The mathematical support of the URRAN information system comprises three interrelated parts wherein the first part is the support system for decision making as to reliability and functional safety management, the second part is the support system for decision making as to resources management, and the third part is the support system for decision making as to transport accidents. The information technology represents a system of collecting, analyzing, processing and investigating events and supporting decision making. It is based on a data warehouse and includes specialized automated applied information systems developed under the guidance and with the direct participation of the authors. These are the system of recording and managing the elimination of technical failures (KASANT), the system of traffic safety controllers (AS RB), the system of traffic safety situational analysis and decision-making support (IKSAR SC), AS URRAN and the corporate automated system of RZD’s staff knowledge control (KASKOR). The URRAN information system has demonstrated the efficiency of its practical application.

The paper presents the algorithm for the optimal scheduling of work performance when the process of maintenance cannot be interrupted but there is some “possession” to perform such maintenance. The maintenance resources are limited. The optimal maintenance means that the schedule provides for as uniform-like distribution of activities of maintenance crews as possible.

Enterprises of Russia’s radio industry engaged in development and production of electronic instrumentation (EI) for space vehicles (SV), face problems of insuring reliability and, first of all, problems of failurefree operation. Failures during EI acceptance tests and accidents at SV operation are real evidences of mentioned problems. One of the reasons of such situation is application of out-of-date and inaccurate methods of estimating the reliability of SV EI at the design stage where developers embed the reliability that will be realized during production and supported at the operation stage.

On the other hand, use of “lower” estimates of failure-free operation parameters can lead to decrease of SV EI competitiveness, as this way in order to enhance reliability, manufacturers unreasonably use various additional ways that lead to deterioration of economic, mass-dimensional and other indices. Therefore, increase of accuracy of estimating the reliability of SV EI with long terms of active existence is a pressing problem, in particular for EI wherein redundancy as well as reconfiguration is used to ensure reliability.

This paper considers the issue related to calculation of reliability parameters of redundant structures in view of ageing elements. Maintenance of facilities at modern industrial enterprises shows that basic parts as well as spare parts are subject to ageing during their functioning. Failed items are subject to restoration, and after repair they are added to the stock of spares. However, one should take into account that repairing generally brings only partial recovery of functionality. An item uses up a part of its life time during the previous operation, and during repair full recovery is not achieved. The problem of defining the structure of spares, with incomplete (partial) recovery of redundant elements and depletion of some part of their life time taken into account, is solved by simulation modelling.

The paper considers two interrelated problems: 1. Based on known characteristics of reliability under the conditions of constant load, how to find these characteristics for the case of arbitrary piecewise continuous functions of load. 2. The inverse problem consists in how to estimate the reliability parameters of a product under the conditions of constant loads, including those for small loads which correspond to normal modes, based on accelerated testing with variable (monotonically increasing) loads.

The paper considers the issues related to the reliability of systems made up of multifunctional piezoelectric modules which depends on an automated system of control of piezoelectric scanners as a whole (and of individual piezoelectric modules), as well as on the reliability of piezoelectric modules themselves wherein electrical energy converts into mechanical energy.

The paper offers the strategy of incoming inspection of components according to a level of deficiency of lots, with expenses for elimination of consequences of defective components coming into finished goods taken into account. The paper considers cost characteristics of complete, sample and uncontrolled incoming inspection of materials and components coming into production.

Dispersion of contaminants moving away from a pollution source. A method is offered to predict atmospheric contamination with various production and maintenance wastes. There are a number of mathematical models describing contamination dispersion. The selection of a model depends on a set of factors. A model is defined by the purpose of calculation and, in its turn, defines a solution approach. This paper considers only two models. The basic guidelines of the paper are general.

Book by I.B.Shubinsky Structural Reliability of Information Systems.

Book by I.B.Shubinsky Functional Reliability of Information Systems.