Comparison on leaching mechanism of 137Cs and 60Co from the paraffin waste form

The incorporation ratio wt% of paraffin waste form was boron waste/paraffin=3.3:1, such as to domestic NPP. Using several specimens with different diameters and heights, 50/50mm, 80/80mm specimens. The leach ant shall be demineralized water and sea-water, Leachi ng rates of cesium and cobalt were measured. in accordance with IAEA standard leach test procedure for 246 days. Using the tracers are 60Co and 137Cs. The radioactivity initially present in specimens are 60Co : 38.47, 37.37μCi and 137Cs :13.56, 14.75μCi. The experiment result showed that the paraffin waste form of leaching rates are large more than the cement waste form. The cumulative fraction leached of seawater were cobalt is 0.067 and cesium 0.1062. The cumulative fraction leached of demi-water were cobalt is 0.1171 and cesium 0.1739. As test result, The cumulative fraction leached of demi-water are increased more than seawater. increase of diameter, The showed that the CFLs were decreased