Abstract: Shielding experiment devices were established for high activity disused radioactive sources conditioning study. The shielding performance of different types of Xinzhou sands with different particle size and different density as well as different water contents were studied for engineering application. The suitable sands were chosen for high activity disused radiation sources conditioning. Results show that the dose rate will be controlled below 0.03 mSv/h by using 150 cm Xinzhou water saturated sands for construction as shielding material while conditioning 1 000 Ci ⁶⁰Co radioactive source.

Key words: high activity, spent radioactive source, conditioning, shielding, sands, density