Ring Main Unit Upgrades

For this project, the scope of work was to upgrade 4 existing ring main units (RMUs), from design through to completion.

As the existing RMUs had been purchased and installed in the early 1980s, they had reached the end of their service life. The original equipment manufacturer had released a notification that the equipment was not safe to be switched whilst energised.

We configured new ABB SafeRing RMUs to minimise site execution works and allow for the installation of remote operation in the future.  This allowed us to carry out the necessary upgrades to the switchgear while managing the initial capital expense within the allocated budget.

We coordinated the installation to proceed during scheduled downtime with several generator installations to maintain power to essential services whilst the work was being carried out.