USEPA Sewer Electro Scan Field Demonstration Revisited
Abstract:Potential Rain Dependent Infiltration (RDI) flows are a critical parameter for the design and prioritization of sewer collection system infiltration mitigation projects. An estimate of RDI flows may be obtained from the defect current measured by an electro scan of a pipe. RDI flow has been calculated for the pipes electro scanned during the USEPA sponsored field demonstration. The field demonstration included CCTV inspection of the pipes. For pipe defects that are potential sources of RDI, the comparison with CCTV showed that electro scan is highly reliable, identified 2.1 times more defects and that many of the defects missed by CCTV were potentially the largest sources of infiltration. The distribution of the electro scan estimated RDI flow was significantly more variable than that shown by CCTV. This reveals the potential use of electro scan to target and design rehabilitation projects that will significantly reduce RDI at considerably lower cost.
Document Type: Research Article
Publication date: 2012-01-01
More about this publication?
- 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 These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Ingenta Connect is not responsible for the content or availability of external websites