Abstract
Complete or partial failure of nuclear containment structures, if targeted during war or terrorist attacks, may cause heavy radiation leakage. Safety analysis of BWR Mark III type containment has been performed in the present study against possible crash of military jet Phantom F4. Numerical simulations have been carried out using finite element code ABAQUS/Explicit. A normal hit of the aircraft has been considered near the base of containment. Loading of the impact force has been provided through reaction time response curve. Concrete Damage Plasticity model have been incorporated to simulate the behaviour of concrete at high strain rate, while Johnson-Cook elasto-visco model of ductile metals have been used for steel reinforcement. Effect of contact area has been evaluated. Maximum deformation in the containment building has reported as 64.77mm for 28 m2 contact area, while for contact area of 10 m2 it has been observed about 135mm. Very high local deformations has been noticed in the impact region. Tension damage at the inner face of the containment are more significant than the compression damage at the loading face. Moreover, no significant global damage has been observed in structure. At higher velocities Phantom F4 may perforate the structure.
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