从辐射和化学危害角度分别计算铀浓缩设施工作场所空气中UF_6的导出空气浓度,以指导企业对工作场所空气中铀气溶胶浓度进行合理控制。结果显示,长期慢性吸入UF_6(<8.5%)和天然铀的工作场所,空气中UF_6浓度控制在40μg/m3以内时,可以满足辐射危害和化学危害控制的要求。长期慢性吸入UF_6(>8.5%)的工作场所,空气中UF_6浓度限值以辐射危害导出限值来控制,应控制在5μg/m3以内。 Derived from the perspective of radiation and chemical hazards were calculated uranium enrichment facilities in the workplace air UF_6 derived air concentration to guide enterprises in the workplace air uranium aerosol concentration control. The results show that long-term chronic inhalation of UF_6 (<8.5%) and natural uranium in the workplace, the air UF_6 concentration control 40μg / m3 or less, to meet the radiation hazard and chemical hazard control requirements. Long-term chronic inhalation of UF_6 (> 8.5%) of the workplace, the concentration of air UF_6 limit the radiation hazard control limit should be controlled within 5μg / m3.