中文摘要：

使用RAD7测氡仪对某高氡浓度实验室进行排风和密闭两种不同条件下氡浓度测量,并进行氡及其子体所致有效剂量估算和评价.结果表明：在没有排风条件下,含有氡产生源的密闭房间内氡浓度处于极高状态,氡及其子体所致有效剂量远远高于国际放射防护委员会所建议剂量限值;进行排风5h后,该环境中氡浓度可降至较低状态,氡及其子体所致有效剂量也降至上述限值.

英文摘要：

RAD7 radon measurement instrument was used for measuring radon concentration of certain laboratory with high concentration of radon by exhausting air of the laboratory and by closing the one, meanwhile, the esti- mating and assessing for effective dose intake from radon and its progeny were accomplished. It turned out that the radon concentration of enclosed room with radon generation source but without exhaust kept on high level, which resulted in much more effective dose intake from radon and its progeny than the maximal one suggested by The International Commission on Radiological Protection（ICRP）. After the air of laboratory exhausted 5 mi- nutes, the radon concentration would be much smaller, and effective dose intake would be also smaller than the one suggested by ICRP.