Nuclear reactor control rod winding arrangements

Claim 1

A NUCLEAR REACTOR COMPRISING A CLOSED PRESSURE VESSEL THE TOP FACE OF WHICH COMPRISES A PILE CAP, A REACTOR CORE WITHIN SAID PRESSURE VESSEL AND HAVING A PLURALITY OF CONTROL-ELEMENT CHANNELS FORMED THEREIN, DRIVE MEANS MOUNTED ON SAID PILE CAP, WINDING MEANS OPERATED BY THE DRIVE MEANS, A COMMON STANDPIPE PENETRATING THE PILE CAP BETWEEN THE WINDING MEANS AND THE REACTOR CORE, A PLURALITY OF FIXED GUIDE TUBES ABOVE SAID REACTOR CORE, A PLURALITY OF FIXED GUIDE TBES ABOVE SAID REACTOR CORE BUT WITHIN THE PRESSURE VESSEL AND BELOW SAID STANDPIPE, EACH SAID GUIDE TUBE COMMUNICATING AT ITS LOWER END WITH A SEPARATE ONE OF SAID CONTROL-ELEMENT CHANNELS AND AT ITS UPPER END WITH SAID STANDPIPE, A PLURALITY OF CABLES ALL SUSPENDED FROM SAID WINDING MEANS AND ALL PASSING THROUGH SAID STANDPIPE AND THENCE EACH THROUGH A SEPARATE SAID GUIDE TUBE TO THE CORRESPONDING CONTROL-ELEMENT CHANNEL, AND A REACTIVITY CONTROL-ELEMENT SUSPENDED FROM EACH SAID CABLE, WHEREBY WHEN SAID DRIVE MEANS IS OPERATING ALL THE SAID CONTROL-ELEMENTS ARE MOVED SIMULTANEOUSLY.