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Wednesday, November 14, 2012

TheParbucklingProject.com Is The Costa Concordia Salvage Website You Have Been Waiting For


Project phases

Stabilisation

The first phase involves the anchoring and stabilisation of the wreck to prevent any slipping or sinking. This will make it possible to work safely even in bad weather.
stabilizzazione
Stabilisation is performed using an anchoring system made up of four submarine anchor blocks fixed to the sea bottom between the center of the wreck and the coast. Two cables are fixed to each of the anchor blocks (a total of eight cables, each consisting of 18 smaller cables). These sixteen cables are anchored to the strand jacks welded to the left side of the wreck. The strand jacks are hydraulic jacks used to tension the cables and give the wreck more stability.
strand jacks
In parallel, 12 retaining turrets will be installed for use during the parbuckling of the wreck. Jacks mounted on the tops of the turrets are attached to chains (two per turret or a total of 24 chains) that pass under the hull and are fixed to the port side of the wreck. These cables will be used for balancing purposes during the rotation and parbuckling of the wreck.

torri e catenemartinetti



Installation of submarine supports and starboard side caissons

falso fondaletorri e catene
This stage involves the preparation of the false bottom on which the wreck will rest after rotation.
The preparation of the false bottom is divided into two separate phases.
First grout bags will be positioned and filled with cement to occupy the empty space between the two spurs of rock on which the wreck is resting and create a stable base for the hull. After divers have positioned the bags, mortar prepared on a barge will be injected into them. The grout bags have eyelets for easy removal during clean-up operations.
After positioning the grout bags, three large platforms (each resting on six piles) and three smaller ones will be fixed in place. The piles have a diameter of 1.6 m. The piles will be inserted into the ground by drilling a 2 m hole, using a closed circuit system so that no waste is dispersed in the sea. The space between the pile and the hole will then be filled with cement. After testing against a template, the platforms will be lowered onto the piles and cemented in place. The base of the platforms is made of wood and all the rest is metal. Of the three smaller platforms, one rests on four piles and the other two on two piles each (a total of 26 piles).
After preparing the false bottom, the Micoperi 30 crane will be used to install the caissons on the left side of the wreck. The caissons are attached to guides previously welded onto the wreck.
torri e catene


Parbuckling 

parbuckling
This stage will take about two days, as the movement has to be extremely delicate and constantly monitored. The parbuckling will be performed using tie cables attached to the top of the caissons and to the platforms, which will be pulled seawards, while the cables attached to the starboard turrets will be used for balancing. This is a very delicate phase, during which the forces involved have to be offset carefully to rotate the wreck without deforming the hull.



Installation of caissons on starboard side

In this stage the caissons are attached to the starboard side of the wreck. These caissons will be used during the subsequent re-floating stage.
refloating


Re-floating

At this point the hull is resting on the false bottom at a depth of about 30 m. A system of hydraulic pumps will be used to empty the water gradually from the caissons on both sides of the wreck, pushing it upwards. On completion of the emptying process, a section of about 18 m will remain submerged. 
refloating

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