Several environmental conditions, such as aggressive
soil, use of dissimilar materials, and stray electrical
currents, can cause metal water mains to corrode.
This corrosion has been documented to occur as soon as
five years after a metal water main has been installed. The
authors explore various ways utilities around the world
attempt to protect their ductile-iron water mains from
leaks and breaks. Protective methods include coating,
wrapping, or some form of cathodic protection. During
the course of their research, the authors learned that the
success or failure of a given protective method often
depended on a specific set of circumstances. They learned
that corrosion engineers, utilities, and pipe manufacturers
have distinctive schools of thought about which method
provides the most protection. Because of the variety of
experiences reported by professionals in the water industry,
the authors recommend that a comprehensive study
be performed under a variety of conditions to help determine
which protective method works best with ductile-iron
pipe for a specific environment. Includes 55 references, tables, figures.
| Edition : | Vol. 95 - No. 11 |
| File Size : | 1
file
, 370 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 16 |
| Published : | 11/01/2003 |
