RELIABILITY ASSESSMENT OF WATER DISTRIBUTION SYSTEMS TAKING INTO ACCOUNT ADDITIONAL PARAMETERS
The article presents the results of the work on the study of reliability assessment of water supply and distribution systems. Possible ways of taking into account the additional impact of the constructional, operational and structural components of water supply networks were identified. This article provides an overview of the mathematical approach that can be used to determine the effect on the reliability parameters from the functional load of pipelines. According to the regulatory requirements, the amount of water supplied by the network, in case of breakage on one of the pipe sections, should not decrease by more than 30%. At the same time, for the normal functioning of the water supply and distribution system, it is necessary to ensure not only the intake of water by consumers, but also its transit through pipes to other section. It is quite likely that in case of pipe failure, there is not only a failure in water supply on it, but also a decrease in the amount of water supplied in other pipelines, structurally dependent on the trouble section. In this regard, the possibility of identifying "weaknesses" in the network in terms of functional reliability was explored. Consideration is also given to the possibility of taking into account the unequal influence caused by the disconnection of various network elements. For example, in the article calculated the reliability of the water supply and distribution loop using the proposed mathematical approach. Water supply networks are presented in two versions: cast iron and polyethylene. Based on the calculation, tables with research results and conclusions on the investigated water supply network were provided.