Managing leaks using flow step-testing, network modeling, and field measurement

摘要

Flow step-testing. In flow step-testing, the step area is subdivided by the systematic closing of valves during the period of minimum nighttime flow, and the reduction in flow is recorded. Disproportionate drops in flow identify pipes with suspected leakage. The estimated leak flow corresponds to the difference between the observed drop in the measured flow versus the calculated drop in the modeled flow.