Contamination Control by Green-House for Emergency MedicalTreatment of the Contaminated Patient

At emergency medical treatment of patients contaminated with radioactivity, air contamination control is very important for preventing the secondary contamination of medical staffs. In order to optimize a design of green-house, numerical analysis was made by using the computer software "Flow Designer". As scenario to make air contamination, the breathing air of patient was assumed to be highly contaminated with radioactive gaseous or particulate matter. It was found that air contamination strongly depended on the characteristics of the contaminants. Contamination map of the coarse aerosols with low diffusivity was quite different from those of the fine aerosols and gas. If the setting conditions of air flow rate of the ventilation and the exhausting position were optimized, the secondary contamination of the medical staffs standing by the patient would be prevented securely by green-house.AOCRP-