Initial nuclear state characterization in view of decommissioning STRATEGIST, a data analysis & sampling design web tool

Sven Boden, Bart Rogiers, Yvon Desnoyers, Nadia Pérot, Gunhild Von Oertzen, Oleksandr Sevbo, Séverine Demeyer

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The INSIDER project (2017-2021, (LGI, 2017)) developed and validated a new and improved integrated characterisation methodology and strategy during nuclear decommissioning and dismantling operations (D&D) of nuclear power plants, post-accidental land remediation or nuclear facilities under constrained environments. One of the important outcomes of this strategy development is a statistical approach guideline, that is transformed into a web tool, which serves as a more user-friendly interactive interface. The web tool, named STRATEGIST (Sampling Toolbox for Radiological Assessment To Enable Geostatistical and statistical Implementation with a Smart Tactic), intends to guide the expert in handling the problem definition and applying a strategy based on proper data analysis and sampling design. It is not meant to provide the nonspecialist with a comprehensive mode of operation for the complete process of initial nuclear state characterisation in view of decommissioning. This paper describes the approach followed to develop the guideline and STRATEGIST web tool, based on state-of-the art statistical techniques for preliminary analysis and data processing. Furthermore, it briefly outlines the web tool contents and structure. The initial guidance was adjusted and finalized, based on its implementation into four different use cases, which are concisely summarized as well. Lessons learnt from this implementation are listed in terms of overall strategy implementation, selection of sampling approaches and data analysis methods and are complemented with a specific focus on uncertainties. They illustrate that the implementation of a proper data analysis and sampling design strategy simplifies and optimizes the decision making process concerning the selection of the different D&D scenario options.
Original languageEnglish
Title of host publicationDEM 2021. International Conference on Decommissioning Challenges: Industrial Reality, Lessons learned and Prospects (DEM 2021)
Subtitle of host publication13-15 Sep 2021, Avignon, France
Place of PublicationFrance, Avignon
PublisherENS - European Nuclear Society
Number of pages12
StatePublished - 15 Sep 2021
Event2021 - DEM - International Conference on Decommissioning Challenges: Industrial Reality, Lessons Learned and Prospects - Avignon
Duration: 13 Sep 202115 Sep 2021


Conference2021 - DEM - International Conference on Decommissioning Challenges: Industrial Reality, Lessons Learned and Prospects

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