Swedjemark G A, Mäkitalo A
Swedish National Institute for Radiation Protection, Stockholm.
Health Phys. 1990 Apr;58(4):453-60. doi: 10.1097/00004032-199004000-00007.
Swedish local authorities are responsible for decreasing 222Rn progeny concentrations in homes in their municipalities. To obtain an overall view of their experiences, concerned national authorities sent a questionnaire in 1986 to local authorities. The results were intended to form one basis for decisions by the government regarding revised statements on financial contributions, limits, etc. The results were also intended to be of use to national authorities in determining limits and recommendations and to local authorities in their field work. One result of the survey was an enhanced interest in the Rn problem among Swedish politicians and the mass media. This increased attention resulted in new plans for continued work to decrease Rn levels indoors during 1987-1989, on both a national and a local level. The experiences of the local authorities show that Rn progeny concentrations decreased to below the design level in 95% of newly built houses investigated. It was also found that Rn progeny concentrations were below the limit for reconstruction in 53% of existing homes that previously had levels exceeding the limit.
瑞典地方当局负责降低其辖区内家庭中的222Rn子体浓度。为全面了解他们的经验，相关国家当局于1986年向地方当局发送了一份调查问卷。结果旨在作为政府就财政资助、限值等修订声明做出决策的一个依据。这些结果还旨在供国家当局确定限值和建议以及供地方当局开展实地工作时使用。该调查的一个结果是瑞典政界人士和大众媒体对氡问题的兴趣增强。这种关注度的提高促成了在1987 - 1989年期间在国家和地方层面继续开展降低室内氡水平工作的新计划。地方当局的经验表明，在所调查的新建房屋中，95%的房屋内氡子体浓度降至设计水平以下。还发现，在之前氡子体浓度超过限值的现有房屋中，53%的房屋内氡子体浓度低于重建限值。
