Guided Wave Testing Inspection
Guided wave testing (GWT) is a non-destructive evaluation method that uses acoustic waves that propagate along an elongated structure while guided by its boundaries.
Key information
Project name: Guided Wave Testing (GWT) INSPECTION
Date: 04/2023
Client: Logistique Pétrolière SA (LPSA)
Size: 1.5Km line inspection
Project summary
The inspection of the pipeline using the GWT method had been performed in Tulear, Madagascar, along 1.5Km oil pipes to detect corrosion damage and others defects. This is a High Value method that allow to scan the whole pipe and be much more accurate than simple visual or thickness inspection. This method eliminates any doubts on the good maintenance of the pipe and allows SOCOTEC to recommend action plan if any defects should be corrected.
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Project details
Guided wave testing (GWT) is a non-destructive evaluation method that uses acoustic waves that propagate along an elongated structure while guided by its boundaries. This allows the waves to travel a long distance with little loss in energy and detects corrosion damage and other all along the pipe.
SOCOTEC Madagascar scope of works, through its Industry Agency, consisted on:
- Pipeline Inspection Methods,
- Guided Wave Inspection performed on all accessible piping,
- Manual Ultrasonic Testing performed at all Tool locations to confirm pipe average,
- Detect the defaults along the pipe and propose some recommendations,
- Visual inspection conducted on all areas where access was possible.
“Our client is a company at the cutting edge of technology: we are proud to be one of the first companies in Madagascar to offer this high added value service, which allows oil companies and related ones to ensure the good quality of their piping thanks to an internal and external scan of the pipeline, with very high precision. It is extremely exciting to provide such services through our Industry Agency: the advanced innovation that we offer allows us to meet all the needs of our customers.” Aymeric Perrot
“With GWT material, we can scan up to 250m on average per day but we must not forget that coordination with our customer is essential: Indeed, at the equipment point, the coating of the line must be removed to optimize the entrance signal. Also, we need about 200mm clearance to fit the collar between the pipes and the obstructions. It's a real team effort and SOCOTEC is happy to do it with its customers in order to make the inspection quick, efficient and safe.” Ravakiniaina Solofondraibe
