ML18065A020
| ML18065A020 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 03/12/2018 |
| From: | Shawn Williams Plant Licensing Branch II |
| To: | |
| Williams S, NRR/DORL/LPLII-1 | |
| Shared Package | |
| ML18065A015 | List: |
| References | |
| Download: ML18065A020 (8) | |
Text
Joseph M. Farley Nuclear Plant Risk-Informed Technical Specifications Risk-Informed Initiative 4b Pre-submittal Meeting March 12, 2018
Overview Farley 4b License Amendment Request (LAR)
- Plant specific application based on the approved Vogtle Safety Evaluation(SE)
- Implementation plans
- Probabilistic Risk Assessment (PRA) models
- LAR Enclosures
- SNC Requests Key Dates
- Vogtle Application approved June 2017
FNP Identical to Vogtle Application
- Identical to approved Vogtle Risk-Informed Technical Specifications (RITF)
- Methods license condition identical to Vogtle
- Tech Spec Section 3.3, Instrumentation, not in scope
- Use of either Common Cause Failure (CCF) Risk Managed Actions (RMAs) or modify CCF factors as required when applying an emergent Risk-Informed Completion Time (RICT)
- Use of 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> backstop and design-basis parameter success criteria for Loss of Function (LOF) RICT
- Providing examples of RMAs planned during RICTs related to TS inoperability of electrical equipment, like Diesel Generators (DGs),
Inverters and offsite sources.
- Vogtle Requests for Additional Information (RAI) incorporated and explicitly described in Attachment 1.
4
Implementation Plans
- Implementing procedures are based on
- NEI 06-09 guidance
- NRC Vogtle 4b audit inputs
- Vogtle RAI responses
- FNP site is planning for a 4b implementation by the middle to end of 2019 by focusing on:
- Change management
- Procedures changes to make fleet procedures applicable to Farley
- Training to be delivered to Operations, Work Management and Supervision; as it was for Plant Vogtle.
5
Farley PRA Models
- Appendix X not utilized
- F&O resolutions reviewed in previous submittals
- NFPA 805
- Original SE - March 10,2015 - ML14308A048
- Final SE - November 1, 2017 - ML17269A166
- ILRT (SE - ML17261A087)
- 5b, Surveillance frequency control program(SE ML11167A226)
- Fire model data updates
- Incipient Detection
- FAQ-08-046 to NUREG 2180
- Reactor Coolant Pump Shutdown Seal model credit
- (Verification of approval version: ML17200C865)
- Fire Ignition Frequencies (NUREG 2169)
- Heat Release Rates (NUREG 2178) 6
LAR Enclosures : List of Revised Required Actions to Corresponding PRA Functions.
Similar to VEGP LAR in content RICT calculations based on PEER Reviewed frozen models (previous version of the model)
Example calculations of RICTs Actual RICTs may vary based on plant configuration Review of Vogtle RAI for DC subsystems : Information Supporting Consistency with Reg. Guide 1.200, Revision 2.
Documents resolution of F&Os for Internal, Internal Flooding and Internal Fire PRAs : Information Supporting Justification of Bounding Analysis or Excluding Sources of Risk Not Addressed by the PRA Models Documents use of Seismic bounding value based on convolution of FNP IPEEE and EPRI 2014 hazard : Baseline CDF and LERF Total CDF/LERF meet 1E-04/1E-05 RG 1.1.74 risk thresholds based on latest version FNP models : PRA Model Update Process : Attributes of the CRMP Model : Key Assumptions and Sources of Uncertainty : Program Implementation : Cumulative Risk and Performance Monitoring Program 0: Risk Management Action Example 7
SNC Requests 8
Alignment on plant specific applications Identical to Vogtle Any issues with NRC approval of Vogtle 4b Use of previously approved models and recent changes NRC Staff feedback on SNC approach to Enclosure 1