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PRCI PR-145-111
- The Effect of Elevated Temperatures and the Environment on the Design of Cathodic Protection for Offshore Pipeline
- Report / Survey by Pipeline Research Council International, 01/01/1970
- Publisher: PRCI
$348.00$695.00
L51420e
Lockheed Marine Services
Need: The corrosion rate of offshore pipelines when subjected to elevated operating temperatures and various environmental conditions on the cathodic protection requirements in seawater needed to be determined.
Result: The objective of this research project was to determine the effect of elevated operating temperatures up to 250F (121C) and various environmental conditions on the cathodic protection (CP) requirements of offshore pipelines in 35 (1.7C) and 60F (16C) seawater. Offshore environments were simulated in laboratory and field tests conducted in order to observe the effect of increasing surface temperature on the -850 mV potential criterion (versus a copper/copper sulfate reference cell) and the current density required to achieve cathodic protection. This study was funded in two programs. The laboratory work in the initial program was done at Lockheed's Carlsbad, California, facility. The laboratory work in the subsequent project was done in Santa Clara, California. All the field work was done in a seawater lagoon in Carlsbad.
Benefit: The primary goal of this research project was to obtain laboratory and field test data from which a critical evaluation of the cathodic protection criteria currently used on offshore pipelines could be made.
Lockheed Marine Services
Need: The corrosion rate of offshore pipelines when subjected to elevated operating temperatures and various environmental conditions on the cathodic protection requirements in seawater needed to be determined.
Result: The objective of this research project was to determine the effect of elevated operating temperatures up to 250F (121C) and various environmental conditions on the cathodic protection (CP) requirements of offshore pipelines in 35 (1.7C) and 60F (16C) seawater. Offshore environments were simulated in laboratory and field tests conducted in order to observe the effect of increasing surface temperature on the -850 mV potential criterion (versus a copper/copper sulfate reference cell) and the current density required to achieve cathodic protection. This study was funded in two programs. The laboratory work in the initial program was done at Lockheed's Carlsbad, California, facility. The laboratory work in the subsequent project was done in Santa Clara, California. All the field work was done in a seawater lagoon in Carlsbad.
Benefit: The primary goal of this research project was to obtain laboratory and field test data from which a critical evaluation of the cathodic protection criteria currently used on offshore pipelines could be made.
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