Site risk analysis for nuclear installations: Nordic method developments and pilot studies

Jan-Erik Holmberg, Ola Bäckström, Erik Cederhorn, Carl Sunde, Tero Tyrväinen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    2 Citations (Scopus)


    Major part of the nuclear power sites house more than one reactor unit and other nuclear facilities such as spent fuel pool storage. Currently, multi-unit risks have not typically been adequately accounted for in risk assessments, since the licensing is based on unit-specific PSA with focus on a reactor accident. This paper presents an approach to site risk analysis, taking into account various dependences between the units. The dependences can be caused by external hazards, which can affect multiple units at the same time; shared op-erational and safety systems at the site; common staff who should manage the situations. The site risk as-sessment approach has been developed with aid of two pilot studies made for two Swedish sites. Preliminary results from the pilot studies are presented in the paper.
    Original languageEnglish
    Title of host publicationSafety and Reliability - Safe Societies in a Changing World - Proceedings of the 28th International European Safety and Reliability Conference, ESREL 2018
    Subtitle of host publicationProceedings of ESREL 2018, June 17-21, 2018, Trondheim
    EditorsCoen van Gulijk, Stein Haugen, Anne Barros, Jan Erik Vinnem, Trond Kongsvik
    Place of PublicationLondon
    PublisherCRC Press
    Number of pages8
    ISBN (Electronic)978-1-351-17466-4
    ISBN (Print)978-0-8153-8682-7
    Publication statusPublished - 17 Jun 2018
    MoE publication typeA4 Article in a conference publication
    EventEuropean Safety and Reliability Conference, ESREL 2018 - Trondheim, Norway
    Duration: 17 Jun 201821 Jun 2018


    ConferenceEuropean Safety and Reliability Conference, ESREL 2018


    • probabilistic safety assessment
    • multi-unit


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