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C.2 Guidance on determination of 90th percentile. C.3 Principal factors influencing the corrosion and leaching of lead, copper, iron and cement. C.4 Conditions favouring lead leaching and indicators of lead leaching in drinking water distribution and plumbing systems. C.4.1 At the treatment plant.
- Page 4: Guidance on Controlling Corrosion in Drinking Water ...
Coupons inserted in the distribution system are typically...
- Page 5: Guidance on Controlling Corrosion in Drinking Water ...
Lead and iron concentrations at the tap rapidly increase...
- Page 4: Guidance on Controlling Corrosion in Drinking Water ...
1 juin 1997 · The copper corrosion in drinking water was studied using potentiodynamic sweeps, coupon tests and field measurements in different Swedish municipalities. The results were compared with equilibrium calculations.
Coupons inserted in the distribution system are typically used to determine the corrosion rate associated with a specific metal; they provide a good estimate of the corrosion rate and allow for visual evidence of the scale morphology.
Learning Objectives. An understanding of basic relationships between lead and copper concentrations and important water quality parameters in drinking water. An understanding of the importance of corrosion by-products and scale properties on lead and copper release.
Lead and iron concentrations at the tap rapidly increase with water stagnation in the plumbing system, but ultimately reach fairly constant levels after 8 h or more. Copper levels rapidly increase with initial water stagnation, but can then decrease or continue to increase, depending on the oxidant levels.
This manual helps readers understand the factors that influence corrosion, assess corrosion-related impacts, and develop a strategy to implement and maintain effective corrosion control in the water distribution system.
1 oct. 2000 · The aim of this work is to assess the performance of different corrosion scales as effective copper corrosion inhibitors using synthetic waters and distribution system waters.
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