Membrane-based electrochemical sensor for corrosion monitoring in natural gas pipelines

J. Beck, D. M. Hall, M. Ziomek-Moroz, S. N. Lvov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

A solid-state sensor has been designed that uses an ion conducting membrane to perform conductivity and corrosion measurements in natural gas pipelines up to 1000 psi (6.9 MPa). Changing gas composition between nitrogen, methane, and a methane/carbon dioxide blend was found to have little impact on the membrane conductivity. Corrosion monitoring was also performed using linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) for X-65 carbon steel in gas at 60 °C for dew points between 1 and 18 °C. Corrosion rates ranged between 0.01 and 0.1 μm yr-1 and increased with increasing dew point. Corrosion rates were found to depend strongly on the water content or relative humidity but were largely independent of total pressure. Addition of 5 % vol. carbon dioxide was found to slightly increase the measured corrosion rate.

Original languageEnglish (US)
Title of host publicationSelected Proceedings from the 231st ECS Meeting New Orleans, LA - Spring 2017
PublisherElectrochemical Society Inc.
Pages681-691
Number of pages11
Edition11
ISBN (Electronic)9781607685395
DOIs
StatePublished - Jan 1 2017
Event231st ECS Meeting - New Orleans, United States
Duration: May 28 2017Jun 1 2017

Publication series

NameECS Transactions
Number11
Volume77
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

Other231st ECS Meeting
CountryUnited States
CityNew Orleans
Period5/28/176/1/17

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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