Nuclear reactor containment vessel and nuclear power plant using same

A reactor and containment technology, which is used in reactors, nuclear engineering, nuclear power generation, etc., and can solve problems such as heating damage, fuel transfer, and operator inability to stand.

Inactive Publication Date: 2012-05-30
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, during the normal operation of the facility, the operator cannot stand in the space including the operation platform and carry out work such as transferring fuel
Or, in the case of an air atmosphere, a large amount of hydrogen in a seri

Method used

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  • Nuclear reactor containment vessel and nuclear power plant using same
  • Nuclear reactor containment vessel and nuclear power plant using same
  • Nuclear reactor containment vessel and nuclear power plant using same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0029] figure 1 It is a schematic vertical cross-sectional view showing the structure of the first embodiment of the reactor containment vessel according to the present invention, and is a view showing the situation during normal operation. figure 2 yes means figure 1 Schematic cut-away view of the reactor containment situation at the time of the accident.

[0030] The reactor containment vessel of the present embodiment accommodates a reactor core 1 and a reactor pressure vessel 2 containing the core 1 . In the core 1, many core fuels (not shown) are accommodated. A reactor secondary containment vessel 4 is arranged around the reactor primary containment vessel 3 . In the figure, for the sake of simplicity, the reactor secondary containment vessel 4 shows a complete double containment structure that completely surrounds the reactor primary containment vessel 3, but it may be a part that surrounds a part of the reactor primary containment vessel 3 Double containment.

[...

no. 2 Embodiment approach

[0040] image 3 It is a schematic vertical cross-sectional view showing the structure of the second embodiment of the reactor containment vessel according to the present invention, and is a view showing the situation during normal operation. Figure 4 yes means image 3 Schematic cut-away view of the reactor containment situation at the time of the accident.

[0041] The reactor containment vessel 8 of the present embodiment includes a cylindrical reactor primary containment vessel 3 and a dome-shaped reactor secondary containment vessel (hereinafter referred to as an upper secondary containment vessel) 9 provided above the reactor primary containment vessel 3 . The outer wall of the reactor containment vessel 8 has a cylindrical shape in the lower part and a dome shape in the upper part. The reactor containment vessel 8 accommodates the reactor pressure vessel 2 containing the core 1 . In the core 1, many core fuels (not shown) are accommodated.

[0042] Both the reactor...

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PUM

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Abstract

A nuclear reactor containment vessel (8) comprises a nuclear reactor's primary containment vessel (3) which contains a nuclear reactor pressure vessel (2), a nuclear reactor's secondary containment vessel (4) which is disposed outside the nuclear reactor's primary containment vessel (3) and which has the pressure resistant properties and the air-tightness which are equivalent to those of the nuclear reactor's primary containment vessel (3), an airbag (5) which is disposed within the nuclear reactor's secondary containment vessel (4) and which, when a failure occurs in the nuclear reactor's primary containment vessel (3), expands while receiving and encapsulating a high-pressure gas discharged from the inside of the nuclear reactor's primary containment vessel (3), and a gas phase vent pipe (6) which connects the nuclear reactor's primary containment vessel (3) and the airbag (5).

Description

technical field [0001] The present invention relates to a reactor containment vessel of a boiling water type light water reactor and a nuclear facility using the same. Background technique [0002] Generally speaking, a boiling water light water reactor (BWR) adopts a pressure-suppressed reactor primary containment vessel, which has the advantage of being able to reduce the volume of the reactor primary containment vessel. In the boiling water type light water reactor, the atmosphere in the primary containment vessel of the reactor is replaced with nitrogen, and the oxygen concentration is lowered than normal air to operate. Therefore, even if the core fuel becomes high temperature during an accident and reacts with the coolant to generate hydrogen, there is no need to worry about detonation or deflagration occurring in the primary containment vessel of the reactor. In addition, in the boiling water type light water reactor, since the primary containment vessel of the react...

Claims

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Application Information

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IPC IPC(8): G21C9/004G21C9/016G21C9/04G21C13/00
CPCG21C13/10G21C9/016G21C9/004Y02E30/40G21C15/18Y02E30/30
Inventor 佐藤崇秋永诚小岛良洋
Owner KK TOSHIBA
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