ML20181A393: Difference between revisions

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Lessons Learned from Risk-Informed Licensing Submittals
Lessons Learned from Risk-Informed Licensing Submittals


Status
Status 3
* Focus has been on reviews of TSTF-505 and the 10 CFR 50.69 license amendment requests
* Focus has been on reviews of TSTF-505 and the 10 CFR 50.69 license amendment requests
* 10 amendments for TSTF-505 have been issued
* 10 amendments for TSTF-505 have been issued  
  - 3 recently issued
- 3 recently issued
  - 7 under active review
- 7 under active review
* 16 amendments for 10 CFR 50.69 issued
* 16 amendments for 10 CFR 50.69 issued
  - 2 recently issued
- 2 recently issued
  - 5 under active review 3
- 5 under active review


Staff Review Depends on the Application 4b, Risk-Informed Completion Times        Greater    50.69 reliance    after NFPA-805, Risk-Informed Fire on PRA      TSTF-505 Acceptability                                           review Protection Required scope,                               More        should level of detail,                             flexibility reduce technical                                 for        review 50.69 SSC Categorization robustness, and                               licensee   effort plant More representation        5b, Risk-Informed complex Surveillance Frequencies  staff review Risk-Informed Inservice Inspection 4
Staff Review Depends on the Application 4
Risk-Informed Inservice Inspection 50.69 SSC Categorization 5b, Risk-Informed Surveillance Frequencies NFPA-805, Risk-Informed Fire Protection 4b, Risk-Informed Completion Times Acceptability Required scope, level of detail, technical robustness, and plant representation Greater reliance on PRA More flexibility for licensee More complex staff review 50.69 after TSTF-505 review should reduce review effort


Factors That Impact Risk-Informed Licensing Review Time Review Time (h)
Factors That Impact Risk-Informed Licensing Review Time 5
ILRT TSTF-505 Use of F&O Closure Process No Deviations Limited Scope (IE PRA Only)
Review Time (h)
Extensive open F&Os Many Deviations Large PRA Scope (Ext. Hazards)
Extensive open F&Os Many Deviations Large PRA Scope (Ext. Hazards)
ILRT One-Time Changes                       Use of F&O Closure Process 50.69             No Deviations RI-ISI            TSTF-425                                                                           5 TSTF-505  Limited Scope (IE PRA Only)
One-Time Changes RI-ISI 50.69 TSTF-425


Positive Trends
Positive Trends 6
* Significant improvement in PRA Acceptability for applications
* Significant improvement in PRA Acceptability for applications
  - Use of F&O Closure process reduced F&O review effort
- Use of F&O Closure process reduced F&O review effort
* 50.69 industry LAR review boards
* 50.69 industry LAR review boards
* Concurrent reviews
* Concurrent reviews
Line 43: Line 46:
* Excellent audit support, including recent remote audits
* Excellent audit support, including recent remote audits
* Continued dialogue
* Continued dialogue
* Internal staff efforts to improve review efficiency 6
* Internal staff efforts to improve review efficiency


LIC-206, Revision 1:
LIC-206, Revision 1:
Integrated Risk-Informed Decision-Making (RIDM) for Licensing Reviews
Integrated Risk-Informed Decision-Making (RIDM) for Licensing Reviews


Motivation and Objectives SRM SECY 19-00361     Culture Change:
8 Motivation and Objectives RIDM Action Plan3 SRM-M1705112 SRM SECY 19-00361 Culture Change:
* Increase Use of     LIC-206 for RIDM                Licensing SRM-
Increase Use of RIDM Integrate Technical Reviewers LIC-206 for Licensing Reviews 1 ML19183A408 2 ML17177A397 3 ML18317A117
* Integrate Technical M1705112 Reviews Reviewers RIDM Action Plan3 1 ML19183A408 2 ML17177A397 3 ML18317A117 8


Key Elements of LIC-206, Revision 1 Guidance for technical Technical Reviewer Focused reviewers on constructing Guidance risk arguments Simplified flowcharts and Clarified and Simplified     checklist Process Implementation       Sample safety evaluation language Integrate risk insights to Enhanced Use of Risk Insights reach regulatory decisions Based on Recent Experience   Adjust scope and level of effort 9
9 Key Elements of LIC-206, Revision 1 Technical Reviewer Focused Guidance Guidance for technical reviewers on constructing risk arguments Clarified and Simplified Process Implementation Simplified flowcharts and checklist Sample safety evaluation language Enhanced Use of Risk Insights Based on Recent Experience Integrate risk insights to reach regulatory decisions Adjust scope and level of effort  


Next Steps
10 Next Steps
* Rollout NRC
* Rollout
* Implementation
* Implementation
* Lessons Learned and Improvements
* Lessons Learned and Improvements NRC
* Consider providing risk insights, if External    they strengthen the case
* Consider providing risk insights, if they strengthen the case
* Risk insights not limited to CDF and Stakeholders  LERF values 10}}
* Risk insights not limited to CDF and LERF values External Stakeholders}}

Latest revision as of 20:22, 10 December 2024

Risk-Informed Licensing Reviews Presentation (1)
ML20181A393
Person / Time
Issue date: 06/30/2020
From: Gregory Bowman
NRC/NRR/DRA
To:
Office of Nuclear Reactor Regulation
Schwab A
Shared Package
ML20181A423 List:
References
Download: ML20181A393 (10)
v • d • e


Text

Risk-Informed Licensing Reviews Greg Bowman Deputy Director, Division of Risk Assessment Office of Nuclear Reactor Regulation Risk-Informed Steering Committee Meeting June 30, 2020

Lessons Learned from Risk-Informed Licensing Submittals

Status 3

  • 10 amendments for TSTF-505 have been issued

- 3 recently issued

- 7 under active review

- 2 recently issued

- 5 under active review

Staff Review Depends on the Application 4

Risk-Informed Inservice Inspection 50.69 SSC Categorization 5b, Risk-Informed Surveillance Frequencies NFPA-805, Risk-Informed Fire Protection 4b, Risk-Informed Completion Times Acceptability Required scope, level of detail, technical robustness, and plant representation Greater reliance on PRA More flexibility for licensee More complex staff review 50.69 after TSTF-505 review should reduce review effort

Factors That Impact Risk-Informed Licensing Review Time 5

ILRT TSTF-505 Use of F&O Closure Process No Deviations Limited Scope (IE PRA Only)

Review Time (h)

Extensive open F&Os Many Deviations Large PRA Scope (Ext. Hazards)

One-Time Changes RI-ISI 50.69 TSTF-425

Positive Trends 6

  • Significant improvement in PRA Acceptability for applications

- Use of F&O Closure process reduced F&O review effort

  • 50.69 industry LAR review boards
  • Concurrent reviews
  • Inclusion of previous RAI responses in LARs
  • Excellent audit support, including recent remote audits
  • Continued dialogue
  • Internal staff efforts to improve review efficiency

LIC-206, Revision 1:

Integrated Risk-Informed Decision-Making (RIDM) for Licensing Reviews

8 Motivation and Objectives RIDM Action Plan3 SRM-M1705112 SRM SECY 19-00361 Culture Change:

Increase Use of RIDM Integrate Technical Reviewers LIC-206 for Licensing Reviews 1 ML19183A408 2 ML17177A397 3 ML18317A117

9 Key Elements of LIC-206, Revision 1 Technical Reviewer Focused Guidance Guidance for technical reviewers on constructing risk arguments Clarified and Simplified Process Implementation Simplified flowcharts and checklist Sample safety evaluation language Enhanced Use of Risk Insights Based on Recent Experience Integrate risk insights to reach regulatory decisions Adjust scope and level of effort

10 Next Steps

  • Rollout
  • Implementation
  • Lessons Learned and Improvements NRC
  • Consider providing risk insights, if they strengthen the case
  • Risk insights not limited to CDF and LERF values External Stakeholders
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