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  • Structure integrity assessment of RCS pressurizer [Elektronski vir]
    Gubeljak, Nenad ...
    In regular operations of nuclear power plant, the pressurizer has main role to ensure steam pressure and dumping of pressure caused by water level changes in primary coolant system. The most loaded ... is lower spherical section of pressurizer. This part was made from two materials clad and substrate. Lower spherical section and nozzle for pipeline are connected by welded joint. It has been found that locally near the weld joint is the highest stress caused by internal pressure and thermodynamic load. Paper presents the structure integrity assessment of pressurizer bottom part considering interaction of all three material properties. The structure integrity is performed for pressurizer with assumed semi-elliptical surface crack and through thickness crack. The obtained results of numerical analysis show that maximum internal pressure can not cause the unstable fracture. However, in the case of further crack propagation the leak-before-break (LBB) fracture behavior appear before failure of the component.
    Vir: Proceedings [Elektronski vir] (Str. 612-1-612-11)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2010
    Jezik - angleški
    COBISS.SI-ID - 14712854