Application of statistical quality control methods for optimizing the track repair production

The main structural element of the railway transport is the railroads - a multifunctional complex, whose main task is performing all types of repairs, maintenance of tracks and structures. The share of track facilities accounts for more than half of the fixed assets of railway transport, a quarter of the operating costs, the fifth part of our personnel in key areas of activity. The main task of the track facilities is providing road condition, its structures and systems, ensuring smooth and safe movement of trains with specified speeds. This task is implemented on the basis of systematic monitoring of objects by identifying and preventing the causes of their problems and disorders, and also due to perform in the required quantities and in the installed technological sequence of repairs and current maintenance. Conducted research aims at finding ways to improve production technology and to reduce its costs. For this purpose it is necessary to analyze the factors affecting the quality of performed work. The search for solutions to optimize track repair process allowed suggesting efficient statistical methods of quality management. The identified problems let the authors formulate their solutions using the quality control system. 52 % of the fixed assets of the Russian Railways are concentrated in the economy. However, the allocation of investments in this complex is only 18 % of the total volume of investments in Russian Railways. Most of the work on the physical upgrading of fixed assets is funded by capital repairs.