Case study demonstrates reduced AC interference in gas pipelines via phase permutation, highlighting an effective strategy to mitigate electrical corrosion risks.
High-voltage power lines can induce alternating current (AC) voltages on nearby gas pipelines, creating safety and corrosion risks. This article presents a French case study involving three gas pipelines exposed to severe interference from a 225 kV dual-circuit line over 17 km (10.6 mi).A Initial simulations predicted voltages approaching 200 V in the steady state; nine earthing systems were installed to reduce them, but these were not sufficient to meet design criteria. A further study examined conductor arrangement and led to phase permutation on the power line. Field measurements confirmed a major mitigation effect, with voltage levels reduced by about a factor of four and AC current densities significantly lowered.
No takes yet. Share an insight, caveat, or question.
Acevedo et al. (2026) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: