Hydrogen risk in containments and particle bed issues (HYRICI): STYX dry-out heat flux testing with lateral coolant inflow

Eveliina Takasuo, Stefan Holmström, Tuomo Kinnunen, Pekka H. Pankakoski, Ensio Hosio, Ilona Lindholm, Jaakko Miettinen

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

    Abstract

    The STYX test facility which is designed to investigate the coolability of heat-generating core debris beds has been applied to study the effect of lateral flooding on the dry-out heat fluxes of porous particle beds. The test rig was modified by installation of three downcomer tubes that feed cooling water to inlets near the bottom of the particle bed by natural circulation. It was observed that the dry-out heat flux in a homogenous test bed was increased approximately 20-25%. For a stratified bed with a layer of fine particles on top of the bed no significant increase was observed. The WABE/MEWA porous media code has been utilized in modeling of the coolability tests.
    Original languageEnglish
    Title of host publicationSAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010
    Subtitle of host publicationInterim Report
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages315-325
    ISBN (Electronic)978-951-38-7267-0
    ISBN (Print)978-951-38-7266-3
    Publication statusPublished - 2009
    MoE publication typeNot Eligible

    Publication series

    SeriesVTT Tiedotteita - Research Notes
    Number2466
    ISSN1235-0605

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