Read the full press release that TWI published on their website regarding S4CE here:

https://www.twi-global.com/media-and-events/press-releases/2019/new-system-for-failure-detection-in-geothermal-well-casing

The press release was also shared from the following web magazine:

https://www.powermag.com/press-releases/s4ce-science-for-clean-energy-project-develops-novel-system-for-early-detection-of-failure-in-geothermal-well-casings/