Pages 279-280
Polonium issue is an important problem when Lead-Bismuth Eutectic (LBE) is used in fast reactors or in accelerator driven sub-critical systems. Some experiments were performed to remove contamination of polonium from neutron irradiated LBE. Baking in vacuum condition was performed for contaminated quartz glass plates. When baking temperature was equal or above 400℃, most of polonium was removed with other materials on the glass. When baking temperature was 300℃, only polonium was removed without removing other materials on the glass. No effect was observed when baking temperature was 200℃. This means there is a possibility that if the baking is performed for polonium contaminated materials at 300℃, only polonium can be removed without removing other non-radioactive materials.
