CorrosionDOE-HDBK-1015/1-93CORROSION THEORYRev. 0CH-02Page 1CORROSION THEORYUncontrolled corrosion in DOE facilities can cause many serious problems.Corrosion occurs continuously, and every metal in every facility is subject tosome type of corrosion. Even though corrosion cannot be eliminated, it can becontrolled.EO 1.1DEFINE the following terms:a.Ionizationb.Conductivityc.Corrosiond.Electrolysise.General corrosionEO 1.2DESCRIBE an electrochemical cell with respect to thecorrosion of metals.EO 1.3STATE what happens to a metal during the oxidation step ofthe oxidation-reduction process.EO 1.4STATE what happens to a metal during the reduction step ofthe oxidation-reduction process.EO 1.5DEFINE the following terms:a.Passivityb.PolarizationEO 1.6DESCRIBE the affects of passivity and polarization on thecorrosion process.CorrosionIn DOE facilities, especially reactor plants, many precautions are taken to control the corrosionof metals used in the various primary and secondary systems. Uncontrolled corrosion of thereactor systems is detrimental for the following reasons.Rapid localized corrosion may lead to penetration of the metal containing the coolant.Radioactive coolant would then leak from the system and jeopardize safe operation.
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