________________ Tunnel boring machines with larger diameters are unique units that are specifically designed and built for the requirements of a particular project. Nevertheless, they can be used again after project completion if the conditions are suitable. However, a systematic examination, professional refurbishment and, if necessary, an adaptation of individual components in line with the new project conditions must be carried out before reuse in other projects.
After these tasks have been completed professionally, the machines can be used again without problem. Purchased or rented TBMs or individual equipment components can be rebuilt directly on the jobsite.
Global network allows fast refurbishment
Herrenknecht addresses the individual project requirements with its global network of production and service locations. This saves time and costs, without impairing the performance of the TBM. Refurbishment can take place under the supervision of Herrenknecht or by previously trained project staff, depending on the requirements. Special tools and equipment will be supplied flexibly on request.
The first step before a TBM can be reused is a comprehensive analysis. The needs and challenges of the new project are aligned with the condition and design of the TBM. Working closely together with the project managers, Herrenknecht draws up a detailed calculation of costs and a realistic schedule for the systematic disassembly, refurbishment and / or modification of the tunnel boring machine. This includes engineering and operations planning (sequence planning) and a list of the required skilled personnel, spare and wear parts, and (special) tools and equipment. If necessary, further TBM adjustments must be made in line with the specific project requirements, for example, to the excavation diameter, the geology, the tunnel face support, the removal of the excavated material or the tunnel lining.