Failure impact analysis of isolation valves in a water distribution
Journal of Water Resources Planning and Management
American Society of Civil Engineers
Isolation valves are crucial components of water distribution systems for separating pipe segments from the network for repair or maintenance purpose. This paper looks at the impacts of isolation valves failure on the three indictors including number of valves that are needed to isolate a distribution system segment, the size of distribution system segments and the shortfall in meeting demands during failure. A network with various isolation valve configurations in terms of the density of valves is used as a case study. The results obtained from the case study show that the failure of an isolation valve has substantially varying impacts on system performance during a shutdown. The density of valves in the network determines impacts of inoperable valves on a shutdown. Generally speaking, a higher density of isolation valves leads to the less impact of valve failure. Finally, several conclusions drawn from the critical valve analysis in this study could be applied to guide the isolation valve maintenance and management.
Bentley Systems provided the software to conduct the hydraulic simulation and valve segmentation. This study is financially supported by the National Natural Science Foundation of China (51320105010, 51579027), the National Science and Technology Major Project (2014ZX03005001), and Ministry of Water Resource of China (Grant No.201401014-2), which are greatly acknowledged.
This is the author accepted manuscript. The final version is available from American Society of Civil Engineers via the DOI in this record.
Published online: March 01, 2017