Patent Number: 041837843
Section: abstract

Disclosed is a nuclear reactor plant, comprising:. a prestressed concrete pressure vessel; PA1 a high temperature reactor arranged in a central cavity within the vessel; PA1 a closed gas cooling circuit including at least one housed gas turbo unit arranged in a turbine duct in the wall of the vessel, said unit including a turbine and a compressor and having detachable bearings; means for exchanging heat and means for transporting gas in the cooling circuit including hot gas from the reactor to the turbine, said heat exchange means and said gas transport means being arranged in recesses in the wall of the vessel; PA1 means for forming a detachable plug-in type connection between the hot gas transport means and each turbo unit; PA1 means, positioned at the edge of the turbine duct, for connecting all remaining gas transport means to the turbo unit; PA1 means, including peripheral sealing members positioned between the inside wall of the turbine duct and the outer housing of the turbo unit, for separating each of the remaining gas transport means from each other; PA1 means for detachably connecting each turbo unit to the inside of its turbine duct; PA1 remote control means for detaching these connecting means; PA1 means, including at least one lifting device controllable from outside of the vessel through a bore in the wall of the vessel, for dismounting each turbo unit from within its turbine duct; PA1 means for detaching from outside of the vessel all connections to each turbo unit which must be removed in order for removal of the turbo unit from its turbine duct; and PA1 means, including a duct through the wall of said vessel, for gaining access to each bearing of each turbo unit.