Device on a platform

Abstract

There is disclosed a device on a platform, especially a semi submersible platform ( 10 ), comprising a number of pontoons ( 16 ), and a platform deck ( 12 ), which is connected to the topside surface of the pontoons by way of a number of columns ( 18, 20 ) or legs. The device is characterized in that in connection to the topside surface ( 34 ) of each pontoon ( 16 ), upward extending wall sections ( 26 ) are formed so that an upward open chamber ( 28 ) is defined.

1 . Device on a platform, especially semi submersible platform ( 10 ), comprising a number of pontoons ( 16 ), and a platform deck ( 12 ) which are connected to the topside surface of the pontoons by way of a number of columns ( 18 ,  20 ) or legs, characterised in that in relation to the topside surfaces ( 34 ) of mainly all the pontoons ( 16 ), upward extending wall sections ( 26 ) are formed so that an upward facing open chamber ( 28 ) is defined.  
     
     
         2 . Device in accordance with    claim 1   , characterised in that the wall sections are aligned with the wall parts of the pontoon.  
     
     
         3 . Device in accordance with claims  1 - 2 , characterised in that the wall sections ( 26 ) are combined with the upward extending side surfaces of the columns ( 16 ,  18 ), so that these make up a part of the upward extending wall sections which define the upward open chamber ( 28 ).  
     
     
         4 . Device in accordance with claims  1 - 3 , characterised in that the whole or parts of the topside surfaces ( 34 ) of the pontoons form a floor in the mentioned chamber ( 28 ).  
     
     
         5 . Device in accordance with claims  1 - 4 , characterised in that each wall section have a height H above the topside surface ( 34 ) of the pontoon ( 16 ).  
     
     
         6 . Device in accordance with claims  1 - 5 , characterised in that the chamber ( 28 ) is adapted to be emptied of water by pumping out with its own pipe/pumping system.  
     
     
         7 . Device in accordance with claims  1 - 6 , characterised in that the wall part ( 26 ) is comprised of channels/openings/slots ( 40 ) with, if desired, closable hatches/valves which can be opened (such as by remote control from the control centre of the platform) for free outflow and inflow of water.  
     
     
         8 . Device in accordance with one of the preceding claims, characterised in that the platform is comprised of three pontoons running essentially in parallel, and the two outer pontoons comprise the chamber-forming construction invented, while the middle pontoon is without such a chamber-forming construction.