Read the whole story of…
…Pre-commissioning ILI in compressed air
We appreciate to share our knowledge and our experience with customers and business partners. Every pipeline inspection project presents new challenges and requires an adapted approach as well as individual technical solutions.
We have compiled this treasure trove of first-hand practical experience for you as a case study. There we describe our concept, our performance and the result of our ILI projects.
Pipeline Description: Several 36″ pipeline sections in the Canadian Rocky Mountains were in pre-commissioning phase. No permanent traps were built. The total lengths of the sections vary between less than 2km and 16km. The sections had a significant elevation profile.Why is it challenging? The planned products for this pipeline couldn’t be used due to pre-commissioning phase. Hence, an inspection in compressed air was planned. The available compressors were able to provide approximately 10bar (140 PSI) only. In addition, significant elevation profiles in the different sections occurred. Hence, speed excursions and heavy mechanical forces were expected and presented several challenges with regards to ILI tool damages and data quality. Target of the inspection: Perform a high-resolution geometry inspection to detect dents, ID changes and ovalities including a pipeline mapping as part of the acceptance process for the pipeline construction contractors. And to detect pinholes and internal corrosion that are to be expected in this pipeline due to the flood damage as a baseline check for future corrosion growth assessments.
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