ML21253A015
| ML21253A015 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 09/16/2021 |
| From: | Booma Venkataraman Plant Licensing Branch III |
| To: | Moul D Point Beach |
| Venkataraman B | |
| References | |
| Download: ML21253A015 (11) | |
Text
Point Beach Unit 1 and Unit 2 Pre-Submittal Meeting License Amendment Request Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b September 16, 2021
2 Agenda Describe Proposed License Amendment Request (LAR)
- LAR Scope
- Applicable standards, guidance
- LAR structure and content
- TSTF-505 Variations Point Beach PRA
- Quality
- Applications
- Configuration Risk Management Schedule / Implementation Questions, Follow-up Items
3 Scope Proposes RICT for selected Required Actions
- Includes RPS, ESFAS Instrumentation
- Front-stop equals current CT / 30-day maximum back-stop
- No RICT for MODE changes or shutdown ACTIONs (e.g., TS 3.0.3)
MODES 1 and 2 applicability only Required Actions modified consistent with TSTF
- Removes specified time from discovery of failure to meet LCO
- Minor changes to RPS, ESFAS instrument tables
4 Applicable Standards, Guidance TSTF-505, Revision 2
- No loss of function
- PRA functional requires design basis accident (DBA) capability be met
- Allows bounding approach for non-PRA modeled SSCs
- Addresses all hazards, including external events (e.g., fires)
NEI 06-09 (Rev. 0) - A, Risk-Informed Technical Specifications Initiative 4b, Risk-Managed Technical Specifications (RMTS)
Guidelines Regulatory Guide (RG) 1.200, Revision 2, An Approach for Determining the Technical Adequacy of Probabilistic Risk Assessment Results for Risk-Informed Activities
5 LAR Structure, Content TSTF-505, Revision 2, Model Application
- Clean copy TS pages (upon scope finalization)
- Current TS vs. TSTF cross-reference
- Includes recommended enclosures, as applicable Creates new TS 5.5.7, RICT Program Program implements NEI 06-09, Risk-Informed Technical Specifications Initiative 4b, Risk-Managed Technical Specifications Guidelines PRA Supporting Information
- PRA Technical Adequacy
- Table with proposed items and backstop using current PRA model
6 TSTF-505 Variations Current TS based on NUREG 1431, Revision 1 RPS and ESFAS Functional Unit (FU) descriptions e.g., Steam line isolation for steam flow-high coincident with Tavg low vs. low-low Service Water (SW) System Requirements e.g., Non-essential SW load flowpath isolation requirements Electrical Systems Requirements e.g., Immediate inoperability of supported required features (TS 3.8.9) e.g., One vs. one or more ACTION conditions; Non-TSTF-505 LCOs May use bounding approach
7 PRA Quality PRA Technical Adequacy
- Internal Events, Internal Flooding, Fire RG 1.200, Revision 2, peer reviewed Initial Appendix X to NEI 05-04 finding closure review complete Open findings resolution in progress.
Additional Appendix X review for closure. Planned prior to LAR submittal
- Seismic Seismic penalty will be applied to all RICTs based on current seismic hazard for CDF & LERF
- Other External Hazards will be screened with justification
8 PRA Applications Initiative 5b, Surveillance Frequency Control Program Amendments issued July 2015 (ADAMS Accession No. ML15195A201)
Amendments issued September 2016 (ADAMS Accession No. ML16196A093) 10 CFR 50.69 Amendments issued November 2018 (ADAMS Accession No. ML18289A378)
Containment Bldg. Construction Truss Design Amendments issued March 2019 (ADAMS Accession No. ML18345A110)
9 Configuration Risk Management CRMP utilizes a Real-Time Risk Model similar to existing Maintenance Rule a(4) Configuration Risk Management Program
- Uses EPRI Phoenix Risk Analysis Software
- Incorporates RICT/RMAT calculation features
- Incorporates seismic penalty factor
10 Schedule / Implementation Submit 1st Quarter 2022 Request LAR approval within one year Request 180-day implementation period
Questions, Comments and Follow-up Items