To bring our technology to the other side of the globe, GIW partnered with Hua Hai, a Hong Kong-based company and previous GIW® Minerals customer with extensive experience in marine engineering systems, as well as dredge project manufacturing, construction, and integration. It’s a well-known process, but those at CWB wanted to build something more efficient and cutting-edge at a competitive price.
The TSHD hopper then stores this dredged material, and once it’s full, the TSHD then empties it by dumping it through bottom doors or using booster pumps to send the material ashore. These self-propelled dredges are equipped with suction pipes attached to drag heads, which act like giant vacuum cleaners, sucking up loose soil, clay, and gravel from the seabed. The folks at CWB are in the process of building a 6,000m³ trailing suction hopper dredge (TSHD). In fact, this is the case in China, where GIW engineers are currently working on providing a series of dredge pumps for the Changjiang Waterway Bureau (CWB).Ĭutting-edge tech and cost-effectiveness in China This whole-pump order marks the transition from European pump part supplier to fully qualified dredge pump supplier, a designation that will only spur more interest from global customers needing more efficient quality-focused pump designs. With 2,540mm impellers weighing 12t each, this is quite an undertaking, but it’s also an exciting opportunity for GIW. GIW experts are working closely with DEME professionals and a world-class overseas supplier to get the three GIW DWD 1250-2500 pumps to the Spartacus. After extensive full-scale testing, GIW presented a highly efficient pump design that provides direct fuel savings, free passage of large rocks, and a low Net Positive Suction Head, which allows the dredge to pump more slurry, long distances. GIW not only met DEME’s need but also set a very high standard. Outfitting this CSD was no easy feat: Known as Spartacus, this massive self-propelled dredge was designed to be capable of a dredging performance 50% greater than any of DEME’s existing large CSDs with the three pumps able to generate pressures of up to 45bar. Unlike other dredges, though, this design requires three giant double-wall dredge pumps behind the cutter head to suck up an unprecedented quantity of fragments. Like other CSDs, this one is equipped with a rotating cutter head for cutting and fragmenting hard rock and soil.
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