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NKS Programme Area:
NKS-R
Research Area:
Severe accidents and Reactor Physics
Report Number:
NKS-25
Report Title:
Gas Phase Chemistry and Removal of CH3I during a Severe Accident
Activity Acronym:
SOS-2.3
Authors:
Anna Karhu
Abstract:
The purpose of this literature review was to gather valuable information on the behavior of
methyl iodide on the gas phase during a severe accident. The potential of transition metals,
especially silver and copper, to remove organic iodides from the gas streams was also
studied. Transition metals are one of the most interesting groups in the contex of iodine
mitigation. For example silver is known to react intensively with iodine compounds. Silver
is also relatively inert material and it is thermally stable. Copper is known to react with
some radioiodine species. However, it is not reactive toward methyl iodide. In addition, it is
oxidized to copper oxide under atmospheric conditions. This may limit the industrial use of
copper.