Home / Standards / NB/T 20046-2011 NB/T 20046-2011 Abolished 压水堆核电厂蒸汽发生器安装及验收技术规程 Standard Type NB ICS N/A CCS N/A Status Abolished Issue Date 2011-07-01 Implementation 2011-10-01 Centralized Committee 国家能源局 Issuing Authority 国家能源局