Development of Portable Monitoring System for I&C System

The main function of the monitoring system is to confirm that the self-diagnosis function of Instrumentation and control system is operating correctly and the other is to diagnose the state of Instrumentation and control system. The development and testing of the monitoring system were based on the POSAFE-Q, a domestic nuclear power Instrumentation and control system applied to Shin Hanul and Shin Kori. As a result of testing the functions of the monitoring system, POSAFE-Q was able to perform the performance test of the self-diagnosis function. In addition, it was able to diagnose forged and modulated tasks by external attack. Such a monitoring system is expected to enhance the reliability of Instrumentation and control system exposed to the threat of various cyberattack. Although the monitoring system proposed in this paper has its own security by the login and device registration, it is vulnerable to external network connection or personal security because it is a general PC. This problem can be treated as a separate rule when applied to the field, but it is necessary from the viewpoint of personal security to research and develop additional security functions.