Multibeam echo sounder protects infrastructureMultibeam echo sounder protects infrastructure<div class="ExternalClassB2F6550484EA4A4C90AF2077BD426B00"><p>Metro Vancouver is using upgraded technology to help protect its numerous marine crossings for both water and sewer mains and outfalls located under the beds of the Fraser River and Burrard Inlet. </p><p>A new Multibeam Echo Sounder bathymetric survey system is being used year-round to assess the region’s water and sewer main crossings to ensure that they are able to withstand annual spring freshets and winter king tides, which generate scouring action, and other ongoing marine activities, which could cause significant harm to the regional infrastructure.</p><p>The multibeam technology sends thousands of laser signals over a wide river/sea bottom to provide an accurate and detailed map of any potential problems or hazards to the pipes and outfalls, such as sea and river scour action and pipe cover displacement or damage. A recent scan, for instance, identified a damaged diffuser at the Annacis Island Waste Water Treatment Plant outfall, which was immediately repaired.</p><p>This new technology replaces a single-beam echo sounder, which was more limited in scope as it only specifically measures along the pipe. </p></div>http://www.metrovancouver.org/metroupdate/PublishingImages/issue36-multibeam.jpg2017-10-30T07:00:00ZGP0|#86cebc24-450e-46cf-b0a6-2d37736f0596;L0|#086cebc24-450e-46cf-b0a6-2d37736f0596|Issue 36;GTSet|#d14ffe11-45dc-48fb-8684-ff109cf15a74<div class="ExternalClassADBCD3B340BA4548B5995FE220A91746"><p>​Metro Vancouver is using upgraded technology in the form of a Multibeam Echo Sounder bathymetric survey system to help protect its numerous marine crossings for both water and sewer mains as well as outfalls located under the beds of the Fraser River and Burrard Inlet.</p></div>0River bottom multibeam survey of Cambie Richmond Main under the Fraser River