Home / Standards / NB/T 20115-2012 NB/T 20115-2012 Abolished 压水堆核电厂堆顶结构安装施工技术规程 Standard Type NB ICS N/A CCS N/A Status Abolished Issue Date 2012-01-06 Implementation 2012-04-06 Centralized Committee 国家能源局 Issuing Authority 国家能源局