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Mitigating Copper Pitting Through Water Treatment
In July 1978, the first of about 25 pitting corrosion failures occurred in the residential plumbing systems of private homes and condominiums in the Highland Greens subdivision of Fort Shawnee, Ohio. An investigation showed that the water distributed to the community promoted and supported the pitting corrosion. Treatment of the water supply by addition of sodium carbonate to increase the pH and to eliminate the dissolved carbon dioxide was introduced. Pitting attack diminished almost immediately, and new reports of leakage ceased within six months. Two corrosion test loops containing 100 tube specimens were exposed to raw and treated waters. The 50 specimens exposed to the treated water showed no pitting attack. About 20 percent of the 50 tubes exposed to the raw water displayed major pitting, with lesser but still observable attack in the remainder of the tube specimens.
Mitigating Copper Pitting Through Water Treatment
In July 1978, the first of about 25 pitting corrosion failures occurred in the residential plumbing systems of private homes and condominiums in the Highland Greens subdivision of Fort Shawnee, Ohio. An investigation showed that the water distributed to the community promoted and supported the pitting corrosion. Treatment of the water supply by addition of sodium carbonate to increase the pH and to eliminate the dissolved carbon dioxide was introduced. Pitting attack diminished almost immediately, and new reports of leakage ceased within six months. Two corrosion test loops containing 100 tube specimens were exposed to raw and treated waters. The 50 specimens exposed to the treated water showed no pitting attack. About 20 percent of the 50 tubes exposed to the raw water displayed major pitting, with lesser but still observable attack in the remainder of the tube specimens.
Mitigating Copper Pitting Through Water Treatment
Cohen, Arthur (author) / Myers, James R. (author)
Journal ‐ American Water Works Association ; 79 ; 58-61
1987-02-01
4 pages
Article (Journal)
Electronic Resource
English
Plumbing Systems , Lima, Ohio , Copper , Carbon Dioxide , Sodium Carbonate , Water Treatment , Well Water , Costs , Corrosion , pH , Dissolved Oxygen
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