hiring of rov for inspecting the rehabilitation works of cellular wall and exploring the potential source of leakage from trc , inspection of underwater portion of joints of cellular wall at joints of b4-b5 and b5-b6 , tail race channel - cellular wall at trc side ( length around 60m and water depth varying around 20 m to zero ) , cellular wall - key / apron in stilling basin side ( length around 60m and water depth varying around 6m ) . , inspection of underwater portion of stoplog groove and bottom seal beam of spillway no . 2 in closed stage , water depth around 25 m , length 2 x 25 m + 11m ( seal beam ) . , under water inspection of intake unit 1 for a span between bell mouth to stop log . detailed inspection will be carried out after observation in first phase of inspection . , analyzing the data by planys assessment dashboard ( pad ) software indicating with inspection location , depth , positioning tagging , defect heat map , key results , observation on a map and providing the details visual analysis in the software report and hd video in the form of soft copy . , mobilisation and demobilisation charge in all respect .