Two Fayat subsidiaries involved: Razel-bec and SATELEC
In addition to the civil engineering package (creation of emergency exits, rehabilitation of equipment rooms, creation of safety refuges, etc.) and fire protection of the structure, ventilation and fire safety systems were installed by SATELEC with SPIE IDF: fitting of sensors, increasing extraction rates, smoke ejection control and command; energy system overhaul, addition of extra exits, improvement of centralised technical management system, etc. as well as preventive and corrective maintenance.
Fayat Group is now an expert in tunnel compliance work.