PH 8.01/99 - Seminar, Brussels, 9 November 2005 PH 8.01/99 – Seminar on “Dissemination of PHARE projects description and results” Overview of BG PHARE nuclear safety assistance projects and summary on project BG Enhancement of safety assessment capabilities available to Bulgarian Nuclear Safety Authority N. Vlahov, BNRA Executive Secretary

PH 8.01/99 - Seminar, Brussels, 9 November 2005 Content Scope of PHARE assistance to BNRA PHARE projects implemented PHARE projects started PHARE projects - under tendering and drafting phase Proposed project for PHARE’2005 Regulatory decision making as a result of implementation of BG (BG/TS/17) Conclusion

PH 8.01/99 - Seminar, Brussels, 9 November 2005 Scope of PHARE assistance Transfer of Western regulatory methodologies and practices to the Bulgarian Nuclear Safety Authority Support to BNRA in the licensing process –Modifications –Decommissioning –Safety assessments –Radioactive waste management Emergency preparedness

PH 8.01/99 - Seminar, Brussels, 9 November 2005 PHARE projects implemented BG/RA/03 - Transfer of Western European regulatory methodology and practices to the nuclear safety authority of Bulgaria (3 years) –STRATEGY & MANAGEMENT PROCEDURES - internal QA programme and emergency preparedness manual –INSPECTION PRACTICES –ASSESSMENT METHODOLOGY Successfully completed in December 1999

PH 8.01/99 - Seminar, Brussels, 9 November 2005 PHARE projects implemented BG Institutional Building of BNRA – Support on Licensing Activity Related to Decommissioning of NPP Kozloduy Units 1 & 2 Successfully completed in October 2003 ZZ (BG/TS/15) - Enhancement of safety assessment capabilities of BNRA –Support in the review and assesment of the modernisation programs of units 3-6 Successfully completed in September 2005

PH 8.01/99 - Seminar, Brussels, 9 November 2005 PHARE projects implemented BG (BG/TS/17) - Enhancement of safety assessment capabilities available to BNRA –Continuation of BG/TS/15, including SAR review of Kozloduy 3&4, RPV integrity and improvement of QM system Successfully has been completed in September /000/ Assistance to BNRA in improving management of high activity sealed radioactive sources (SRS) Successfully has been completed in October 2005

PH 8.01/99 - Seminar, Brussels, 9 November 2005 Ongoing PHARE projects 2003/ Assistance to BNRA in the development of requirements and procedures for decommissioning of Kozloduy units 1 and 2, follow-up –support to NRA in reviewing of Kozloduy NPP submittals on decommissioning issues –improving NRA and TSO’s competence in assessing of decommissioning/dismantling activities –developing guidelines in decommissioning related areas Project started in September / Severe Accident Management Guidelines (SAMGs) review and assessment in compliance with international requirements –Review of SAMGs of Kozloduy 3-6, developed under a PHARE project –Improvement of BNRA capacity through training and transfer of knowledge and know-how Project started in October 2005

PH 8.01/99 - Seminar, Brussels, 9 November 2005 PHARE projects coming 2004/ Safety Analysis Report of Kozloduy NPP Units 5 and 6. Review and assessment in compliance with international requirements ToR is approved. Thendering phase. Project is planed to start in April / Improvement of the Off-site Emergency Preparedness (OSEP) in Central and Eastern Europe: Installation of the RODOS System in Bulgaria Project is planed to start in 2006

PH 8.01/99 - Seminar, Brussels, 9 November 2005 PHARE projects coming 2004/ Assistance to the Bulgarian Nuclear Regulatory Agency in capacity building in the areas of regulatory guides, assessment capabilities, staff training and quality management; –development and enforcement of regulatory safety guides –performing safety assessments and review of licensee safety documentation –drawing and implementing regulatory training programs –Further improvement of the QMS Project is planed to start in 2006

PH 8.01/99 - Seminar, Brussels, 9 November 2005 Regulatory decision making as a result of implementation of BG (1) BG/TS/17 project “Enhancement of safety assessment capabilities available to BNRA” Purpose –Support to Bulgarian Nuclear Safety Authority and its TSOs in the review of the safety cases for Kozloduy NPP – 3, 4, 5 and 6, including regulatory reviews and approval of plant-specific, in-depth analysis reports in compliance with widely applied practices within the EU; –Develop a modern well-documented quality management system and implementation of this system at the BNRA; –Assist BNRA and its TSOs with the regulatory review and assessment of the measures to ensure reactor pressure vessel integrity for Kozloduy NPP 3, 4, 5 and 6; –Transfer of know-how to BNRA and its TSOs for long term perspective, enhancing their competence and capabilities.

PH 8.01/99 - Seminar, Brussels, 9 November 2005 Scope of the project T echnical assistance to review and assess: –nearly 21 technical measures from the Modernisation Programs of units 5-6 of Kozloduy NPP; –Safety Analysis Reports for units 3, 4; –Reactor pressure vessels integrity surveillance programs; –BNRA Quality Management System. Project implementation period: Regulatory decision making as a result of implementation of BG (1)

PH 8.01/99 - Seminar, Brussels, 9 November 2005 BG project management - carried out by RISKAUDIT, supported by IRSN, GRS, STUK, VTT, AVN, HSE, Serco Assurance, REZ and BG TSOs - Energy Institute, EAE Engineering, Institute of Metal Science to the BAS; - The consortium of Western and Bulgarian experts - an essential contribution to the BNRA decision making Methodology Following the two-phase approach, RISKAUDIT (RA) have submitted for each project topic: –Interim reports - on the comprehensiveness and completeness of the reviewed documents and on a preliminary assessment of selected key safety issues; –Technical reports - on the results of a detailed review of the documents and, if necessary, independent analyses and calculations. Regulatory decision making as a result of implementation of BG (1)

PH 8.01/99 - Seminar, Brussels, 9 November 2005 BNRA decision making process based on: –BNRA own complete review and assessment –RA Final Technical reports recomendations, which incorporate harmonised recommendations of Western and Bulgarian experts –RA recommendations review by BNRA experts Review of following documentation: –Safety related studies and analyses –Applications on plant modifications Regulatory decision making as a result of implementation of BG (1)

PH 8.01/99 - Seminar, Brussels, 9 November 2005 Safety related studies and analyses –part of the overall plant safety substantiation (SARs); –issuing of specific permit is not required; –regulatory decisions for acceptance or not are made depending on the significance of comments and recommendations: >Significant BNRA comments and RA recommendations (Final technical reports) are sent to the licensee for consideration in the next revisions of the document or SAR. >Specific examples: The Final technical reports for several topics of BG Regulatory decision making as a result of implementation of BG (1)

PH 8.01/99 - Seminar, Brussels, 9 November 2005 Applications for plant modifications –Permit is required by the legislation; –Technical dossier (basic design, detailed design, etc.) submitted together with the application for review; –Over 30 modification permits issued within project scope: >In cases of adequate safety justification and minor RA and BNRA comments - specific conditions and additional regulatory requirements are set in the individual permits Insufficient justification –Permit is not issued; RA and BNRA comments are sent to the applicant for consideration in the design documentation. Regulatory decision making as a result of implementation of BG (1)

PH 8.01/99 - Seminar, Brussels, 9 November 2005 Conclusions 21 technical measures from the large modernisation programs, safety analysis reports and safety substations of units 3-6 of Kozloduy NPP have been reviewed during project implementation Assistance of Western TSOs played essential role for enhancement of the safety assessment capabilities by: –directly contributing to the BNRA decision making –transfer of knowledge and experience to Bulgarian TSOs and BNRA experts All tasks successfully managed and completed to meet the BNRA demands - high level of flexibility applied All RA recommendations appropriately considered Project objectives are met