66-Inch Denver Steel Water Line
Denver Water experienced a catastrophic failure in February 2008 when a sudden surge from a pump failure collapsed a 66-inch steel pipeline that conveys water to the northern part of Denver. To put the line quickly back into service and rebuild the roadway, Denver Water had to utilize the only 66-inch pipe section available from a local manufacturer. However, this pipe section was pressure rated at approximately 200 psi while the line needed a pipe pressure rating of 315 psi (225 psi working pressure and 90 psi surge). Denver Water decided to utilize the patented Tyfo® pipe rehabilitation system, a carbon reinforced polymer, to structurally retrofit the line for 315 psi).
This method of structural retrofit was selected because no other options were available that would provide a completely trenchless renewal of this magnitude.
The project was completed on schedule and within budget and enabled Denver Water to place the line immediately back into service.