Two successive leakages were reported in the heat exchanger composed of 8 rows of finned tubes of the convection section of the condensate stripper re-boiler. A comprehensive study (Failure Analysis) has been conducted to reveal the form of failure. The failure was recognized as erosion and cavitation damage.
In the past the detrimental effects of pure erosion CO2 corrosion (sweet corrosion) and chloride corrosion and the combined effects of erosion-corrosion. This study introduces a new test facility and testing procedure that allows all three components to be measured simultaneously using a variety of testing techniques.
Multiple leaks occurred with a carbon steel pipe carrying hot condensate water (300F and 140 psi). A root cause analysis was performed, including visual and metallographic examination of two failed samples chemical, analysis of weld metal and base metal and chemical analysis of water samples. Results show that flow accelerated corrosion (FAC) was the responsible mechanism leading to the failures.
Development is needed for new materials to extend the life/reliability of surfaces used in geothermal turbines. Results of Tests and inspection of coatings on low carbon steel including; visual inspection, microstructural and chemical composition analysis with scannoing electro microscopy and energy dispersive x-ray spectroscopy.
NEW EDITION: The Second Edition of this classic handbook combines Volumes 1 and 2 of the First Edition into a single volume, adding updated commentary and many new case histories. Mechanisms and numerous case histories illustrate general, localized and galvanic corrosion, environmental cracking, erosion-corrosion, cavitation, fretting, intergranular attack, dealloying, and high-temperature corrosion.
This book presents detailed corrosion mechanisms and case histories of a wide variety of corrosion problems from chemical plants, oil production and refining, utilities, pipelines, transport by air, land, and sea, electronics, and the preservation of historical artifacts. The uses of advanced analytical techniques such as electron microscopy, metallography, energy-dispersive X-ray spectroscopy, Aüger spectroscopy and electrochemical techniques are presented to illustrate their utility in corrosion failure investigations.