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Company combats MIC with aggressive control programme. S. Farthing. Pipeline Gas Ind., October 1997, 80(10), 43--47.

Microbiological influenced corrosion (MIC) is described as a major cause of pipeline failures experienced by Columbia Gas Transmission Corp. Internal corrosion is caused by anaerobic sulphate reducing bacteria and by acid producing bacteria. It takes the form of pitting corrosion, generation of H2S, increased sulphide cracking and blistering, and generation of inorganic solids. Problems occurring in hydrostatic testing, on-line and in-line treatments, drip pots, and downhole applications are reviewed and remedial biocide treatments are discussed. Some key factors in applying a biocide control programme are listed.
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