AUTHORS: Pavlo Krukovskyi, Mihail Metel, Anatolii Polubinskyi

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ABSTRACT: This paper describes the purpose and the design of the New Safe Confinement (NSC), which was raised and slid over the destroyed Reactor Unit 4 and 'Object Shelter' (SO) of the Chernobyl nuclear power plant and shows the examples of CFD modeling of these objects. Paper shows important physical processes, such as heat, air, humidity and radioactive aerosols (RA) transfer, taking place in the SO and NSC and the necessity of their analysis and forecasting, which eventually determine the safety of people and the 100-year lifetime of the NSC. Paper shows how developed 3D CFD model allows analyzing the thermal and humidity state to check the design of the NSC ventilation system and estimate present and future levels of RA concentrations.

KEYWORDS: Chernobyl NPP, New Safe Confinement, destroyed reactor, radioactive aerosols, environment, modelling

REFERENCES:

[1] 'Chernobyl Sarcophagus'. Chernobyl International. Retrieved 2010-11-30.

[2] Conceptual design of the New Safe Confinement, Chernobyl Nuclear Power Plant - Block 4, State Specialized Enterprise 'Chernobyl Nuclear Power Plant (SSE ChNPP)', Kyiv region, Ukraine, 2003.

[3] 'A Second Shelter for Chernobyl' - Proceedings of the Institution of Civil Engineers - February, 1997 - Paper 11133.

[4] ANSYS FLUENT 12.0/12.1. Documentation. https://www.sharcnet.ca/Software/Fluent12/ind ex.htm

[5] 5. Khan V.Yen-I., Ogorodnikov B.I., Kalynovskiy O.K., Krasnov V.O. Monitoring of radioactive aerosol releases from «Shelter» object in 2014 year. // Problems of safety of nuclear power plants and Chornobyl.- 2015. - Iss. 24. - P. 100 – 109.