We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Copper pitting in chlorinated, high-pH potable water.
- Authors
Sarver, Emily; Dodson, Kara; Scardina, R. Paolo; Lattyak-Slabaugh, Rebecca; Edwards, Marc; Nguyen, Caroline
- Abstract
Copper pitting corrosion in potable water systems poses economic and environmental problems associated with pinhole leaks. In the laboratory it has proven difficult to reproduce the precise conditions that create pinholes; to date, aggressive water quality (i.e., chlorinated water of high pH and low alkalinity) is the only cause that has been replicated as it occurs in potable water systems. Pitting in this type of water is accelerated with higher chlorine, flow velocities, and durations and is inhibited by high levels of silica and phosphate. Although only results from forensic testing (e.g.,pipe loops) can be interpreted with complete confidence, the numerous limitations of such testing might be overcome via complementary studies using sophisticated electrochemical methods once aggressive waters are identified. Under worst-case conditions, pipe loops can reproducibly create pitting in relatively short times and on very short copper tubes.
- Subjects
COPPER content of drinking water; DRINKING water purification; CORROSION &; anti-corrosives; WATER quality; COPPER; COPPER tubes
- Publication
Journal: American Water Works Association, 2011, Vol 103, Issue 3, p86
- ISSN
0003-150X
- Publication type
Article
- DOI
10.1002/j.1551-8833.2011.tb11423.x