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Pipeline Technology Journal 2-2015

Latest developments and news from the pipeline industry

RESEARCH / DEVELOPMENT / TECHNOLOGY LOAD CYCLE AND FINAL TESTS Precaution for acceptance as durable repair system was the successful passing of at least 100.000 load cycles from zero bar up to MAOP of undamaged pipe without any negative impact (e.g. cracks) to the defect area. Due to the permanently monitored results these tests were stopped with all products at 20.000 load cycles and continued up to 100.000 load cycles with AWP – wraps only. After completion of load cycle tests, the defect areas were intensively tested and the AWP – developed repair sys- tem, durably certified by TÜV–Süd Germany. Afterwards all necessary repairs at the AWP main line were executed within few weeks. LOAD CYCLE AND FINAL TESTS Finally the repair system was patented by the Austrian patent and trade- mark office and a license agreement was closed with a distribution and application partner, who made it available to the market as “pcw - per- manent carbon wrap” after having made some improvements in appli- cation and handling matters. Meanwhile more than 100 successful defect repairs (except that of AWP) were executed all over Europe by the company pipe&lines. Author Michael Huss Adria-Wien Pipeline GmbH Pipeline Integrity Engineer Klagenfurt, Austria +43 (0)463-56990-1616 Figure 9: pcw- carbon wrap applications (reinforcements of wall thickness, metal loss, dent) PIPELINE TECHNOLOGY JOURNAL 35

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