Evaluation of ultrasonic phased array and laser optical techniques for the intermediate inspection of the root and hot pass in girth welds for clad pipelines

Author: Nageswaran C   Gooch R   Bourgeon A  

Publisher: The British Institute of Non-Destructive Testing

ISSN: 1354-2575

Source: Insight - Non-Destructive Testing and Condition Monitoring, Vol.54, Iss.11, 2012-11, pp. : 612-618

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Abstract

This paper presents the work carried out towards developing inspection methods for application on partially completed girth welds in metallurgically-clad pipes. Being able to detect flaws prior to the deposition of the fill runs provides key technical and commercial advantages. Phased array techniques and a proprietary laser optical system implemented from inside the pipes were evaluated for the inspection of critical weld flaws. This paper shows that inspection solutions readily available to industry at present can aid in improving the welding of clad pipeline girth welds.

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