AWWA JAW68589

Rapid changes in flow rate can cause serious problemsin water distribution systems. High water hammerpressure can permanently deform or rupture a pipelineand its components, and low pressure can collapse apipeline, causing leaks, disrupting service, and contaminatingpipelines. One way to protect distribution systemsfrom damage is to install a pressure relief valve (PRV).The authors illustrate the challenges inherent in PRVdesign and show that an appropriately designed PRVcan protect some systems from excessively high or lowpressures and that inappropriate use can actuallyworsen a system's transient response. The general principlesof PRV use and selection are presented in twocase studies along with a sensitivity analysis of PRVparameters. This study contributes to a cost-effectivesolution to excessively low- or high-pressure control indistribution systems, making water suppliers moreaware of the need for numerical simulation of transientflow and water hammer control issues in water supplyand distribution systems. Includes 4 references, figures.

Product Details

Edition:

Vol. 100 - No. 8

Published:

08/01/2008

Number of Pages:

8

File Size:

1 file , 630 KB