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Chemistry and release of Radioistopes in LBE.

Aerts, Alexander; Gonzalez, Borja; Rijpstra, Kim; Lim, Jun; Rosseel, Kris; Marino, Alessandro; Manfredi, Gabriele; Gladinez, Kristof; Schuurmans, Paul.
GLANST-2017 - Global Symposium on Lead and Lead Alloy Cooled Nuclear Energy Science and Technology, Seoul, Korea, Democratic People's Republic of.

In safety assessments for licensing of LBE/Pb cooled ADS and FR, accurateprediction of retention of radionuclides by LBE/Pb is crucial. Recommended data in OECD handbook allow limited assessments only. SCK-CENs approach (MYTH model) allows global equilibrium analysis and has been very successful in several cases. But for a number critical radionuclides (e.g. polonium, iodine) the availability of fundamental data and understanding of mechanisms is still insufficient forquantitative predictions. Thermochemical (equilibrium) model needs coupling to system/CFD code Dedicated collaborative R&D programmes should be set up to fill the gaps.

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