A VR-based experienceable education system has been developed by realizing a human-shaped virtual operator in virtual control room of Nuclear Power Plants (NPP). The virtual operator has expertise knowledge about NPP on how to diagnose some anomalies and operate the control panels by himself. The human-like body motion of the virtual operator can be synthesized as 3 dimensional animations and a trainee can watch the virtual operator operating the control panels from any view-direction the trainee would like to see. And he can also ¡Çexperience¡Ç the plant operation by viewing the control room from the virtual operator¡Çs viewpoint as if the trainee would operate the control panels by himself. Moreover, the trainee can understand what the virtual operator thinks, by hearing the verbal utterance of the virtual operator. With this education system, it is expected that the trainee can master the skills for operating the control panels effectively. The overall architecture of the developed education system and the functional configuration of the system are described in this paper.