Excerpt from Underground Corrosion From the earth are obtained numerous raw materials that are processed into useful products. Conversely, any product placed in the earth ultimately tends to revert, by deterioration of non metals or corrosion of metals, to their original form as found in nature. As a result, the annual cost to the United States pipeline industry resulting from the protection and replacement of under ground structures due directly to corrosion has been estimated to be in the order of 600 million dollars. In ...
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Excerpt from Underground Corrosion From the earth are obtained numerous raw materials that are processed into useful products. Conversely, any product placed in the earth ultimately tends to revert, by deterioration of non metals or corrosion of metals, to their original form as found in nature. As a result, the annual cost to the United States pipeline industry resulting from the protection and replacement of under ground structures due directly to corrosion has been estimated to be in the order of 600 million dollars. In addition, a higher and undeterminable cost results indirectly from corrosion through the loss of products, the loss of life and property by fire and explosion, overdesign of structures, and shutdown of services. This Circular supersedes the National Bureau of Standards Circular 450, issued in 1945, and is a condensed summary of the Bureau's investigations on the corrosion of metals in soils conducted over a period of 45 years. Included are many references to industrial investigations and field experiences related to the Bureau's underground corrosion studies. The aim is to provide a useful reference for the technician who is interested in the theoretical aspects of underground corrosion, and for the engineer who may be interested only in the practical aspects of the methods commonly used for the prevention of corrosion. In interpreting the data reported in the Circular, it should be borne in mind that there are many diverse factors that affect the corrosion of underground structures and that the planning of adequate tests and the proper interpretation of the results are matters of considerable difficulty. Further, much of the subsequently determined phenomena about the causes of corrosion in soils was not generally understood during the organization of' the investigations, and many of the early burial programs were exploratory in nature. Hence, for these reasons, experienced engineers frequently have different interpretations for the same corrosion data. Although a complete under standing of the phenomena of underground corrosion has not yet been attained, the results of the National Bureau of Standards investigations, have been a major contribution to a better under standing of the subject. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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