Investigation on ruthenium transport in highly oxidising conditions

Ari Auvinen, Ulrika Backman, Jorma Jokiniemi, Maija Lipponen, Riitta Zilliacus, Martin Kissane, Imre Nagy, Mihály Kunstár, Nóra Vér

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    This paper presents results from ruthenium release, transport and speciation experiments obtained in recent European studies. Experiments have shown that ruthenium may be released from the fuel already at a relatively moderate temperature, if the cladding is breached and if the flow contains oxygen. Furthermore, a significant fraction of released ruthenium is expected to be transported in the primary circuit in gaseous form. This work helps to resolve a severe accident safety issue related to fission product release in highly oxidising environment, which was indicated in the EURSAFE phenomena identification and ranking table (PIRT) [1]. Ultimately the goal of the ongoing projects is to improve modelling of ruthenium transport phenomena in severe accident codes such as ASTEC/Sophaeros
    Original languageEnglish
    Title of host publicationConference Proceedings
    Subtitle of host publicationInternational Conference Nuclear Energy for New Europe 2005
    Publication statusPublished - 2005
    MoE publication typeA4 Article in a conference publication
    EventInternational Conference Nuclear Energy for New Europe, NENE 2005 - Bled, Slovenia
    Duration: 5 Sept 20058 Sept 2005


    ConferenceInternational Conference Nuclear Energy for New Europe, NENE 2005


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