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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Erosion Corrosion Microstructure: Monophasic Capture method: Aspect Before Analysis clear all

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Region of the leakage close to the welded joint between the pipe and the 90° elbow, in the 1 1/2" nominal diameter piping, SCH 40 (3.7 mm thick). See the schematic drawing in the next figure
966
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Aspect Before AnalysisDf - Leakage

More from these cases

ML00065 — Erosion Corrosion of Monel PipingM - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Aspect of the piping cut in the longitudinal direction, presenting the leakage region close to the welded joint between the pipe and the 90° elbow. The original SCH 40 (3.7 mm thickness) presents an actual average thickness of 2 mm all through the piping extension, evidencing a general thinning. See the schematic drawing in the next figure.
364
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Aspect Before AnalysisDf - Leakage