Testing of the ICMS input data diagnostic system at unit 1 of Novovoronezh NPP II

摘要

AbstractA real-time in-core monitoring system (ICMS) input data diagnostic system was tested for the first time during the commissioning of Novovoronezh NPP II's unit 1. The system was developed by specialists of “Novovoronezhatomtechenergo”, the Novovoronezh filial of JSC “Atomtechenergo”, with participation of the Kurchatov Institute National Research Center's experts. The purpose of the diagnostic system development is to provide for the continuous monitoring of the input data validity in connection with the fact that new and upgraded ICMS designs include the performance of protective functions based on local in-core parameters.Issues are formulated to be addressed in the development of the ICMS input data diagnostic system, the structure of the developed system is shown and basic data on its operation is given. The paper presents the key system test results which have confirmed that the system is capable to detect in real time the measuring monitoring channels with invalid readings and display respective diagnostic information.The considered ICMS system may serve a prototype for the development of similar systems, to be completed with novel functions, in measuring channels of the NPP monitoring and control systems to enable an integrated real-time analysis of data for identification of the causes for, early detection and prediction of developing defects.