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Refinery Cooling Tower Riser Pipe Repair

Carbon Fiber Strengthening of Cooling Tower Risers

Problem vs Solution
  • Thin wall and through-hole defects were present due to soil air interface corrosion (SAIC)
  • 12 risers required repair during a short window and needed a 200 psi design pressure
  • CarbonSeal™ was designed to fully restore the structural integrity of the pipe and provide a leak-proof barrier that was resistant to future corrosion
  • Riser were excavated 10-ft to expose sound substrate and all active leaks were stop-gapped until the CarbonSeal Repair System was allowed to cure
  • Service life was extended 15 years

   See the before and after photos below.

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