基于FPGA的核电DCS功能安全与可靠性评估

Functional Safety and Reliability Evaluation Method for Nuclear Power DCS Based on FPGA

探讨了一种基于FPGA技术的核电DCS 2oo4架构系统开展功能安全与可靠性评估方法。运用FMEA技术识别系统级、模块级关键故障模式,针对危险失效模式采取诊断或控制措施,改善和提高核电DCS产品的安全性和可靠性。采用FMEDA技术定量分析模块级产品的平均故障间隔时间及安全失效分数。实验测试结果表明,该方法已在某安全级DCS平台功能安全SIL3认证中得到了充分的应用与验证,同时也为同行业核电DCS系统功能安全认证及可靠性评估提供了参考。

A method of functional safety and reliability evaluation for nuclear power DCS 2oo4 architecture system based on FPGA technology is discussed.Using FMEA technology to identify system and module critical failure modes,taking diagnostic or control measures for hazardous failure modes,and improving and enhancing the safety and reliability of nuclear power DCS products.The FMEDA technology is used to quantitatively analyze the mean time between failures and safe failure scores of module products.The experimental test results show that this method has been fully applied and verified in the functional safety SIL3 certification of a safety related DCS platform,and also provides a reference for the functional safety certification and reliability evaluation of nuclear power DCS systems in the same industry.