プロセス計算機の更新工事について
概要
Process computers are essential to power stations; they gather a plenty of plant data from plants, perform complicated calculation and give plant information to aid operators in monitoring and assisting plant operation. The process computer of the Higashidori Nuclear Power Station has been updated because the maintenance period expired after about 13 years since the start of operation. In updating, on purpose to improve the reliability and maintainability of facilities, each server was integrated into three integrated servers. These integrated servers have resulted in reducing the number of hardware and securing usable space for installing potential control panels and other facilities to enhance safety measures in the future. In order to efficiently implement factory tests, the factory testing was conducted by bringing existing equipment that does not affect the stopped plant even if removed for a long time to the factory. In addition, with an aim to maintain the current monitoring level during the stoppage period of the process computer, a temporary recorder or a temporary process computer was installed. In this paper, efficient renewal work of the process computer is presented.
