Sealed shell of nuclear reactor constructing method

Abstract

A reactor-containment vessel made of reinforced concrete is accommodated into a reactor building. A cylindrical part liner for composing the reactor-containment vessel and bar arrangements inside an RCCV provided outside the liner are assembled on the ground in advance for suspending and installing in a construction site. For a diaphragm floor for dividing the reactor-containment vessels into an upper dry well and a lower pressure suppression room and a top slab which is provided for covering the top part of the reactor-containment vessel, both of the diaphragm floor liner module and the top slab module that compose the diaphragm and the top slab are assembled on the ground in advance as a one-piece structure for suspending and installing in a setting position at the construction site.

Description

technical field [0001] The invention relates to the construction technology of atomic reactor buildings built in atomic power plants, in particular to placing nuclear reactor sealed casings in nuclear reactor buildings, which are nuclear reactor sealed casings made of reinforced concrete and a construction method thereof. Background technique [0002] In an atomic power plant the nuclear reactor containment enclosure is placed inside the nuclear reactor building. The sealed casing of the nuclear reactor is constructed of reinforced concrete, and a concrete frame with inner reinforcement and outer reinforcement is arranged on the outer side of the cylindrical steel sleeve. For example, the construction of the sealed shell of the nuclear reactor in the improved boiling water atomic power plant (hereinafter referred to as the ABWR atomic power plant) is a key process in the construction of the ABWR atomic power plant. [0003] In the past, the construction method of the reinfo...

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Problems solved by technology

[0028] Furthermore, since the through-piece 18 and the hole 19 installed on the steel sleeve 10 of RCCV2 in the past are temporarily supported from the steel sleeve 10 with a temporary inclined rod 20, etc., the RCCV sleeve 10 is hoisted into At the stage of the reinforcement operation of RCCV reinforcement 11 and 12, the components that affect the reinforcement operation need to be refitted, so the RCCV reinforcement operation is complicated.

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