Standard Number: NB/T 20477.4-2018(NB/T20477.4-2018)
Chinese:核电厂用爆破阀 第4部分：驱动装置鉴定
English:Blast Valves for Nuclear Power Plants Part 4: Identification of Actuators
Effective Date:2018-09-01
Standard Applicability:This part specifies the qualification test prototype, qualification test requirements and its qualification criteria for the flux cylinder drive unit (hereinafter referred to as the drive unit). This part applies to the qualification of safety-related drives used in pressurized water reactor nuclear power plants. Other nuclear power drive device can be used for reference. This part does not include the qualification of electrical connectors and igniters.
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