Potential uses of an IR camera to detect and quantify lateral connections in sewers

Abstract (2016)
Author(s)

Konstantinos Makris (Deltares)

Mathieu Lepot (TU Delft - Sanitary Engineering)

François Clemens (TU Delft - Sanitary Engineering, Deltares)

Research Group
Sanitary Engineering
More Info
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Publication Year
2016
Language
English
Research Group
Sanitary Engineering
Pages (from-to)
40-41

Abstract

Illicit connections are a major reason of the inefficiency of some separate sewers. Despite theirs costs, dye tracing and smoke test methods are common to investigate mis-connections. An infrared camera (FLIR, A35) was used to identify abnormal thermal finger prints (due to lateral connections) along a flume. The illicit connections were simulated by discharging warm or cold water through several types of lateral connections (variation of diameter, intrusion, depth, etc.). Data analysis revealed that the detection of both illicit connections and groundwater infiltration is possible, albeit under certain conditions.

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