tunnel safety

This paper introduces a large-scale distributed fiber optic sensing (DFOS) network inside the tunnel lining of a highway tunnel currently under construction in Austria

distributed fiber optic sensing has become more popular in tunneling applications….This paper introduces a novel sensing and evaluation concept, which combines DFOS strain measurements and geodetic displacement readings for distributed shape assessment along curved structures, such as tunnel

The Riyadh Development Authority recently executed one of the largest metro projects within the GCC region. The Riyadh Metro has 85 stations and 6 lines, covering approximately 177 km in total. AP Sensing was chosen to monitor this very prestigious infrastructure

Eysturoy tunnel is the world’s second-longest underwater tunnel….AP Sensing’s fiber optic Linear Heat Detection Series (N4387B) is one of several advanced technologies included in the tunnel in order to ensure its safety.

a truck filled with cardboard caught fire inside the Eisenhower-Johnson Memorial Tunnel in CO. What could have ended up being a major disaster was resolved in three hours. Thanks to the fiber-optic fire detection system there were no casualties nor damage to the tunnel structure