NB/T 20475-2017.Qualification and acceptance of boron based metallic neutron absorbers for nuclear criticality control for dry cask storage systems an

NB/T 20512.1-2018.Operating licenses extension of nuclear power plant-Part 1:Screening of aging management review and identification of time-limited a

NB/T 20447-2017RK.Overpressure protection of low pressure systems connected to the reactor coolant pressure boundary. 1范围 NB/T 20447规定了压水堆核电厂中与反应堆冷却剂压

NB/T 20451-2017.General requirements of construction informatization management for nuclear power project. 1范围 NB/T 20451规定了核电工程施工信息化管理的通用要求，包括施工信息化要求

NB/T 20452-2017.Technical regulations of safety management in nuclear power engineering. 1范围 NB/T 20452规定了核电工程建设项H实施过程中应执行的安全管理技术要求。 NB/T 20452适用于核电工程

NB/T 20453-2017.Technical regulation for installation of primary reactor coolant piping in passive pressurized water reactor nuclear power plant. 1范围

NB/T 20457-2017.Technical specification for steel containment vessel components manufacturing and acceptance in passive pressurized water reactor nucl

NB/T 20430-2017.Technical regulations for installation of reactor head structure in passive pressurized water reactor nuclear power plant. 1范围 NB/T 20

NB/T 20437-2017.Specification for test of concrete in nuclear power engineering. 1范围 NB/T 20437规定了核电工程建造过程中混凝上拌合物检验方法、混凝:上力学性能检验方法、混凝上长期性和耐久性检测方法、混凝上热

NB/T 20444-2017RK.Analysis criterion of the design basis accident source terms for pressurized water reactor nuclear power plant. 1范围 NB/T 20444规定了新建压