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Development in Dredge equipment in the last decade
Dredging 2012 , San Diego, 2012
Ruud Ouwerkerk and Sergio Ooijens
A decade of progressTechnology push and market pull
This presentation intends to illustrate a few items
Project demands
Land reclamation
Beach reclamation
Port construction
Waterway maintenance
Land reclamation
Lakes and reservoirs
Mining
Environmental
Offshore dredging
New technologies
For example:
Larger vessels
Improved dredging installations
Etc.Regulations
Project constrains
Etc.
Higher efficiency
Higher accuracy
Higher uptime
Etc.
Land reclamation and port construction
High volumes and low cost priceEconomies of scale: larger vessels with higher technologies. Leading to a 50% reduction in USD/yr3
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 - 2005Ambiorix - 2012 Athena – 2012Artemis- 2013
Some recent progress in dredge equipment illustratedWEDA 32 & TAMU 43 - June 11, 2012
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Larger cutter suction dredgesdelivered during the last decades
Jumbo Class Cutter Suction Dredges
DREDGE
Characteristics
LEONARDO DAVINCI
1986
MASHOUR
1996
AL SADR1999
JFJ DENUL
2003
D’ARTAGNANAMBIORIX2005/2012
ATHENAARTEMIS2012/2013
Tot. power inst. 20,532kW 22,380kW 20,507kW 27,150kW 26,200kW 24,702kW
Cutter power 5480kW 2400kW 2200kW 6000kW8160hp
6000kW8160 hp
6000kW8160 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 economyWEDA 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 extendedor 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 dredgeshere: IHC Beaver 6518 ( a 26”discharge)
the “SPUD GUARD”
Development of dredge equipmentis no longer driven by economyWEDA 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
2
Hull shape: 85 m vessels
1
3
4
5
4550 ton,
1994
5970 ton,
1997
6570 ton,
1999
7150 ton,
2003
8000 ton,
2004
Demand from the market: health and safety
Quarters isolated from noise and vibrationsManning: J.F.J. de Nul - 60
d’ Artagnan - 43 Athena - 50
The engine and control cabin are placed on dampers for improved comfort and reduced noise.
Comfortable operating cabin also on smaller dredgers
Improved ergonomics for operating cabin and dredger controls;
Unprecedented 3600 for the operator
Comfortable operating cabin: high efficiency
New simulator technologyOnline learning
Training
New technologies over the past decade, some highlights on the dredging installation
Cutter Special High PressureMedium 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 economyWEDA 31 & TAMU 42 - June 7, 2011
34
CONCLUSIONThe change in the market has created new technologies, but new technologies also have created new markets
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