Honeywell International Inc.

David Anthony Eden

Isaac D Cohen

Russell D Kane

Roland Miezianko

The present invention relates generally to thermal imaging systems and methods and uses therefor, and in a particular though non-limiting embodiment, to a method of detecting corrosion under insulation, as well as corrosion-related material data associated therewith. The system utilizes advanced infrared imaging video cameras to detect characteristic signatures of wet thermal traits on process equipment. Various embodiments of the invention integrate equipment, automation, and algorithms to form a method for identifying wet thermal insulation by scanning multiple locations along insulated piping, tanks, or other manufacturing equipment. Such scans can occur individually, sequentially, or simultaneously, with the results then being stored and comparatively analyzed. Further embodiments comprise tracking the approximate time of exposure to moisture, prediction of the corrosion rates for underlying insulated metal substrates, and measuring wall thicknesses along either predetermined random portions of the metal substrate.

Method and system for detecting corrosion under insulation

A method and apparatus for simultaneously and continuously monitoring both the general and localized corrosion of a working metallic electrode is provided, wherein a low frequency, low amplitude periodic potential excitation is used to perturb the electrode around its free corrosion potential. The potential is controlled with respect to a reference electrode by means of a potentiostat, and an auxiliary electrode used to stimulate current flow. The current response of the working electrode is monitored and analyzed continuously for general and localized corrosion activity. Means are provided for validation of the integrity of the current response to the applied potential excitation. Simultaneous and continuous outputs for both general and localized corrosion activity are also provided.

Method and apparatus for electrochemical corrosion monitoring

The present invention provides a method and apparatus for estimation of general and localized corrosion penetration rates of metallic materials and objects. The invention can also be used to discriminate between general and localized corrosion. A one, two or three electrode probe having electrodes () made of the same material as the material being monitored is located in the same corrosive environment as the material being monitored. An electrochemical harmonic analysis is performed and electrochemical noise signals are monitored, and the resulting responses are analyzed and compared to discriminate between general and localized corrosion attack and to determine a localized corrosion penetration rate. A law frequency sine wave is applied to the working electrode. Harmonic analysis of the electrode response provides information regarding the general corrosion rate and the stern-geary constant. Electrochemical noise analysis of the electrode response and comparison with harmonic data provides a means of determination of localized corrosion penetration rate.

Growing community of inventors

Spring, TX, United States of America

David Anthony Eden