|Rampion Offshore Substation
Earthing Risk Management was asked by E.ON to review the lightning protection system (LPS) design proposal for the Rampion Offshore Platform (designed by others) as there was concern over its suitability. Being an offshore installation, the platform was very exposed to lightning strikes.
ERM was provided with a 3D digital model of the offshore platform and details of the lightning protection design that had already been installed. A 3D model of the platform was constructed using specialist lightning protection software and a rolling sphere analysis carried out to determine whether the existing lighting protection system provided adequate protection to the platform. The analysis showed that some structures and cable systems were still exposed to lightning strikes so LPS components were added and tested in the model until a cost-effective design that gave full protection was achieved.
This project presented several challenges including: