Case story

Submerged Stormwater Pipe Sediments

Australia, Brisbane

In a first of its kind application in Australia a specially designed remote-controlled underwater dredger was deployed to excavate and clean out a blocked stormwater drain discharging into the Brisbane river.

 The submerged location of the outfall of the pipe required the dewatering be conducted from barges moored in the Brisbane river. The challenge faced by the specialist contractor was how to contain sludge excavated from a blocked stormwater pipe by a remote-controlled underwater dredger operating in constricted conditions in a location highly visible to the public, and required to meet stringent environmental and operating mandates.

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