Nuclear reactor melt localization device

Abstract

In a reactor core melt localization device comprising a melt trap mounted below the bottom plate of a reactor vessel and equipped in a multilayer shell-shaped coolable shell, a melt dilution filler placed in the multilayer shell, an upper support, is formed by a melt dilution filler mounted in the reactor shaft concrete, and a lower support formed by a melt dilution filler mounted in the reactor shaft concrete. A lower support consisting of pre-buried plates consisting of pre-buried plates mounted in the concrete of the reactor shaft, the plates comprising radial supports, the melt trap comprising radial supports against the segmented, integral or separate horizontal pre-buried plates, the plates comprising radial supports, the melt trap comprising radial supports against the horizontal pre-buried plates, the horizontal pre-buried plates comprising radial supports, the horizontal pre-buried plates comprising radial supports, the horizontal pre-buried plates comprising radial supports, and the horizontal pre-buried plates comprising radial supports. Segmented, integral or separated horizontal embedded plate radial supports and trap shell radial supports are connected through fixing pieces, meanwhile, the radial supports and the fixing pieces are provided with oval openings, the upper support comprises rotary tighteners installed on the upper portion of the trap shell in pairs, and meanwhile the fixing pieces are provided with openings with hyperbolic surfaces as supports.

Description

technical field [0001] The invention belongs to the field of nuclear power, and belongs to a machine for ensuring the safety of an atomic power station (nuclear power station), which can be used in the event of serious accidents that lead to melting of the core, destruction of the reactor vessel, and release of molten matter into the sealed containment space of the nuclear power station. Background technique [0002] Constituting the greatest radiological risk are accidents with meltdown of the core material, which can occur in different combinations of failures of active and passive safety systems (destruction of equipment components) and failures of normal operating systems, or in nuclear power plants with complete An accident that occurs when power is cut off and power supply is not possible within the time period specified in the nuclear power plant design drawings to ensure emergency cooling of the core. [0003] In the event of such an accident, the melted material in ...

AI Technical Summary

Problems solved by technology

[0008] The drawback of this system is the low reliability, since the upper support is deformed during the sudden input of a large amount of melt into the melt-trap casing, which causes the melt-trap to fall to the lower surface of the reactor shaft, which is perpendicular to the reactor shaft overturned wall causing melt to be pushed out of the melt trap

Images