Scientific paper ID 1162 : 2015/3

In modern conditions of Bulgarian industry many companies act as suppliers of parts for installation in transport equipment. This segment of our industry has its many and sizable problems. One of the most significant problems is the significant depreciation of the technological park. Relatively affordable solution to the problem is to carry out modernization of existing equipment. In this modernization selection of the specific object may be achieved by different criteria. This report examined the characteristics in the study of operational reliability as a criterion when choosing a object for carrying out modernization.

In view of the different physics of failures in the components of the complex technical object, the latter is divided into an electronic, electric, mechanical and hydropneumatic part. Object of the specific study of the mechanical part of the machines. In view of the not inconsiderable costs in the study of the operational reliability of technical objects based on an analysis of the operating conditions in the user"s particular method chosen for study, namely - the method of monitored exploitation. Collected statistical information is subjected to initial processing and set the values of a set of indicators for operational reliability and work efficiency of the machines. Based on comparative analysis made relevant conclusions and recommendations on the choice of object for modernization.