METHOD FOR EARLY CORROSION DETECTION UNDER INSULATION
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United States of America
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Issued Date -
Nov 14, 2024
app pub date -
May 11, 2023
filing date -
May 11, 2023
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Abstract
The current invention relates to a method for monitoring defects in pipeline sections and/or containers with an insulation layer. A sensor line, comprising a single optical fiber or a bundle of optical fibers, is attached along the length of the pipeline section or over the surface of the container, and positioned on the exterior of the insulation layer. The sensor line is operatively coupled to a temperature sensing (DTS or FBG based) system. The method determines an exterior temperature profile over the length of the pipeline section or surface of the container via the temperature sensing system. Defects are detected, based on analysis of the measured exterior temperature profile and a locally averaged exterior temperature profile along the length of the pipeline section or surface over the container.
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