SELECTING THE RECOMMENDED INSPECTION INTERVAL FOR THE TECHNICAL CONDITION OF GAS-DYNAMIC EQUIPMENT COMPONENTS AND ASSEMBLIES BASED ON STATISTICAL FAILURE DATA

The paper considers statistical failure data for gas-dynamic equipment; performs an analysis of failure counts for groups of components and parts of a stationary gas turbine unit (GTU) with a nominal capacity of 10 MW, driving a centrifugal blower (CB), over a 10-year operating period, depending on the operating time since repair. Calculations of the mean time between failures and confidence intervals for the failure sample are carried out using Student’s t-distribution. The results underpin a methodology for calculating the recommended inspection interval for monitoring the technical condition of GTU components.