Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of connection type on galvanic corrosion between lead and copper pipes
Pipe connectors can significantly influence galvanic corrosion between lead and copper pipes by distancing the lead from copper pipe, introducing a third metal, and forming crevices. In this study, the effects of distance, connector material, and crevices on galvanic corrosion were examined, and bench‐scale comparison testing of commercial connectors was conducted using real tap waters. Brass connectors were found to only slightly decrease (< 25%) the galvanic current that sacrifices, or corrodes, lead pipe, with higher reductions for brasses with higher zinc content. Crevices in brass connectors contained water with extremely high levels of lead (up to 9.4 × 106 μg/L); in bench‐scale tests, crevices produced approximately four times more lead release to the water than did direct connections.
Effect of connection type on galvanic corrosion between lead and copper pipes
Pipe connectors can significantly influence galvanic corrosion between lead and copper pipes by distancing the lead from copper pipe, introducing a third metal, and forming crevices. In this study, the effects of distance, connector material, and crevices on galvanic corrosion were examined, and bench‐scale comparison testing of commercial connectors was conducted using real tap waters. Brass connectors were found to only slightly decrease (< 25%) the galvanic current that sacrifices, or corrodes, lead pipe, with higher reductions for brasses with higher zinc content. Crevices in brass connectors contained water with extremely high levels of lead (up to 9.4 × 106 μg/L); in bench‐scale tests, crevices produced approximately four times more lead release to the water than did direct connections.
Effect of connection type on galvanic corrosion between lead and copper pipes
Clark, Brandi (Autor:in) / Cartier, Clément (Autor:in) / Clair, Justin St. (Autor:in) / Triantafyllidou, Simoni (Autor:in) / Prévost, Michèle (Autor:in) / Edwards, Marc (Autor:in)
Journal ‐ American Water Works Association ; 105 ; E576-E586
01.10.2013
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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