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Drainage
Conduction of electric current from an underground metallic structure by means of a metallic conductor. Forced drainage is that applied to underground metallic structures by means of an applied electromotive force or sacrificial anode. Natural drainage is that from an underground structure to a more negative (more anodic) structure, such as the negative bus of a trolley substation.
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- Part of Speech: noun
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- Industry/Domain: Materials science
- Category: Corrosion engineering
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