The process of the housing stock aging is constant and continuous. Untimely repair of housing significantly increases the risk of accidents. The purpose of the management companies is to carry out a complex of repair works of apartment buildings according to the current quality requirements for the entire period of operation. The real estate, enterprises, organizations owners engaged in the operation and maintenance of housing, are extremely interested to increase the duration of the effective operation period for buildings and structures basing on the system of maintenance and repair of buildings. This system is equally important for each period of the life cycle of the property. In the field of housing and communal services, despite the ongoing reforms, the problem of timely financing of repair works aimed at ensuring comfortable and safe living conditions in accordance with the existing quality standards is acute. In this regard, the development of an effective system of housing maintenance is a priority. The current state and the main prospects of development of maintenance and maintenance of the housing stock during the planning and repair work in apartment buildings are considered. The proposed multilevel structure of the maintenance system and the methodology of evaluation of technical condition of residential properties taking into account the individual characteristics of the object. The method of planning of repair and construction works taking into account organizational and technological reliability is developed. The technique presented in the article allows to improve the quality of management decisions, which in turn ensure compliance with comfortable and safe living conditions and efficient use of financial resources.

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Paper provides a comparative analysis of three nuclear power plants: Novovoronezh NPP in Russia, Kudankulam NPP in India, and Bruce NPP in Canada. The basic parameters (site plan, biosphere diversity, types and capacity of reactors, amount of electricity generated and its cost) are compared. Types of waste generated at all three nuclear power plants and methods of their treatment are analyzed. Brief overview of some of the security systems used at these power plants is conducted. On the basis of comparative analysis, proposals for improving the environmental situation in the Novovoronezh NPP region (e.g. improvement of the wastes management) are made, with the proposal of nuclear fuel cycle scheme enhancement.

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