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Title: Effect Of Microbiologically Influenced Corrosion On Underground Steel Gas Piping
Author: Raymond A. Day, James R. Frank
Source: American Gas Association 1987
Year Published: 1987
Abstract: In January 1986, the Gas Research Institute (GRI) initiated a research project at the Midwest Research Institute (MRI) to determine the nature and extent of microbiologically influenced corrosion (MIC) of underground steel gas transmission pipelines. In 1986, working with cooperating pipeline companies, GRI/MRI investigators visited more than twenty field sites where pipeline excavations had been made. The researchers obtained samples of water, liquids, soil, corrosion products, and pipe for testing. Results of the examinations showed the presence of sulfate-reducing bacteria (SRBs) could not necessarily be correlated to the occurrence of corrosion. However, on the basis of biological, chemical, and metallurgical data that have been obtained, it was shown that acidproducing bacteria (APBs) may be contributing to internal and external MIC on some pipelines and underground gas storage piping. Continuing research by GRI will focus on the development of effective MIC mitigation methods.

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