ML21025A003: Difference between revisions

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{{#Wiki_filter:Public Meeting on Risk-Informed Process for Evaluations Andrew Mauer Technical Advisor Victoria Anderson Technical Advisor January 26, 2021
{{#Wiki_filter:}}
©2021 Nuclear Energy Institute
 
Introduction Industry appreciates the continued effort to focus NRC and licensee resources on the most safety significant issues RIPE and the VLSSIR process are viewed as examples of the NRC becoming a modern, risk-informed regulator We look forward to providing input over the course of this year to realize and maximize the use of these processes across the NRC
                                                                ©2021 Nuclear Energy Institute 2
 
Insights Regarding RIPE Process Development of streamlined licensing actions using a risk-informed approach is appropriate We appreciate the significant amount of effort that went into complete the initial phase of RIPE and for your consideration of stakeholder comments
* Industry will be issuing RIPE IDP guidance and completing a submittal template We also appreciate the NRCs acknowledgement and commitment to expanding the use of RIPE to allow use by licensees with TS-425
                                                            ©2021 Nuclear Energy Institute 3
 
Comparison of PRA Acceptability by Program Increasing                                      External Internal  Internal Fire PRA                                          Hazards Events PRA      PRA PRA Rigor Capability Qualitative  Qualitative RIPE    Category I of N/A        of N/A (Screening)
Capability  Qualitative/ Qualitative/
TSTF-425 Category II  Bounding    Bounding Site specific (Qualitative/
Capability    Capability TSTF-505                            Bounding or Category II  Category II Capability Category II
 
Concept For RIPE Using TS-425 Example 1: Issue Involving Seismic Considerations Licensee risk informed application status
* TSTF-425 approved
* Submitted quantitative seismic risk evaluation 50.54(f) resolution
* 50.69 approved (no fire or seismic model used)
Can RIPE be used?
* Yes What should be referenced in RIPE submittal?
* TSTF-425 LAR and SE
* Quantitative seismic risk evaluation for 50.54(f) resolution
* Description of seismic and internal events findings not closed in a formal finding closure
 
Example 2: Issue Involving Fire Considerations Licensee risk informed application status
* TSTF-425 approved
* NFPA 805 approved and implemented Can RIPE be used?
* Yes What should be referenced in RIPE submittal?
* TSTF-425 LAR and SE
* NFPA 805 LAR and SE
* Description of fire and internal events findings not closed in a formal finding closure
 
Example 3: Issue Involving External Flood Considerations Licensee risk informed application status
* TSTF-425 approved
* NFPA 805 approved and implemented Can RIPE be used?
* No
 
PRA Technical Adequacy Documentation for RIPE Plant with TSTF-505          Plant with TSTF-425 PRA Scope used in IDP              Describe for the specific submittal evaluation PRA Scope for    Describe scope of        Describe scope of PRA from Approved    PRA from TSTF-505            TSTF-425 Application Applications      Application        Describe scope of PRA from other applications, if applicable PRA Technical  Reference TSTF-505      Reference TSTF-425 LAR and SE Adequacy for      LAR and SE Internal Events PRA Technical  Reference TSTF-505      Reference TSTF-425 LAR and SE Adequacy for      LAR and SE        Reference LAR and SE from other Other PRAs                                applications, if applicable Status of Open                          Articulate any open peer review Findings            N/A            findings from relevant PRA models above
 
Next Steps Complete revisions to RIPE to allow use of TS-425 under a streamlined review process Identify lead plant to use RIPE process Continued use of VLSSIR process, as appropriate Begin a dialogue on expansion of RIPE to issues not quantitatively evaluated in a PRA
                                                        ©2021 Nuclear Energy Institute 10
 
Conclusion We appreciate the NRCs risk-informed approach to address issue of low safety significance which helps focus NRC and licensee resources on the most safety significant issues.
                                                ©2021 Nuclear Energy Institute 11}}

Revision as of 07:58, 18 January 2022

Risk-Informed Process for Evaluations (RIPE) - NEI Public Meeting Presentation Slides
ML21025A003
Person / Time
Site: Palo Verde  Arizona Public Service icon.png
Issue date: 01/26/2021
From: Anderson V, Mauer A
Nuclear Energy Institute
To:
Plant Licensing Branch IV
Lingam S, NRR/DORL/LPL4, 301-415-1564
Shared Package
ML20025A005 List:
References
EPID L-2019-LRO-0074
Download: ML21025A003 (11)
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