Soil corrosion monitoring near a pipeline under CP

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Electrochemical noise (EN), linear polarization resistance (LPR), and harmonic distortion analysis (HDA) were used with three-electrode probes to monitor the corrosion occurring in soil in dry and wet conditions near a gas pipeline under cathodic protection. The test site was a cathodic protection (CP) test station where impressed current CP was applied to a 2 in. (5.1 cm) diameter FBE coated steel pipe using an 84 in. (0.2 m) TA-2 high-silicon cast iron anode. Electrochemical measurements were made at three locations, two inside the CP field and one outside the CP field. Electrochemical measurements were first made with the CP ... continued below

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Bullard, Sophie J.; Covino, Bernard S., Jr.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, Margaret; Locke, M.L. (NW Natural) et al. January 1, 2005.

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Electrochemical noise (EN), linear polarization resistance (LPR), and harmonic distortion analysis (HDA) were used with three-electrode probes to monitor the corrosion occurring in soil in dry and wet conditions near a gas pipeline under cathodic protection. The test site was a cathodic protection (CP) test station where impressed current CP was applied to a 2 in. (5.1 cm) diameter FBE coated steel pipe using an 84 in. (0.2 m) TA-2 high-silicon cast iron anode. Electrochemical measurements were made at three locations, two inside the CP field and one outside the CP field. Electrochemical measurements were first made with the CP system off to establish the baseline corrosion and then with increasing levels of CP. The degree of protection was based on polarized potential and the adequacy of protection was determined by depolarization measurements. CP of an adjacent pipeline did not affect the measurement of either corrosion rate or pitting factor when using buried soil corrosion probes and the EN, LPR, and HDA techniques.

Notes

Publisher - CD Rom of Proceedings: Natural gas technologies 2005 : what's new & what's next, GTI-04/0252, 2005, paper in track 9

Source

  • Natural Gas Technologies 2005, Lake Buena Vista, FL, Jan. 31-Feb. 2, 2005 (Natural Gas Institute, Des Plaines, IL)

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  • Report No.: DOE/ARC-2005-082
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 899243
  • Archival Resource Key: ark:/67531/metadc882145

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 2005

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 2:04 p.m.

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Bullard, Sophie J.; Covino, Bernard S., Jr.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, Margaret; Locke, M.L. (NW Natural) et al. Soil corrosion monitoring near a pipeline under CP, article, January 1, 2005; (digital.library.unt.edu/ark:/67531/metadc882145/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.