Anode Install - Transcontinental Gas Pipe Line (Transco) system Pipeline
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Scope of Work
Pow Pro Construction skilled divers were contracted by Ocean Ventures and Williams Pipeline to assist in locating and recovering damaged sections of anode cables, responsible for providing electrical current to the anodes of the cathodic protection (CP) system, at two separate locations along a critical 26-inch underwater gas pipeline. This pipeline is part of the Transcontinental Gas Pipe Line (Transco) system. Transco, owned and operated by Williams Companies, is a vast network transporting natural gas from the Gulf Coast to the Eastern Seaboard. The pipeline itself was not damaged; the issues were solely with the anode cables supplying power to the CP system, which is crucial for preventing corrosion. At both locations, CP surveys indicated likely breaks in these cables, compromising the effectiveness of the CP system. Our scope of work at both sites included underwater cable location using sonar and diver-assisted methods, jetting and excavation to expose damaged sections of the anode cable, facilitating the recovery of the damaged cable sections to the surface, and supporting the client's engineering team in making the necessary repairs and connections. The overall goal was to restore the CP system to full functionality, protecting the pipeline from corrosion..
Results & Impact
Pow Pro Construction successfully located and exposed the damaged sections of the anode cable at both the Long Island and Perth Amboy sites without any environmental impact. Our expertise in underwater operations, including sonar location, diver-assisted search and excavation, and close collaboration with the client's engineering teams enabled the safe and efficient recovery of the damaged cable sections to the surface. At both locations, the damaged sections of the anode cable were then repaired by the client’s engineers. New cable sections were connected, restoring the cathodic protection system to full functionality. The recovered cable sections were removed, and the repaired cables were secured and protected. The project demonstrated our ability to handle complex underwater infrastructure challenges, specifically those related to anode cable recovery for cathodic protection systems, efficiently and safely, ensuring the continued integrity and safe operation of the Transco pipeline.
