Lack of fusion

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

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Lack of fusion between passes in the weld metal. This defect is small, probably not detectable in any destructive test and not influencing the failure.
52
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ML00150 / Dec.2018
Vibration Induced Fatigue in a SS Oil Piping
M - Duplex Stainless SteelP - PipingAp - FPSOCd - Vibration Induced Fatigue
Cm - NaOH Electrolytic Etched MicroDf - Lack of fusion

More from these cases

ML00150 — Vibration Induced Fatigue in a SS Oil PipingM - Duplex Stainless SteelP - PipingAp - FPSOCd - Vibration Induced Fatigue
Lack of fusion at the fusion line (between the weld metal and the base metal). This defect is small, probably not detectable by any destructive test and not affecting the fatigue life.
58
VIEW
ML00150 / Dec.2018
Vibration Induced Fatigue in a SS Oil Piping
M - Duplex Stainless SteelP - PipingAp - FPSOCd - Vibration Induced Fatigue
Cm - NaOH Electrolytic Etched MicroDf - Lack of fusion