Discharge operations, discharge installations

英文Discharge operations, discharge installations

中文 (征集中)


When the vessel has to be discharged, jet pumps are used in the hopper to dilute the spoil so that it can be pumped ashore or discharged o the seabed through bottom doors. Occasionally, accurate placement of the material at great depths is possible via the suction pipes. Fixed means of transporting dredged soil requires a floating pipeline from ship to shore, a powerful pump and a special link between pipeline and vessel – the bow coupling. Fixed and flexible models are in use. Fixed bow coupling has one degree of freedom (pitch), the flexible one has two degrees of freedom (pitch and turn). The flexible bow coupling can handle difficult sea conditions and reduces loads on the floating pipeline. The mixture can also be jetted forward over the ship bow via a mixture jetting nozzle (rainbowing)



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