JP2003050291A - Nuclear reactor container - Google Patents
Nuclear reactor containerInfo
- Publication number
- JP2003050291A JP2003050291A JP2001237805A JP2001237805A JP2003050291A JP 2003050291 A JP2003050291 A JP 2003050291A JP 2001237805 A JP2001237805 A JP 2001237805A JP 2001237805 A JP2001237805 A JP 2001237805A JP 2003050291 A JP2003050291 A JP 2003050291A
- Authority
- JP
- Japan
- Prior art keywords
- liner
- wall
- welded
- containment vessel
- reactor containment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内面が鋼製のライ
ナで覆われたコンクリート製の原子炉格納容器に関す
る。TECHNICAL FIELD The present invention relates to a concrete reactor containment vessel having an inner surface covered with a steel liner.
【０００２】[0002]
【従来の技術】内面が鋼製のライナで覆われたコンクリ
ート製容器には、密閉性を必要とする原子炉格納容器な
どがある。この原子炉格納容器は、平坦な底部と、円筒
状の壁部と、この壁部の直径と同じ直径の半球面状の頂
部とが、それぞれがコンクリートで連続して形成され、
この内面がそれぞれ鋼製の底部ライナ、壁部ライナ、頂
部ライナで覆われて漏洩防止を目的とした気密バウンダ
リ（密閉空間）を形成している。2. Description of the Related Art A concrete container whose inner surface is covered with a steel liner includes a reactor containment vessel which requires airtightness. This reactor containment vessel has a flat bottom portion, a cylindrical wall portion, and a hemispherical top portion having the same diameter as the wall portion, each of which is continuously formed of concrete,
This inner surface is covered with a steel bottom liner, a wall liner, and a top liner, respectively, to form an airtight boundary (closed space) for the purpose of preventing leakage.
【０００３】図３に示すように壁部ライナ５４と底部ラ
イナ５５とを接合する基礎部５１は、平行部５３を上下
にしてリング状に溶接で繋がれたＨ形鋼５２の上面に、
壁部ライナ５４の下端部を溶接するとともに、この上側
の平行部５３の内周端部に底部ライナ５５の外縁端部を
溶接した構造である。そして、底部ライナ５５より下側
及び壁部ライナ５４より外側がコンクリートによって埋
設されている。As shown in FIG. 3, a base portion 51 for joining a wall liner 54 and a bottom liner 55 to each other is formed on the upper surface of an H-shaped steel 52 which is connected by welding in a ring shape with a parallel portion 53 arranged vertically.
The lower end of the wall liner 54 is welded, and the outer peripheral end of the bottom liner 55 is welded to the inner peripheral end of the upper parallel part 53. Then, the lower side of the bottom liner 55 and the outer side of the wall liner 54 are buried with concrete.
【０００４】気密バウンダリを構成するライナの各部材
同士の溶接部は、全板厚にわたる完全溶け込み溶接が要
求されるとともに、全溶接部について溶接後に気密検査
が実施される。The welded portion between the members of the liner constituting the airtight boundary is required to be completely penetration welded over the entire plate thickness, and the airtightness inspection is performed on the entire welded portion after the welding.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、図３で
示すように基礎部５１には、Ｈ形鋼５２の上側の平行部
５３と壁部ライナ５４との溶接部５６、Ｈ形鋼５２の上
側の平行部５３と底部ライナ５５との溶接部５７、Ｈ形
鋼５２の上側の平行部５３と壁部ライナ５４との溶接部
５６よりも内径側のＨ形鋼５２の上側の平行部５３同士
の溶接部５８、の３種類の溶接部５６，５７，５８が気
密バウンダリに臨んでできてしまう。そのため、これら
の溶接部５６，５７，５８は、全て気密検査対象とな
る。したがって、Ｈ形鋼５２、壁部ライナ５４、底部ラ
イナ５５を溶接するための溶接手法や、施工管理に手間
がかかるという問題がある。However, as shown in FIG. 3, in the base portion 51, the welded portion 56 between the parallel portion 53 on the upper side of the H-section steel 52 and the wall liner 54 and the upper side of the H-section steel 52 are formed. Of the parallel section 53 and the bottom liner 55, the upper parallel section 53 of the H-section steel 52 on the inner diameter side of the weld section 56 of the upper section 53 of the H-section steel 52 and the wall liner 54. The three kinds of welded portions 56, 57, 58 of the welded portion 58 of No. 1 are exposed to the airtight boundary. Therefore, these welded portions 56, 57, 58 are all subject to airtightness inspection. Therefore, there is a problem that the welding method for welding the H-section steel 52, the wall liner 54, and the bottom liner 55 and the construction management take time.
【０００６】そこで、本発明は、気密バウンダリに臨む
溶接部を減少させるとともに、施工管理が容易なコンク
リート製の原子炉格納容器を提供することを目的とす
る。[0006] Therefore, an object of the present invention is to provide a concrete reactor containment vessel in which the welded portion facing the airtight boundary is reduced and the construction management is easy.
【０００７】[0007]
【課題を解決するための手段】そこで、本発明は、底部
と、この底部に対して起立して設けられる円筒状の壁部
と、この壁部の上部を閉じる頂部とからなる鋼製のライ
ナで内面が覆われた原子炉格納容器において、前記壁部
のライナの下端部を前記底部のライナよりも下方に延長
し、前記底部のライナを前記壁部のライナの内面に溶接
接合する。SUMMARY OF THE INVENTION Therefore, according to the present invention, there is provided a steel liner having a bottom portion, a cylindrical wall portion provided upright with respect to the bottom portion, and a top portion closing the upper portion of the wall portion. In the reactor containment vessel whose inner surface is covered with, the lower end of the liner of the wall portion extends below the liner of the bottom portion, and the liner of the bottom portion is welded to the inner surface of the liner of the wall portion.
【０００８】または、底部と、この底部に対して起立し
て設けられる円筒状の壁部と、この壁部の上部を閉じる
頂部とが、コンクリ−トで一体に形成され、内面が鋼製
のライナで覆われた原子炉格納容器において、前記壁部
のライナの下端部に平行部が上下に配置されたＨ形鋼ア
ンカーを溶接し、前記Ｈ形鋼アンカー及び前記壁部のラ
イナの下端部をコンクリート打設基礎構造とし、前記底
部のライナを前記壁部のライナの内面に溶接接合する。Alternatively, a bottom portion, a cylindrical wall portion provided upright with respect to the bottom portion, and a top portion that closes the upper portion of the wall portion are integrally formed by concrete, and the inner surface is made of steel. In a reactor containment vessel covered with a liner, an H-shaped steel anchor having parallel portions arranged above and below is welded to a lower end portion of the liner of the wall portion, and the H-shaped steel anchor and the lower end portion of the liner of the wall portion are welded. Is a concrete pouring foundation structure, and the liner at the bottom is welded to the inner surface of the liner at the wall.
【０００９】このように底部のライナと壁部のライナと
を直接溶接することで気密バウンダリに臨む溶接部位を
減少させることができる。By directly welding the liner at the bottom and the liner at the wall in this manner, the welded portion facing the airtight boundary can be reduced.
【００１０】また、前記溶接接合は、前記壁部のライナ
の内面に取付けた裏当て金を介し、前記底部のライナと
前記壁部ライナとを片側開先溶接にて接合する。このよ
うにすることで、底部のライナの溶接接合に対する施工
管理等の簡素化を図ることができる。In the welded joint, the bottom liner and the wall liner are joined by one-sided groove welding through a backing metal attached to the inner surface of the wall liner. By doing so, it is possible to simplify the construction management and the like for the welding and joining of the bottom liner.
【００１１】[0011]
【発明の実施の形態】本発明の一実施形態について、図
１及び図２を参照して説明する。図１に示す原子炉格納
容器１は、コンクリート製容器であって、底部２と、底
部２に対して起立して設けられた円筒状の壁部３と、こ
の壁部３の直径と同じ直径の半球面形状の頂部４とがコ
ンクリートで一体に形成されている。この原子炉格納容
器１の内面は、底部２が底部ライナ５で、壁部３が壁部
ライナ６で、頂部４が頂部ライナ７でそれぞれ覆われて
気密バウンダリを形成している。そして、各ライナ５，
６，７は互いに溶接で繋ぎ合されている。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The reactor containment vessel 1 shown in FIG. 1 is a concrete vessel, and has a bottom portion 2, a cylindrical wall portion 3 standing upright with respect to the bottom portion 2, and a diameter equal to the diameter of the wall portion 3. And the hemispherical top part 4 are integrally formed of concrete. The inner surface of the reactor containment vessel 1 has a bottom 2 covered with a bottom liner 5, a wall 3 covered with a wall liner 6, and a top 4 covered with a top liner 7 to form an airtight boundary. And each liner 5,
6 and 7 are connected to each other by welding.
【００１２】図２で示すように、基礎部８は、底部ライ
ナ５よりも下方のコンクリートに埋没する壁部ライナ６
の下端部６ａと、平行部９ａ，９ｂを上下に配置して下
端部６ａに沿ってリング状に溶接で繋がれたＨ形鋼アン
カー（以下Ｈ形鋼とする）１０の上面１０ａとが溶接さ
れて形成されている。また、下端部６ａとＨ形鋼１０の
上面１０ａの溶接部１１よりも上方の壁部ライナ６の内
面に裏当て金１２を取り付け、この裏当て金１２を用い
て底部ライナ５と壁部ライナ６とを直接溶接にて接合し
ている。そして、底部ライナ５より下方、及び壁部ライ
ナ６より外側にコンクリート１５を打設し、基礎部８を
コンクリート１５に埋没させる。なお、底部ライナ５と
壁部ライナ６との溶接接合は、完全溶け込み溶接であ
る。As shown in FIG. 2, the foundation 8 has a wall liner 6 which is buried in concrete below the bottom liner 5.
The lower end 6a of the H-shaped steel anchor (hereinafter referred to as H-shaped steel) 10 welded in a ring shape along the lower end 6a by arranging the parallel portions 9a and 9b in the vertical direction. Is formed. Further, a backing metal 12 is attached to the inner surface of the wall liner 6 above the welded portion 11 of the lower end portion 6a and the upper surface 10a of the H-shaped steel 10, and the bottom liner 5 and the wall liner 6 are used by using this backing metal 12. 6 and 6 are directly joined by welding. Then, concrete 15 is placed below the bottom liner 5 and outside the wall liner 6 to bury the foundation 8 in the concrete 15. The weld connection between the bottom liner 5 and the wall liner 6 is complete penetration welding.
【００１３】なお、Ｈ形鋼１０同士は、例えば両側開先
による溶接部１３で溶接されている。また、本実施形態
において、下端部６ａとＨ形鋼１０の上面１０ａとの溶
接部１１は、裏当て金１４を用いた溶接にて接合されて
いるが、気密バウンダリに臨む溶接部ではない。したが
って、例えば、裏当て金１４を用いずに隅肉溶接の並列
溶接もしくは千鳥溶接などを用いることで、溶接による
歪を最小限に抑えることができる。The H-section steels 10 are welded to each other at, for example, a welded portion 13 formed by a groove on both sides. Further, in the present embodiment, the welded portion 11 between the lower end portion 6a and the upper surface 10a of the H-shaped steel 10 is joined by welding using the backing metal 14, but it is not the welded portion facing the airtight boundary. Therefore, for example, by using parallel welding of fillet welding or staggered welding without using the backing metal 14, distortion due to welding can be minimized.
【００１４】また、基礎部８は、壁部ライナ６の下端部
６ａをＨ形鋼１０の上面１０ａに溶接した構造である
が、Ｈ形鋼１０は、壁部ライナ６の垂直荷重を受けて、
底部ライナ５と壁部ライナ６の溶接部１６に剪断応力が
かからないようにするためのアンカーとして機能するも
のであれば、溝形鋼やＩ形鋼であってもよいし、壁部ラ
イナ６の下端部６ａに水平方向に帯鋼を溶接したもので
あってもよい。The foundation 8 has a structure in which the lower end 6a of the wall liner 6 is welded to the upper surface 10a of the H-section steel 10. The H-section steel 10 receives the vertical load of the wall liner 6. ,
As long as it functions as an anchor for preventing shear stress from being applied to the welded portion 16 of the bottom liner 5 and the wall liner 6, channel steel or I-shaped steel may be used. It is also possible to weld the strip steel horizontally to the lower end portion 6a.
【００１５】以上のように構成された原子炉格納容器１
の基礎部８は、まずＨ形鋼１０が壁部ライナ６の下端部
６ａに沿うようにリング状に溶接で繋がれて設置され、
上面１０ａより低い位置までコンクリート１５が打設さ
れる。次に、壁部ライナ６がＨ形鋼１０の上面１０ａに
配置され、裏当て金１４を用いて壁部ライナ６の下端部
６ａとＨ形鋼１０の上面１０ａとを溶接する。底部ライ
ナ５が敷設される位置に合せて、壁部ライナ６の内側に
裏当て金１２を取付ける。Reactor containment vessel 1 configured as described above
First, the H-shaped steel 10 is installed by welding in a ring shape along the lower end 6a of the wall liner 6,
Concrete 15 is poured to a position lower than the upper surface 10a. Next, the wall liner 6 is arranged on the upper surface 10a of the H-shaped steel 10, and the lower end 6a of the wall liner 6 and the upper surface 10a of the H-shaped steel 10 are welded using the backing metal 14. The backing plate 12 is attached to the inside of the wall liner 6 in accordance with the position where the bottom liner 5 is laid.
【００１６】そして、この裏当て金１２と、底部ライナ
５を水平に設置して、溶接にて壁部ライナ６と接合す
る。また、底部ライナ５を互いに溶接するためのＨ形鋼
（図示せず）とに底部ライナ５を掛け渡し、外周を完全
溶け込み接合する。予め底部ライナ５を取付ける位置に
合せて裏当て金１２を取付け、この裏当て金１２に底部
ライナ５を乗せて開先を形成するので、底部ライナ５の
位置決めや開先合せが容易であるとともに、溶接の作業
性もよい。したがって、この溶接部の施工管理が容易で
ある。Then, the backing plate 12 and the bottom liner 5 are installed horizontally and joined to the wall liner 6 by welding. Further, the bottom liner 5 is spanned over an H-shaped steel (not shown) for welding the bottom liner 5 to each other, and the outer periphery is completely melted and joined. Since the backing plate 12 is attached in advance to the position where the bottom liner 5 is mounted and the bottom liner 5 is placed on the backing plate 12 to form the groove, it is easy to position and align the groove liner 5. The workability of welding is also good. Therefore, construction management of this welded portion is easy.
【００１７】底部ライナ５と壁部ライナ６の内面との溶
接部１６は、気密バウンダリに臨む溶接部であるので、
気密検査などが行われる。そして、底部ライナ５の下、
及び壁部ライナ６の外周にコンクリート１５が打設され
る。Since the welded portion 16 between the bottom liner 5 and the inner surface of the wall liner 6 is a welded portion facing the airtight boundary,
Airtight inspection is performed. And under the bottom liner 5,
Further, concrete 15 is placed on the outer periphery of the wall liner 6.
【００１８】以上のように構成された原子炉格納容器１
は、基礎部８に関して気密バウンダリに臨む溶接部は、
底部ライナ５と壁部ライナ６との溶接部１６のみであ
る。そして、気密バウンダリの外部に配置されたＨ形鋼
１０の上面１０ａと壁部ライナ６の下端部６ａとの溶接
部１１、及びＨ形鋼１０同士の溶接部１３は、気密検査
の対象外となる。Reactor containment vessel 1 configured as described above
Is the welded part facing the airtight boundary with respect to the base part 8.
Only the weld 16 between the bottom liner 5 and the wall liner 6 is present. The welded portion 11 between the upper surface 10a of the H-shaped steel 10 and the lower end portion 6a of the wall liner 6 and the welded portion 13 between the H-shaped steels 10 arranged outside the airtight boundary are not subject to the airtightness inspection. Become.
【００１９】したがって、気密検査の対象となる施工管
理の複雑な溶接部位が減少する。また、Ｈ形鋼１０に関
する溶接部１１，１３が全て気密検査の対象外となるこ
とで、これら溶接部１１，１３が設けられるＨ形鋼１０
の材料の選定や検査などの施工管理が容易になる。Therefore, the number of welded parts which are subject to the airtightness inspection and which are complicated in construction management is reduced. Further, since all the welded portions 11 and 13 related to the H-section steel 10 are excluded from the airtightness inspection, the H-sectioned steel 10 provided with these welded sections 11 and 13 is excluded.
The construction management such as the selection and inspection of the material will be easy.
【００２０】[0020]
【発明の効果】底部と、この底部に対して起立して設け
られた円筒状の壁部と、この壁部の上部を閉じる頂部と
がコンクリートで一体に形成され、内面が鋼製のライナ
で覆われた原子炉格納容器において、壁部のライナの下
端部を底部のライナよりも下方に延長し、底部のライナ
を壁部のライナの内面に溶接接合したので、気密バウン
ダリに臨む溶接部位が減少する。したがって、気密検査
の対象となる溶接部位が減少するとともに、気密検査の
対象外となった溶接部位の施工管理が容易となる。The bottom part, the cylindrical wall part standing upright with respect to the bottom part, and the top part for closing the upper part of the wall part are integrally formed of concrete, and the inner surface is made of a steel liner. In the covered reactor containment vessel, the lower end of the wall liner is extended below the bottom liner, and the bottom liner is welded to the inner surface of the wall liner, so the welded part facing the airtight boundary is Decrease. Therefore, the number of welded parts to be subjected to the airtightness inspection is reduced, and the work management of the welded part not to be subjected to the airtightness inspection becomes easy.
【図１】本発明の一実施形態の原子炉格納容器を示す断
面図。FIG. 1 is a cross-sectional view showing a reactor containment vessel according to an embodiment of the present invention.
【図２】図１中のＦ２で示す原子炉格納容器の基礎部を
示す斜視図。FIG. 2 is a perspective view showing a base portion of a reactor containment vessel indicated by F2 in FIG.
【図３】従来の原子炉格納容器の基礎部を示す斜視図。FIG. 3 is a perspective view showing a base portion of a conventional reactor containment vessel.
１…原子炉格納容器 ２…底部 ３…壁部 ４…頂部 ５…底部ライナ（底部のライナ） ６…壁部ライナ（壁部のライナ） ６ａ…下端部 ９ａ，９ｂ…平行部 １０…Ｈ形鋼アンカー １０ａ…上面 １２…裏当て金 １５…コンクリート 1 ... Reactor containment vessel 2 ... bottom 3 ... Wall 4 ... top 5 ... Bottom liner (bottom liner) 6 ... Wall liner (wall liner) 6a ... lower end 9a, 9b ... Parallel part 10 ... H-shaped steel anchor 10a ... top surface 12 ... Backing gold 15 ... Concrete
Claims (3)
れる円筒状の壁部と、この壁部の上部を閉じる頂部とか
らなる鋼製のライナで内面が覆われた原子炉格納容器に
おいて、 前記壁部のライナの下端部を前記底部のライナよりも下
方に延長し、前記底部のライナを前記壁部のライナの内
面に溶接接合したことを特徴とする原子炉格納容器。1. A reactor containment vessel whose inner surface is covered with a steel liner having a bottom, a cylindrical wall provided upright with respect to the bottom, and a top closing the upper part of the wall. The reactor containment vessel according to claim 1, wherein a lower end portion of the liner of the wall portion extends below the liner of the bottom portion, and the liner of the bottom portion is welded to an inner surface of the liner of the wall portion.
れる円筒状の壁部と、この壁部の上部を閉じる頂部と
が、コンクリートで一体に形成され、内面が鋼製のライ
ナで覆われた原子炉格納容器において、 前記壁部ライナの下端部に平行部が上下に配置されたＨ
形鋼アンカーを溶接し、前記Ｈ形鋼アンカー及び前記壁
部のライナの下端部をコンクリート打設基礎構造とし、 前記底部のライナを前記壁部のライナの内面に溶接接合
したことを特徴とする原子炉格納容器。2. A bottom portion, a cylindrical wall portion provided upright with respect to the bottom portion, and a top portion for closing an upper portion of the wall portion are integrally formed of concrete, and an inner surface is made of a steel liner. In a covered reactor containment vessel, a parallel line is arranged above and below the lower end of the wall liner.
It is characterized in that a shaped steel anchor is welded, the H shaped steel anchor and the lower end of the liner of the wall portion are made into a concrete casting foundation structure, and the liner of the bottom portion is welded to the inner surface of the liner of the wall portion. Reactor containment vessel.
に取付けた裏当て金を介し前記底部のライナと前記壁部
のライナとを片側開先溶接にて接合したことを特徴とす
る請求項１または請求項２に記載の原子炉格納容器。3. The welded joint is characterized in that the liner of the bottom portion and the liner of the wall portion are joined by one-side groove welding through a backing metal attached to the inner surface of the liner of the wall portion. The reactor containment vessel according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001237805A JP2003050291A (en) | 2001-08-06 | 2001-08-06 | Nuclear reactor container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001237805A JP2003050291A (en) | 2001-08-06 | 2001-08-06 | Nuclear reactor container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003050291A true JP2003050291A (en) | 2003-02-21 |
Family
ID=19068824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001237805A Withdrawn JP2003050291A (en) | 2001-08-06 | 2001-08-06 | Nuclear reactor container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003050291A (en) |
-
2001
- 2001-08-06 JP JP2001237805A patent/JP2003050291A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20081007 |