Investigation and construction of algorithms for leakage detection in steam generators of the BN-600 reactor

Applicabilities of optimal algorithms used when analyzing stationary random processes to detect leakes in BN-600 reactor steam generators are considered. Their application is shown to be impeded by nonstationary state of the process controlled. The method for ''filtration'' of non-stationary noises of durations at the input of an optimal detector permitting to decrease probabilities of false alarm and leakage signal is suggested. Problems on determination and justification of the parameter controlled to construct on its basis the heuristic noise-supressing detection algorithm are considered. The criterion permitting to determine the best parameter is suggested on the basis of the data obtained on the process controlled