Print Email Facebook Twitter Comparison of core sampling and visual inspection for assessment of sewer pipe condition Title Comparison of core sampling and visual inspection for assessment of sewer pipe condition Author Stanic, N. Haan, C. Tirion, M. Langeveld, J.G. Clemens, F.H.L.R. Faculty Civil Engineering and Geosciences Department Water Management Date 2012-12-31 Abstract Sewer systems are costly to construct and even more costly to replace, requiring proper asset management Sewer asset management relies to a large extent on available information. In sewer systems where pipe corrosion is the dominant failure mechanism, visual inspection (CCTV) and core sampling are amongst the methods applied mostly to assess sewer pipe condition. This paper compares visual inspection and drill core analysis in order to enhance further understanding of the limitations and potentials of both methods. Both methods have been applied on a selected sewer reach in the city of the Hague, which was reportedly subject to pipe corrosion. Results show that both methods, visual inspection and core sampling, are associated with large uncertainties and that there is no obvious correlation between results of visual inspection and results of drill core analysis. Subject asset management, CCTV, core sampling, inspection, sewer condition To reference this document use: http://resolver.tudelft.nl/uuid:1f25708a-2ad6-48ff-b86c-e44d39ddbec2 Publisher IAHR/IWA Source 9th International Conference on Urban Drainage Modelling, Belgrade, Serbia, 4-6 September 2012 Part of collection Institutional Repository Document type conference paper Rights (c) 2012 The Authors Files PDF 289822.pdf 363.46 KB Close viewer /islandora/object/uuid:1f25708a-2ad6-48ff-b86c-e44d39ddbec2/datastream/OBJ/view