Prevent pressure transients with the use of a bladder surge tank: as a result of pressure transients at the pardes hagdud pump station, a decision was taken to install a bladder surge tank in addition to the air valves

摘要

Pressure transients can be described as waves possessing both, positive and negative amplitudes. These transients are caused by sudden extreme changes in flow velocity brought about by events such as pipe bursts, sudden changes in demand, sudden pumpstart-ups and shut-offs, opening and closing of fire hydrants, rapid closing and opening of in-line isolating valves, flushing and draining operations, fire flow, feed tank draining, etc. These so-called hydraulic pressure transients (surges) present oneof the most prevalent causes for pipe damage, including pipe bursts, pipe collapse, pipe cracking.