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Aspect by NDT

1 case · 1 image

Crevice Corrosion in a Subsea System — Aspect Before Analysis

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TryML00104 corrosion ML00027 brittle fracture ductile behavior fatigue hydrogen fracture embrittlement stress corrosion

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Visual aspect of the tool joint (TJ) that fractured in the pin body when it was assembled (the box appears as a sleeve in the pin OD). The internal coating is not damaged. The fracture is flat and presents little evidences of plastic deformation, indicating that the pin broke in a brittle way.

69

ML00088 / Dec.2017

Hydrogen Cracking of an API 5D S135 Drill Pipe

M - Low Alloy Medium Carbon QTP - Drill PipeAp - SubseaCd - Hydrogen Embrittlement

Cm - Aspect by NDTDf - Brittle Fracture

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