Home / Standards / GB 27742-2011 GB 27742-2011 Active Activity concentration for material not requiring radiological regulation 可免于辐射防护监管的物料中放射性核素活度浓度 Standard Type GB ICS 17.240 CCS F70 Status 现行 Issue Date 2011-12-30 Implementation 2012-12-01 Responsible Dept 生态环境部 Drafting Unit 生态环境部