A state of the art report on the treatment technology of Kr/Xe

Krypton and xenon as inert gases were generated from OREOX process during the DUPIC manufacturing process. krypton and xenon were very sensitive to temperature. The release of krypton and xenon from spent fuel were increased with the increase of temperature and burn up, and with the decrease of initial porosity. The distribution radioactivity of gaseous waste generated from OREOX process is mainly attributed to krypton regardless of burnup and cooling time. Also, the radioactivity contribution of krypton is from 90 to 95% regardless of burnup and cooling time. Hence it is needed to understand the characteristics, treatment and disposal methods of krypton. This state-of-the-art-report describes characteristics, various treatment technologies, and disposal methods for krypton and xenon. This report also discusses the removal efficiency, safety, recycle and compatibility of zeolite applicable to the off gas treatment system for DUPIC process