Decontamination and decommissioning project for the nuclear facilities

The decommissioning work which begin in latter half of 2001 was gone well in latter half of 2002. Now, 8 laboratories, 10 lead hot cells, and 2 concrete hot cells was dismantled. Wastes produced by decommissioning process were classified with three category. The decontaminatable wastes in the solid radioactive ones will be changed with free release ones. For this, we developed cylindrical rotating pipe decontamination units, ultrasonic ones, and steam jet ones. Test of these units was started in 2002 and they will be using decontamination work in 2003. According to regulation of atomic act 55, the Decommissioning Plan and Environmental Impact Assessment for uranium conversion plant were written out and presented. Basic research for metal wastes decontamination and research for lagoon sludge treatment was carried out.