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
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Background===
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- 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.
Vision Implementation Consistent with License Focus on safety significance Operational Flexibility Monitor Implementation 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 Risk-informed Initiatives Verify Implementation True to the ROP Consistent with the Principles of Good Regulation Performance-based 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 7
Surveillance Testing
- Smart Samples (14 -
22/yr)
- Structures, systems, and components (SSCs) remain capable of performing their intended safety functions Risk-Informed completion Times
- Smart Samples (14 -
24/yr)
- Verifies that appropriate risk assessments and corresponding work controls and risk management actions are implemented during planned and emergent maintenance activities.
- One-time inspection of program implementation after NRC approval is received.
- Smart samples (8-10/yr)
- Verifies SSCs can remain capable of performing their intended safety function
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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