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51316-7092-Internal Corrosion Direct Assessment For Offshore Pipelines

Inspection of offshore pipelines is essential to provide vital information required for integrity assessment to allow data driven engineering decisions to be made and prevent costly failures. This paper presents experience from applying Internal Corrosion Direct Assessment (ICDA) for offshore pipelines in the North Sea.

Product Number: 51316-7092-SG
ISBN: 7092 2016 CP
Author: Eugene Ogosi
Publication Date: 2016
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Authors: Eugene Ogosi (Pipelines Corrosion Engineer) James Saunderson (Pipelines Technical Authority)Inspection of offshore pipelines is essential to provide vital information required for integrity assessment to allow data driven engineering decisions to be made and prevent costly failures. To identify and quantify anomalous features and defects including internal corrosion damage it is common to use inline inspection (ILI) pigs.Conventional ILI requires deployment of a tool which has a combination of characteristics that allow the passage of a free-swimming assembly through the pipeline without disruption to normal operation. However some pipelines deviate from conventionally "piggable" pipelines so inspection for internal corrosion could be complex and/or unfeasible. To establish the integrity ofthese dificult to pig pipelines Internal Corrosion Direct Assessments has been performed to ascertain the condition of these pipelines with considerable success.This paper presents experience from applying Internal Corrosion Direct Assessment (ICDA) for offshore pipelines in the North Sea. The paper focuses on how these assessments have been performed challenges experienced results and lessons learnt.Key words: Inline Inspection Corrosion Pigging defects etc

Authors: Eugene Ogosi (Pipelines Corrosion Engineer) James Saunderson (Pipelines Technical Authority)Inspection of offshore pipelines is essential to provide vital information required for integrity assessment to allow data driven engineering decisions to be made and prevent costly failures. To identify and quantify anomalous features and defects including internal corrosion damage it is common to use inline inspection (ILI) pigs.Conventional ILI requires deployment of a tool which has a combination of characteristics that allow the passage of a free-swimming assembly through the pipeline without disruption to normal operation. However some pipelines deviate from conventionally "piggable" pipelines so inspection for internal corrosion could be complex and/or unfeasible. To establish the integrity ofthese dificult to pig pipelines Internal Corrosion Direct Assessments has been performed to ascertain the condition of these pipelines with considerable success.This paper presents experience from applying Internal Corrosion Direct Assessment (ICDA) for offshore pipelines in the North Sea. The paper focuses on how these assessments have been performed challenges experienced results and lessons learnt.Key words: Inline Inspection Corrosion Pigging defects etc

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