ML19274C657
| ML19274C657 | |
| Person / Time | |
|---|---|
| Issue date: | 10/01/2019 |
| From: | Antonios Zoulis NRC/NRR/DRA/APOB |
| To: | |
| RAKOVAN L/NMSS/MSST | |
| Shared Package | |
| ML19274C654 | List: |
| References | |
| Download: ML19274C657 (8) | |
Text
Inspection of Risk-Informed Initiatives Antonios M. Zoulis Branch Chief Division of Risk Assessment Office of Nuclear Reactor Regulation National State Liaison Officer Conference September 4, 2019
Background
- As presented earlier, operating reactor licensees are in the process of adopting voluntary Risk Informed Initiatives that provide them flexibility to change their programs using PRA inputs.
- When properly implemented, risk-informed initiatives can improve safety while providing licensees with additional operational flexibility.
- As with any licensee-controlled program independent verification by the NRC provides additional assurance that the program is being implemented correctly.
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Vision Implementation Consistent with Focus on safety License significance Monitor Operational Implementation Flexibility via Inspection 3
Working Group
- Objective: Ensure a smooth transition to oversight for licensees approved for RI initiatives
- Training/awareness for inspectors
- Monitoring oversight activities
- Recommendations on Inspection Procedure changes (if needed)
- Recommendations on other oversight document changes (if needed)
- Supporting Personnel
- Program office support from Division of Risk Assessment (DRA) and Division of Inspection and Regional Support (DIRS)
- Regional support from Senior Reactor Analysts, region based Inspectors, Resident/Senior Resident Inspectors 4
Inspection & Oversight Key Principles Verify True to the ROP Implementation Risk-informed Initiatives Performance- Consistent with based the Principles of Good Regulation 5
Inspection & Oversight Key Principles (Cont.)
- Risk-informed initiatives - when implemented properly - appropriately focus NRC and licensee resources on areas of greatest safety significance.
- Trust but verify. NRC expects/assumes that licensees are implementing risk-informed initiatives in accordance with current licensing bases (CLB) and performance-based inspection is needed to verify.
- Inspection should be consistent with Reactor Oversight Process bases (both technical and policy).
- NRC strives to ensure any changes to the inspection program promote efficiency without compromising safety.
- Performance-based Inspections focuses on those aspects of risk-informed initiatives that - if improperly implemented - could lead to increased plant risk.
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Oversight and Inspection Surveillance Testing Risk-Informed 10 CFR 50.69
- Smart Samples (14 - completion Times
- One-time inspection of 22/yr)
- Smart Samples (14 - program implementation
- Structures, systems, 24/yr) after NRC approval is and components
- Verifies that appropriate received.
(SSCs) remain capable risk assessments and
- Smart samples (8-10/yr) of performing their corresponding work
- Verifies SSCs can intended safety controls and risk remain capable of functions management actions performing their are implemented during intended safety function planned and emergent maintenance activities.
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References
- Regulatory Guide 1.174, Revision 3, An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant-Specific Changes to the Licensing Basis, Jan 2018, (ML17317A256).
- Final SE for NEI Topical Report NEI 06-09, Risk-Informed Technical Specifications Initiative 4b, Risk-Managed Technical Specifications Guidelines, May 17 2007, (ML071200238).
- SECY-98-144, White Paper on Risk-Informed and Performance-Based Regulation, June 22, 1998.
- IMC-0308 Attachment 2, Technical Basis for Inspection Program, January 5, 2018 (ML16306A386).
- SECY-18-0060, Achieving Modern Risk-Informed Regulation, May 23, 2018 (ML18110A187).
- Use of Probabilistic Risk Assessment Methods in Nuclear Regulatory Activities; Final Policy Statement, August 16, 1995 (60 FR 42622).
- Inspection Procedure (IP) 71111.22, Surveillance Testing, (ML18177A109).
- IP 71111.12, Maintenance Effectiveness, (ML15023A102).
- IP 71111.13, Maintenance Risk Assessments and Emergent Work Control. (ML17194A934)
- IP 37060, 10 CFR 50.69 Risk-Informed Categorization and Treatment of Structures, Systems, and Components Inspection, (ML102700396).
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