March 2022, Vol. 249, No. 3

Features

Protecting Pipelines from Effects of Alternating Current

By Frank Onesto, CP3, Burns McDonnell   To meet the growing demand for natural gas, hundreds of new pipelines are being installed in the same corridors as high-voltage alternating current (HVAC) transmission lines. Although collocating these lines is a cost-effective option from a land acquisition perspective, it can lead to pipeline corrosion on and additional safety hazards.   High levels of alternating current (AC)-induced voltage have been considered a risk for humans and wildlife for years, but few imagined it could pose a threat to nearby pipelines. In recent years, a new threat has been identified – the risk of AC interference corrosion. This risk has caught the attention of both co

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