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Machine translation
1. (WO1980002825) A METHOD OF REDUCING THE ESCAPE OF OIL FROM OIL TANKERS WHICH HAVE GONE AGROUND
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002825    International Application No.:    PCT/SE1980/000164
Publication Date: 24.12.1980 International Filing Date: 10.06.1980
IPC:
B63B 25/08 (2006.01), B63B 27/24 (2006.01), B63C 7/16 (2006.01)
Applicants:
Inventors:
Priority Data:
7905090 11.06.1979 SE
Title (EN) A METHOD OF REDUCING THE ESCAPE OF OIL FROM OIL TANKERS WHICH HAVE GONE AGROUND
(FR) DISPOSITIF POUR LA REDUCTION DE L"ECHAPPEMENT DU PETROLE A PARTIR D"UN TANKER ECHOUE
Abstract: front page image
(EN)In a method of eliminating or reducing the escape of oil from a damaged oil tank (1) of an oil tanker which has gone aground, there is first created an underpressure in the gas space of the damaged tank. While maintaining this underpressure there is then applied a liquid lock. This lock is created by means of a trunk (10), which may be portable and which is accommodated in a pressure vessel (9). Subsequent to evacuating the pressure vessel via a working hatch (8) the trunk is then lowered into the gas space of the tank. The trunk is lowered beneath the surface of the oil, whereafter the pressure vessel is removed, the liquid column in the tank forming a lock for the underpressure in the tank. There is then lowered into the tank a portable submersible pump - or a hose (17) which is caused to operate as an air-lift pump by feeding finely divided air to the bottom thereof. Above deck the air is passed to a deaerator (18), while the oil is passed to an empty or partially filled undamaged tank (2; 2") through a hose (7; 19).
(FR)Dans un dispositif pour la reduction ou l"elimination de l"echappement de petrole d"un reservoir endommage (1) a partir d"un tanker echoue, on met, dans un premier temps, l"espace gazeux du reservoir endommage en depression. Pendant que cette depression est maintenue, on applique un blocage liquide. Ce blocage est cree au moyen d"un manchon (10) qui peut etre portatif et dispose dans un recipient a pression (9). Apres evacuation du recipient a pression au moyen d"un panneau de travail (8) le manchon est abaisse dans l"espace gazeux du reservoir. Le manchon est abaisse en dessous de la surface du petrole, apres quoi le recipient a pression est enleve, la colonne de liquide dans le manchon formant un blocage maintenant la depression dans le reservoir. On introduit ensuite dans le reservoir une pompe immergee ou une canalisation (17) qui fonctionne en tant que pompe a remontee d"air en alimentant de l"air finement divise a sa base. Sur le pont l"air est passe dans un desaerateur (18) tandis que le petrole est amene vers un reservoir non endommage vide ou partiellement rempli (2; 2") au moyen d"un tuyau (7; 19).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)