A fuel assembly (1) for a nuclear power plant includes at least one hollow rod (9, 9a,9b, 9c). The hollow rod is a control rod guide tube (9) of the fuel assembly (1) for the control rod assembly or an instrumentation tube. Each rod (9) is adapted to be filled with one or more containers (38) filled with material to be activated. The fuel assembly further comprises a damping element (36, 36a, 36b, 36c) at the lower end (32) of the hollow rod (9, 9a,9b, 9c).

A fuel assembly (1) for a nuclear power plant includes at least one hollow rod (9, 9a,9b, 9c). The hollow rod is a control rod guide tube (9) of the fuel assembly (1) for the control rod assembly or an instrumentation tube. Each rod (9) is adapted to be filled with one or more containers (38) filled with material to be activated. The fuel assembly further comprises a damping element (36, 36a, 36b, 36c) at the lower end (32) of the hollow rod (9, 9a,9b, 9c).

According to an example aspect of the present disclosure, there is provided a fuel and control system for a nuclear reactor comprising, a drive assembly, a control rod assembly, and a fuel unit, featuring a frame, which attaches the drive assembly to the fuel unit and provides a space for control movement of the control rod assembly so that the frame, the fuel unit, the drive assembly and the control rod assembly are integrated as one unit, and so that the fuel and control system is configured to be loaded into and unloaded out of the nuclear reactor as one unit.

According to an example aspect of the present disclosure, there is provided a fuel and control system for a nuclear reactor comprising, a drive assembly, a control rod assembly, and a fuel unit, featuring a frame, which attaches the drive assembly to the fuel unit and provides a space for control movement of the control rod assembly so that the frame, the fuel unit, the drive assembly and the control rod assembly are integrated as one unit, and so that the fuel and control system is configured to be loaded into and unloaded out of the nuclear reactor as one unit.