The project saw the introduction of a newly constructed substation where Playfords were appointed as Principal Contractor to facilitate the introduction of this addition to St Georges Hospital High Voltage and Low Voltage electrical infrastructures.
Playfords were appointed as the Main Contractor to carry out the installation of two new 11kV / RMU/Transformer (Unit) substations, two new LV switchboards, one new generator changeover switchboard and two new LV generators, exhaust systems and bulk fuel storage tank as part of an HV/LV technical fitout of equipment within a newly constructed Substation. The substation was required to support the new Modular ITU building under construction as a separate project.
Taking full responsibility for the entire project delivery inclusive of the Health, Safety, Environmental and Quality aspects of the project, Playfords project managed key supply chain partners to ensure the specification parameters were achieved and the completed project remained on time throughout each key stage to achieve a critical ‘power on’ end date for the client team.
New HV/LV earth nests were installed along with equipotential earthing and the required lightning protection to the substation building structures.
Playfords were responsible for the manufacture and supply of new LV switchboards, manufacture and supply of new generator changeover switchboard and the supply and installation of the new LV generators using supply chain member expertise where required.
A comprehensive site survey of existing site cable routes using underground radar technology aided the installations of the required cabling and containments between existing and new systems and controls. This included the integration of the new sub-station into the hospital’s existing HV infrastructure utilising existing cable duct routes.
The installation of a new cam-bus control cabling installation throughout to serve the new generator/switchgear ComAp control system along with connection to the hospital site wide Scada control integration both also requirements of the agreed specification. With the adjacent Modular ITU project nearing completion, Playfords were required to afford a controlled attendance to allow the commissioning and testing between the newly installed ITU Main LV Switchboard and the new substation HV / LV systems
Other works completed throughout this critical new sub-station addition to the St Georges estate included the fit out of the new transformer / RMU enclosures including lighting and small power, the fit out of new LV switch room area including lighting and small power, the supply and installation of all HV/LV inter-tripping, the supply, installation, and integration of a new BMS system (extension to existing), the supply, installation and Integration of the fire alarm system, the supply and installation of a new door security system and the provision of new signage and posters to meet HTM requirements.
A new 66.3 kWp. Solar PV installation was also installed to the roof of the newly constructed sub-station by Playfords along with a steel maintenance access staircase and handrail system to the roof perimeters. The completed installation works saw comprehensive Operation and Maintenance manuals handed to the client team along with the necessary training for the hospital estates team members regarding the newly installed components. Safety signage installations throughout completed what was a crucial addition to the hospital HV/LV infrastructure with future proofing very much at the forefront of its completion.