The DCVG survey involves the injection of a pulsed DC signal on to the pipeline and the measurement of voltage gradients in the soil surrounding a coating defect, using specialised test equipment, providing the relative size and location and of each defect along the pipeline. These locations can be marked physically above the pipeline and mapped using the Global Positioning System (GPS) and can be measured to an accuracy of 1 cm.
Savcor ART is in the process of combining the DCVG coating defect survey results with intelligent pigging survey results to obtain a high level of accuracy and produce optimum results for pipeline integrity and maintenance services. Intelligent pigging enables the accurate location of pipeline wall thickness loss with the data recorded accurately using GPS.
DCVG coating defect surveys have been undertaken by Savcor ART during the past 20 years with clients including Mobil, Shell, Agility, Caltex, Duke Energy, Qantas, Integral, Qenos and Chevron.
By combining in-house corrosion expertise, extensive experience and state-of the-art corrosion control products and systems, Savcor has the proven ability and capability to manage large and complex projects and deliver the most cost-effective and technically- sound solutions to its customers.
Savcor Products, which was formed as a subsidiary of Savcor ART in January 2004, aims to specialise in bringing the latest technology products to the pipeline industry. While contractors and asset owners can deal directly with Savcor Products, the same technology and materials are available through Savcor ART for clients who require supply and installation packages.