NEA Topical Conference “Improving nuclear safety through operating experience feedback”

1. NEA Topical Conference “Improving nuclear safety through operating experience feedback” Cologne, Germany, 29th – 31st May 2006 TOOLS USED IN EVALUATING OPERATING EXPERIENCE: ARE THE PRESENT TOOLS SUFFICIENT ? AND IF NOT, WHAT MORE IS NEEDED ? PALOMA SENDÍN CSN Commissioner

2. NEA Topical Conference • FOCUS OF CSN REGULATORY ACTION IN OE • Follow-up and analysis of events • Oversight of the OE Programmes of Licensees • Attention to international OE

3. NEA Topical Conference • PROCESSES AND TOOLS • Collection of information • Event notification procedures • Operating events database • Other findings • Discussions with licensees • Screening tools • Deterministic and probabilistic criteria • Event Review Panel

4. NEA Topical Conference • PROCESSES AND TOOLS (Cont.) • Assessment tools • Risk considerations (CCDP) • Plant-specific PSAs • Root-cause analysis • Trending analysis • Reactive inspections • Special follow-up of significant and generic events • Event Review Panel

5. NEA Topical Conference • PROCESSES AND TOOLS (Cont.) • Oversight of the OE Programmes of Licensees • Evaluation of annual reports • Programmed inspections • Human and organizational issues • Performance indicators • Follow–up of corrective actions programmes

6. NEA Topical Conference • PROCESSES AND TOOLS (Cont.) • Attention to international OE • IRS, NEWS (INES), events in other countries • Participation in international fora and working groups • Feedback to Licensees • Generic Letters • Regulatory requirements

7. NEA Topical Conference • SUFFICIENT TOOLS SEEM TO EXIST • Internationally sound and accepted methodology • Tools both for operators and regulators • Complementarity of operators and regulators programmes

8. NEA Topical Conference • BUT SOMETHING FAILS • Recurrence of events • Weak points in present OEPs • Human resources shortfalls • Procedural matters • Lessons unlearned

9. NEA Topical Conference • THE SPANISH EXPERIENCE • Lessons learned from Vandellós II NPP • Implementation of a new NPP oversight programme • Other aspects

10. NEA Topical Conference • LESSONS LEARNED FROM VANDELLÓS II NPP • Weaknesses in CSN´s regulatory oversight • Consistency between licensing and inspection criteria • Guidelines for self-assessment procedures • Improving the response to events within the CSN • Supervision of the licensee safety management • Ways of interaction with licensees and information exchange • Decision-making and internal management • Distinction between respective roles of CSN and the licensee

11. NEA Topical Conference • NEW OVERSIGHT PROGRAMME • Focus inspection in areas of greater risk concern • Devote higher attention to worst performing NPPs • Use objective NPP performance indicators • Prompt and understandable public communication • Reduce unnecessary regulatory burden • Regulatory action proportional to results and predictable • Adapted ROP model taking into account Spain’s specificities

12. NEA Topical Conference • NEED FOR A MORE EFFICIENT USE OF TOOLS • Clear guidelines for notification of events • Prompt assessment and communication • Increased use of information from resident inspectors • Systematic corrective actions programmes • OE findings by the Event Review Panel • Integrated information process