NOVEMBER 2020 ROV GENERAL VISUAL INSPECTION AND SONAR SURVEY OF WATER FILTRATION PLANT

AUS-ROV was commisioned to undertake structural assessment of a water filtration plant in Sydneys South East. The variability in the untreated raw water was cause for concern in reliability of high definition video camera and hence 2D multibeam imaging sonar was used in conjunction with. Combining the multibeam survey of concrete surfaces with a visual camera follow up on identified defects provides a significant time saving methodology of inspection meaning we don’t waste days on site looking at structures through murky water at close range. The quality of the sonar image in relation to a deviation in the concretes surface is demonstrated in the below comparison between sonar image and video image.