氡气无孔不入每年有3000加拿大人死于氡气引致的肺癌!
我不住地下室不过我也提醒大家不要杞人忧天。这个和地域有关,BC省测量sample点显示我们这里(大温地区)受氡气威胁不大。
Radon in B.C.
Radon sampling has been conducted in more than 22 B.C. communities to monitor radon concentrations and to identify radon-prone areas of the province.
Sampling results in the Interior and east of the Coast Mountain Range showed that between 5 to 40 per cent of dwellings may have radon levels of more than 200 Bq/m3, depending on the community. Elevated levels of radon were also found in the North. Coastal regions had fewer dwellings over 200 bq/m3.
大家感兴趣的话可以在下面搜索一下:
www.cbc.ca/news2/inter...in-canada/
1. Select BC
2. Check all the reported radon level boxes (including those acceptable ones)
3. Bear in mind, the threshold is 200BQ/M3, above it means Dangerous
结论:
a. 大家可以发现大温地区比较少hotspots. 不是说大温完全没有,但是绝大部分是安全的
b. 如果担心可以自己测量一下,有measuring kit
c. 住人地下室可能要多注意,不住人crawl space考虑封装 (就是整体密封)
最后祝大温同学身体健康!
补充一点: radon是无色无味的气体,如果有的话,不是说住地下室就有楼上就没有。建筑结构不能阻止radon扩散。我认为冬天是worst case scenario 因为冬天制热的时候热空气上升,radon正好趁势向楼上扩散,加上冬天一般都紧闭门窗,所以屋子里不管哪一层都是会受到威胁的,
别再说什么住地下室的要小心。地下室是源头而已。
