Analysis of many-dimensional time series of signals from fuel can failure detection system at NPPs with RBMK reactors

The method for identification of radiation states of the RBMK fuel assemblies is suggested. The method is based on analysis of time series of signals from the fuel can failure detection (FCFD) by-channel system, where the background component is excluded and time series of signals from the FCFD sampling system. It is shown that the time series of signals from both by-channel and sampling FCFD systems can be related with sufficient accuracy to the Gauss random functions