Re-embrittlement of annealed pressure vessel, IAI1-material condition of a Loviisa irradiated weld

Matti Valo, Tapio Planman

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    2 Citations (Scopus)


    The re-irradiated (IAI1) material condition data of a VVER-440 weld, which is part of the contribution of Fortum Nuclear Services Ltd. to the IAEA research programme, are given in summary. The data were created with the lower half of the Loviisa NPP re-irradiation chain 12K3 using specimen reconstitution. The second re-irradiation fluence will be created with the upper half of the same chain later on. The tests include tensile tests, ISO Charpy-V impact tests, Charpy-V impact tests of 5 mm x 5 mm and 3 mm x 4 mm cross-sectional specimens and fracture toughness tests of 10 mm x 10 mm and 5 mm x 5 mm cross-sectional specimens. The baseline, I and IA-condition data have been reported earlier. The joint analyses of the test results including earlier Loviisa data as well as a short comparison to an irradiation in Halden are given.
    Original languageEnglish
    Title of host publicationPlant Life Management
    Subtitle of host publicationProgress for structural integrity
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    ISBN (Electronic)951-38-6281-X
    ISBN (Print)951-38-6280-1
    Publication statusPublished - 2003
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventPlant Life Management: Progress for structural integrity - Espoo, Finland
    Duration: 1 Jan 20021 Jan 2002

    Publication series

    SeriesVTT Symposium


    SeminarPlant Life Management


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