WATER-COOLED WATER-MODERATED NUCLEAR REACTOR CORE MELT COOLING AND CONFINEMENT SYSTEM

WATER-COOLED WATER-MODERATED NUCLEAR REACTOR CORE MELT COOLING AND CONFINEMENT SYSTEM

The invention relates to nuclear power industry, namely to systems providing safety of nuclear power plants (NPP), and can be used during severe accidents leading to reactor vessel and NPP containment failure. The melt cooling and confinement system includes a cone-shaped guide plate (4) installed u...

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Hauptverfasser: SIDOROV, Aleksandr Stalevich, NEDOREZOV, Andrey Borisovich
Format: Patent
Sprache:eng
Schlagworte:
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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creator SIDOROV, Aleksandr Stalevich
NEDOREZOV, Andrey Borisovich
description The invention relates to nuclear power industry, namely to systems providing safety of nuclear power plants (NPP), and can be used during severe accidents leading to reactor vessel and NPP containment failure. The melt cooling and confinement system includes a cone-shaped guide plate (4) installed under the reactor vessel bottom (2), cantilever girder (5) installed under the guide plate (4) and supporting the same, core catcher (8) installed under the cantilever girder (5) and equipped with cooled cladding in form of a multi-layer vessel for protection of the external heat-exchange wall from dynamic, thermal and chemical impacts, and filler material (10) for melt dilution inside the multi-layer vessel. The said multi-layer vessel contains external (11) and internal (13) metal walls with filler (12) of poorly heat-conductive in relation to the wall material in between. Filler (12) thickness hfil shall meet the following requirement: 0.8h???< hfil
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The melt cooling and confinement system includes a cone-shaped guide plate (4) installed under the reactor vessel bottom (2), cantilever girder (5) installed under the guide plate (4) and supporting the same, core catcher (8) installed under the cantilever girder (5) and equipped with cooled cladding in form of a multi-layer vessel for protection of the external heat-exchange wall from dynamic, thermal and chemical impacts, and filler material (10) for melt dilution inside the multi-layer vessel. The said multi-layer vessel contains external (11) and internal (13) metal walls with filler (12) of poorly heat-conductive in relation to the wall material in between. Filler (12) thickness hfil shall meet the following requirement: 0.8h???&lt; hfil &lt;1.6h???, where h??? is vessel external wall (11) thickness. The technical result of the invention is the increased efficiency of heat removal from the melt and improved structural reliability. 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subjects NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
title WATER-COOLED WATER-MODERATED NUCLEAR REACTOR CORE MELT COOLING AND CONFINEMENT SYSTEM
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