Assessment Services Ideas Portal

H2S damage occurs at gas pockets, so the sensor to detect the diameter change/ovality due to H2S would need to be able effective through water and air.

I’m not sure what the market is for H2S damage detection, but I can think of one instance where this would have been helpful. In Jersey City, we completed a SmartBall and PipeDiver inspection where gas pockets and correlating EM anomalies were detected. This area lined up with a high point where we expected to have open channel flow during low flow periods. CCTV footage determined there was significant deterioration of the concrete core. I texted the image of the findings to you on Friday.  

A client in Delaware is a future customer of H2S detection. They are dealing with a force main failure this year. I believe the failure was caused H2S corrosion at a localized high point, due to ARVs being installed in the wrong location and/or the pipeline settling/not being laid correctly. We did a short manned inspection and found additional H2S damage. They have many more miles to inspect and would probably be interested in this service if we offered it.

In general, force mains typically are low pressure and the failure mode often differs than in PCCP transmission mains. This would help address the common failure mode of H2S. Additionally, I think this capability might help win inspections of RCP force mains that we currently don’t inspect.