Not to be confused with a suction nozzle that most highbankers use that pushes material through the hose The impellor to the pump housing, and will not tolerate trash being put through itĪ trash pump can not and will not create the pressure a jet log (suction jet) utilizes to create a vacuume to lift material up the suction hose Where as a centrifugal pump has a very tight tolerance. Some trash pumps don't use impellors, if they do it's a very loose tolerance The dredge can easily move to one side of the channel to allow for vessel movements.The 2 big differences between a trash and a centrifugal pumpĪs Walter says, a trash pump will allow a certain amount of small 'trash' (rocks, sticks, sand, twigs) to pass through without damaging the impellor or internals The side anchor ropes remain on the sea bed while the dredge is in operation, which will minimise any inconvenience to other boating traffic through the affected channel areas. The dredge can dredge up to 120m3 per hour (in optimal conditions), dredge to a maximum depth of 6.5 metres, and pump the material up to 1,000m in the distance.Ī three-wire anchoring system is used to manoeuvre the Nu Discovery, and the operator can set up to cut the entire channel width, including any batters, in just one cut width. The Nu Discovery is a 227kW (305hp) 250mm three-wire cutter suction dredge. Nu Investigator is the latest fleet and has just completed initial trials and testing at Neumann Contractors, Corridor Sands plant at Woongoolba.Nu Discovery has recently completed work in the Iluka Boat Harbour and Entrance Channel Dredging project,.Nu Explorer(original dredge in the Nu Explorer Series) has been working in the OTML Mine in PNG for the last two years,.There are three dredges in the Nu Explorer series that currently complement our fleet (a total of 9 Cutter Suction Dredges): The Nu Explorer series of dredges have been designed and constructed by Neumann Contractors to specifically suit the typical dredging conditions encountered in projects like the Iluka Boat Harbour channels. The Nu Discovery is a 250mm cutter suction dredge from the Nu Explorer series of dredges.
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