ABSTRACT
TELT tunnel is a long and deep tunnel with both technical, logistical and safety challenges. Additionally, as a bi-national project, TELT has the opportunity to combine the experience and good practices from Italian and French sides, plus the experience gathered from the reconnaissance tunnels. TELT had introduced in every contract “Common Operation Rules (COR)” that were presented in WTC 2019 Napoli. This guideline gives a practical set of rules defined by professionals from both countries, according to national regulations, best practices, and ground-based experiences. Those rules have been updated in 2023. On top of those common rules, TELT has set up a “Mission S” to share experiences between working sites to reach high-security standards for the project. This article presents both the update of the “Common Rules of Operation” and the “Mission S” set up by TELT on all the project work sites.
