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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Brittle Behavior Microstructure: Austenite Capture method: Aspect Before Analysis clear all

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Aspect of the hydraulic line samples removed from service to be analyzed. Tubing and welded joint (bottom sample) between the 316 tubing (left side of the sample) and the nitronic fitting (right side of the sample). The cracking is located 10 mm far from the weld, autogenous orbital GTAW.
108
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ML00095 / Sep.2017
MIC of a Riser Control Line
M - Austenitic Stainless SteelP - Fabrication WeldAp - Oil and GasCd - Brittle Behavior
Cm - Aspect Before AnalysisDf - General View

More from these cases

ML00095 — MIC of a Riser Control LineM - Austenitic Stainless SteelP - Fabrication WeldAp - Oil and GasCd - Brittle Behavior
Detail of the welded joint between the 316 tubing (left side) and the nitronic fitting (right side). The through wall cracking is transverse to the line, in the fitting, 10 mm far from the weld, where the fitting was slightly bent to be assembled (cold bent).
65
VIEW
ML00095 / Sep.2017
MIC of a Riser Control Line
M - Austenitic Stainless SteelP - Fabrication WeldAp - Oil and GasCd - Brittle Behavior
Cm - Aspect Before AnalysisDf - Welded Joint