| 摘要 |
<p>A shield 42 for restricting molten corium from flowing into a water sump 36 disposed in a floor 38 of a containment vessel 12 includes upper and lower walls 44, 46 which extend vertically upwardly and downwardly from the floor 38 for laterally bounding the sump 36. The upper wall 44 includes a plurality of laterally spaced apart flow channels 48 extending horizontally therethrough, with each channel 48 having a bottom 48a disposed coextensively with the floor 38 for channeling water therefrom into the sump 36. Each channel 48 has a height and a length predeterminedly selected for allowing heat from the molten corium to dissipate through the upper and lower walls 44, 46 as it flows therethrough for solidifying the molten corium therein to prevent accumulation thereof in the sump 36.</p> |
