Reliable models for the behaviour of iodine in a reactor containment following a severe nuclear reactor accident are essential to predicting the potential release to the environment, and thus to developing and qualifying appropriate mitigation strategies and devices. Whilst most aspects of iodine chemistry are now adequately understood, particularly for PWR conditions, some outstanding issues remain. Firstly, some processes leading to the destruction of volatile forms of iodine are not well quantified. Improved knowledge of these destruction rates will allow their importance to be assessed, in terms of natural mitigation processes and accident management interventions. Secondly, effects on iodine behaviour of certain materials and conditions, specific to BWR systems, are unknown. Understanding these specific effects will allow data and models developed mainly for PWR systems to be applied with confidence to BWR source term predictions.
Funding SchemeCSC - Cost-sharing contracts
412 96 Göteborg
1755 ZG Petten
250 68 Rez - Praha