Ryabchenko I. Increase of efficiency and reability of work of water supply system (designing, reconstruction and maintenance)

Object: Water streams distribution in SWFD in ordinary and emergency conditions of their maintenance. The Aim: research and development of the theory and methods of water supply systems perperformance in ordinary and emergency situations. Methods and equipment: Computering modeling of water streams distribution in water distribution networks, using the theory of decision making of multicriteria tasks. Theoretical and practical results: it is worked out the, theory, methods algorithmic and programming supply. The novelty lies in the fact that for the first time the tasks of projecting and maintenance of water distribution networks are mathematically formulated as multicriteria tasks of generalized mathematical programming. It is developed the theory and of rational networks maintenance in case of emergency. There are formulated and proved the statements about the uniqueness of: the existence of maximum localizing subgraph, the graph dividing into maximum localizing components, the procedures of hy pergraph constructions. The extent of introduction: the program tools are implemented into the production of water pipes in 9 cities of the Donetsk region, in designing-research institutes of Kharkiv, academic processes of higher educational establishments of Ukraine. The sphere of introduction: water supply systems.