Method and device for drainage and detection of leakage

1. A method for providing a drainage from a space between a lined concrete wall and a lining for protecting the lined concrete wall, the method comprising:

arranging at least one draining member, each comprising a draining pipe having a blind flange arranged at both ends and having a length including the blind flanges that is substantially equal to the wall thickness in a casting frame, so that the blind flanges are resting at the casting frame at the inside of the wall and the outside of the wall, respectively;

filling concrete into the casting frame to cover the at least one draining member and allowing the concrete to cure;

removing the casting frame from at least one of the sides of the concrete wall; and

drilling through the blind flanges to open the at least one draining member.

2. The method of claim 1 , wherein the casting frame of the side of the wall to be lined is the lining.

3. The method of claim 1 , wherein both of the blind flanges are drilled from one side.

4. The method of claim 1 , wherein at least one connection pipe for withdrawing liquid collected in the at least one draining member, is inserted into the drill hole in the outside wall, and is welded to the blind flange.

5. The method of claim 2 , wherein a collection pipe is connected to at least one connection pipe for collection of drained liquid.

6. A vessel comprising:

an outer concrete wall provided with a lining on its inner surface to protect the concrete walls for the environment inside of the vessel;

at least one draining member comprising a draining pipe having a blind flange at each end and a total length substantially equal to the thickness of the concrete wall at the point of insertion, through the lower part of the concrete wall; and

wherein holes are provided through the blind flanges of the at least one draining member.

7. The vessel according to claim 6 , wherein the vessel is an absorber tower for a CO 2 capture plant.