Core melt stabilization (COMESTA): HECLA Experiments on Melt-Concrete Interactions

Tuomo Sevon, Stefan Holmström, Jouko Virta, Tuomo Kinnunen

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


    The HECLA experiments investigate interactions between metallic melt and concrete. They involve pouring of 50 kg of stainless steel into a cylindrical concrete crucible. Three full-scale experiments have already been performed, one with ordinary siliceous concrete and two with hematite-containing concrete, similar to the sacrificial concrete in the EPR reactor pit. The ablation depths have been between 0 and 30 mm. Clear differences between the two concrete types have not been observed. Dramatic effects, e.g. explosive spalling, have not taken place.
    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
    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


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