For the three campaigns on the Alstom Halliade project, Hughes SSE supplied both an offshore diving team and a WROV team.
Two separate DP2 vessels were used on the project.
With assistance of the work class ROVs the following tasks were completed:
Cleaning between Annulus and jacket leg of marine growth
J tube removal and installation of new J tube
Remote Mattress installation using WROV on crossings and cable touch down areas
Jacket Stopper plate removal
Installation of Cathodic Protection earthing straps
Live cable survey including Depth of burial