Corrosion Testing and Research


Sensors and Corrosion Monitoring
Mobile Sensors for Gas Pipelines


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Corrosion—Time of Wetness Sensors

Mobile Sensors for Gas Pipeline

Multielectrode Array Sensor (MAS™)

Coating Degradation Sensor (CDS)

Anodes for Cathodic Protection

Subsea Pipeline Pads

Water in gas pipelines sometimes happens as a result of a several factors including:

  • Operating conditions

  • Temperature variations

  • Gas composition

  • Gas flow rate

  • Variations in the vertical position of the pipeline

image of mobile sensor tests conducted using the SwRI metering research facility   image of metering research facility schematic

Mobile sensor tests conducted using the SwRI metering research facility


image of sensor extraction after traveling through the metering research facility pipeline


Sensor extraction after traveling through the metering research facility pipeline


Metering research facility schematic


Mobile Sensors for Gas Pipelines

The accumulation of water in a gas transmission pipeline can promote corrosion and lead to failure of the pipeline. Southwest Research Institute (SwRI) engineers perform modeling to determine locations where water accumulation is most likely to occur. The detection of condensed water using a mobile sensor can provide additional information that can be used to assure safe operation.

  • Mobile sensors can be introduced into the gas stream and identify locations of actual water accumulation and internal corrosion

  • Determining locations of water accumulation and relative corrosion rates could reduce the total number of required excavations for internal corrosion assessment

  • Sensors are robust to tolerate gas pipeline operating pressures and movement in the pipeline

  • Mobile sensors can be programmed for long-term stationary monitoring or single-pass mobile inspection

For more information about mobile sensors for gas pipelines, or how you can contract with SwRI, please contact Leonardo Caseres at or (210) 522-5538, or James F. Dante, at or (210) 522-5458.


Contact Information

Leonardo Caseres

Mobile Sensors for Gas Pipelines

(210) 522-5538

James F. Dante

(210) 522-5458

Related Terminology

corrosion research

pipeline corrosion


corrosion sensors

corrosion life prediction

stainless steel

laser Raman spectroscopy

corrosion monitoring

cathodic protection

microbiologically influenced corrosion

Related Information

Assuring the Integrity of Mechanical Systems

Corrosion Engineering, Science and Technology Journal

| Materials Engineering Department | Mechanical Engineering Division | SwRI Home |

Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 9 technical divisions.

August 07, 2014