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Repair and Rehabilitation of the Failed WSSC Northwest Branch PCCP Interceptor

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On December 29, 2007, the 168 centimeter (cm) (66 inch) Northwest Branch Sanitary Sewer Interceptor experienced a failure due to hydrogen sulfide attack. The following presentation identifies how this failure was analyzed, inspected, repaired and protected against future hydrogen sulfide attacks. The inspection process and protective liner used are state of the art technologies designed to provide high levels of analysis and service.

Keywords: 168 cm (66 inch) PCCP pipe break; CCTV inspection; Laser inspection of pipe; large diameter line stops; spiral wound PVC pipe liner

Document Type: Research Article


Publication date: January 1, 2009

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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