Safety analysis of water supply to water treatment plant

Collective water supply system safety analysis should include risk assessment of threats at each stage of water production, from the water intake through treatment, distribution to the point of delivery to consumers. The proposed method, using the definition of the expected value of water scarcity, enables to conduct the analysis and assessment of the risk of lack of water supply to the distribution subsystem, taking into account different combinations of reliability states. The paper analyses the operation of a water treatment plant. The analysis used data operational work of the water intake. The expected value is used as a measure of the risk of the lack of water supply. Calculations were carried out in two variants: for a nominal value, and for the theoretical increase in the demand for water, in which the nominal demand for water is two times higher than the current maximum water production.