DOP Submersible dredge pumps

Mining operations at huge dredging depths are no effort at all


Location: Asia

Period: start Q2, 2017

Product type: DOP450L with sand mining head

Contractor: NN

DOP450L mining sand at sea

The building industry needs a continuous supply of sand. As the near shore supplies are drying out, dredging is done at deeper concessions. The submerged DOP pump is the right tool for the job as it reaches high mixture concentrations in these circumstances.

As sand is mined at -70 m, the dredging system has been well considered. The DOP450L, its hydraulic drive hoses as well as the jet water and mixture hoses are guided and hoisted by 2 dedicated gantries, both based next to each other. On deck, a diesel hydraulic power pack is located to drive the DOP450L, and a separate diesel driven jet water pack supplies pressurized water to the sand mining head.

The DOP450L is lowered into the sea.

To keep an eye on the production process, the DOP was fitted out with a pressure indicator, speed indicator and dredging depth measurement. Damen delivered the dredging system as one dredge package including start up assistance by a field service engineer.

The mined sand is loaded in a barge.