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Iodine chemistry and mitigation methods

Objective

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 Scheme

CSC - Cost-sharing contracts

Coordinator

AEA TECHNOLOGY PLC
Address
Winfrith Technology Centre
DT2 8DH Dorchester - Dorset
United Kingdom

Participants (6)

CHALMERS UNIVERSITY OF TECHNOLOGY
Sweden
Address
4,Kemivägenl Liason Office Cth 4
412 96 Göteborg
COMMISSION OF THE EUROPEAN COMMUNITIES
Netherlands
Address
Westerduinweg 3
1755 ZG Petten
FRAMATOME ANP GMBH
Germany
Address
Freyeslebenstrasse 1
91058 Erlangen
INSTITUT DE RADIOPROTECTION ET DE SURETE NUCLEAIRE
France
Address
77/83 Av. Du General De Gaule
92140 Clamart
NUCLEAR RESEARCH INSTITUTE REZ A.S.
Czechia
Address

250 68 Rez - Praha
PAUL SCHERRER INSTITUT
Switzerland
Address

5232 Villigen