ACP100安全级DCS爆破阀控制系统分析

Analysis of ACP100 Safety DCS Squib Valve Control System

爆破阀是ACP100自动卸压系统中的关键设备。爆破阀的安全级控制系统能否安全、可靠地执行安全功能与ACP100核电厂的安全密切相关。为了深入分析该系统的功能和性能,以某采用ACP100堆型的核电项目机组为例,对该系统的组成、功能模块设计及定期试验进行分析研究。根据分析可知,无论是单个模块还是整个系统,在冗余、多样化、独立性、可靠性、故障安全等方面都进行了充分的设计考虑;同时,通过定期试验的设计,能够快速、全面地检测出模块和链路的故障。分析结果表明,基于国产安全级数字化控制系统(DCS)平台NASPIC实现的ACP100爆破阀控制系统设计保证了事故情况下可以可靠地驱动爆破阀动作,并缓解事故。所提出的设计方案和分析思路对ACP100堆型的安全级DCS爆破阀控制系统设计具有积极的指导意义。

The squib valve is a key piece of equipment in the ACP100 automatic depressurization system.The ability of the safety control system of the squib valve to perform safety functions safely and reliably is closely related to the safety of the ACP100 nuclear power plant.In order to analyze the function and performance of this system in depth,the composition,functional module design and periodic testing of this system are analyzed and studied on the example of a nuclear power project unit with ACP100.According to the analysis,it can be seen that both individual modules and the whole system have been fully designed with regard to redundancy,diversity,independence,reliability,and fail⁃safe.Meanwhile,the design of periodic tests enables fast and comprehensive detection of module and link failures.The analysis results show that the design of the ACP100 squib valve control system implemented on the domestic safety digital control system(DCS)platform NASPIC could reliably actuate the squib valve so as to mitigate the accident.The proposed design scheme and analysis ideas are positive guidance for the design of safety⁃grade DCS squib valve control system for ACP100.