The NTSG Program Manager, Giulio Pini, presented on Wednesday 22 September a project created for Metropolitane Milanesi s.p.a. at the “Network Services” conference. The “OF” Sewerage system, patented by NTSG, was applied to a stretch of sewer pipes with an extension of approximately 9.5 km and provides for monitoring of the structure with optical fibers. Also in this case took care of the communication.