The role of technical specifications and maintenance (TSM) activities at nuclear power plants (NPP) aims to increase reliability, availability and maintainability (RAM) of Safety-Related Equipment, which, in turn, must yield to an improved level of plant safety. However, more resources (e.g. costs, task force, etc.) have to be assigned in above areas to achieve better scores in reliability, ava...

Maintenance is an essential part of long-term overall equipment effectiveness. Therefore, it to evaluate maintenance policies’ effectiveness in addition planning them. This study provides a classification technical systems for selecting indicators and models calculating these indicators. We classified the according signs, such as system maintainability, failure consequences, economic assessment...

Dynamic Probabilistic Risk Assessment (DPRA) is a powerful concept that is used to evaluate design and safety of complex industrial systems. A DPRA model uses a conceptual system representation as a formal basis for simulation and analysis. In this paper we consider an adaptive maintenance of DPRA models that consist in modifying and extending a simplified model to a real-size DPRA model. We pr...

This paper proposes a mixed-grained reconfigurable architecture consisting of fine-grained and coarse-grained fabrics, each of which can be configured for different levels of reliability depending on the reliability requirement of target applications, e.g. mission-critical applications to consumer products. Thanks to the fine-grained fabrics, the architecture can accommodate a state machine, wh...

In this paper we report on ongoing research into the empirical validation of aspect-oriented coupling measures as indicators of maintainability of aspectoriented software. We investigated the aspects of a medium-scale software package developed in industry and measured the maintenance effort that was spent on this software as the number of changed lines throughout the history of each aspect. Th...

This paper presents an analysis of technical debt management through resources allocation policies in software maintenance process during its operation to demonstrate how different strategies leads to the emergence of different behaviors along the evolution path. To achieve this objective, this work used the System Dynamic approach for building a computational simulation model based on extensiv...

The equipment in underground mines provides a continuous production flow, depending on the way their quality is preserved during operation. TR-7A scraper conveyer subassemblies, which function Jiu Valley coal basin and are subjected to abrasion wear, showed high failure frequency (chains, chain elevators, driving turning drums), as well hydraulic couplings certain electric of same machinery. da...

Transformation of equipment manufacturers to become providers of industrial services is a trend that involves deep transformation of companies. Equipment manufactures can potentially provide services significantly more efficiently and effectively by utilizing information about their installed base. We aim to recognise decision support functionality and required information contents for a system...

Sustainability should be supported by modern software engineering methods to guarantee reliability of the running systems. Dynamic reconfiguration is an important technology implementing the sustainability goal. However, building dynamic reconfigurable software system cost-effectively and in a predictable manner is a major engineering challenge. Aiming at solving this problem, this paper combin...