Tri-State Generation and Transmission Re-Circ Pipe Repairs

Project Description
Craig, Colorado – Work completed during the two week shutdown included electromagnetic testing to identify repair locations, repair design, carbon fiber composite strengthening of 3- eighteen foot length sections of pipe and external post tensioned strengthening of 1-eighteen foot length section of pipe. The external post tensioned section included excavation, installation and stressing of 53 strands and application of wet mix shotcrete exterior shell . The carbon fiber strengthening project included surface preparation and installation of composite.


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