The Calculation Process of Channel Uncertainty on Digital System for Integral Reactor

The Channel Uncertainty is very important factor on the Safety Analysis input data because the channel uncertainty is the input data for calculating the trip setpoint and verify the hardware accuracy. But, the instrumentation system is changed to digital system due to technical improvement in these days. So, there are occurred to problems when digital system adopt directly the calculation method of uncertainty on analog system. This paper shows that the difference of the calculation process between analog system and digital system. And also, it presents consideration for calculating the uncertainty on digital system and the calculation process of uncertainty on digital system for Integral Reactor