This paper addresses decision-making issues faced by most water utilities regarding their
water mains. An overview is provided to explain the difference between failure
management of small-diameter mains in distribution systems and failure prevention in
large-diameter transmission pipelines. The paper further describes past and on-going
research at the National Research Council of Canada (NRC) on these issues. A description
is provided for the application of fuzzy logic to assess failure risk of large diameter
transmission pipelines. Case studies are described to illustrate the application of a multivariate
time-exponential model to historical failure rates in small-diameter distribution
mains. The impact of time-dependent factors on water main breaks is demonstrated, with
special emphasis on the effect of various cathodic protection measures on the life-cycle
costs of water mains. Includes 22 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 310 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 16 |
| Published : | 06/17/2004 |
