Fatigue behaviour of 316 NG stainless steel in EPR primary circuit conditions

Jussi Solin, Päivi Karjalainen-Roikonen, Esko Arilahti, Pekka Moilanen

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


    Strain controlled constant amplitude and variable amplitude fatigue tests were performed for 316 NG stainless steel in PWR water 320 C. The environment reduced fatigue life as predicted. Variable amplitude test results indicate a further reduction in life by a factor of 5, which is greater than expected. Variable amplitude straining in EPR environment resulted to specimen failure before the fatigue usage factor according to the ASME III design curve reached unity. In other words, the ASME III design curve was conservative for constant amplitude, but non-conservative for variable amplitude straining in environment. Critical tests to confirm or replace this tentative observation are recommended.
    Original languageEnglish
    Title of host publicationSAFIR, The Finnish Research Programme on Nuclear Power Plant Safety 2003 - 2006
    Subtitle of host publicationInterim Report
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    ISBN (Electronic)951-38-6516-9
    ISBN (Print)951-38-6515-0
    Publication statusPublished - 2004
    MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

    Publication series

    SeriesVTT Tiedotteita - Research Notes


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