Home / Standards / NB/T 20675-2023 NB/T 20675-2023 Active 压水堆核电厂主蒸汽管道泄漏监测系统设计准则 Standard Type NB ICS N/A CCS N/A Status Active Issue Date 2023-05-26 Implementation 2023-11-26 Centralized Committee 国家能源局 Issuing Authority 国家能源局