Patent Number: 
Section: claims

1. Transfer device for a nuclear installation between a first chamber and a second chamber separated by a wall comprising a curved surface comprising:a barrel door comprising a cylindrical body and having an outer periphery, the cylindrical body defining an inner space, the inner space accessible by an opening that is oriented on a side of the first chamber or on a side of the second chamber, the inner space configured to receive materials to produce nuclear fuel, the barrel door movable around an axis;at least one sealing means in contact with the curved surface of the wall and the outer periphery of the barrel door to form a seal between the wall and the outer periphery of the barrel door, the at least one sealing means comprising:a seal carrier; anda seal attached to the seal carrier;wherein the seal carrier is removably fixed on the wall, andwherein the seal is in contact with the outer periphery of the barrel door. 2. Device set forth in claim 1, wherein the seal carrier comprises a T groove receiving the seal. 3. Device set forth in claim 1, wherein the seal carrier is made of stainless steel. 4. Device as set forth in claim 1, wherein the seal is made of a material that is resistant to flames and hot gas. 5. Device as claimed in claim 4, wherein the seal is made of intumescent material. 6. Device as set forth in claim 1, wherein the sealing carrier is made of several parts. 7. Device as set forth in claim 1, comprising a first pressure drop means able to increase travel of gases between the chambers, said first means being mounted on an upper end of the door, substantially in a plane orthogonal to the axis of rotation of the door. 8. Device as claimed claim 7, wherein the first pressure drop means is formed by a steel angle assembly. 9. Device set forth in claim 7, wherein the first pressure drop means is formed by several arcs of a circle placed end to end. 10. Device as set forth in claim 1, comprising a second pressure drop means, positioned along a generatrix of the outer periphery of the transfer mechanism. 11. Device as claimed in claim 10, wherein the second pressure drop means comprises an elongated element made of steel, with a substantially circular transversal section. 12. Device as set forth in claim 1, wherein the door comprises a first axis projecting from a first side and a second axis projecting from a second side, around which the door is able to rotate. 13. Device as set forth in claim 1, wherein the door is driven in rotation using at least one electric motor. 14. Device set forth in claim 1, wherein the at least one sealing means is configured to confine flames and hot gas in the first chamber for a determined length of time to prevent passage of the flames and hot gas into the second chamber. 15. Device set forth in claim 4, wherein the material is resistant to hot gases that are at least the temperature of the flames.