Structural Integrity Evaluation of Rotating Plug in a Steady State Condition

Its basic structure is much the same as that of stationary portion of the reactor head. The RP is has many penetration holes for control rod drive mechanism (CRDM), the in vessel transfer machine(IVTM) an in-service inspection (ISI) instruments. In this study, the steady state analysis for the rotating plug was performed and the structural integrity was assessed in accordance with ASME Section III, Division 5 HB. In this paper, the structural integrities of the rotating plug under the design condition and service level A condition have been assessed according to ASME code. As a result, it was confirmed that the structural integrity of the rotating plug was secured for a steady state condition. For the future work, a transient analysis and a seismic analysis need to be performed by combining the different design loads