1. Issues of Safety Assessment of New Russian NPP Projects in View of Current Requirements for the Probability of a Large Release.
- Author
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Morozov, V. B., Kiselev, A. E., Kiselev, A. A., Dolganov, K. S., Tomashchik, D. Yu., and Krasnoperov, S. N.
- Abstract
This paper considers the issues of safety assessment of new nuclear power plant (NPP) projects with VVER Generation III+ reactors in relation to the probability target for large release, which is subject to verification in the development of a full-scale Probabilistic Safety Assessment (PSA) Level 2. The design solutions implemented in Generation III+ reactors allow reducing the probability of a severe accident (SA) due to internal initial events to a level of 10
−7 /year. Exceeding the radioactive release criterion may thus be related mainly to the consequences of beyond-design external events. This places special demands both for the selection of SA scenarios to consider and the methods for modeling the accident progression and consequences. The paper presents a method for selecting the representative SAs in the frame of PSA of new VVER NPP projects and a practical example of radiological analysis for two bounding accidents at an arbitrary NPP using an advanced integrated computer code system. [ABSTRACT FROM AUTHOR]- Published
- 2021
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