Letter Sequence Request |
|---|
CAC:MF2400, Control Room Habitability (Approved, Closed) CAC:MF2402, 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
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
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
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
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
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
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
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
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
NRC-2016-0092, South Texas Project, Units 1 and 2 - FRN: Exemption from the Requirements of 10 CFR 50.46 and 10 CFR Part 50, Appendix a, General Design Criteria 35, 38, 41 (CAC Nos. MF2402-MF2409)2017-07-11011 July 2017
South Texas Project, Units 1 and 2 - FRN: Exemption from the Requirements of 10 CFR 50.46 and 10 CFR Part 50, Appendix a, General Design Criteria 35, 38, 41 (CAC Nos. MF2402-MF2409)
Project stage: Approval
ML17037C8712017-07-11011 July 2017
Letter, Exemption from the Requirements of 10 CFR Part 50, Section 50.46 (CAC Nos. MF2402-MF2409)
Project stage: Approval
ML17037C8762017-07-11011 July 2017
FRN: Exemption from the Requirements of 10 CFR 50.46 and 10 CFR Part 50, Appendix a, General Design Criteria 35, 38, 41 (CAC Nos. MF2402-MF2409)
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] |
|
|---|
Category:E-Mail
MONTHYEARML23334A0062023-11-29029 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)
ML18263A1432018-09-12012 September 2018
NRR E-mail Capture - Final RAI for South Texas Project RR-ENG-E-16 (L-2018-LLR-0097)
ML18190A5002018-07-0909 July 2018
NRR E-mail Capture - Acceptance Review Results - South Texas Unit 1 Relief Request - Relief Request RR-ENG-3-16 (L-2018-LLR-0097)
ML18121A0322018-04-30030 April 2018
NRR E-mail Capture - Acceptance Review Results - South Texas Project Technical Specification Change for Standby Diesel Generator Surveillance Requirements Acceptance Criteria (L-2018-LLA-0078)
ML18060A3062018-03-0101 March 2018
NRR E-mail Capture - Acceptance Review Results for South Texas Project Relief Request to Extend the Timeframe for Volumetric Exams of B-A and B-D Reactor Vessel Welds (L-2018-LLR-0010)
ML18016A1542018-01-16016 January 2018
NRR E-mail Capture - Acceptance Review Results - South Texas Project Relief Request to Use Ultrasonic Examination Techniques in Lieu of Radiography (L-2017-LLR-0154)
2023-09-21
[Table view] |
Text
NRR-PMDAPEm Resource From: Richards, Drew <amrichards@STPEGS.COM>
Sent: Tuesday, August 23, 2016 3:07 PM To: Regner, Lisa Cc: Harrison Albon
Subject:
[External_Sender] FW: PRA model information for NRC Attachments: STP_REV81 CDF contributions.pdf; STP_REV81 LERF contributions.pdf Attached is the information regarding Level 1 and Level 2 Initiating Event contributions for the current PRA model (STP_REV81). And, here is the current CDF and LERF values:
CDF 7.86E-06 LERF 4.73E-07 Please forward to the Staff (C.J. and company) and contact us if you have any questions.
drew 1
Hearing Identifier: NRR_PMDA Email Number: 3015 Mail Envelope Properties (a048ce89ea7345419788117ed2c39a45)
Subject:
[External_Sender] FW: PRA model information for NRC Sent Date: 8/23/2016 3:06:59 PM Received Date: 8/23/2016 3:07:05 PM From: Richards, Drew Created By: amrichards@STPEGS.COM Recipients:
"Harrison Albon" <awharrison@STPEGS.COM>
Tracking Status: None "Regner, Lisa" <Lisa.Regner@nrc.gov>
Tracking Status: None Post Office: CMBXEXCH01.CORP.STPEGS.NET Files Size Date & Time MESSAGE 314 8/23/2016 3:07:05 PM STP_REV81 CDF contributions.pdf 27427 STP_REV81 LERF contributions.pdf 48535 Options Priority: Standard Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date:
Recipients Received:
Model: STP_RV81 STPEGS Probabilistic Risk Assessment Revision 8.1 Level 1 Quantification Table 2 Initiating Event Contribution to CDF STP_RV81 INITIATOR IE_Freq CDF %CDF CCDP External Events HWIND Tornado Induced Failure of Switchyard and ECP 1.22E-06 1.08E-06 13.72 8.84E-01 FR18 Control Room Fire Scenario 18 2.12E-06 8.30E-08 1.06 3.92E-02 Z047X Fire Zone 047 Scenario X 1.46E-05 3.58E-07 4.55 2.45E-02 FLECW ECW Failure Due to Breach of MCR 3.20E-07 2.83E-07 3.60 8.84E-01 Z071X Fire Zone 071 Scenario X 2.34E-07 2.07E-07 2.63 8.84E-01 Z047B Fire Zone 047 Scenario B 2.72E-03 1.60E-07 2.04 5.89E-05 Z47BC Fire Zone 047 Scenario BC 3.18E-06 6.24E-08 0.79 1.96E-02 SEIS3 Seismic Event, 0.4g Acceleration 7.74E-07 3.93E-08 0.50 5.08E-02 FR23 Control Room Fire Scenario 23 1.61E-06 2.29E-08 0.29 1.42E-02 SEIS4 Seismic Event, 0.6g Acceleration 6.14E-08 2.02E-08 0.26 3.29E-01 Z147O Fire Zone 147 Scenario O 1.08E-03 7.03E-09 0.09 6.51E-06 FL26 External Flooding Scenarios 2 Through 6 1.05E-08 9.23E-09 0.12 8.78E-01 SEIS2 Seismic Event, 0.2g Acceleration 2.89E-06 9.15E-09 0.12 3.17E-03 SEIS1 Seismic Event, 0.1g Acceleration 3.02E-05 1.74E-09 0.02 5.76E-05 FR10 Control Room Fire Scenario 10 3.43E-06 1.02E-09 0.01 2.98E-04 FL1 Flood Induced LOOP - Scenario 1 3.20E-06 9.93E-10 0.01 3.10E-04 Group Subtotal 3.87E-03 2.34E-06 29.81 Loss of Coolant Accidents ELOCA Excessive LOCA 3.54E-07 3.13E-07 3.97 8.83E-01 RCPL RCP Seal LOCA 2.36E-03 1.82E-07 2.32 7.72E-05 MLOCA Medium LOCA 4.90E-04 1.11E-07 1.41 2.26E-04 ILOCA Isolable Small LOCA 9.13E-04 4.26E-08 0.54 4.67E-05 SLOCA Non-Isolable Small LOCA 3.59E-04 2.09E-08 0.27 5.83E-05 LLOCA Large LOCA 1.34E-06 2.40E-08 0.31 1.80E-02 RCR2 2 or More RCS SRVs Open 1.02E-06 4.27E-11 0.00 4.20E-05 RCRV One RCS SRV Opens 1.45E-06 3.56E-11 0.00 2.46E-05 VSEQ Interfacing Systems LOCA 6.91E-12 4.91E-12 0.00 7.10E-01 Group Subtotal 4.13E-03 6.93E-07 8.81 Loss of Offsite Power Events LOOPG Loss of Offsite Power Grid Related 4.80E-03 6.36E-07 8.09 1.33E-04 LOOPP Loss of Offsite Power Plant Centered 8.57E-02 5.32E-08 0.68 6.21E-07 PRA-NB-41 Level 1 Results Rev 8.1.docx.1 14
Model: STP_RV81 STPEGS Probabilistic Risk Assessment Revision 8.1 Level 1 Quantification STP_RV81 INITIATOR IE_Freq CDF %CDF CCDP LOOPS Loss of Offsite Power Switchyard Related 1.11E-02 1.39E-06 17.73 1.26E-04 LOOPW Loss of Offsite Power Weather Related 4.05E-03 6.39E-07 8.12 1.58E-04 Group Subtotal 1.06E-01 2.72E-06 34.62 Steam Generator Tube Rupture SGTR Steam Generator Tube Rupture 6.49E-03 5.51E-07 7.00 8.49E-05 Group Subtotal 6.49E-03 5.51E-07 7.00 Loss of Support Systems L1DCB Loss of DC Bus E1B11 8.29E-03 7.86E-08 1.00 9.48E-06 L1DCA Loss of DC Bus E1A11 8.29E-03 8.14E-08 1.04 9.82E-06 2.74E-06 5.36E-08 0.68 1.96E-02 LOEAB3/6/9 Loss of EAB HVAC, BC/AB/ACRUN, All Support 2.74E-06 2.79E-08 0.35 1.02E-02 2.74E-06 2.79E-08 0.35 1.02E-02 4.07E-05 1.01E-08 0.13 2.47E-04 LOEAB2/5/8 Loss of EAB HVAC, BC/AB/ACRUN, HVAC A/C/B=F 4.07E-05 1.01E-08 0.13 2.47E-04 4.07E-05 1.01E-08 0.13 2.47E-04 6.10E-04 2.36E-08 0.30 3.87E-05 LOECW2/5/8 Loss of ECW, BC/AB/ACRUN, ECW A/C/B=F 6.10E-04 2.36E-08 0.30 3.87E-05 6.10E-04 2.36E-08 0.30 3.87E-05 3.94E-06 2.83E-09 0.04 7.18E-04 LOECW3/6/9 Loss of ECW, BC/AB/ACRUN, All Support 3.94E-06 2.50E-09 0.03 6.34E-04 3.94E-06 2.50E-09 0.03 6.34E-04 1.38E-05 8.30E-09 0.11 6.04E-04 LOCR3/6/9 Loss of CRE HVAC, BC/AB/ACRUN, All Support 1.38E-05 8.04E-09 0.10 5.85E-04 1.38E-05 8.04E-09 0.10 5.85E-04 1.09E-04 1.54E-09 0.02 1.42E-05 LOCR2/5/8 Loss of CRE HVAC, BC/AB/ACRUN, HVAC A/C/B=F 1.09E-04 1.54E-09 0.02 1.42E-05 1.09E-04 1.54E-09 0.02 1.42E-05 1.84E-03 1.55E-10 0.00 8.39E-08 LOCCW2/5/8 Loss of CCW, BC/AB/ACRUN, CCW A/C/B=F 1.84E-03 1.91E-10 0.00 1.03E-07 1.84E-03 1.38E-10 0.00 7.51E-08 5.50E-04 7.22E-10 0.01 1.31E-06 LOCCW3/6/9 Loss of CCW, BC/AB/ACRUN, All Support 5.50E-04 5.67E-10 0.01 1.03E-06 5.50E-04 5.67E-10 0.01 1.03E-06 Group Subtotal 2.61E-02 4.10E-07 5.21 PRA-NB-41 Level 1 Results Rev 8.1.docx.1 15
Model: STP_RV81 STPEGS Probabilistic Risk Assessment Revision 8.1 Level 1 Quantification STP_RV81 INITIATOR IE_Freq CDF %CDF CCDP General Transients SLBD Steam Line Break Outside Containment 8.58E-03 1.74E-07 2.21 2.03E-05 TTRIP Turbine Trip 4.24E-01 2.61E-07 3.31 6.14E-07 PLMFW Partial Loss of Main Feedwater 4.00E-01 2.46E-07 3.12 6.14E-07 RTRIP Reactor Trip 4.64E-01 2.81E-07 3.58 6.07E-07 LOPF Loss of Primary Flow 1.28E-01 7.81E-08 0.99 6.11E-07 SLBI Steam Line Break Inside Containment 9.31E-04 1.72E-08 0.22 1.85E-05 EXMFW Excessive Feedwater Flow 4.31E-02 2.59E-08 0.33 6.01E-07 IMSIV Closure of One MSIV 1.11E-02 6.55E-09 0.08 5.90E-07 TLMFW Total Loss of Main Feedwater 3.23E-02 1.94E-08 0.25 5.99E-07 LCV Loss of Condenser Vacuum 2.46E-02 1.47E-08 0.19 5.97E-07 SI Inadvertent Safety Injection 9.40E-03 5.75E-09 0.07 6.12E-07 AMSIV Closure of All MSIV's 1.02E-02 6.00E-09 0.08 5.88E-07 LOIA Loss of Instrument Air 5.47E-03 4.06E-09 0.05 7.42E-07 FLBO Feed Line Break in the IVC 3.26E-03 2.21E-09 0.03 6.79E-07 MSV MS Relief or Safety Valve Opening 3.85E-03 2.18E-09 0.03 5.67E-07 Group Subtotal 1.57E+00 1.14E-06 14.54 Total Reported Frequencies of the Group: 1.72E+00 7.86E-06 100.00 PRA-NB-41 Level 1 Results Rev 8.1.docx.1 16
Model: STP_RV81 STPEGS Probabilistic Risk Assessment Revision 8.1 Level 2 Results Attachment 1: Initiating Event Contributions to LERF Table Attachment 1: Initiating Event Contributions to LERF Initiator IE_Frequency Contribution CLERP HWIND2 1.22E06 1.16E07 9.52E02 LOOPS2 1.11E02 8.92E08 8.06E06 LOOPW2 4.05E03 4.09E08 1.01E05 LOOPG2 4.80E03 4.09E08 8.53E06 FLECW2 3.20E07 3.03E08 9.48E02 RTRIP2 1.46E05 1.82E08 1.25E03 Z047X2 8.58E03 1.76E08 2.05E06 TTRIP2 4.64E01 1.68E08 3.62E08 SLBDL2 4.24E01 1.53E08 3.61E08 PLMFW2 4.00E01 1.44E08 3.61E08 SGTRL2 6.49E03 8.66E09 1.33E06 Z047B2 2.36E03 7.59E09 3.21E06 RCPLL2 2.72E03 5.48E09 2.01E06 LOPFL2 2.12E06 4.91E09 2.32E03 FR18L2 1.28E01 4.52E09 3.53E08 Z071X2 2.34E07 4.34E09 1.85E02 LOOPP2 8.57E02 3.18E09 3.71E08 Z47BC2 3.18E06 3.06E09 9.61E04 L1DCA2 8.29E03 2.41E09 2.91E07 L1DCB2 2.74E06 2.25E09 8.22E04 LEB3L2 8.29E03 2.22E09 2.68E07 SEIS32 7.74E07 2.02E09 2.61E03 LEB6L2 2.74E06 1.92E09 7.01E04 LEB9L2 2.74E06 1.92E09 7.01E04 LEW5L2 6.10E04 1.55E09 2.53E06 LEW2L2 6.10E04 1.54E09 2.53E06 LEW8L2 6.10E04 1.54E09 2.53E06 EXMFW2 9.13E04 1.50E09 1.64E06 ILOCA2 4.31E02 1.47E09 3.40E08 TLMFW2 3.23E02 1.08E09 3.36E08 SLBIL2 9.31E04 1.02E09 1.10E06 LCVL2 1.05E08 9.69E10 9.22E02 FL26L2 6.14E08 8.81E10 1.44E02 SEIS42 2.46E02 8.11E10 3.29E08 LEB2L2 4.07E05 6.83E10 1.68E05 LEB5L2 4.07E05 6.83E10 1.68E05 PRA-NB-43 Level 2 Results Rev 8.1.docx 22
Model: STP_RV81 STPEGS Probabilistic Risk Assessment Revision 8.1 Level 2 Results LEB8L2 4.07E05 6.83E10 1.68E05 SIL2 9.40E03 5.06E10 5.38E08 SLOCA2 3.59E04 5.05E10 1.41E06 IMSIV2 1.11E02 3.50E10 3.15E08 AMSIV2 1.02E02 3.21E10 3.15E08 SEIS22 2.89E06 3.02E10 1.04E04 ELOCA2 3.54E07 2.84E10 8.03E04 FR23L2 1.61E06 2.79E10 1.73E04 LOIAL2 5.47E03 1.81E10 3.32E08 LEW3L2 1.38E05 1.67E10 1.21E05 LEW6L2 1.38E05 1.63E10 1.18E05 LEW9L2 1.38E05 1.63E10 1.18E05 LCR3L2 3.94E06 1.51E10 3.83E05 LCR6L2 3.94E06 1.48E10 3.76E05 LCR9L2 3.94E06 1.48E10 3.76E05 MSVL2 3.85E03 9.89E11 2.57E08 FLBOL2 3.20E06 6.66E11 2.08E05 FL1L2 3.26E03 5.88E11 1.81E08 Z147O2 1.09E04 3.02E11 2.78E07 LCR2L2 1.09E04 3.02E11 2.78E07 LCR5L2 1.09E04 3.02E11 2.78E07 LCR8L2 1.08E03 2.50E11 2.31E08 SEIS12 3.02E05 1.29E11 4.28E07 LLOCA2 1.34E06 1.20E11 9.00E06 FR10L2 3.43E06 1.15E11 3.35E06 LCC9L2 6.91E12 4.91E12 7.10E01 LCC3L2 5.50E04 4.25E12 7.72E09 LCC6L2 5.50E04 4.24E12 7.72E09 VSEQL2 5.50E04 4.24E12 7.71E09 LCC5L2 1.84E03 1.52E12 8.25E10 LCC2L2 1.84E03 0.00E+00 0.00E+00 LCC8L2 1.84E03 0.00E+00 0.00E+00 RCRVL2 1.45E06 0.00E+00 0.00E+00 MLOCA2 4.90E04 0.00E+00 0.00E+00 RCR2L2 1.02E06 0.00E+00 0.00E+00 PRA-NB-43 Level 2 Results Rev 8.1.docx 23
