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软件失效及软硬件交互故障是核电厂全数字化仪控系统故障的主要来源之一。现有基于硬件的状态监测机制应对这一新型失效模式存在不足。应用系统理论事故建模与处理(STAMP)模型,对核电厂全数字化仪控系统的失效模式进行初步分析,提出将软件、硬件及其交互作为监测对象,建立一种整合软、硬件状态的全状态监测机制,为系统状态监测提供多样性及预警能力,对提高核电厂数字化仪控系统的安全性具有重要意义。
Software failure and interactive hardware and software failures is one of the main sources of failure of a fully digital instrumentation control system in a nuclear power plant. Existing hardware-based stateful monitoring mechanisms address this new failure mode. Based on STAMP model, the failure modes of all-digital instrument control system in nuclear power plant are analyzed preliminarily. The software, hardware and their interaction are taken as the monitoring object, and a complete software and hardware state is established Condition monitoring mechanism, which provides diversity and early warning capability for system condition monitoring, is of great significance to improve the safety of nuclear power plant digital instrument control system.