Pumped Storage Facility Revitalized by GCL Barrier

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By NAUE – After more than 50 years of operation, the Hohenwarte II pumped storage facility near Saalfeld/Thuringia had seen many changes both in the ways in which the facility needed to be used and in its infrastructure and performance. Numerous changes had occurred to the site’s inlets and outlets. The pumped storage facility began to exhibit high rates of leakage. The issue was the aging, ... »

GCLs and a Flood Dam Monitoring System

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By NAUE – The need to mitigate the impact of flooding has intensified as floods have become more frequent and serious. All types of dams are being reassessed. Their “impermeability” during emergencies, which is deeply connected to their integrity and overall safety, is of paramount importance. But how can these structures be monitored for better assurance of performance? NAUE was invol... »

VIDEO: Pumped Storage Plant Barrier Rehabilitation, Germany

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The latest video from NAUE tells the story of the pumped storage plant barrier rehabilitation in Hohenwarte, Germany. The project provided an essential update a half-century-old site. Geosynthetic clay liner (GCL) has been the centerpiece of the sealing system’s update. “We have an upper reservoir with two concrete dams and a rockfill dam provided with a clay seal,” says Dipl.-In... »