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AWWA DSS71299

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AWWA DSS71299 Condition Assessment of 60-Inch PCCP in Houston, Texas

Conference Proceeding by American Water Works Association, 11/01/2009

Card, Robert J.; Henry, Gregory J.; Crook, James

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This paper discusses a condition assessment program (CA) developed by the City of Houston, Texas, as a proactive approach for extending the useful life and enhancing the functionality of its water system infrastructure. The CA program identified a 60-inch prestressed concrete cylinder pipe (PCCP) transmission line (the South 60) as the highest criticality and priority for assessment. CA of the South 60 was performed in conjunction with a planned project to replace air release valves (ARV) along the same line. By combining the ARV improvements with CA, the City optimized the work activities to isolate and shut down the pipeline. In addition to the pre-shutdown effort, this paper presents results of the inspection and the repairs made. Includes figures.

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Edition: Vol. - No. Published: 11/01/2009 Number of Pages: 10File Size: 1 file , 230 KB