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Gert-Jan Heerens

The next step

The latest developments using ultrasonicguided waves to inspect and monitorcorrosion at non accessible and remotelocations

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8 October 2010Gert-Jan.Heerens@TNO.NL2

Inspection under support (field case)

8 and 10 gas pipe line

Serious corrosion under pipe support

Guided wave inspection to obtain quantitative information about

remaining wall thickness

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8 October 2010Gert-Jan.Heerens@TNO.NL3

Guided wave tomography results: 10 pipe

min. wall thickness: 7.7 mmdepth uncertainty: 1.5 mm

ring 1 ring 2support

wall thickness [mm]

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8 October 2010Gert-Jan.Heerens@TNO.NL4

Guided wave tomography results: 8 pipe

min. wall thickness: 2.5 mmdepth uncertainty: 1.5 mm

ring 1 ring 2support

wall thickness [mm]

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Contact details Gert-Jan Heerens

Tel: 0031 15 2692032

Mob: 0031 6 53363348

Gert-jan.heerens@tno.nl

TNO Science and Industry

Stieltjesweg 1

2628CK Delft

Netherlands