초록 ▼

1. 연구개발목표 및 내용
- 우라늄변환시설 해체 전 설비 내부 표면제염과 해체 후 부품 오염표면 제염기술개발
- 우라늄변환시설 우라늄슬러시 처리 기술 개발
- 토양 제염 기술 사업적용 기술개발 및 국내 토양제염 기술기반 구축
- 토양, 우라늄 슬러지 폐기물 최적 고정화 방안 도출 및 KAERI 오염 토양 및 우라늄 슬러지 폐기물의 방사성 물질 제염 후 자체처분을 위한 안전성 평가 방법론 개발
2. 연구결과
- 상온의 온화한 화학제 조건을 갖는 제염 공정 및 자체처분 수준의

1. 연구개발목표 및 내용
- 우라늄변환시설 해체 전 설비 내부 표면제염과 해체 후 부품 오염표면 제염기술개발
- 우라늄변환시설 우라늄슬러시 처리 기술 개발
- 토양 제염 기술 사업적용 기술개발 및 국내 토양제염 기술기반 구축
- 토양, 우라늄 슬러지 폐기물 최적 고정화 방안 도출 및 KAERI 오염 토양 및 우라늄 슬러지 폐기물의 방사성 물질 제염 후 자체처분을 위한 안전성 평가 방법론 개발
2. 연구결과
- 상온의 온화한 화학제 조건을 갖는 제염 공정 및 자체처분 수준의 제염성능을 갖는 저농도 우라늄 오염표면 화학제염 공정 장치와 해체 후 부품에 대한 중성염 전해제엽 공정 장치개발
- 80%이상 감용할 수 있는 물첨가 슬러지분러기술 개발 및 실험실적 입증 (슬러지 분리 효율 : 80%이상, 용해용 물 첨가율 : 250%)
- 전기흡착법에 의한 우라늄슬러지처리 신공정개발 및 우라늄 제염효율 1ppm이하 성능 입증
- 토양폐기물의 90%이상을 감용할 수 있는 토양제염 기술 및 공정장치 개발
- 토양 및 우라늄 폐기물 방사성폐기물 고정화 기술 시험평가 및 최적 고정화방안 도출
- 자체처분 안전성 시나리오 및 안전성평가 모델개발
3. 기대효과 및 활용방안
원자력연구소 변환시설 환경복원사업 및 토양제염 사업과 연계하여 기술개발을 추진하였으며, 인허가 및 해체설계에 이미 연구결과가 활용되었고 '04년부터 시작되는 해체사업에 직접 적용
- 원(연) 우라늄변환시설 환경복원 사업 기술로 활용
- 원(연) 방사성토양페기물 제염사업 기술로 활용

Abstract ▼

1. Technology Development for the Decontamination of a Retired Uranium Conversion Facility
Contamination characteristics on the equipment surface in the uranium conversion facility were investigated. Decontamination tests applicable to the eqipment surface were performed as a laboratory scale. Th

1. Technology Development for the Decontamination of a Retired Uranium Conversion Facility
Contamination characteristics on the equipment surface in the uranium conversion facility were investigated. Decontamination tests applicable to the eqipment surface were performed as a laboratory scale. The inorganic decontamination process was established through the systematic tests using specimens gathered from the urnium conversion facility. Technological and economical feasibilities were proved through the design, fabrication and demonstraction tests of the pilot scale decontamination equipment. As a component decontamination technology after decommissioning of the nuclear facility, the applicability and the decontamination performances of the electro-polishing technology were also evaluated through demonstration tests using the neutal salt solutions
2. Technlogy Development for the Treatment of Uranium Sludge Wastes
The characteristics of sludge were investigated and the concept of the treatment process was defined for the development of the sludge treatment technology. The detail concept of sludge waste separation and solid waste stabiization processes were establishedm and the property tests of each unit process were carried out and the optimum conditions cold be obtained. The process properties were found out with the equipments on a bench scale and the sludge waste separatio and the solid waste stabilization processes were established. A study on the electrosorption of U(VI) onto a porous activated carbon fibers (ACFs) was performed to selectively remove the uranium in uranium-containing liquid waste resulting from liquidsolid separation of sludge waste. The optimum conditions for selective removal of uranium could be obtained. On the basis of these results, the equipments on a demonstration scale was fabricated and the electrosorption performance was evaluated to develop the treatment process applicable to uranium-cotaining lagoon sludge waste.
3. Technology Develpment for the Decontamination of Soil Wastes
A soil decontamination process diagram was developed and a soil decontaminaion equipment was manufactured on the basis of grasp of contamination characteristics and results of complex process experiment. The chemical agent which can remove main contaminant, cesium and cobalt, from soil at the maximum was selected. Then, decontamination experimental condition, regeneration condition of decontamination agent and purification method of decontamination liquid waste were proposed. Unit parts of the manufactured piot size f soil decontamination equipment were as follows,
. Soil sieving equipment and soil washing equipmen
. Soil input equipment and contaminated dust extraction equipment
. Rapid precipitation tank
. Hydrocyclone
. Soil radiation detection system
. Soil wastewater recycling equipment
The manufactured pilot sizeof soil decontamination equipment was given a trial run and a capacity experiment, demonstration of decontamination technology was executed, and economical efficiency/mass balance was analyzed.
. Analysis on decontamination efficiency of radioactive contamination soil
. Analysis on economical efficiency of soil decontamination technology and suitability of project application wth actual size
. Analysis on mass balance of soil decontamination

목차 Contents

• 제1장 서론...50
• 제2장 국내.외 기술 개발 현황...56
• 제1절 우라늄 변환시설 제염 기술 개발...56
• 제2절 우라늄슬러지 처리기술...71
• 제3절 토양폐기물 제염공정 개발...125
• 제4절 토양.우라늄 폐기물 고정화 및 자체처분 안전성 평가 기술 개발...126
• 제3장 연구개발 수행 내용 및 결과...132
• 제1절 우라늄변환시설 제염기술 개발...132
• 제2절 우라늄 슬러지 처리기술 개발...207
• 제3절 토양폐기물 제염공정 개발...355
• 제4절 토양.우라늄폐기물 고정화 및 자체처분 안전성 평가기술 개발...528
• 제4장 연구개발 목표달성도 및 대외기여도...608
• 제1절 연구개발 목표달성도...608
• 제2절 대외기여도...610
• 제5장 연구개발 결과의 활용계획...612
• 제6장 참고문헌...614