Fission Gas Release in LWR Fuel Rods Exhibiting Very High Burn-Up

H. Carlsen

    Research output: Contribution to journalJournal articleResearchpeer-review


    Two UO2Zr BWR type test fuel rods were irradiated to a burn-up of about 38000 MWd/tUO2. After non-destructive characterization, the fission gas released to the internal free volume was extracted and analysed. The irradiation was simulated by means of the Danish fuel performance code WAFER-2, which uses an empirical gas release model combined with a strongly burn-up dependent correction term, developed by the US Nuclear Regulatory Commission. The paper presents the experimental results and the code calculations. It is concluded that the model predictions are in reasonable agreement (within 15%) with the experimental results. No similar agreement could be obtained without the burn-up dependency of the release model.
    Original languageEnglish
    JournalNuclear Engineering and Design
    Issue number1
    Pages (from-to)183-187
    Publication statusPublished - 1980

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