3 research outputs found

    Use of a big data analysis technique for extracting HRA data from event investigation reports based on the Safety-II concept

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    The safe operation of complex socio-technical systems including NPPs (Nuclear Power Plants) is a determinant for ensuring their sustainability. From this concern, it should be emphasized that a large portion of safety significant events were directly and/or indirectly caused by human errors. This means that the role of an HRA (Human Reliability Analysis) is critical because one of its applications is to systematically distinguish error-prone tasks triggering safety significant events. To this end, it is very important for HRA practitioners to access diverse HRA data which are helpful for understanding how and why human errors have occurred. In this study, a novel approach is suggested based on the Safety-II concept, which allows us to collect HRA data by considering failure and success cases in parallel. In addition, since huge amount of information can be gathered if the failure and success cases are simultaneously involved, a big data analysis technique called the CART (Classification And Regression Tree) is applied to deal with this problem. As a result, it seems that the novel approach proposed by combining the Safety-II concept with the CART technique is useful because HRA practitioners are able to get HRA data with respect to diverse task contexts

    The contribution of creativity of action to safety: the key role of requisite imagination

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    International audienceThe aim of this paper is to show that requisite imagination by designers and more broadly by all workers – the ability to wonder and imagine key aspects of the future we are planning/designing – can be considered as a manifestation of creative action in organization and should be encouraged. We conducted an intervention in a nuclear power plant facing with a new nationwide policy seeking to extend the lifespan of nuclear facilities through important alterations. The first alteration made turned out badly, due to poor anticipation and a focus on technical effects, whilst organizational aspects were largely excluded. We decided to facilitate the conduct of a collective inquiry with the stakeholders involved with these ongoing evolutions, to discuss organizational design and stimulate requisite imagination. We discuss our main finding from three perspectives: theoretical, methodological and practical
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