Intercomparison exercise on difficult to measure radionuclides in activated steel: statistical analysis of radioanalytical results and activation calculations

Anumaija Leskinen (Corresponding Author), Susanna Salminen-Paatero, Celine Gautier, Antti Räty, Merja Tanhua-tyrkkö, Pascal Fichet, Tommi Kekki, Wenzhong Zhang, Jacques Bubendorff, Elodie Laporte, Gabriel Lambrot, René Brennetot

    Research output: Contribution to journalArticleScientificpeer-review

    10 Citations (Scopus)

    Abstract

    This paper reports the results obtained during an intercomparison exercise for the determination of difficult to measure radionuclides in activated reactor pressure vessel (RPV) steel samples. In total, eight laboratories participated analysing 14C, 55Fe and 63Ni activity concentrations in RPV steel. In addition, some laboratories also analysed 60Co activity concentrations. Corresponding activity concentrations were also determined using activation calculations. Robust statistical techniques were utilised for the analysis of the results according to ISO 13528 standard. The results showed good agreement for 55Fe and 63Ni results whereas 14C results had significant differences. 60Co results were in quite good agreement.
    Original languageEnglish
    Pages (from-to)1303-1316
    JournalJournal of Radioanalytical and Nuclear Chemistry
    Volume324
    DOIs
    Publication statusPublished - 1 Jun 2020
    MoE publication typeA1 Journal article-refereed

    Funding

    Open access funding provided by Technical Research Centre of Finland (VTT). The authors would like to thank the Nordic Nuclear Research NKS-B programme (www.nks.org ) for funding the DTM Decom project in which the intercomparison exercise was carried out. The authors would also like to thank the other participating laboratories, namely Technical University of Denmark, Cyclife Sweden AB, Fortum Power and Heat Oy, IFE Kjeller and IFE Halden for provision of data and collaboration. National fundings were given by Finnish Research Programme on Nuclear Waste Management KYT 2022. The authors would also like to thank Fortum Power and Heat Oy for their collaborative actions.

    Keywords

    • intercomparison exercise
    • radioactive waste
    • reactor pressure vessel steel activation
    • ISO 13528

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