With our infrastructure deteriorating at an ever accelerating pace,
municipalities are faced with the financial burden of replacing pipelines. The
establishment of priorities for replacement considers the critical nature of the
pipeline, the risk associated with failures and the age of the pipeline.
Technology is available to provide the operator with useful data that assists in
the decision making process. This paper will cover methods that are available
that assist the operator in assessing the condition of the pipeline, quantifying
the remaining life and the likelihood of corrosion failures. Specific pipeline
assessment techniques such as lose interval potential surveys, direct current
voltage gradient evaluation, acoustical monitoring, stray current evaluation and
soil assessment will be discussed. The applicability of these assessment
techniques in the evaluation of steel, cast and ductile iron and reinforced
concrete pipelines will be covered. As an alternate to immediate pipeline
replacement for some pipelines, corrosion control methods that can be applied to
existing steel, cast and ductile iron, and reinforced concrete pipelines will be
discussed. The application of corrosion control enables the pipeline operator to
extend a pipeline's operational life and to delay or eliminate the cost of
pipeline replacement. Corrosion control options extend from complete cathodic
protection to "hot spot" cathodic protection, pipe lining, stray current
mitigation systems and corrosion monitoring systems. Case histories will be
discussed describing methodologies currently being used by several municipalities
in implementing corrosion control technology. Includes tables.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 89 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 01/01/2000 |
