Abstract: In order to retrieve the waste from a waste pit with small opening, the silica sands packaged in a canvas bag was used to shield the intermediate level waste (ILW). The shielding depth was calculated with QAD-CG, and the filling and retrieve of silica sands was well prepared and practiced. The dose rate at the opening was reduced from 4.28 Gy/h to 4.49 μGy/h. The waste retrieve work went on smoothly. The personnel collective dose to set and dismantle the silica sands shielding facility is 0.45 men·mSv in total.

Key words: intermediate level radioactive waste pit, silica sand, shielding