This study deals with the investigation of the damaging effects that the impact of a large civilian airplane could bring in safety relevant structures of a Gen II reactor. The assessment of the safety margin of an existing plant, entails, unavoidably, with the evaluation of how robust the wall building is to guarantee the overall plant safety. In doing that, the dynamic response of the RB has properly studied by means of a reliable finite element code and setting up further refined models of the reactor building and airplane. The location of the strike was considered near the junction of the dome and cylindrical body while the angle of incidence of the impact was assumed to be normal and/or inclined to the building outer surface. Moreover the qualification of code has been done on the basis of the results of experimental carried out, simulating the impact of a missile against a deformable target. The results obtained, assuming the same impact velocity of the airplane, highlighted that: 1) the plant undergoes local damages in the area where the impact is localized; 2) the penetration depth is dependent on the type of aircraft considered and wall thickness; 3) the overall stability of the safety relevant structures is anyway ensured.
Aircraft Impact onto an existing nuclear plant
LO FRANO, ROSA
2015-01-01
Abstract
This study deals with the investigation of the damaging effects that the impact of a large civilian airplane could bring in safety relevant structures of a Gen II reactor. The assessment of the safety margin of an existing plant, entails, unavoidably, with the evaluation of how robust the wall building is to guarantee the overall plant safety. In doing that, the dynamic response of the RB has properly studied by means of a reliable finite element code and setting up further refined models of the reactor building and airplane. The location of the strike was considered near the junction of the dome and cylindrical body while the angle of incidence of the impact was assumed to be normal and/or inclined to the building outer surface. Moreover the qualification of code has been done on the basis of the results of experimental carried out, simulating the impact of a missile against a deformable target. The results obtained, assuming the same impact velocity of the airplane, highlighted that: 1) the plant undergoes local damages in the area where the impact is localized; 2) the penetration depth is dependent on the type of aircraft considered and wall thickness; 3) the overall stability of the safety relevant structures is anyway ensured.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
