Journal of environmental and Sanitary engineering (환경위생공학)

Korean Society for Environmental Sanitary Engineers (대한환경위생공학회)
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Decontamination of Simulated Test Piece by Dry Ice Pellet Blasting

드라이아이스 펠렛 분사에 의한 모의 시편의 제염

  • 신진명 (한국원자력연구소 고방사성핵물질 처리기술개발) ;
  • 박장진 (한국원자력연구소 고방사성핵물질 처리기술개발) ;
  • 양명승 (한국원자력연구소 고방사성핵물질 처리기술개발)
  • Published : 2004.06.01
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Abstract

Dry decontamination technique is required for maintaining nuclear material handling equipment contaminated with highly radioactive material in a hot cell. In order to determine the optimum blasting conditions of dry ice pellet blasting device, the basic experiments have been conducted on the simulated test specimens of four types of metals. The removal efficiency of test piece was evaluated by the XRF analysis and the change of the surface condition before and after blasting. The removal efficiency of cesium on loose contamination was 100% under blasting pressure; 3 kg/$cm^2$, blasting distance; 10 cm, blasting time: 10 sec. In case of fixed contamination, the removal efficiency of cesium was almost 96% under blasting pressure; 4kg/$cm^2$, blasting distance; 10 cm, blasting time; 30 sec.

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References

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