Steven Joyce

Dr Steven Joyce has over 20 years of experience supporting radioactive waste management organisations in their evaluation and assessment of the suitability of sites for the safe geological disposal of radioactive waste. His work has focussed on the safety performance of the geological, hydrogeological and hydrogeochemical environment and how it evolves over time. He is an expert in the integration of information from multiple disciplines necessary to form a conceptual understanding of the site and a quantification of its long-term performance.

Steven was a contributor to both the Swedish and Finnish safety assessments for their long-term geological repositories for spent nuclear fuel at Forsmark and Olkiluoto, respectively. His work for over 15 years on these programmes was primarily focussed on developing the understanding of the hydrogeology of the fractured crystalline host rocks and developing numerical models to quantify the behaviour and evolution of the groundwater system. This included working with subject matter experts in different disciplines (e.g. geology, hydrogeology, hydrogeochemistry, hydrology, rock mechanics, climatology) to build consistent models of the system behaviour.

Steven also has extensive experience of the geology and hydrogeology of West Cumbria due to his work for the Sellafield, Moorside and LLWR sites. This work has involved developing the conceptual and numerical models for these sites, quantifying uncertainty and carrying out calculations for the transport of contaminants.

Steven is an expert numerical modeller, including many years experience managing and developing hydrogeological and hydrogeological modelling tools. Work has included developing groundwater flow and transport modelling methodologies for Nuclear Waste Services (NWS) in the UK as part of their performance assessment workflow.

Throughout his work Steven has worked closely with clients and their supply chain to ensure work is well coordinated, integrated and delivered to a high quality. Good communication and knowledge transfer have been key to the success of his projects.