Radiation protection means during the exchange of fuel elements

Claim 1

IN A NUCLEAR GAS COOLED REACTOR HAVING A POND, MEANS FOR PROTECTING AGAINST RADIATION FROM SPENT FUEL ELEMENTS DURING TRANSPORTATION FROM THE REACTOR TO THE POND, AND FOR FEEDING THE REACTOR WITH NEW FUEL ELEMENTS, COMPRISING FIRST AND SECOND CHAMBERS LOCATED ON ONE SIDE OF THE REACTOR SEPARATED THEREFROM AND FROM EACH OTHER, THE FIRST OF SAID CHAMBERS BEING ADAPTED TO RECEIVE SPENT FUEL ELEMENTS AND BEING PARTLY FILLED WITH WATER AND COMMUNICATING WITH SAID POND THROUGH A GATE BELOW THE WATER LEVEL OF SAID CHAMBER, THE SECOND CHAMBER COMMUNICATING THROUGH A GATE WITH A SUPPLY CHAMBER FOR NEW FUEL ELEMENTS, A WATER FILLED TANK LOCATED DIRECTLY ABOVE THE REACTOR AND EXTENDING OVER THE SAID FIRST MENTIONED CHAMBERS, PIPE SOCKETS IN THE BOTTOM OF SAID TANK FIXED TO THE ENDS OF THE CANNING MEANS OF THE FUEL ELEMENTS AND ADAPTED TO BE COUPLED WITH THE LOWER PART OF A DISPLACEABLE LOADING MACHINE FOR THE FUEL ELEMENTS, SAID PART BEING SHAPED AS A LONGITUDINALLY EXTENDING PRESSURE VESSEL FOR RECEIVING FUEL ELEMENTS, CORRESPONDING PIPE SOCKETS MOUNTED IN THE BOTTOM OF THE SAID TANK ABOVE THE SAID FIRST MENTIONED CHAMBERS, AND ADAPTED TO BE COUPLED WITH THE LOWER PART OF THE LOADING MACHINE, AND MEANS FOR LOWERING SPENT FUEL ELEMENTS INTO SAID FIRST CHAMBER.