Measurement and Analysis of Nuclide Lixiviate Rate of Radwaste Cement Solidification Sample

Based on the experiment of cement solidification thermal formula for radioactive spent colophony,residua and evaporation raffinate,the nuclide lixiviate rate of radwaste cement solidification samples are measured by HPGe-γ instrument,low background α and β measurement apparatus,and the nuclide lixiviate rate of radwaste cement solidification samples of different source terms are analyzed.It validates the accuracy and the reliability of the formula for the related cement solidification samples.The result shows that the nuclide lixiviate rate of ⁶⁰Co,¹³⁷Cs and total β in various cement solidification samples of colophony,residua and evaporation raffinate decrease acutely in front phase.The nuclide lixiviate rate changes steadily along with the time goes on.The value of nuclide lixiviate rate satisfies the requirement of GB 14569.1-93.