ELECTROMECHANICAL INSTALLATION
THE CHALLENGE
To provide the permanent electromechanical equipment, for the whole project. The main difficulty was the installation of large and complex equipment in the tunnels and in more than 550 underground rooms, accessed only from the Beussingue portal alone.
Many suppliers and subcontractors were involved. The number of installation contracts were limited to simplify logistics
THE ORGANISATION OF INSTALLATION
Within Tunnel subproject and Terminal subproject, the Electromechanical installation Departments (DEM) were in charge of installing the electromechanical equipement for underground works, Sangatte area permanent works, and terminal,
Supply difficulties, in this long tunnel without intermediate access, led to unplanned operations. They were resolved by the memorable « Foire aux cantons » [a daily morning meeting where working groups bid for and agreed ‘work slots’] which allowed better traffic regulation by the control center.
IMPORTANT TEMPORARY LOGISTICS
Numerous workshops, locales and ad hoc temporary tools were designed, to facilitate the required installation rates, quality, safety and compliance with regulations.
- Temporary railway and road lanes, railway signage
- Viability equipment: lighting, sanitation, various networks, telephone, etc.
- Staff rooms (900 seats), offices, changing rooms,
- 650 m2 railway equipment maintenance workshop, specialized workshops, crane, 600 m2 general store
- 16 locomotives, 10 railcars, 400 platform cars, fuel station, specific assembly and handling equipment…
LOGISTIC OF THE MONTAGES IN TUNNELS
The base of the underground equipment assembly site was located on the « 360 zone » in Frethun, excepted the Permanent final railway works.
TERMINAL FITTING OUT LOGISTICS
The assembly base was located in the “340 zone” on the terminal. It included the logistics for the final track and tunnel catenary works.
THE FRENCH TERMINAL AND SANGATTE PERMANENT WORKS
The installation of the terminal and Sangatte’s equipment was undertaken in a traditional manner since it was possible to access independently and directly the various buildings or infrastructures.
Exceptional lifting methods were mobilized to place the NVS and SVS ventilation ducts in the shaft.