Home / Standards / GB 4075-2009 GB 4075-2009 Active Sealed radioactive sources - General requirements and classification 密封放射源 一般要求和分级 Standard Type GB ICS 13.280 CCS F70 Status 现行 Issue Date 2009-03-13 Implementation 2010-03-01 Responsible Dept 生态环境部 Drafting Unit N/A