An Advanced Approach to Fitness-For-Service (FFS) and Corrosion ...

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Recommendations – Post Re-Inspection • An integrity assessment should be carried out to: – Determine the significance of the reported features – This should be based on actual depths at the time of new inspection rather than those predicted from this inspection – Provide confirmation that the mitigation measures put in place have controlled the threat of external corrosion to this pipeline – Identify areas of probable CP shielding, where adequate “off”-potentials have been recorded, but ILI data show continued growth • This should assist with ensuring the future integrity of the pipeline
Iain K. Richardson MACAW Engineering Ltd Thank you for your attention Tel. +44 (0)191 216 4300 Email. iain.richardson@macawengineering.com Web. www.macawengineering.com
Page 1 and 2: An Advanced Approach to Fitness-For
Page 3 and 4: � Purpose of Presentation � To
Page 5 and 6: Pipeline Summary • 12” x 30 mil
Page 7 and 8: Internal Corrosion • The pipeline
Page 9 and 10: External Corrosion • Location 1:
Page 11 and 12: Manufacturing Anomalies Orientation
Page 13 and 14: Dent / Deformation Anomalies Orient
Page 15 and 16: Extra Metal Anomalies Orientation -
Page 17 and 18: Peak Depth (%wt) Immediate Integrit
Page 19 and 20: Immediate Integrity - Manufacturing
Page 21 and 22: Corrosion Growth Assessment • CGA
Page 23 and 24: Feature Matching Process • Distan
Page 25 and 26: Feature Matching Process 65% 55% 37
Page 27 and 28: Corrosion Growth Signal Comparison
Page 29 and 30: Corrosion Growth Signal Normalizati
Page 31 and 32: Example Signal Comparison • Featu
Page 33 and 34: Further Investigations • 1 featur
Page 35 and 36: Future Integrity Number of Single R
Page 37 and 38: Repair Methods Type of Defect Grind
Page 39 and 40: Recommendations - External Corrosio
Page 41: Recommendations - Re-Inspection Int

An Advanced Approach to Fitness-For-Service (FFS) and Corrosion ...

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