As global pipeline infrastructure continues to age, corrosion protection remains a critical priority for operators. In the United States alone, at least half of gas transmission pipelines are more than 55 years old, increasing the risk of integrity issues.* Pipeline crossings that incorporate external casings for added mechanical protection beneath roads, railways, or waterways present additional challenges, as these casings can trap moisture and corrosive materials while also limiting access for inspection. Against this backdrop, CorroLogic® VpCI® Filler is emerging as an important solution for protecting or extending the service life of aging cased pipeline crossings.
CorroLogic® VpCI® Filler is a two-part system designed to be pumped into cased pipeline crossings, where it forms a corrosion-inhibiting gel around the carrier pipe. Unlike traditional wax fillers or coatings, which may collapse, crack, or delaminate over time, the CorroLogic® system incorporates Vapor phase corrosion inhibitors (VpCI®). These inhibitors migrate into voids and hard-to-reach areas within the casing, providing comprehensive protection to exposed metal surfaces.
An additional advantage of CorroLogic® VpCI® Filler is its compatibility with cathodic protection systems. The filler can be used alongside CP to provide a secondary layer of corrosion defence in situations where contact between the carrier pipe and the casing creates an electrical short, compromising CP effectiveness.
Although CorroLogic® VpCI® Filler can be applied at virtually any point during a pipeline’s service life—provided the casing remains structurally intact—it is most effective when installed during the construction of a new cased pipeline crossing. Early application allows operators to establish corrosion protection from day one while benefiting from easier access during installation. Where new construction is not immediately feasible, the product can also serve as an interim measure to slow corrosion in existing crossings, particularly where wax fillers, coatings, or cathodic protection systems have degraded or failed.
By addressing the specific vulnerabilities associated with cased pipeline crossings, CorroLogic® VpCI® Filler offers pipeline operators a practical and adaptable approach to safeguarding critical infrastructure as it continues to age.
For more information visit www.corrologic.com
