福州市装修花岗岩住宅的γ剂量率水平调查

Survey of Gamma Radiation Dose Rates in Dwellings Decorated with Granite Slabstone in Fuzhou

在 1 999～ 2 0 0 0年间 ,对福州市装修花岗岩石材的住宅进行 γ辐射剂量率水平的调查测量。共布设测点 1 87个 ,其中花岗岩装修的住宅测点 1 40个 ,其它建材装修的住宅测点 47个 ,采用 BH3 1 0 3 -A型便携式 X-γ辐射剂量率仪进行测量。结果表明 :用花岗岩石材装修的住宅 γ剂量率平均值 1 1 5 .5 n Gy/ h,用其它建材装修的住宅 γ剂量率平均值 99.7n Gy/ h。根据调查结果 ,对装修用花岗岩石材的选择进行了讨论。

A survey was made of gamma radiation dose rates in dwellings decorated with granite slabstone in urban area of Fuzhou city during time period 1999 2000 through 187 measuring points in which 140 were in granite decorated dwellings and remainder 47 with other decorating materials. Measurements were carried out by means of BH3103 A portable X γ radiation dose rate meters. The results show that the γ radiation dose rate in granite decorated dwellings was 115.5 nGy/h and the counterpart was 99.7 nGy/h. On the basis of the survey results, the use of granite slabstone in decorating dwellings was discussed.