Development in Dredge equipment in the last decade Ruud Ouwerkerk and Sergio Ooijens Dredging 2012 , San Diego, 2012
A decade of progress Technology push and market pull Project demands Higher efficiency Land reclamation New technologies Higher accuracy Beach reclamation For example: Higher uptime Port construction Larger vessels Etc. Waterway Improved maintenance dredging Land reclamation installations Regulations Lakes and reservoirs Etc. Project constrains Mining Etc. Environmental Offshore dredging This presentation intends to illustrate a few items
Land reclamation and port construction High volumes and low cost price Economies of scale: larger vessels with higher technologies. Leading to a 50% reduction in USD/yr 3
Economies of scale
Larger hoppers with new technologies: The 40,000 cubic yard Congo River with a one man bridge, using artificial intelligence
Cutter suction dredge J.F.J. de Nul – 2003 d’Artagnan - 2005 Ambiorix - 2012 Athena – 2012 Artemis- 2013
Some recent progress in dredge equipment illustrated WEDA 32 & TAMU 43 - June 11, 2012 7 Larger cutter suction dredges delivered during the last decades Jumbo Class Cutter Suction Dredges DRED LEONAR MASHO AL SADR JFJ DE D ’ ARTAGN ATHENA GE DO DA UR 1999 NUL AN ARTEMIS VINCI 1996 2003 AMBIORIX 2012/2013 Characteristics 1986 2005/2012 Tot. power inst. 20,532kW 22,380kW 20,507kW 27,150kW 26,200kW 24,702kW Cutter power 5480kW 2400kW 2200kW 6000kW 6000kW 6000kW 8160hp 8160 hp 8160 hp Dredge depth 32m 35m 27m 6.5/35m 35m 30.7m Manning 41 73 30 60 43 50 Barge loading Yes No No Yes Yes Yes
Offshore dredging Extended dredging depth: up to 140 m
The larger dredges can go deeper. Smaller dredges can extend the dredging depth with the tele-tube
Dynamic trackig: higher accuracy
Cutterd dredgers working in waves
Development of dredge equipmentis no longer driven by economy WEDA 31 & TAMU 42 - June 7, 2011 12 DODO Simulation Software Cutter suction dredge Athena’s spud force analysis during dredging operations in simulated wave conditions
Can the limits be extended or at least safe guards be built in?
Conventional spud carrier csd JFJ de Nul
Longitudinally buffered spud carrier with wires csd d’Artagnan / Ambiorix
D’Artagnan - Spud carrier with wire compensation system
Just an impression to put man and machine in perspective: spud tilting
Spin-off for smaller standard dredges here: IHC Beaver 6518 ( a 26”discharge) the “SPUD GUARD”
Development of dredge equipmentis no longer driven by economy WEDA 31 & TAMU 42 - June 7, 2011 19 “Spud Guard” cylinders as mounted on the IHC Beaver step spud carriages
Waterway maintenance
The WILD DRAGON ready to go WILD DRAGON(left) Excavation drag head(right) s.g. 1.38 s.g. 1.08
Hull shape: 85 m vessels 4550 ton, 4 1 7150 ton, 1994 2003 2 5970 ton, 8000 ton, 5 1997 2004 3 6570 ton, 1999
Demand from the market: health and safety
Quarters isolated from noise and vibrations Manning: J.F.J. de Nul - 60 d’ Artagnan - 43 Athena - 50
Comfortable operating cabin also on smaller dredgers The engine and control cabin are placed on dampers for improved comfort and reduced noise.
Comfortable operating cabin: high efficiency Improved ergonomics for operating cabin and dredger controls; Unprecedented 360 0 for the operator
New simulator technology Online learning Training
New technologies over the past decade, some highlights on the dredging installation
High Pressure Cutter Special Medium Pressure
“Rock special” design effort integrated with “the Curve”, a pump development to improve suction and wear of a complete pump
Wear resistant suction / discharge hoses “Max Top” Bucket Hose “Bone Crusher hose” with innovative steel rings, not tearing out
New cutter heads: the Lancelot cutter Not only on our standard cutters but also successfully implemented on a large mining dredge in Africa
Online monitoring • Follow dredger activities from any place in the world • Online support by experts
Development of dredge equipmentis no longer driven by economy WEDA 31 & TAMU 42 - June 7, 2011 34 CONCLUSION The change in the market has created new technologies, but new technologies also have created new markets
Recommend
More recommend
