Static and cyclic crack growth of low alloy steels in high-oxygen water simulating HDR test conditions

Hannu Hänninen (Corresponding Author), Pertti Aaltonen, Rauno Rintamaa, Esko Arilahti, Ulla Ehrnsten

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    Steel samples of reactor pressure vessel and piping steels from the German HDR programme have been tested in high oxygen water at different temperatures simulating HDR test conditions. The specimens have been exposed to sequences of static and cyclic loading or to purely cyclic loading. During the tests, threshold stress intensity values for stress corrosion cracking and crack growth rates with various cyclic loading parameters were determined. Extensive fracture surface and oxide layer investigations were also performed. Water chemistry parameters such as dissolved oxygen content, pH and conductivity were continuously monitored during the tests. Finally, the measured laboratory water chemistry parameters were compared to those measured in the HDR plant during full scale testing of components and the relevance of the results for normally operating plants is discussed.
    Original languageEnglish
    Pages (from-to)291-304
    Number of pages14
    JournalNuclear Engineering and Design
    Volume137
    Issue number3
    DOIs
    Publication statusPublished - 1992
    MoE publication typeA1 Journal article-refereed

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