Tender For execution of signaling & telecommunication work in connection with: (1) interlocking of manned lc gates no. dd-62 at km 967/8-9 (drz-gudm) of raipur division, (2) improvement of bridge no. 380 (rub) through provision of cover shed in approach road & switch room & sump well, (3) provision of dual detection system in automatic signaling for reliability improvement, (4) reliability improvement of signalling system over raipurdivision..