CAJ | 학술논문

目的为估算艇员内照射剂量和评价吸入危害防护提供参数。方法用DK-2A空气采样器在艇内各舱室采样，通过α、β放射性计数测量并计算艇内放射性气溶胶的浓度，使用WM—2型级联撞击器测定了艇内Ⅲ舱和Ⅴ舱的放射性气溶胶粒度分布。结果潜艇水下航行时，艇内的放射性气溶胶逐渐升高；气溶胶粒度的活度中值空气动力学直径(AMAD)的平均值是(0.22±0.02) μm；几何标准偏差的平均值是(2.57±0.25)。结论潜艇水下航行的时间是影响艇员内照射剂量的重要因素；气溶胶粒度的谱型是由小粒子占优势的分布较窄的多分散相；气溶胶的粒度分布与其浓度的变化无关。
목적위고산정원내조사제량화평개흡입위해방호제공삼수。방법용DK-2A공기채양기재정내각창실채양，통과α、β방사성계수측량병계산정내방사성기용효적농도，사용WM—2형급련당격기측정료정내Ⅲ창화Ⅴ창적방사성기용효립도분포。결과잠정수하항행시，정내적방사성기용효축점승고；기용효립도적활도중치공기동역학직경(AMAD)적평균치시(0.22±0.02) μm；궤하표준편차적평균치시(2.57±0.25)。결론잠정수하항행적시간시영향정원내조사제량적중요인소；기용효립도적보형시유소입자점우세적분포교착적다분산상；기용효적립도분포여기농도적변화무관。
Objective　To estimate the internal exposure dose and the inhalation risk of radioactive aerosol to the submariners and offer some health protection parameters for the designing of new type submarine. Methods　Air samples from the submarine cabins were taken by DK-2A air sampler and the concentrations of the radioactive aerosol were measured by means of α、β radioactive counting; and the particle size distribution of the radioactive aerosol in the Ⅲ and Ⅴ cabins were determined by the WM-2 cascade impactor. Results　The concentration of the aerosol increased progressively in the submarine during under sea navigation. The mean particle size of the aerosol′s activity medium aerodynamic diameter(AMAD) was (0.22±0.02) μm and that of geometric standard deviation(σg) was(2.57±0.25). Conclusions　The navigatation time of submarine under sea is the main factor influencing the internal exposure dose of the submariners. The aerosol particle spectrum is consisted of some dispersed phases of small size particle whose distribution is narrow and is hazardous for inhalation. There is no relation ship between the particle size distribution of the aerosol and its concentration change.