Assessment of the customer water supply reliability

Summary

The operation mode of water supply systems is influenced largely not only by the probabilistic nature of the water consumption but also by the emergency situations occurring in the pipeline sections and at the facilities that also have probabilistic nature. Overlapping of these two random processes provides for the actual pattern of the water supply and distribution system operation. A method of determining the probability of trouble-free water supply of every customer on the basis of load flow task solutions with nonfixed water abstraction for all possible combinations of random water abstraction and emergency situation occurrence is proposed. The method provides for calculating for the existing or water supply system under upgrade the probabilities of supplying every customer with water in terms of 100% and 70% assurance, and concluding on the reliability of water supply in whole if the regulatory values are available. The method can be useful both in practical operation and design of prospective plans of water supply system development.

Key words

water supply , water supply and water distribution system , nonfixed water abstraction , probabilistic nature of water consumption and emergency situation occurrence , probability of trouble-free water supply to the customers