Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

A Method for Detecting Failure Data Flow Heterogeneity of Nuclear Power Plant Equipment in Failure Flow

7/14/2012 2012 - #02 Global safety, reliability and diagnostics of nuclear power installations

Chepurko V.A. Chepurko S.V.

DOI: https://doi.org/10.26583/npe.2012.2.08

UDC: 519.23.24.25

Describes the methodology that allows to evaluate the non-homogeneity parameter flow of failures of NPP equipment. Along with the point estimate of the reliability index, an algorithm of constructing its interval estimate allows you to check the statistical significance of hypotheses about the parameter. Algorithm is described in detail the decision criterion with a prescribed level of significance. Analyzed a number of test cases. To detect heterogeneity, processed real data on failures of recharge and boron control NPP VVER-1000 5 unit Novovoronezh.