Proven transmission pipeline diagnostic tools developed to obtain an accurate
evaluation are essential in a bottom-up condition-based asset management approach.
In addition, without prior information on the actual existing condition of an essential
pipeline, it is very difficult to determine how to effectively interpret the severity, and
future decisions required, after an unexpected pipeline service interruption.
The "Remote Field Eddy Current / Transformer Coupling" electromagnetic
inspection method is capable of detecting prestressing wire condition in concrete
pressure pipes 24" diameter and larger and has a proven record for accuracy in
identifying baseline pipeline conditions.
Combined with a proven leak location survey specifically developed for 12' and
larger diameter pipes, all ferrous and non-ferrous transmission pipelines can now be
assessed to determine advanced stages of deterioration through the identification and
localization of each and every leak of any magnitude. The Sahara® leak survey pinpoints the location and estimates the magnitude of leaks
in pipelines of any material construction type. Inserted into a live pipeline, the
tethered sensor head identifies and signals each leak as it is found, facilitating accurate
surface locating for subsequent rehabilitation.
These non-destructive evaluation methods enable the selective repair or replacement
of distressed and deteriorated pipe sections, and can alleviate the prohibitive cost of
complete pipeline replacement. Repeat inspections and surveys can then be used to
determine deterioration rates for effective maintenance programs to maintain
acceptable levels of water supply.
Monitoring critical water pipeline assets for signs of deterioration, either through leak
monitoring programs or active corrosion monitoring without the prior knowledge of
the baseline condition can lead to false sense of security. Utilizing an effective
combination of leak surveys and electromagnetic inspection identified in this paper
provides a system of determining current baseline conditions upon which further
pipeline rehabilitation or monitoring programs can be properly designed and
implemented. Includes 6 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 2.4 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 12 |
| Published : | 09/01/2006 |
