Design, application and maintenance of HTR-10 full digital safety I&C system

The safety instrumentation and control (I&C) system of the 10MW High Temperature Gas-cooled Reactor (HTR-10) is the key system referred to the safety of the reactor. It is designed based on the advanced digital control techniques. This article introduced its architecture, configuration, design feature and engineering application in commissioning and operation of HTR-10. This article also summaries the experiences in routine test and maintenance. Engineering applications and maintenance practices effectively validate its security, stability and reliability.