EUStressTestforIgnalinaNPP–LicenseesProgressReport-ensreg.doc

REPUBLIC OF LITHUANIA STATE NUCLEAR POWER SAFETY INSPECTORATE NATIONAL PROGRESS REPORT ON “STRESS TESTS” Prepared by Checked by Checked by Approved by Position Expert of Safety Analysis Division Head of Safety Analysis Division Head of Nuclear Safety Department Acting Head of VATESI Name S. Tiurin E. Kimtys S. ?lepavi?ius M. Dem?enko Signature Date Contents 1. INTRODUCTION 3 2. GENERAL DATA ABOUT THE SITE/PLANT 3 2.1. Ignalina NPP general characteristics 3 2.2. Main characteristics of the Units 4 2.3. Current state of the Units 5 2.4. Main characteristics of Spent Fuel Storage 5 2.5. Safety significant differences between Units 6 2.6. Probabilistic safety assessment 7 3. ASSESSMENT OF EXTREME SITUATIONS 8 3.1. Earthquake 8 3.2. Flooding 9 3.3. Loss of electrical power and loss of the ultimate heat sink 9 3.4. Severe accident management 11 4. PRELIMINARY CONCLUSIONS AND RECOMMENDATIONS 14 4.1. Earthquake 14 4.2. Flooding 14 4.3. Loss of electrical power and loss of the ultimate heat sink 14 4.4. Severe accident management 15 5. REFERENCES 15  1. INTRODUCTION The European Council of 24/25 March 2011 stressed the need to fully draw the lessons from recent events related to the accident at Fukushima Daiichi Nuclear Power Plant, and to provide all necessary information to the public. The European Council decided that all EU nuclear power plants should be reviewed, on the basis of a comprehensive and transparent risk and safety assessment (“stress tests”). European Commission and the European Nuclear Safety Regulators Group (ENSREG) on 24 May 2011 confirmed the specification of declaration which defines technical scope and the process to perform the “stress tests” and their review [1]. There is the single enterprise in Lithuania – state enterprise Ignalina Nuclear Power Plant (Ignalina NPP) – corresponding the scope of European Commission and ENSREG declaration. In response to the declaration regulatory authority of Lithuania – State Nuclear Power Safety