Currently utilizing 13 Distributed Temperature Sensing (DTS) devices, AP Sensing provides coverage in three different sections of the metro system: from Azadpur to Subhash Chandra Place and Naraina Vihar underground metro station, from Kalkaji to Vasant Vihar covering 10 underground metro stations, and Janak Puri to Palam and Indira Gandhi domestic airport underground metro station. The Fiber Optic Linear Heat Detection (FO LHD) system in each of these locations was set up with full redundancy. The system monitors and provides maximum temperature values in each zone (every 20 meters) and activates the alarm when temperatures in any zone exceeds the pre-determined value. Besides providing fire alarming capabilities, the system can activate the ventilation fans to extract smoke from tunnels

Join for free to read