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Effective SCC Inspection Of In-Situ Oil Sands Pipelines Using Advanced Eddy Current Array Technology

Effective SCC Inspection of In-Situ Oil Sands Pipelines Using Advanced Eddy Current Array Technology
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ECA technologies are not very well known in the oil and gas industry and are still undeservedly suffering from the bad reputation of traditional eddy current testing from twenty years ago. Eddy current techniques are often humorously compared to "black magic" in the sense that the results are difficult to understand, the probes are complicated to use, and only eddy current gurus can use it efficiently. However, ECA has evolved significantly over the past 15 years and is now much easier and more intuitive to use.

Product Number: 51322-17981-SG
Author: Michael Sirois, Mathieu Bouchard
Publication Date: 2022
Industries: Pipelines, Tanks, and Underground Systems , Corrosion Monitoring and Control , Coatings
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This paper presents the successful deployment of advanced eddy current array (ECA) probes for the inspection of intergranular stress corrosion cracking (IGSCC) present on the external surface of aboveground in-situ pipelines. During an inspection campaign carried out in 2020 and 2021 mainly on emulsion and produced gas pipelines, more than 20 indications were found over 20 kilometers of pipeline. These indications range from 5 mm to 400 mm long by 1 mm to 12 mm deep. The technology provided the pipeline operator a fast method for IGSCC detection leading to cost-effective inspection and maintenance planning, while preventing the risk of loss of product containment. 

This paper presents the successful deployment of advanced eddy current array (ECA) probes for the inspection of intergranular stress corrosion cracking (IGSCC) present on the external surface of aboveground in-situ pipelines. During an inspection campaign carried out in 2020 and 2021 mainly on emulsion and produced gas pipelines, more than 20 indications were found over 20 kilometers of pipeline. These indications range from 5 mm to 400 mm long by 1 mm to 12 mm deep. The technology provided the pipeline operator a fast method for IGSCC detection leading to cost-effective inspection and maintenance planning, while preventing the risk of loss of product containment. 

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