FIELD: core melt localizing systems of nuclear reactors. SUBSTANCE: trap is mounted on supports under reactor vessel; it is, essentially, spherical-bottom tank that has heat-insulation shielding layer of zirconium dioxide and external stainless-steel layer; heat-insulation shielding layer is covered with additional bulk layer of high-temperature porous ceramic fragments mixed up with neutron-absorbing materials. Additional layer has largest possible external surface such as cone-shaped one and maximum possible porosity; zirconium dioxide is used as high- temperature ceramic material. EFFECT: enhanced reliability due to reduced ferric oxide content of core melt. 4 cl, 1 dwg
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