JP2004251677A - Reactor containment vessel and method for installing it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten the time for installing a liner plate 7 by facilitating the alignment for fitting and passing anchor bolts 10 of an anchor plate 9 through numerous holes made in a bottom plate of a ring girder 12 when the liner plate 7 is installed. <P>SOLUTION: The necessities to make the numerous holes in the bottom plate of the ring girder 12 and to align them with the anchor bolt 10 are eliminated by welding and fixing the ring girder 12 onto anchor frame plates 14 fixed onto the anchor bolts 10 fixed onto an anchor frame 9 through the level adjustment with nuts 11 to install the liner plate 7. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a containment vessel for a nuclear power plant and a method for installing the containment vessel.
[0002]
[Prior art]
The structure of the foundation of a conventional reactor containment vessel installed in a nuclear power plant will be described with reference to FIGS. FIG. 4 is a vertical sectional view of the reactor containment vessel, and FIG. 5 is an enlarged vertical sectional view of a main part of a conventional reactor containment vessel shown in FIG.
[0003]
In FIG. 4, the containment vessel 1 is separated into a dry well 3 and a pressure suppression chamber 4 by a diaphragm floor 2. A reactor pressure vessel 5 is disposed in the dry well 3, and a reactor pressure vessel pedestal 6 supporting the reactor pressure vessel 5 is provided. Further, the wall of the reactor containment vessel 1 is configured by disposing a liner plate 7 on the inner surface of the reinforced concrete section 8.
[0004]
As shown in FIG. 5, the liner plate 7 is fixed to the anchor frame 9 via the ring gutter 12. The anchor frame plate 14 and the bottom plate 12a of the ring gutter 12 placed thereon are fastened to anchor bolts 10 fixed to the anchor frame 9 with nuts 11a and 11b, and the ring gutter 12 and the anchor frame 9 are fixed. I have.
[0005]
First, the liner plate 7 is installed by adjusting the level of the anchor frame plate 14 with nuts 11 a attached to a number of anchor bolts 10 fixed to the anchor frame 9, and inserting the anchor bolts 10 into holes formed in the ring girder 12. This is done by passing through. Thereafter, the ring girder 12 is fixed by tightening the nut 11b.
[0006]
[Problems to be solved by the invention]
In the above-mentioned conventional reactor containment vessel, it is very difficult to align the anchor bolts 10 of the anchor plate 9 with a large number of holes drilled in the bottom plate 12a of the ring girder 12 and pass the holes. There was a task that took time.
[0007]
Further, it is necessary to form a large number of holes in the bottom plate 12a of the ring girder 12, and there is a problem that there is a demand for reducing the number of manufacturing steps of the ring girder 12.
[0008]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the related art, and has as its object to obtain a containment vessel that can reduce the number of installation steps.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, in the reactor containment vessel according to the present invention, in the invention according to claim 1, a reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, and a reactor pressure vessel A dry well in which a container is arranged, a pressure suppression chamber holding pool water, a diaphragm floor separating the dry well and the pressure suppression chamber, and a wall surrounding the dry well and the pressure suppression chamber, In a reactor containment vessel in which the wall is composed of the liner plate and a reinforced concrete part, and the liner plate is fixed to an anchor frame via a ring gutter, a level is fixed by a nut to an anchor bolt fixed to the anchor frame. The ring gutter is fixed to the adjusted anchor frame plate by welding.
[0010]
In the containment vessel having the above-described configuration, the level adjustment with the anchor bolts and nuts, which is required in the conventional installation of the liner frame of the containment vessel, is unnecessary, and the man-hour for installing the liner frame can be reduced.
[0011]
Further, in the invention according to claim 2, a reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is arranged, and a pressure holding pool water. A pressure chamber, a diaphragm floor separating the drywell and the pressure suppression chamber, and a wall surrounding the drywell and the pressure suppression chamber, wherein the wall comprises the liner plate and a reinforced concrete portion; In a reactor containment vessel in which a plate is fixed to an anchor frame via a ring gutter, the ring gutter is welded and fixed on the anchor frame whose level has been adjusted by machining.
[0012]
In the reactor containment vessel having the above-described configuration, the anchor bolts and nuts, which are required for installing the liner frame of the conventional containment vessel, are not required, and the level adjustment by these is unnecessary, so that the man-hour for installing the liner frame can be reduced.
[0013]
Further, in the invention according to claim 3, a reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, and a pressure holding pool water. A pressure chamber, a diaphragm floor separating the drywell and the pressure suppression chamber, and a wall surrounding the drywell and the pressure suppression chamber, wherein the wall comprises the liner plate and a reinforced concrete portion; In a nuclear reactor containment vessel in which a plate is fixed to an anchor frame via a ring gutter, the ring gutter is fixed on the anchor frame by a shim plate and fixed by welding.
[0014]
In the reactor containment vessel having the above-described configuration, the anchor bolts and nuts, which are required for installing the liner frame of the conventional containment vessel, are not required, and the level adjustment by these is unnecessary, so that the man-hour for installing the liner frame can be reduced.
[0015]
Further, in the method for installing a containment vessel of the present invention, in the invention according to claim 4, the reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, and the reactor pressure vessel A dry well to be arranged, a pressure suppression chamber holding pool water, a diaphragm floor separating the dry well and the pressure suppression chamber, and a wall surrounding the dry well and the pressure suppression chamber; Wherein the liner plate is composed of the liner plate and the reinforced concrete portion, and the liner plate is fixed to the anchor frame via a ring gutter.In the method for installing a reactor containment vessel, the anchor frame is fixed to the anchor bolt fixed to the anchor frame. Adjust the level of the plate with nuts, and then fix the ring gutter to the anchor frame plate by welding. It is characterized in.
[0016]
In the containment vessel having the above-described configuration, the level adjustment with the anchor bolts and nuts, which is required in the conventional installation of the liner frame of the containment vessel, is unnecessary, and the man-hour for installing the liner frame can be reduced.
[0017]
Further, in the invention according to claim 5, a reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, and a pressure holding pool water. A pressure chamber, a diaphragm floor separating the drywell and the pressure suppression chamber, and a wall surrounding the drywell and the pressure suppression chamber, wherein the wall comprises the liner plate and a reinforced concrete portion; A method for installing a reactor containment vessel in which a plate is fixed to an anchor frame via a ring gutter, wherein the ring gutter is welded and fixed on the anchor frame after machining and level adjustment of the anchor frame. It is assumed that.
[0018]
In the reactor containment vessel having the above-described configuration, the anchor bolts and nuts, which are required for installing the liner frame of the conventional containment vessel, are not required, and the level adjustment by these is unnecessary, so that the man-hour for installing the liner frame can be reduced.
[0019]
Further, in the invention according to claim 6, a reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, and a pressure holding pool water. A pressure chamber, a diaphragm floor separating the drywell and the pressure suppression chamber, and a wall surrounding the drywell and the pressure suppression chamber, wherein the wall comprises the liner plate and a reinforced concrete portion; In a method for installing a reactor containment vessel in which a plate is fixed to an anchor frame via a ring gutter, after adjusting a level with a shim plate on the anchor frame, a ring girder is fixed on the shim plate by welding. It is assumed that.
[0020]
In the reactor containment vessel having the above-described configuration, the anchor bolts and nuts, which are required for installing the liner frame of the conventional containment vessel, are not required, and the level adjustment by these is unnecessary, so that the man-hour for installing the liner frame can be reduced.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a containment vessel according to the present invention will be described with reference to the drawings.
[0022]
First, a first embodiment will be described with reference to FIGS. FIG. 1 is a vertical cross-sectional view of a main part of a base part of a containment vessel according to the first embodiment of the present invention at a position shown by enlarging part A in FIG.
[0023]
As shown in FIG. 4, the reactor containment vessel 1 of the present embodiment contains a reactor pressure vessel 5. The containment vessel 1 is separated into a dry well 3 and a pressure suppression chamber 4 by a diaphragm floor 2. A reactor pressure vessel 5 is disposed in the dry well 3, and a reactor pressure vessel pedestal 6 supporting the reactor pressure vessel 5 is provided. The pressure suppression chamber 4 is formed below the diaphragm floor 2 and holds pool water. The wall of the containment vessel 1 surrounding the dry well 3 and the pressure suppression chamber 4 is configured by arranging a liner plate 7 on the inner surface of a reinforced concrete section 8.
[0024]
As shown in FIG. 1, on the foundation of the reactor containment vessel 1, a liner plate 7 has a circular shape on an anchor frame plate 14 which is level-adjusted and fixed by anchor bolts 10 and nuts 11 fixed to an anchor frame 9. The ring girder 12 made of H-shaped steel is fixed by welding.
[0025]
In the present embodiment configured as described above, by fixing the ring girder 12 and the anchor frame plate 14 by welding, it is not necessary to form a hole in the ring girder 12, and the drilling is not required. Further, it is not necessary to pass the anchor bolt 10 through the hole of the ring girder 12 when the liner plate 7 is installed.
[0026]
According to the present embodiment, it is not necessary to make a hole in the ring girder 12, so that the number of manufacturing steps of the ring girder 12 can be reduced. In addition, since it is unnecessary to pass the anchor bolts 10 through the holes of the ring girder 12 when installing the liner plate 7, the number of steps for installing the liner plate 7 can be reduced.
[0027]
Next, a second embodiment of the containment vessel according to the present invention will be described with reference to FIG. FIG. 2 is a vertical cross-sectional view of a main part of a base part of a containment vessel according to a second embodiment of the present invention, showing part A of FIG. The same components as those of the first embodiment are denoted by the same reference numerals, and the description of the components is omitted.
[0028]
The liner plate 7 of the reactor containment vessel of the present embodiment has the level of the upper surface of the installed anchor frame 9 adjusted by machining, and a ring girder 12 made of a circular H-shaped steel is placed on the anchor frame 9. The ring gutter 12 and the anchor frame 9 are mounted and fixed by welding.
[0029]
In the present embodiment configured as above, the upper surface of the anchor frame 9 is level-adjusted by machining, and the ring gutter 12 is welded and fixed thereon, so that anchor bolts and nuts become unnecessary, and No need to install anchor bolts and nuts. In addition, level adjustment with anchor bolts and nuts when the liner plate 7 is installed is not required.
[0030]
According to the present embodiment, it is not necessary to attach the anchor bolts and nuts to the anchor frame 9 and the level adjustment using the anchor bolts and nuts is unnecessary, so that the man-hour for installing the liner frame 7 can be reduced.
[0031]
Next, a third embodiment of the containment vessel according to the present invention will be described with reference to FIG.
[0032]
FIG. 3 is an enlarged vertical sectional view of a main part of a base part of a reactor containment vessel according to a third embodiment of the present invention, which shows a portion A in FIG. 4 in an enlarged manner. The same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
[0033]
In FIG. 3, a ring girder 12 made of a circular H-shaped steel of a reactor containment vessel is level-adjusted by a shim plate 13, mounted on an anchor frame 9, and fixed by welding.
[0034]
In the present embodiment configured as above, the anchor bolts and nuts are not required as in the second embodiment, and the level adjustment by the anchor bolts and nuts becomes unnecessary, and the level adjustment is performed by the shim plate 13. Therefore, level adjustment by mechanical processing of the anchor frame 9 can be eliminated.
[0035]
According to the present embodiment, mounting of the anchor bolts and nuts, level adjustment using the anchor bolts and nuts, and machining of the anchor frame 9 for level adjustment are not required, so that the number of steps for installing the liner plate 7 is reduced. be able to.
[0036]
【The invention's effect】
As described above, according to the present invention, the ring girder is fixed to the anchor frame 9 irrespective of the anchor bolts and nuts. It is possible to provide a nuclear reactor containment vessel that does not require level adjustment with anchor bolts and nuts, reduces the number of steps for installing the liner frame, and can reduce the number of steps for installation.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view of a main part of a base part of a containment vessel according to a first embodiment of the present invention.
FIG. 2 is a vertical cross-sectional view of a main part of a base part of a containment vessel according to a second embodiment of the present invention.
FIG. 3 is a vertical sectional view of a main part of a base portion of a containment vessel according to a third embodiment of the present invention.
FIG. 4 is a vertical sectional view of a conventional containment vessel of the present invention and the present invention.
FIG. 5 is an enlarged vertical sectional view of a main part of a conventional reactor containment vessel showing part A in FIG. 4;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Reactor containment vessel 2 ... Diaphragm floor 3 ... Dry well 4 ... Suppression chamber 5 ... Reactor pressure vessel 6 ... Reactor pressure vessel pedestal 7 ... Liner plate 8 ... Reinforced concrete part 9 ... Anchor frame 10 ... Anchor bolt 11 ... Nuts 11a, 11b Nut 12 Ring girder 13 Shim plate 14 Anchor frame plate

Claims (6)

A reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, a pressure suppression chamber holding pool water, the dry well and the pressure A diaphragm floor separating the suppression chamber, and a wall surrounding the dry well and the pressure suppression chamber, wherein the wall is composed of the liner plate and a reinforced concrete part, and the liner plate is connected to an anchor frame via a ring gutter. In the fixed reactor containment vessel, the ring gutter is welded and fixed to an anchor frame plate whose level is adjusted by a nut with respect to an anchor bolt fixed to the anchor frame. . A reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, a pressure suppression chamber holding pool water, the dry well and the pressure A diaphragm floor separating the suppression chamber, and a wall surrounding the dry well and the pressure suppression chamber, wherein the wall is composed of the liner plate and a reinforced concrete part, and the liner plate is connected to an anchor frame via a ring gutter. The reactor containment vessel, wherein the ring gutter is welded and fixed on the anchor frame whose level has been adjusted by machining. A reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, a pressure suppression chamber holding pool water, the dry well and the pressure A diaphragm floor separating the suppression chamber, and a wall surrounding the dry well and the pressure suppression chamber, wherein the wall is composed of the liner plate and a reinforced concrete part, and the liner plate is connected to an anchor frame via a ring gutter. The reactor containment vessel, wherein the ring gutter is fixed on the anchor frame by means of a shim plate and fixed by welding. A reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, a pressure suppression chamber holding pool water, the dry well and the pressure A diaphragm floor separating the suppression chamber, and a wall surrounding the dry well and the pressure suppression chamber, wherein the wall is composed of the liner plate and a reinforced concrete part, and the liner plate is connected to an anchor frame via a ring gutter. In the installation method of the fixed reactor containment vessel, the level of the anchor frame plate is adjusted with a nut with respect to the anchor bolt fixed to the anchor frame, and then, the ring gutter is fixed to the anchor frame plate by welding. A method for installing a containment vessel, comprising: A reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, a pressure suppression chamber holding pool water, the dry well and the pressure A diaphragm floor separating the suppression chamber, and a wall surrounding the dry well and the pressure suppression chamber, wherein the wall is composed of the liner plate and a reinforced concrete part, and the liner plate is connected to an anchor frame via a ring gutter. A method for installing a reactor containment vessel, wherein a ring gutter is welded and fixed on the anchor frame after machining and level adjustment of the anchor frame. A reactor pressure vessel, a reactor pressure vessel pedestal supporting the reactor pressure vessel, a dry well in which the reactor pressure vessel is disposed, a pressure suppression chamber holding pool water, the dry well and the pressure A diaphragm floor separating the suppression chamber, and a wall surrounding the dry well and the pressure suppression chamber, wherein the wall is composed of the liner plate and a reinforced concrete part, and the liner plate is connected to an anchor frame via a ring gutter. In the method for installing a fixed reactor containment vessel, after adjusting the level with a shim plate on the anchor frame, a ring gutter is fixed on the shim plate by welding.

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