Reliability Analyses of a Passive Emergency Core

Cooling System

Aleksandra Luks

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Place of internship:KTH (The Royal Institute of Technology) AlbaNova, Department of Nuclear Technology – Sweden

Term of internship:01.03.2015-31.05.2015

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Topics of internship:Reliability Analyses of a Passive Emergency Core Cooling System

There are no publications, but they will be written in the next few months.

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The research perform the reliability analysis of passive ECCS using a three-dimensional thermal-hydraulic model of the reactor core. The 3D model will be implemented into a CFD code (OpenFOAM) using a porous media approach with distributed heat sources. A new model will be used to calculate the fuel and clad temperature in the core.

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Main steps in the internship plan:• literature study on new reactor designs with passive

ECCS, reliability study of passive systems, methods of analysis of passive systems, methods of uncertainty analyses for passive systems

• performance of the analytical model• development of porous media CFD model of a reactor

core, including heat sources due to decay heat• development of a model to calculate the local effective

clad temperature