大亚湾核电站堆芯参数测量（RIC）系统的国产化改造

RIC（堆芯测量）系统是核电站的重要测控系统之一，其部分功能是在KIT（集中数据采集处理）系统中实现的。大亚湾核电站近期对其原有KIT系统进行了全面的国产化升级改造，与之关联的RIC系统也同时进行了改造。该文介绍RIC系统的技术改造方案、构成和配置、工作原理和主要功能，着重描述了核反应堆中子注量率的采集和数据处理过程。使用效果表明，新RIC系统的技术指标完全满足工艺要求。

Localized Transformation of RIC System in Daya Bay Nuclear Power Plant

The RIC （Reactor In-core）system is one of the important measurement and control systems at a nuclear power plant, and its partial functions are implemented in the KIT （centralized data acquisition and processing） system. Recently, the original whole KIT system has been domestically innovated as well as upgraded, and meanwhile, the related RIC system has also been rebuilt by Daya Bay Nuclear Power Plant. The paper deals with the technical innovation scheme, composition and configuration, working principles and main functions of the RIC system, with an emphasis on describing the procedures of neutron flux acquisition and data processing in the nuclear reactor. The application effect shows that the technical specifications of the RIC system can satisfactorily meet the technological requirements.