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Rimozione Costa Concordia: tre ipotesi per le operazioni di recupero
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ROMA- Tre scenari sperimentali sono stati presi in considerazione per rimuovere il relitto della nave incagliata sugli scogli a poche decine di metri dall' isola del Giglio. La Costa Concordia non rimarrà per sempre su una roccia. La guardia costiera ha già chiesto di evacuare i rottami in fretta. Diverse società, tra cui l’olandese Smit & Salvage, responsabile per lo svuotamento del carburante, e la società americana Salvage Titan, stanno lavorando per proporre un piano per la rimozione del relitto.
RIMOZIONE COSTA CONCORDIA: le tre soluzioni possibili
1- Inclinare la nave. La ditta olandese ha avanzato l’idea che sia prima riparata la falla e poi raddrizzata la nave. Il primo passo sarebbe quello di posizionare delle enormi lastre sul lato opposto all’inclinazione della barca e, in seguito, la nave verrebbe imbragata e sollevata con l’aiuto di palloni galleggianti attaccati allo scafo. L’acqua presente all’interno dovrà essere asportata con l’ausilio di pompe idrovore.
Pali conficcati nella roccia dovrebbero agire come punti di attacco per la chiglia, trave longitudinale a sezione quadrata o rettangolare che percorre l'imbarcazione da poppa a prua nella sua parte sommersa. Una volta a galla il relitto dovrà essere trainato per essere smantellato.
Molte incognite rimangono: la struttura della barca non è troppo fragile per resistere alle operazioni? La barca può ancora galleggiare correttamente?
2- Far galleggiare la nave. La Costa Concordia deve essere sollevata con palloni d'aria messi intorno alla nave e, una volta rimessa in galleggiamento, trainata da rimorchiatori.
3- Smantellare la nave. Questa è l'ultima ipotesi. Prevede che si smonti la nave pezzo per pezzo con gli strumenti necessari per tagliarla. La barca dovrebbe essere tagliata in sezioni. Gru galleggianti e macchinari di trasporto dovrebbero rimuovere tonnellate di acciaio. Ma lo smantellamento di un colosso del genere potrebbe infatti richiedere mesi, la suddivisione in tronconi trasportabili è una soluzione difficilmente percorribile, viste le mastodontiche dimensioni della Concordia (293 metri e una stazza di quasi 115mila tonnellate).
(Fonte foto: Le Figaro)
Mercoledì 18 Gennaio 2012
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Commenti
Sarà un compito più che difficile anche perchè le altre ipotesi difficilmente sono percorribili visto che al mondo non esistono mezzi abbastanza grandi e potenti da movimentare una nave così grande.
Cordialità
Ha due gru da 7000 tonnellate l'una, quindi totale 14000 T, Costa Concordia è 114000.....
la stazza è il volume degli spazi interni di una nave si misura in "tonnellate di stazza" equivalenti a 1 TS = 100 piedicubi .. e viene usata per il pagamento delle tasse etc...Il dislocamento è tutt' altro e non va in funzione dell assetto ma del pescaggio medio...le navi da crociera hanno volumi enormi ma una portata molto bassa rispetto ad una nave da carico quella che in inglese si chiama Deadweight quindi la differenza di peso tra condizione di carico max e carico minimo 10% è davvero piccola.. l' assetto non è altro che la differenza tra il pescaggio poppiero e quello prodiero.
non conosco i dati della concordia ma penso che il suo dislocamento ovvero il suo peso si aggiri attorno alle 50.000 tonnellate peso
Ergo, per maggio forse sarà svuotalo il diesel che una volta reso liquido è estremamente pericoloso perchè ricco di gas infiammabili e poi a mio avviso qualcuno la tagliera in circa 36 mesi.
neil
www.skilch.com
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