Department Of Fisheries Tender

Quay wall

Underwater Visual inspection of substructure to identify defects using patented Underwater Remotely Operated Vehicles (ROVs)with High definition Live streaming during inespection, Measuring of dimentions of defects found (width,length, depth) with using suitable enhancement tools in terbid water, visual inespection and photographyof piers above water for any visual defects/cavities etc processing all captured data to extract better quality defect videos. Post inspection visual analysis of raw video including depth,position tagging and identification of any visible concerning piont. Presentation of all data and defects on a highly intractivedashboard with "Click to view" feature and localized defect vidios alonge with depth, position tagging, defect heat map, key results and obervations on map. Supplying soft copy of report for future inespection data for comparison with 3 copies of hard copy of report. Underwater inspection work shall be executed by agency having atleast 5 years of experience working with ROVs and completed atleast 15 bridge inspection works unsing ROVs. PRE or POST Work

Scouring analysis around the piers using 3D imaging SONAR (1.35 Mhz, with Mosaic, 20m range) or Echosounder (variable frequency, 200 kHz band centred at 0.5 Mhz, must be integrated with AHRS, atleast measure 0.1 m range). Payload to be picked depending on depth on water and feasibility. Final output to be visible in form of a 3D image.