Gas Pressure Build-Up in Aluminum Conductor Cable

The chemical reaction between aluminum and water may be of particular importance when it occurs within the strands of an aluminum conductor power cable. There is evidence that the result of such a reaction may be the build-up of hydrogen gas pressure to magnitudes which are impossible to contain within existing splices or connectors. The venting of such gas pressure in the splice or connector may not in itself create a serious electrical problem. However, the resulting contamination due to the simultaneous expulsion of water may create serious problems. This progress report will present preliminary findings regarding this gas pressure build-up phenomenon and is aimed at creating a more widespread awareness of the problem.