February 29th 2008
View Of Port Klang From The Sea(Part Six)
View Of Port Klang From The Sea(Part One)
View Of Port Klang From The Sea(Part Two)
View Of Port Klang From The Sea(Part Three)
View Of Port Klang From The Sea(Part Four)
View Of Port Klang From The Sea(Part Five)
SUPER DREDGER
I was curious about the presence of the super-dredger that we saw on the trip and decided to dig up on it. The place we found it was somewhere between the Star Cruise Terminal and YTL Cement. What was it doing there? And how does a super-dredger really works? I dug a a lot of interesting fact and happy to share with you here.
This is actually what is called a Cutter-Suction Dredger and its name is Ruben. Yes, it got a name. Below are its details:
Construction year: 1977
Dimensions: Length o.a.: 100.60 m
Breadth o.a.: 17.05 m
Moulded depth: 5.02 m
Draught max.: 3.52 m
Dredging depth max.: 27.00 m
Dredging depth min.: 5 m
Suction pipe Ø: 850 mm
Discharge pipe Ø: 850 mm
Power: Total installed: (with D.R.A.C.U.L.A ®) 12,573 kW
Total installed 10,986 kW
Cutter: 1,324 kW
Ladder pump: 1,162 kW
Discharge pumps: 6,477 kW
* This cutter dredger can be equipped with the D.R.A.C.U.L.A. ®system.
It is owned by DEME and the project it is carrying out in Pulau Indah are as described below in their website.
Malaysia – Pulau Indah – Marina and Watervillage
Project
Reclamation, shore protection and soil improvement works for construction of Marina and Watervillage at Pulau Indah
Location : Malaysia, Port Klang, Selangor
Client: Pulau Indah Marina Resort sdn bhd
Contractor : Pulau Indah Marina Consortium :
MDC – Infra Berhad – Tideway DI
Period : October 1995 – December 1997
Size : 12.000.000 m3
Contract value : 29.670.000 € Scope of work
Reclamation
Slope protection
Drains
General Information
Creation of 220 ha new land for the development of a marina and waterfront residential area on Pulau Indah island. The residential area is modeled after Port Grimaud in southern France.
Description of the works
This contract included dredging and reclamation of about 9 million m3, the supply and installation of some 20 million m of vertical wick drains and the construction of around 140.000 m3 of rock protection
20 millions of vertical wick drains
Main Equipment
Trailing suction hopper dredgers : Pearl River, Rigelstar Pacifique
Cutter suction dredger Rubens
They also use trailing suction hopper dredgers -
DP/DT Trailing Suction Hopper Dredger
Pearl River(*)
Trailing Suction Hopper Dredger
Pacifique
And this is the Wikipedia explanation of how the dredgers work -
TRAILING SUCTION.
A trailing suction hopper dredger (TSHD) trails its suction pipe when working, and loads the dredge spoil into one or more hoppers in the vessel. When the hoppers are full the TSHD sails to a disposal area and either dumps the material through doors in the hull or pumps the material out of the hoppers. Some dredges also self-offload using drag buckets and conveyors. The largest trailing suction hopper dredger in the world is currently Vasco da Gama (Jan De Nul) with its 33,000 cu.m. hopper and a maximum dredging depth of 135m. The next mega trailing suction hopper dredgers Cristobal Colon and Leiv Eriksson are actually under construction in Spain and should be delivered in 2008. Main design specs are the 46,000 cu.m. hopper and a design dredging depth of 155m.
CUTTER SUCTION
A cutter-suction dredger’s (CSD) suction tube has a cutter head at the suction inlet, to loosen the earth and transport it to the suction mouth. The cutter can also be used for hard surface materials like gravel or rock. The dredged soil is usually sucked up by a wear resistant centrifugal pump and discharged through a pipe line or to a barge. In recent years dredgers with more powerful cutters have been built in order to excavate harder and harder rock without blasting. The two largest cutter suction dredgers in the world are Deme’s D’Artagnan (28,200 kW total installed power), and Jan De Nul’s J.F.J. DeNul (27,240 kW).
