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A Happy Ending after Eight Catastrophic Failures: Wichita Falls' Experience with Condition Assessment
The Lake Arrowhead Pipeline is a 13.5 mile long, 54 in. diameter prestressed concrete cylinder pipeline (PCCP), embedded cylinder type without shorting straps, and is one of the primary sources of water for the citizens of the City of Wichita Falls. Since its installation in the late 1960's, the pipeline has experienced eight catastrophic failures. After each failure, the City had only 72 hours of water available before their reserves were exhausted. After a series of studies beginning in 1993, the City hired a consultant in 2007 to assess the condition of this pipeline in a 5.3 mile segment which included most of the failure sites, to determine whether the entire segment or only specific segments warranted replacement. To perform the analysis, the Consultant selected Remote Field Eddy Current/Transformer Coupling (RFTC) technology. The total cost of performing the inspection and risk analysis along with the installation of access manholes and other necessary repairs was significantly less than the projected cost of replacing the 5.3 miles of pipeline. The method proved to be a prudent investment of the City's limited resources.
A Happy Ending after Eight Catastrophic Failures: Wichita Falls' Experience with Condition Assessment
The Lake Arrowhead Pipeline is a 13.5 mile long, 54 in. diameter prestressed concrete cylinder pipeline (PCCP), embedded cylinder type without shorting straps, and is one of the primary sources of water for the citizens of the City of Wichita Falls. Since its installation in the late 1960's, the pipeline has experienced eight catastrophic failures. After each failure, the City had only 72 hours of water available before their reserves were exhausted. After a series of studies beginning in 1993, the City hired a consultant in 2007 to assess the condition of this pipeline in a 5.3 mile segment which included most of the failure sites, to determine whether the entire segment or only specific segments warranted replacement. To perform the analysis, the Consultant selected Remote Field Eddy Current/Transformer Coupling (RFTC) technology. The total cost of performing the inspection and risk analysis along with the installation of access manholes and other necessary repairs was significantly less than the projected cost of replacing the 5.3 miles of pipeline. The method proved to be a prudent investment of the City's limited resources.
A Happy Ending after Eight Catastrophic Failures: Wichita Falls' Experience with Condition Assessment
Taylor, Scott (author) / McCain, Kathryn (author) / Varner, Douglas (author)
International Pipelines Conference 2008 ; 2008 ; Atlanta, Georgia, United States
Pipelines 2008 ; 1-7
2008-07-17
Conference paper
Electronic Resource
English
Assessment , Cylinders , Failures , Infrastructure , Texas , Pipelines , Costs , Assets