As of Friday last week, 105 of 684 abnormal loads had been successfully delivered to the site from Swansea Docks. Later this week we expect our contractor to begin delivering the turbine blades to site in convoys of up to three abnormal loads. Each blade is the lightest component at 11.3 tonnes, yet the longest component at 55 metres.
The smaller cranes, (LTM 1750 hydraulic boom cranes) are now working to install the first two tower sections of each turbine, known as the pre-assembly. So far seven of 76 of these have been installed, appearing as 37.2m high ‘stumps’. Here are some statistics about the crane, with an accompanying diagram for those of you who are interested:
- Rigged in TY configuration (Boom + Y guide super lift)
- Road weight = 108 tonnes
- Fully rigged weight = 300 tonnes
- Boom length for Pre-assembly = 52 meters
- Max Capacity in rigged configuration = 201 tonnes at a 7 meter radius
- Counterweight (Ballast) used = 174 tonnes
- Hook block weight = 4.5 tonnes
- Heaviest component for pre-assembly = Base tower = 83.3 tonnes at a 21.5 meter radius
In the Spring, once all 76 pre-assemblies are complete, the larger cranes will install the remainder of the turbine components. The project is expected to be completed by early 2017.
Please get in touch if you are concerned about the delivery convoys disrupting your travel plans.