New strategies of freight wagons repair and maintenance

Abstract

The main target of repair and maintenance system (hereinafter referred to as RMS) is target reliability rate maintenance at all stages of rolling equipment technical operation. Development and implementation of improved reliability rate of new wagon generation, safety running indicator maintenance, present fleet of wagons maintenance in the context of long operating life, insufficient providing of repair depot with spare parts and other materials, infrastructure aging requires RMS efficiency upgrading. Current maintenance and freight wagons repair system requires changes that concern not only car-mileage optimization between scheduled repair, but also transition to new strategies of RMS. This article concerns positive and negative aspects of different strategies of maintenance and repair, possibilities of their implementation in RMS of freight wagons. The algorithm of RSM strategy is suggested. It is based on integrated analysis of freight wagon reliability taking into account those construction units that limit the time between maintenance and repair. In addition crucial task is sufficient minimum number of controlled variable for obtaining the information about diagnosing object’s current state. This task requires improvement of separate units technical condition diagnosis programs. Based on obtained data mathematical models for current operation process and RMS impact on freight wagon fault are developed.