|
(11) | EP 2 497 578 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||||||||||
| (54) | Remediation of underwater fluid storage tanks |
| (57) An underwater fluid storage tank remediation assembly (20) is disclosed which comprises:
a flexible pipe (28) which can be inserted into an underwater fluid storage tank (24);
a fluid injection device (22) coupled to the flexible pipe and arranged so that fluid
flowing down the pipe passes into the fluid injection device, the fluid injection
device comprising at least one fluid outlet for directing a jet (36) of fluid into
the tank to agitate contaminants (8) in the tank; a pipe gripping and rotation device
(30) which can be selectively actuated to grip and rotate the flexible pipe relative
to the tank, to facilitate movement of the fluid injection device coupled to the pipe
within the tank; a motivating arrangement (32) for generating a motive force which
can be used to steer the fluid injection device around the tank when the flexible
pipe is rotated by the pipe gripping and rotation device; and a contaminant withdrawal
arrangement (34) for withdrawing contaminants agitated by the fluid injection device
from the tank.
|