Presentation of NESSAT at IAEA’s IC on Safety of Radioactive Waste Management, Decommissioning, Environmental Protection and Remediation

At 7 November 2023, Ms. Aliki van Heek presented about the toolbox NESSAT for evaluating the long-term safety, environmental impact, and sustainability of nuclear energy systems, developed by Nuclear-21, for a 200-audience at the IAEA International Conference on the Safety of Radioactive Waste Management, Decommissioning, Environmental Protection and Remediation: Ensuring Safety and Enabling Sustainability at the IAEA Headquarters in Vienna. For this conference, specifically the NESSAT capabilities of determining the composition and decay heat generation of the nuclear waste, dimensioning of spent fuel cycle facilities and estimating the costs to be covered by waste funds were highlighted.

NESSAT is an integrated toolbox providing Nuclear-21 and its clients a unique set of tools to assess ‘from cradle-to-grave’ nuclear energy systems from simple cases up to the most complex multi-recycling fuel cycle scenarios involving different generations of nuclear reactors. It allos to answer in detailquestions as “What would be the fuel and waste management aspect for SMRs be?”, to “How to optimally manage the fuel cycle and particularly the spent nuclear fuel, e.g. pool/pad choices ?” or very hands-on questions regarding “How to desing an integrated waste management policy?”. A unique feature being the NROM (Nuclear Real Options Model) that allows to assess the decisional value for such decisional options and to address the questions when, what and how newbuild decisions and/or fuel and waste management options need to be executed to optimise objectives as minimal financial costs and risks (e.g. optimising asset liability management).

More information can be obtained via Aliki, Luc or via