Left:
Cyclone container - refurbished condition
these changing standards, ensuring compliance and avoiding penalties. Last, but not least, refurbishment provides an
opportunity to optimise the design and layout of STPs, leading to improved operational efficiency. Upgrading equipment, implementing automation systems, and optimising processes can result in reduced energy consumption, increased flow rate and enhanced overall performance.
ADVANTAGES: SUSTAINABILITY, COSTS AND SCHEDULE Due to the global need of sustainability, it becomes more and more important to exhaust the life cycle of products to the maximum. For this reason, project owners are also placing increasing importance on being offered refurbished plants, so they can equip their jobsite as resource-saving as possible. So, refurbishment of STPs and other jobsite installations are a big step into the future of sustainable jobsites. Refurbishment not only brings environmental
advantages, it also brings a clear economic advantage for customers, project owners and suppliers. The supplier saves costs because refurbishment is significantly cheaper than manufacturing a new plant. Due to the lower costs for the supplier, the plant can be offered to the customer/project owner at a more favourable price, so that all parties involved have a cost advantage as a result. Nowadays, time plays an exceedingly important role during tunnelling. Strict adherence to time schedules is
necessary to avoid jeopardising an entire project. As a result, it is crucial to minimise the time until the plant is ready for operation. The refurbishment process provides a clear time advantage compared to manufacturing a new facility.
OUTLOOK An STP is a key element in the overall slurry operated tunnelling process with regard to safety, performance and costs. Increasing stringent environmental regulations mean that the performance of STPs is becoming more important with respect to sustainability.. Challenging ground conditions, increasing regulations,
tighter schedules and performance growth will increase and influence demands on STPs. Therefore, it becomes increasingly important to refurbish used plants for sustainability, cost efficiency as well as time management benefits. This paper highlights several clear benefits of STP
refurbishment in these fields, making it a significant advantage for a comprehensive tunnelling process. Herrenknecht adapted its processes to this market trend to meet customers’ and its own aspirations for more sustainable tunnelling. There are already several success stories in our tunnel
business of those who have embraced refurbishment and the circular economy. It’s a win-win for the environment and the economy. Ultimately, by embracing the circular economy and incorporating refurbished products into our purchases, we can work towards a more sustainable world for generations to come.
REFERENCES ● Herrenknecht AG, Homepage (2023)
URL:
https://www.herrenknecht.com/en/services/disassembly-and-rebuilding/
● Herrenknecht AG, Homepage (2023) URL:
https://allaround.herrenknecht.com/en/
issue-6.html
● ITA tech guidelines Rebuild (2019) URL: ITAtech Guidelines on Rebuilds of MAchinery for Mechanized Tunnel Excavation - ITA Activities (
ita-aites.org)
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