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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

Mobile sensor tests conducted using the SwRI metering research facility
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 lcaseres@swri.org or (210) 522-5538, or James F. Dante, at jdante@swri.org or (210) 522-5458.

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Southwest Research Institute^® (SwRI^®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

January 03, 2013