Clock Spring

Clock Spring

PROVIDING EFFECTIVE INTEGRITY IMPROVEMENTS SINCE 1993

Clock Spring is a composite repair sleeve and reinforcement system uniquely designed for high-pressure transmission pipelines.

Clock Spring was verified through the most comprehensive pipeline repair study ever commissioned. The 10-year, $15 million study by the pipeline industry and conducted by the Gas Research Institute, makes the patented Clock Spring the most tested, investigated, and documented composite repair solution ever developed. Our strongest pipe repair, the Clock Spring, has been tested and proven up to 8,000 psi and is expected to last 50 years or longer, deeming it a permanent repair by regulators. The Clock Spring is used in all environments in more than 75 countries around the world.

The Clock Spring solution benefits your business, safety, and the environment:

  • Business benefits include no disruption to operations, lower costs in equipment and cutting and welding, as well as the opportunity to retain tariff revenue
  • Safety benefits include no hot work, no cranes or overhead lifts, and faster time to close the ditch
  • Environmental benefits include eliminating the need to empty, depressurize or off-gas the line, ensuring no contaminants enter the environment
  • Comprised of pre-tensioned e-glass fibers built to last
  • Sized to fit standard pipe diameters
  • Installed without disruption to operations
  • Designed with unique “wrap-around” shape
  • Requires no special tools for install
  • Enhances short-term and long-term safety

Clock Spring Product Sheet
Download.pdf

Installation Manual - Coil Pass Method
Download.pdf

Pipeline Bend Repair

Extensive external corrosion of up to 80% metal loss on 12’ bend radius either side of canal crossing.
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Pipeline External Corrosion Girth Weld

Extensive external corrosion over a complete 10m joint length also affecting a girth weld location.
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Offshore Topside (Tight Clearance)

The defect is external corrosion with wall loss of 40%. Tees are located both before and after the defect. A 3” pipe hangs above the repair section with a tight clearance of only 3 inches.
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