| Lu Xiaoguang,Ohtani Hiroki.Development and application of radiation shielding device for radiation survey detector[J].Chinese Journal of Radiological Medicine and Protection,2017,37(4):282-285 |
| Development and application of radiation shielding device for radiation survey detector |
| Received:October 13, 2016 |
| DOI：10.3760/cma.j.issn.0254-5098.2017.04.010 |
| KeyWords:Radiation level Fukushima Decontamination Radiation survey meter Radiation shielding |
| FundProject:山东省自然科学基金联合专项（ZR2015HL100） |
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| Abstract:: |
| Objective To develop the radiation shielding device for an environmental radiation survey meter with an aim to precisely measure local radiation levels and evaluate decontamination effectiveness in Fukushima.Methods A kind of lead alloy was selected as the main material for the shielding device. Attenuation effects of different lead plates and lead cylinders were measured at the radiation regulatory laboratory and in a polluted area of Fukushima, respectively. The whole shielding device was designed on the basis of measurement results, attenuation effects, cost of production and practicability. Results The whole device was composed of main shielding, probe shielding and a bracket with lid. The main shielding was a lead cylinder with 10 cm in height and 3 cm in thickness. The probe shielding was a lead cylinder with 8 cm in height and 2 cm in thickness. The thickness of lid was 1 cm. Conclusions The device can be available to effectively shield the influence of ambient radiation and accurately measure local radiation levels and evaluate decontamination effectiveness. It can play a valuable part in post-disaster reconstruction of contaminated areas in Fukushima. |
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