关键词: 核电站, 逻辑标准化, 安全性, 可靠性, 经济效益

Abstract: The traditional drive logic design methods, which are specifically for the relay based control systems, can no longer satisfy the new requirements of the digital control systems. This paper intends to solve this problem with a new optimal design technical route and an optimization procedure. A full open/close electric valve is taken as a case to illustrate the optimal design procedure of the drive logic in nuclear power stations. The optimal design methodology is further employed in the conventional island and BOP of Ling’ao second phase project to form the drive logic standard modularization, cancel some relevant relays, simplify the logic circuit, and reduce the error rate. With the methodology the accuracy of the parameters is guaranteed, and the reliability and safety of the units is improved, bringing high economic benefits to the enterprises.

Key words: nuclear power station, logic standardization, safety, reliability, economic benefit