ABSTRACT
In the dewatering plants there is a risk of water hammer as long as increasing depth of piping and increasing the length for pipeline. The increase in flow velocities in the pipes, will be increased the value of hydraulic shock. This may lead to the destruction of the pipeline and violations of the normal operation of dewatering systems. The emergency power shutdown of engine pumps is the main reason which to cause the water hammer pressure in pipelines. A hydraulic shock arises from the changes in the degree of opening the valves. It is practically possible to avoid changing the mode of closing and opening of the valves [1, 2].
