019-08-0606 August 2019
NRR E-mail Capture - Virgil C. Summer, Unit 1 -Acceptance of Relief Request (RR-4-20), Use of Encoded Phased Array Ultrasonic Examination Techniques in Lieu of Radiography
ML19214A2732019-08-0202 August 2019
NRR E-mail Capture - Virgil C. Summer, Unit 1 - Acceptance of License Amendment Request to Change Company Name
ML19211D5102019-07-30030 July 2019
NRR E-mail Capture - Virgil C. Summer Nuclear Station, Unit No. 1 - Request for Additional Information LAR-16-01490 NFPA-805 (Supplement to PRA RAI 03)
ML19179A1262019-06-27027 June 2019
NRR E-mail Capture - Virgil C. Summer Nuclear Station, Unit No. 1 - Request for Additional Information LAR-16-01490 NFPA-805 Program Revisions
ML19155A2752019-06-0404 June 2019
VC Summer 2019003 Rad Safety Inspection Document Request
2024-08-19
[Table view] |
Text
NRR-DMPSPEm Resource From: Valentin-Olmeda, Milton Sent: Wednesday, January 9, 2019 1:01 PM To: KIRKLAND, WILLIAM HANK Cc: STEWART, TRACEY (SCE&G - 8); Sebrosky, Joseph
Subject:
VC Summer Clarification Question on Fussell-Vesely Values
- Hank, As part of the ongoing audit review of the VC Summer Seismic PRA submittal (ADAMS Accession No. ML18271A109), the NRC staff continues to work on a technical checklist similar to that in Enclosure 1 of our letter dated July 10, 2018 (ADAMS Accession No. ML18115A138). To proceed with our review, the following information is requested for clarification purposes:
- Please provide information from the SPRA quantification notebook, specifically; o a list of structures, systems and components (SSCs) modeled and associated fragility and Fussell-Vesely values, and o a list of human failure events and their associated Fussell-Vesely values.
This information is needed to review the broader list of seismically-failed SSCs in addition to the 5 SSCs provided in Table 5.4-3 to understand the extent of the event beyond the 5 SSCs in Table 5.4-3.
- The staff noticed that Fussell-Vesely values were not specifically calculated, but were approximated using a method described on Page 51 of the VC Summer SPRA submittal. Please further describe this approximation method used in your analysis. Also, please explain the extent that separation of variables was used.
These items are needed to complete Topics 12 and 16 of the technical checklist used to assess the VC Summer SPRA submittal.
Your prompt response will be greatly appreciated.
If any questions, please contact me or Joe Sebrosky (301-415-1132).
Respectfully, Milton Valentín, PM US NRC Division of Licensing Projects Beyond Design Basis Management (Fukushima)
Office of Nuclear Reactor Regulation Milton.Valentin@nrc.gov 301-415-2864 1
Hearing Identifier: NRR_DMPS Email Number: 743 Mail Envelope Properties (Milton.Valentin-Olmeda@nrc.gov20190109130100)
Subject:
VC Summer Clarification Question on Fussell-Vesely Values Sent Date: 1/9/2019 1:01:04 PM Received Date: 1/9/2019 1:01:00 PM From: Valentin-Olmeda, Milton Created By: Milton.Valentin-Olmeda@nrc.gov Recipients:
"STEWART, TRACEY (SCE&G - 8)" <TRACEY.STEWART@scana.com>
Tracking Status: None "Sebrosky, Joseph" <Joseph.Sebrosky@nrc.gov>
Tracking Status: None "KIRKLAND, WILLIAM HANK " <WILLIAM.KIRKLAND@scana.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 1746 1/9/2019 1:01:00 PM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
