Model changing and equipment management improvement for local transmitter of nuclear power plant

With technology development, the current installed capacity of nuclear power plants keeps growing. In order to give full play to the availability of main high-performance equipment and improve the plant power factor, the signals for protection, monitor and control are strictly required on reliability, stability, and accuracy. These features are the basic requirements of signals which are mainly form the local measurement instruments. In this paper, according to the local transmitter maintenance experience of Qinshan Nuclear Power Co., Ltd., the paper is talking about the management and improvement of local instrument devices, and focus on analysis of measurement principles, history status, and possible causes of the incident. (author)