As part of a safety review, two independent metal structures and several reinforced concrete infrastructures are undergoing structural recalculations and seismic analyses in order to strengthen the safety and sustainability of the whole.
4000 hours of study
France
Nuclear
Orano
Faced with growing requirements in terms of safety and regulatory compliance, an industrial site must conduct a safety review of its structures. The installations concerned include two independent metal structures and several reinforced concrete infrastructures. The objective: to reassess the solidity and stability of these structures by taking into account the natural phenomena likely to stress them (earthquakes, winds, significant snowfalls). The studies are based in particular on spectral modal seismic analyses and on scenarios of accidental climate events.
The volume of studies, estimated at 4,000 hours, includes the detailed recalculation of each load-bearing element, the updating of simulation models and the verification of anchors and assemblies. This approach must ensure the sustainability of the infrastructure and protect the teams working on site. In addition, it provides a precise vision of the capacity of each lot (metallic or concrete) to withstand the constraints imposed by its operation and by possible extreme situations. The final result makes it possible, if necessary, to adapt maintenance plans and to plan possible reinforcement operations.
The customer must guarantee the safety of its installations and comply with current standards, while taking into account new risk factors (seismic evolution, climatic events). He is looking for technical expertise capable of precisely recalculating the strength of two metal structures and several reinforced concrete structures, by integrating spectral modal seismic analyses and accidental load scenarios (snow, winds). The aim is to confirm or improve the overall robustness of the site.
Perform an exhaustive recalculation of metal and reinforced concrete structures.
Evaluate seismic and climatic impacts according to new scenarios.
Secure and maintain the operation of the site within a demanding regulatory framework.
This project mobilizes multidisciplinary skills, ranging from civil engineering to structural mechanics, including applied seismology. Engineers perform advanced modeling to test different load combinations (normal and accidental). The results make it possible to validate the stability of the structures, to identify possible weak points and to propose reinforcements if necessary. The main challenge is to guarantee a high level of safety while controlling study costs and deadlines.
Update calculation models and analyses to validate compliance with standards.
Integrate earthquake, snow, and extreme wind scenarios into studies.
Establish a reinforcement plan, if necessary, to make the farm sustainable.
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