Home / Standards / GB/T 12951-2009 GB/T 12951-2009 Active Americium-241 alpha sources for ionization smoke fire detectors 离子感烟火灾探测器用镅241α放射源 Standard Type GBT ICS 13.030.30 CCS F51 Status 现行 Issue Date 2009-03-13 Implementation 2010-03-01 Responsible Dept 国家标准委 Drafting Unit N/A