safety-related functions meaning in English

Safety - related functions
相关安全功能
Qualification of actuators for power - operated valve assemblies with safety - related functions for nuclear power plants
对核电站用有安全功能的电动阀组驱动器的鉴定
Actuators for power - operated valve assemblies with safety - related functions for nuclear power - plants , qualification of
核电厂用带安全相关功能的电力操作阀组件的执行机构的合格鉴定