Article title

Abstract

Keywords

1. Introduction

2. Initial design solutions for NVNPP Units 3 and 4 (V-179)

3. The concept and implemented decisions on modernization of Units 3 and 4 to extend their service life up to 45 years

4. The concept and implemented decisions on re-modernization of NVNPP Unit 4 to extend their service life up to 60 years

5. The structure of the high pressure emergency core cooling system

6. The low pressure emergency core cooling system

7. The spray system and combined sealed compartments

8. Assessment of the main irreplaceable equipment life extension capability

9. Conclusion

References