COSTA CONCORDIA WRECK - THE PARBUCKLING AND REMOVAL PROJECT
Tecon has been working with the Titan-Micoperi JV since initial definition of the bases of the parbuckling project and preparation of the proposal that won the competition and got the job, mainly because it was the only one complying with the requirement of removing the wreck in one piece, respecting the peculiar environment and allowing the complete removal of the auxiliary structures.
Tecon developed these ideas and found the way of properly engineering the rotation and support of the up-righted wreck on an artificial bottom consisting of a combined system of steel platforms and grout bags.
Based on his 40 year experience in the engineering of handling and installing large offshore structures and bridge sections, Tullio Balestra (Tecon President) was able to immediately identify the characteristics of the pulling system required to achieve the 65 degree rotation of the wreck: the pulling load, due to its magnitude (over 10000 metric tons) had to be applied from fixed points and the pulling equipment had to be synchronized and continuously controllable.These ideas led to the adoption of strand jacks acting between the sponsons applied on the port side of the ship and suitable extensions of the underwater platforms.
During the actual development of the project and operations Tecon has been part of the decision making team through Mr. Balestra (one of the team of eleven in the operation control room on board the ROC barge) and has directly developed the structural and foundation design of the platforms and of the foundation blocks of the wreck securing and hold back systems.
For the design of all foundations in the particularly delicate fractured granite of the Giglio sea bottom Tecon availed itself of the geotechnical consultancy of Soil. Further to the structural and geotechnical design activities, Tecon has also developed all procedures and specifications for the handling and installation of the support structures and buoyancy elements involved in the whole project.