Assessment and improvement of the operational reliability of the water supply and distribution system in the Irkutsk-II microdistrict of the Irkutsk city

The aim was to test the developed methodology for assessing and improving the operational reliability of the water supply and distribution system and computer software for assessing the reliability of water supply to end users using an example of the water supply system in the Irkutsk-II microdistrict. The research methodology consists in compilation of probabilistic water withdrawal by end users, compilation of a mathematical model of probabilistic flow distribution, formation of key indicators of reliability of end users provision, description of the implementation of the methodology. Based on the results of processing statistical data on water withdrawals and accidents at the sections of water supply networks of the Irkutsk-II microdistrict for previous years, using electronic models of the developed computer software, the functioning of the water supply and distribution system of the microdistrict was simulated in various operating modes. The assessment of the reliability of supplying end users with water was carried out, key indicators of the quality of providing them with a calculated and reduced level for each end user (node) of the calculation scheme were formed, sections of the network that most negatively affect the quality of feeding end users were identified, measures were proposed to optimize the operation of the system, and their impact was evaluated. The advantage of probabilistic modeling, which corresponds to the adequacy of the real processes of the system’s functioning, is the possibility of developing more precise rules for controlling the water supply and distribution system. The paper shows the effectiveness of the developed methodology and software, which, in turn, allow evaluating the performance, reliability, and controllability of the system. The developed calculation method and software is a modern and effective tool for solving many operational and design tasks for the maintenance and development of water supply systems.

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