Anticipating, coordinating and innovating: the challenges of a future-oriented infrastructure
The story of Port-la-Nouvelle's expansion began in the early 2010s, at the instigation of the Occitanie Region, with the aim of modernising this strategic infrastructure. In 2021, the port concession was awarded to SEMOP Port-la-Nouvelle, marking the official start of the work. Recognised for its expertise in complex port infrastructure, Egis was called in by the concessionaire to design and supervise the works, which had to meet technical, environmental and economic challenges, from the very first phases for which it was responsible.
Anticipating uncertain technological needs
Floating wind turbines, which are still under development, come in a wide variety of models with specific constraints: heavy loads, variable float sizes, need for space for assembly and storage, etc. New port infrastructures need to be robust and flexible enough to adapt to future technological developments.
Coordinating the various players and meeting the expectations of the various stakeholders
SEMOP Port-la-Nouvelle must reconcile the requirements of public and private stakeholders. A partnership framework that requires rigorous coordination to reconcile divergent objectives: economic growth, respect for the environment and operational performance. This is all the more challenging as the port combines long-established activities (dry and liquid bulk) with other emerging activities related to marine renewable energy.
Respecting strict environmental constraints
The already active port site had to accommodate new infrastructure while minimising the impact on marine ecosystems. The dredging to a depth of -15.9 m, the construction of embankments and the building of quays are subject to strict environmental requirements and strict in-situ monitoring. Rigorous impact studies have also been carried out to ensure the harmonious coexistence of the port's traditional and new activities.
Managing tight deadlines and interlocking work phases
The timetable requires the infrastructure to be commissioned quickly, particularly in order to respond to national tenders for marine renewable energy. This requires meticulous organisation to effectively interlink several complex phases: construction of the seawalls, development of the quays and creation of the platforms, start of construction of the pilot wind turbines. Each stage must be completed within tight deadlines, without compromising the quality and durability of the structures.
