Gratte Brothers was appointed General Contractor to deliver the design, build and fit out of a 16MW data centre across four phases. Inclusive of mechanical, electrical and civil, structural and architectural (CSA) packages, this initial phase brought the first of four data halls/technical suites online.
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Kao Data KLON-06 Phase 1
Project Information
- Client:
- Kao Data
- Main Contractor:
- Gratte Brothers
- Sector:
- Data Centres
- Services:
- M&E, CSA
Civil, Structural and Architectural Requirements
The CSA elements of the project included structural steelwork, construction of an elevator shaft and stairwell, white walls and ceilings, riser cupboards, roof and cladding alterations, specialist floor painting and fit out of office space in addition to ground works. This was all achieved whilst ensuring all building control and fire-related legislation was met.
Our temporary works team ensured that all interim works, which included bespoke scaffold solutions, excavations and site setup were recorded and operated to ensure the safety of all project stakeholders.
Prefabricated Elements
Prefabrication was an important element of the installation. In plant rooms feeding two of the data halls, the pump skids and inverters were delivered together with everything below the 4 flanges prefabricated.
The two pressurisation units also came as one skid with a pressure sensor automating unit refill. BMS, leak detection, fire alarm and primary and secondary electrical systems are all supplied from this plant room.
Power and Data Supply
A dual power supply is considered industry best practice to ensure no disruption in a main power outage. Three generators form an alternative power supply, with the units providing over 9MW in total. Each generator has a dedicated switch room, with immense extractors built on the exterior.
Multiple sub-stations form the main HV intake switch rooms, which feed the existing supplies and split the existing HV into a dual supply for the switchboard panels. The whole building is served from the main HV, splitting to the various clients and converting to LV for energy purposes throughout the building.
The CRAC units installed in the switch rooms work on both condenser water and internal refrigerant, processing four litres of water a second. If a unit fails, the other automatically can process eight litres a second.
All pipework for the dry air coolers and condensers is stainless steel and was also prefabricated at our in-house facility.
Four technical suite switch rooms installed during this phase provide a visual representation of the exemplary work our team delivered.
Each room’s LV switchgear via a busbar is colour-coded, allowing for easy identification and providing each room with a unique identity.
Logistics Delivery
With no direct route to deliver the plant via the ground floor during the project, a temporary platform on the first floor was constructed, enabling a direct entry point for the project.
It’s strategically placed in the north end so this platform can remain on the project for the duration of the phases.
The success of Phase I means that Phases II, III and IV are secured projects for Gratte Brothers and will see the remaining three technical suites come online.
