NDT Global conducted a combined inline inspection service and a fitness for purpose analysis (FFP) for South American pipeline operator SONACOL. The FFP analysis is a level 2 assessments (per API 579-1) which revealed a crack feature showing critical pressures located in a natural reservoir. This 6” pipeline system transports jet fuel across high consequence areas (HCAs). The FFP identified diverse anomalies, that require attention and mitigation measures. 

FEA results showed that the maximum stress generated was an effect of the internal pressure and longitudinal loads located inside of a “crack-like” anomaly in a specific area of the depth profile. Under the pipeline’s current operational conditions, the remaining life is 1,481 cycles of load, with every operative cycle corresponding to 24 hours; therefore, the remaining life of the joint is approximately four years. Because the maximum stress generated was less than the SMYS of the pipe material, NDT Global concluded that the deformation generated was within the boundary of an elastic behavior. The failure pressure and safe pressure indicated the mechanical capacity was calculated at 1,440 psi (99.3 bar). These results, in addition to the remaining life, allowed the operator to manage the pipeline understanding the mechanical capacity subject to completing the repair within four years. NDT Global provided the elements, precise assessments and results to enable a better decision on the operator side a timeline to safely and cost-effectively continue operations, while simultaneously planning a strong course of action for the future.