| Résumé : |
The major oil and gas companies in Saudi Arabia and the Gulf Coast Countries (GCC) own and operate an average of more than 33,000 km (20,000 miles) of oit and gas pipeline networking systems. Due to the differences in the geographical area of the region, the service life, operations, and maintenance costs of these pipeline networks vary and depend on the location of the pipeline. These cross-country pipeline locations run from East to West, North to South, and vice versa. The trunklines and the flowlines can be divided into two main exposure environments : dry sand areas and wet sand areas.
These existing pipelines are between 40 and 50 years' old, and the average design life span is between 20 and 25 years. The external protection coating systems applied to these pipelines varied from old cold-petroleum tape wrap to hot coal tar enamel (late 1950s—early 1980s), liquid coating, and fusion-bonded epoxy (FBE) as a single-coat powder coating from the mid-1980s to date, including three-layer polyethylene (3LPE and 3LPP) for cross-country pipelines. Flowever, the internai protection was not implemented until mid-1980s, with liquid coatings, first in the field, and FBE powder coatings, by shop application, afterwards, when the FBE powder coating became the dominant system in the pipeline coating indus-try. This article gives background on the gener-al performance of ail of these coatings and a subsequent inspection program to survey performance, focusing on FBE coating systems. |
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Performance on desert pipeline : Overview and options for rehabilitation in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 12 (12/2013)
