Safety case methodology for nuclear waste disposal - possible update considerations for Finnish usage

Kari Rasilainen (Corresponding author), Heidar Gharbieh, Markus Olin, Marja Ylönen

    Research output: Book/ReportReport


    The report gives an introduction to the geological disposal of nuclear waste. In the licensing of nuclear waste disposal facilities, safety case is a widely used tool
    for the safety demonstration. Safety case methodology is described briefly
    touching e.g. its function and content. Three safety case references are
    discussed briefly, namely IAEA, OECD NEA and Posiva versions. Safety assessment methodology for nuclear power plants have been improved along lessons learned from nuclear accidents, e.g. at Fukushima. Current discussion in Finland is based on defence-in-depth philosophy, top-down approach, and views about system of systems. A Fukushima-inspired topic is institutional strength-in-depth. The aim of this report is to discuss whether these topics need to be transferred to nuclear waste management as well. Analysing safety case methodology vis-à-vis the four previous topics indicates that in principle all of them are already covered in safety case. However, the desired extent and depth of organisational analysis may require wider discussion in nuclear waste community. In current safety cases organisational questions are mostly discussed in scenarios and in the description of licence applicant's management system.
    Original languageEnglish
    PublisherVTT Technical Research Centre of Finland
    Number of pages41
    ISBN (Electronic)978-951-38-8719-3
    Publication statusPublished - 2019
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesVTT Technology


    • nuclear waste management
    • final disposal
    • long-term safety
    • Safety case
    • overall safety
    • Defence-in-depth
    • organisational aspects


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