Natural radioactivity of wastes

摘要: By-products of the combustion coal (wastes) are often used for various types construction (dwellings, roads, etc.). The legal regulations (The Ordinance Council Ministers 2 January 2007 "On requirements content natural radioactive isotopes potassium K-40, radium Ra-226 and thorium Th-228 in raws materials buildings residence people livestock, as well industrial by-products construction, control aforementioned isotopes" - Law Gazette no. 4/2007 item 29) force Poland. permit possibility utilization basing upon level radioactivity examined materials. article is a survey results obtained during measurements many building almost 30 years by network laboratories It based stored database Central Laboratory Radiological Protection (CLRP), Warsaw. tends to outline waste with respect other industry. shows possibilities use originating power stations heat- (mainly ashes, slag hinter) dwellings roads.