JPS62239090A - Method of executing nuclear reactor well - Google Patents
Method of executing nuclear reactor wellInfo
- Publication number
- JPS62239090A JPS62239090A JP61082090A JP8209086A JPS62239090A JP S62239090 A JPS62239090 A JP S62239090A JP 61082090 A JP61082090 A JP 61082090A JP 8209086 A JP8209086 A JP 8209086A JP S62239090 A JPS62239090 A JP S62239090A
- Authority
- JP
- Japan
- Prior art keywords
- chick
- reactor well
- welding
- stage
- reactor
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title description 3
- 238000010276 construction Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 description 20
- 239000002184 metal Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は原子炉格納容器上部に設置される原子炉ウェル
に係り、特に下部ヒナ段のシールベローズ取付に好適な
原子炉ウェルの施工法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a reactor well installed in the upper part of a reactor containment vessel, and particularly relates to a construction method for a reactor well suitable for attaching a seal bellows to a lower chick stage. .
従来の原子炉ウェル下部ヒナ段の施工方法は、下部ヒナ
段部廻りを、あらかじめコンクリートを打ち控えておき
、コンクリート側からシールベローズカバーリングを下
部ヒナ段ライニングに溶接取付を行なっている。さらに
、コンクリート打ち控え部の打設を行ない、最後に中胴
部床ライニングを溶接により取付ける施工方法となって
いた。The conventional construction method for the lower chick stage of a reactor well is to pour concrete around the lower chick stage in advance, and then weld the seal bellows covering to the lower chick stage lining from the concrete side. Furthermore, the construction method involved pouring concrete for the buttresses, and finally attaching the middle trunk floor lining by welding.
なお、この種の方法として関連するものには例えば、特
開昭５９−９１２７３が挙げられる。Incidentally, related methods of this type include, for example, Japanese Patent Application Laid-open No. 59-91273.
、′〔発明が解決しようとする問題点〕）上記従来技術
は、原子炉ウェル下部ヒナ段、特にシールベローズ取付
に関する施工法について配慮がされておらず、下部ヒナ
段部のみ複雑な施工手順となっていた。以下、第２図〜
第３図により従来の施工方法及び問題点について説明す
る。,' [Problems to be solved by the invention]) The above-mentioned conventional technology does not take into account the construction method for attaching the lower chick stage of the reactor well, especially the seal bellows, and only the lower chick stage requires complicated construction procedures. It had become. Below, Figure 2~
The conventional construction method and problems will be explained with reference to FIG.
第２図は、原子炉圧力容器上部の構造を示しており、原
子炉圧力容器１のまわりにＰＣＶ２、上部に原子炉ウェ
ル３が設置される。原子炉ウェル３は、燃料を炉心へ装
荷あるいは炉心から取り出す時の放射線を遮蔽するため
の十分な水を確保する目的で設置され、上部ヒナ段４、
中胴部５及び下部ヒナ段６により構成される。FIG. 2 shows the structure of the upper part of the reactor pressure vessel, in which a PCV 2 is installed around the reactor pressure vessel 1, and a reactor well 3 is installed above it. The reactor well 3 is installed for the purpose of securing sufficient water to shield radiation when fuel is loaded into the reactor core or taken out from the reactor core.
It is composed of a middle trunk section 5 and a lower chick stage 6.
第３図は、従来の下部ヒナ段の構造を示しており、鋼製
ライニング１１、溶接裏当金１２、ドレン１３、シール
ベローズ１４、上部フランジ１５、下部フランジ１６、
カバーリング１７、アンカーボルト１８により構成され
る。FIG. 3 shows the structure of a conventional lower chick stage, which includes a steel lining 11, a welded backing metal 12, a drain 13, a seal bellows 14, an upper flange 15, a lower flange 16,
It is composed of a cover ring 17 and an anchor bolt 18.
下部ヒナ段の施工方法は、中胴部５を据付だ後、各、々
の溶接裏当金１２が設定される。この後、鋼′・ツバ
−袈シライニング１１原子炉ウェル３内側から溶接裏当
金１２に溶接にて取付ける。上部フランジ１５と下部フ
ランジ１６は、シールベローズ１４と溶接にて接続され
、さらに、上部フランジ１５にはカバーリング１７が溶
接にて取付けられる。この上部フランジ１５・下部フラ
ンジ１６・シールベローズ１４及びカバーリング１７は
、工場にて一体製作したものを現地に搬入し、前記設定
された下部ヒナ段６部の溶接裏当金１２に溶接で取付ら
れる。尚、カバーリング１７下部と溶接裏当金１２の溶
接作業は、中胴部５床の限られたスペースから手をのば
して行っている。しかし、第３図に示す如く下部ヒナ段
６廻りは非常に配筋が多く、溶接作業が困難な施工法及
び構造となっている。In the construction method of the lower chick stage, after the middle body part 5 is installed, each welding backing metal 12 is set. Thereafter, the steel lining 11 is attached to the welding backing 12 from the inside of the reactor well 3 by welding. The upper flange 15 and the lower flange 16 are connected to the seal bellows 14 by welding, and furthermore, a cover ring 17 is attached to the upper flange 15 by welding. The upper flange 15, lower flange 16, seal bellows 14, and cover ring 17 are integrally manufactured at the factory, delivered to the site, and attached by welding to the welding backing metal 12 of the six lower chick stages set above. It will be done. Note that the welding work between the lower part of the cover ring 17 and the welding back metal 12 is performed by extending a hand from a limited space on the 5 floors of the middle body. However, as shown in FIG. 3, there are many reinforcements around the lower chick stage 6, making the construction method and structure difficult to weld.
本発明の目的は、下部ヒナ段部廻りの構造及び建築工事
作業を簡略化することにある。An object of the present invention is to simplify the structure and construction work around the lower chick step.
上記目的は、下部ヒナ段部をライニング内張り構造とし
、シールベローズの上部フランジを原子炉レール中胴部
床に溶接することにより達成され゛るー。The above object is achieved by forming the lower chick step into a lining structure and by welding the upper flange of the seal bellows to the reactor rail mid-body floor.
シールベローズの上部フランジは、原子炉プール内側か
ら中胴部床に溶接ができる。それによって、下部ヒナ段
部は、単純なライニング内張り構造となり、従来の配筋
側からの溶接及び下部ヒナ段部のボックスアウトが不要
となる。The upper flange of the seal bellows can be welded to the mid-body floor from inside the reactor pool. As a result, the lower chick stepped portion has a simple lining structure, and conventional welding from the reinforcement side and box-out of the lower chick stepped portion are no longer necessary.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
原子炉ウェルの中胴部５には、溶接裏当金２１を骨組と
し中胴部床２０と鋼製ライニング２３を現地組立エリア
で一体溶接組立された下部ヒナ段６が取付けられる。前
記構成された中胴部５と下部ヒナ段６は、所定位置に設
定され、あらかじめ設定されているドレン用配管と溶接
された後、中胴部５及び下部ヒナ段６廻りのコンクリー
ト打設を行い原子炉ウェルの据付が完了する。A lower chick stage 6 is attached to the middle body 5 of the reactor well, which has a welding backing 21 as a framework and a middle body floor 20 and a steel lining 23 that are integrally welded and assembled in an on-site assembly area. After the configured middle body part 5 and lower chick stage 6 are set at predetermined positions and welded to the preset drain piping, concrete is poured around the middle body part 5 and the lower chick stage 6. The installation of the reactor well was completed.
据付完了した下部ヒナ段には、原子炉ウェル内のプール
水をシールする為シールベローズ１４が取付けられる。A seal bellows 14 is attached to the completed lower chick stage to seal the pool water in the reactor well.
このシールベローズ１４は、下部パヒナ段６に取付ける
為の上部フランジ２４と、原７子炉格納容器リング２６
に取付けられる下部フランジ２５が溶接にて取付けられ
る。又、上部フランジ２５には現地輸送及び据付中にシ
ールベローズ１４の損傷を防止する為、カバーリング１
７が取付けられる。This seal bellows 14 includes an upper flange 24 for attachment to the lower pahina stage 6 and a nuclear reactor containment vessel ring 26.
A lower flange 25 is attached by welding. Additionally, a cover ring 1 is attached to the upper flange 25 to prevent damage to the seal bellows 14 during on-site transportation and installation.
7 is installed.
前記構成されたシールベローズ１４は、据付完了してい
る下部ヒナ段６内に設定され、中胴部床２０と上部フラ
ンジ２４が溶接にて固定される。The seal bellows 14 configured as described above is set in the lower chick stage 6 which has been completely installed, and the middle body floor 20 and the upper flange 24 are fixed by welding.
本実施例によれば、下部ヒナ段６を一体で据付る為、下
部ヒナ段６部のコンクリートボックスアウドが不要とな
る。又、上部フランジ２４を溶接にて取付ける為、下部
ヒナ段６内に埋込むアンカーが不要となる効果がある。According to this embodiment, since the lower chick tier 6 is installed as one piece, the concrete box door of the lower chick tier 6 becomes unnecessary. Furthermore, since the upper flange 24 is attached by welding, there is an effect that an anchor embedded in the lower chick stage 6 is not required.
本発明によれば、シールベローズカバーリングを配筋側
から下部ヒナ段に取付ける為の溶接作業がなくなると同
時に、その溶接作業の為のボックスアウト部がなくなり
、原子炉ウェル廻りの建築工事作業を大巾に短縮出来る
効果がある。According to the present invention, the welding work for attaching the seal bellows covering ring from the reinforcement side to the lower chick stage is eliminated, and at the same time, the box-out part for the welding work is eliminated, and the construction work around the reactor well is simplified. It has the effect of being shortened to a large width.
第１図は本発明の一実施例の原子炉ウェル下部ヒナ段部
の縦断面図、第２図は原子炉ウェル全体の説明図、第３
図は従来の原子炉ウェル下部ヒナ段部の縦断面図である
。
１・・・原子炉圧力容器、２・・・原子炉格納容器、３
・・・原子炉ウェル、４・・・上部ヒナ段、５・・・中
胴部、６・・・下部ヒナ段、１１・・・鋼製ライニング
、１２・・・溶接裏当金、１３・・・ドレン用配管、１
４・・・シールベローズ、１５・・・上部フランジ、１
６・・・下部フランジ、１７・・・カバーリング、１８
・・・アンカー、２０・・・中胴部床、２１・・・溶接
裏当金、２２・・・スタッドジベル、２３・・・鋼製ラ
イニング、２４・・・上部フランジ、２５・・・下部フ
ランジ、２６・・・原子炉格納容器リング。FIG. 1 is a vertical cross-sectional view of the lower chick step part of the reactor well according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of the entire reactor well, and FIG.
The figure is a longitudinal cross-sectional view of a conventional nuclear reactor well lower chick step section. 1... Reactor pressure vessel, 2... Reactor containment vessel, 3
... Reactor well, 4... Upper chick stage, 5... Middle body, 6... Lower chick stage, 11... Steel lining, 12... Welding backing metal, 13.・・Drain piping, 1
4... Seal bellows, 15... Upper flange, 1
6... Lower flange, 17... Covering, 18
... Anchor, 20 ... Middle body floor, 21 ... Welding backing metal, 22 ... Stud dowel, 23 ... Steel lining, 24 ... Upper flange, 25 ... Lower part Flange, 26...Reactor containment vessel ring.
Claims (1)
らなる原子炉ウェルにおいて、中胴部床と下部ヒナ段と
をあらかじめ一体組立したものを据付し、その後、コン
クリートを打設して中胴部床と下部ヒナ段を形成後、上
部フランジと下部フランジとシールベローズから成る原
子炉ウェルベローズを前記下部ヒナ段内に収納し、前記
中胴部床上に上部フランジを取付けることを特徴とする
原子炉ウェルの施工法。1. In the reactor well, which consists of the upper chick stage, the middle trunk side wall, the middle trunk floor, and the lower chick stage, the middle trunk floor and lower chick stage are assembled in advance and installed, and then concrete is poured. After the reactor well bellows consisting of an upper flange, a lower flange, and a seal bellows is housed in the lower chick stage, and the upper flange is installed on the middle trunk floor. A construction method for a nuclear reactor well characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61082090A JPS62239090A (en) | 1986-04-11 | 1986-04-11 | Method of executing nuclear reactor well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61082090A JPS62239090A (en) | 1986-04-11 | 1986-04-11 | Method of executing nuclear reactor well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62239090A true JPS62239090A (en) | 1987-10-19 |
Family
ID=13764739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61082090A Pending JPS62239090A (en) | 1986-04-11 | 1986-04-11 | Method of executing nuclear reactor well |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62239090A (en) |
-
1986
- 1986-04-11 JP JP61082090A patent/JPS62239090A/en active Pending
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