JPH03279895A - Installing method for nuclear reactor pressure vessel support pedestal - Google Patents
Installing method for nuclear reactor pressure vessel support pedestalInfo
- Publication number
- JPH03279895A JPH03279895A JP2078656A JP7865690A JPH03279895A JP H03279895 A JPH03279895 A JP H03279895A JP 2078656 A JP2078656 A JP 2078656A JP 7865690 A JP7865690 A JP 7865690A JP H03279895 A JPH03279895 A JP H03279895A
- Authority
- JP
- Japan
- Prior art keywords
- pedestal
- unit
- pressure vessel
- support pedestal
- reactor pressure
- 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.)
- Granted
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims description 15
- 238000009434 installation Methods 0.000 abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 17
- 238000004378 air conditioning Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 101100491335 Caenorhabditis elegans mat-2 gene Proteins 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 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
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は原子力発電所の建設技術に係り、特に沸騰水型
原子炉の原子炉圧力容器を支持する原子炉圧力容器支持
ペデスタルの据付方法に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to construction technology for a nuclear power plant, and in particular to a reactor pressure vessel support for supporting a reactor pressure vessel of a boiling water reactor. Concerning how to install a pedestal.
（従来の技術）
軽水炉としての沸騰水型原子炉（ＢＷＲ）や改良形沸騰
水型原子炉（ＡＢＷＲ）は、原子炉建屋内に原子炉格納
容器が格納され、この原子炉格納容器内に原子炉圧力容
器が収容される。原子炉圧力容器は原子炉建屋基礎マッ
ト上に立設された原子炉圧力容器支持ペデスタル（以下
、ＲＰＶ支持ペデスタルという。）により支持される。(Prior art) In a boiling water reactor (BWR) or an improved boiling water reactor (ABWR) as a light water reactor, a reactor containment vessel is housed in the reactor building, and the nuclear reactor is stored inside the reactor containment vessel. A furnace pressure vessel is housed. The reactor pressure vessel is supported by a reactor pressure vessel support pedestal (hereinafter referred to as RPV support pedestal) that is erected on the reactor building foundation mat.
ＲＰＶ支持ペデスタル１は、第４図に示すように原子力
発電所の建設時に、原子炉建屋基礎マット２上に設置さ
れ、ＲＰ■支持ペデスタルアンカフレーム３およびペデ
スタルリングガーダ４により据付けられる。この鋼製Ｒ
ＰＶ支持ペデスタル１は、揚重機５の揚重性能に合せて
予め製作工場で製造される。従来のＲＰＶ支持ペデスタ
ル１は水平６分割構造（ＲＰＶ支持ペデスタルを６つの
スリーブ状あるいはトーラス状ペデスタルユニットに分
割した構造としたもの）であったり、また縦４分割で水
平４分割構造に細分化されており、この細分化されたペ
デスタルユニットを組み立てて一体化することにより構
成される。As shown in FIG. 4, the RPV support pedestal 1 is installed on a reactor building foundation mat 2 during the construction of a nuclear power plant, and is installed by an RP support pedestal anchor frame 3 and a pedestal ring girder 4. This steel R
The PV support pedestal 1 is manufactured in advance at a manufacturing factory in accordance with the lifting performance of the lifting machine 5. The conventional RPV support pedestal 1 has a horizontal six-divided structure (a structure in which the RPV support pedestal is divided into six sleeve-shaped or torus-shaped pedestal units), or it is subdivided into a vertical four-division structure and a horizontal four-division structure. It is constructed by assembling and integrating these subdivided pedestal units.
工場で製造された例えば水平６分割構造のＲＰ■支持ペ
デスタル１は海上輸送にて建設現場近くの水切設備に陸
揚げして水切りされ、その後、トレーラにて建設現場の
揚重機５下まで搬送される。For example, the RP support pedestal 1, which has a horizontal six-part structure, manufactured in a factory is transported by sea to a drainage facility near the construction site, where it is drained, and then transported by trailer to the bottom of the lifting machine 5 at the construction site. .
そして、揚重機５にて鋼製のＲＰＶ支持ペデスタル１の
ユニット１ａを吊設して原子炉格納容器６内のＲＰＶ支
持ペデスタル基礎部（ペデスタルリングガーダ４）上に
設置し、据付ける。以後、残りのペデスタルユニットｌ
ｂ、ｌｃ等を下から順次据付けていき、途中で、ＲＰＶ
支持ペデスタル１のグラウトホール内にコンクリート圧
送パイプ（図示せず）によりコンクリートを注入して充
填させており、この充填後、残りのペデスタルユニット
の搬入、据付けを行なっていた。Then, the unit 1a of the steel RPV support pedestal 1 is suspended by the lifting machine 5 and installed on the RPV support pedestal foundation (pedestal ring girder 4) in the reactor containment vessel 6. After that, the remaining pedestal units
B, LC, etc. are installed sequentially from the bottom, and in the middle, RPV
Concrete was injected into the grout hole of the support pedestal 1 using a concrete pressure pipe (not shown) to fill it, and after this filling, the remaining pedestal units were carried in and installed.
（発明が解決しようとする課題）
従来のＲＰＶ支持ペデスタルの据付方法においては、揚
重機の性能によりペデスタルユニットの吊上げ形状や重
量が決められてしまうために、ペデスタルユニットを細
分化しなければならず、建設現場での作業量が多かった
り、また、この作業量に比例して建設工期が長くなった
り、さらには、ペデスタルユニット同士の溶接箇所が多
く、溶接線が長くなるため、据付けや検査工数が多くな
る問題があった。また、ＲＰＶ支持ペデスタルが細分化
されているため、ＲＰＶ支持ペデスタル据付けのための
搬入回数やその日数が多くなったり、作業の安全性を図
る上で問題があった。(Problems to be Solved by the Invention) In the conventional method of installing an RPV support pedestal, the lifting shape and weight of the pedestal unit are determined by the performance of the lifting machine, so the pedestal unit must be segmented. The amount of work required at the construction site is large, and the construction period becomes longer in proportion to the amount of work.Furthermore, there are many welding points between the pedestal units, and the welding lines become long, which reduces installation and inspection man-hours. There were many problems. Furthermore, since the RPV support pedestal is segmented, the number of times the RPV support pedestal must be installed and the number of days required for installation are increased, and there are problems in terms of work safety.
本発明は、上述した事情を考慮してなされたもので、Ｒ
ＰＶ支持ペデスタルの据付工数を低減させて建設工期を
大幅に短縮させるとともに、据付作業の安全性を向上さ
せた原子炉圧力容器支持ペデスタルの据付方法を提供す
ることを目的とする。The present invention was made in consideration of the above-mentioned circumstances, and R
The purpose of the present invention is to provide a method for installing a reactor pressure vessel support pedestal that significantly shortens the construction period by reducing the number of installation steps for a PV support pedestal, and improves the safety of the installation work.
（課題を解決するための手段）
本発明に係る原子炉圧力容器支持ペデスタルの据付方法
は、上述した課題を解決するために、原子炉建屋基礎マ
ットに原子炉圧力容器支持ペデスタル基礎部を形成し、
この基礎部に水平２分割された原子炉圧力容器支持ペデ
スタルの水平ベント部ペデスタルユニットを据付け、こ
のペデスタルユニット上に連結孔部ペデスタルユニット
を据付ける方法を提供するものである。(Means for Solving the Problems) In order to solve the above-mentioned problems, the method for installing a reactor pressure vessel support pedestal according to the present invention includes forming a reactor pressure vessel support pedestal foundation part on a reactor building foundation mat. ,
A method is provided for installing a horizontal vent part pedestal unit of a reactor pressure vessel support pedestal horizontally divided into two parts on this foundation part, and installing a connecting hole part pedestal unit on this pedestal unit.
（作用）
この原子炉圧力容器（ＲＰ Ｖ）支持ペデスタルの据付
方法は、ＲＰＶ支持ペデスタルを水平２分割構造として
水平ベント部のペデスタルユニットと連結孔部のペデス
タルユニットとに構成し、ＲＰＶ支持ペデスタル基礎部
に水平ベント部ペデスタルユニットを据付けた後に、こ
のペデスタルユニット上に連結孔部ペデスタルユニット
を据付ける方法であり、この据付方法により、据付工数
を低減させて建設工期を大幅に短縮させることができ、
作業の安全性を向上させることができる。(Function) This method of installing the reactor pressure vessel (RPV) support pedestal is to construct the RPV support pedestal into a horizontally divided structure into a pedestal unit in the horizontal vent part and a pedestal unit in the connecting hole part, and install the RPV support pedestal on the RPV support pedestal foundation. This is a method of installing a horizontal vent pedestal unit on the pedestal unit, and then installing a connecting hole pedestal unit on top of this pedestal unit.This installation method reduces the number of installation steps and significantly shortens the construction period. ,
Work safety can be improved.
（実施例）
以下、本発明に係る原子炉圧力容器支持ペデスタルの据
付方法の実施例を添付図面を参照して説明する。(Example) Hereinafter, an example of the method for installing a reactor pressure vessel support pedestal according to the present invention will be described with reference to the accompanying drawings.
第１図は本発明の据付方法が適用される沸騰水型原子炉
の原子力発電所の建設現場を示す説明図である。この原
子力発電所においては、原子炉建屋１０の基礎部１１内
に原子炉圧力容器（ＲＰ Ｖ）支持ペデスタルアンカフ
レーム１２およびペデスタルリングガーダ１３を設置し
、ＲＰＶ支持ペデスタル１４の基礎部（支持部）を原子
炉格納容器１６内に構成するとともに、コンクリートを
打設して原子炉建屋基礎マットを形成する。FIG. 1 is an explanatory diagram showing a construction site of a nuclear power plant for a boiling water reactor to which the installation method of the present invention is applied. In this nuclear power plant, a reactor pressure vessel (RPV) support pedestal anchor frame 12 and a pedestal ring girder 13 are installed in the foundation 11 of the reactor building 10, and the foundation (support part) of the RPV support pedestal 14 is installed. are constructed in the reactor containment vessel 16, and concrete is poured to form a reactor building foundation mat.
一方、ＲＰＶ支持ペデスタル１４は水平２分割構造に形
成され、水平ベント部ペデスタルユニット１４ａと連結
孔部ペデスタルユニット１４ｂとから構成される。水平
２分割構造のベデスタルユニッ）１４ａ、１４ｂは製作
工場で予め製造され、海上輸送で搬送される。製作工場
では、第２図に示すように連結孔部ペデスタルユニット
１４ｂの連結孔１７内に、上部ドライウェルと下部ドラ
イウェルとを連絡する配管１８、ケーブルトレイ１９、
空調用ダクト２０．コンジット２１およびサポート２２
等を組み込んで、一体的に据付ける。On the other hand, the RPV support pedestal 14 is formed into a horizontal two-part structure, and is composed of a horizontal vent part pedestal unit 14a and a connecting hole part pedestal unit 14b. The vedestal units (14a, 14b) having a horizontal two-part structure are manufactured in advance at a manufacturing factory and transported by sea. In the manufacturing factory, as shown in FIG. 2, in the connecting hole 17 of the connecting hole pedestal unit 14b, piping 18 connecting the upper dry well and the lower dry well, a cable tray 19,
Air conditioning duct 20. Conduit 21 and support 22
etc., and install them in one piece.
なお、符号２３は点検架台である。In addition, the code|symbol 23 is an inspection stand.
また、製作工場で製造されたＲＰＶ支持ペデスタル１４
のペデスタルユニット１４ａ、１４ｂは海上輸送により
、原子力発電所の建設現場近くの水切設備に水揚げして
水切りする。その後、トレーラまたは特殊車輌により建
設現場の揚重機２４下まで運ぶ。この揚重機２４は、例
えば７５０トン級のクローラクレーン等の大型揚重機で
ある。In addition, the RPV support pedestal 14 manufactured at the manufacturing factory
The pedestal units 14a and 14b are transported by sea, and the water is unloaded to a drainage facility near the construction site of the nuclear power plant and drained. Thereafter, it is transported to the construction site below the lifting machine 24 by a trailer or special vehicle. This lifting machine 24 is a large-sized lifting machine such as a 750-ton class crawler crane, for example.
揚重機２４は初めにＲＰＶ支持ペデスタル１４の水平ベ
ント部ペデスタルユニット１４ａを吊上げて、原子炉格
納容器１６内のＲＰＶ支持ペデスタル基礎部（ペデスタ
ルリングガーダ１３）上に搬入し、この基礎部に設けら
れたペデスタルリングガーダ１３上に据付ける。この水
平ベント部ペデスタルユニット１４ａ据付は後に、この
ペデスタルユニット１４ａ上に残りの連結孔部ペデスタ
ルユニット１４ｂを搬入して、据付ける。The lifting machine 24 first lifts the horizontal vent part pedestal unit 14a of the RPV support pedestal 14, carries it onto the RPV support pedestal foundation (pedestal ring girder 13) in the reactor containment vessel 16, and carries it onto the RPV support pedestal foundation (pedestal ring girder 13), which is installed on this foundation. Install it on the pedestal ring girder 13. After installing this horizontal vent part pedestal unit 14a, the remaining connecting hole part pedestal unit 14b is carried in and installed on this pedestal unit 14a.
連結孔部ペデスタルユニツ）１４ｂの据付完了後に、第
３図に示すように、コンクリート圧送パイプ２６により
グラウトホール２７内へコンクリド２８を注入し、充填
させる。コンクリート２８の充填が終了次第グラウトホ
ール２７を盲板で塞ぎ、ＲＰＶ支持ペデスタル１４の据
付作業が完了する。なお、符号２９は原子炉圧力容器で
あり、符号３０は原子炉格納容器１６内の上部ドライウ
ェルと下部ドライウェルとを連絡する連絡孔である。ま
た、符号３１は水平ベント管、３２は垂直管である。After the installation of the connecting hole pedestal unit 14b is completed, as shown in FIG. 3, concrete 28 is injected into the grout hole 27 using the concrete pressure pipe 26 to fill it. As soon as the filling of the concrete 28 is completed, the grout hole 27 is closed with a blind plate, and the installation work of the RPV support pedestal 14 is completed. In addition, the code|symbol 29 is a reactor pressure vessel, and the code|symbol 30 is a communication hole which communicates the upper dry well and lower dry well in the reactor containment vessel 16. Further, numeral 31 is a horizontal vent pipe, and 32 is a vertical pipe.
このＲＰＶ支持ペデスタルの据付作業においては、鋼製
ＲＰＶ支持ペデスタル１４の重量に合せて大型揚重機２
４を採用することにより、ＲＰＶ支持ペデスタル１４は
水平２分割構造と大ブロツク化させることができる。こ
のため、建設現場での工事量を減少させることができる
。この工事量の減少により、ＲＰＶ支持ペデスタル１４
の据付工期が短縮され、また、溶接作業も激減するので
、溶接作業のために投入される作業員数を大幅に減らす
ことができる。In this RPV support pedestal installation work, a large lifting machine 2 is used to match the weight of the steel RPV support pedestal 14.
4, the RPV support pedestal 14 can be made into a horizontal two-part structure and a large block. Therefore, the amount of work at the construction site can be reduced. Due to this reduction in the amount of work, the RPV support pedestal 14
Since the installation period is shortened and the amount of welding work is drastically reduced, the number of workers required for welding work can be significantly reduced.
また、ＲＰＶ支持ペデスタル１４の各ペデスタルユニッ
ト１４ａ、１４ｂを原子炉建屋基礎マット１１上に搬入
して据付ける回数が減るので、ペデスタルユニット１４
ａ、１４ｂの投入作業を短期間のうちに行なうことがで
き、作業の安全性を向上させることができる。Moreover, since the number of times each pedestal unit 14a, 14b of the RPV support pedestal 14 is carried and installed on the reactor building foundation mat 11 is reduced, the pedestal unit 14
The work of putting in parts a and 14b can be done in a short period of time, and the safety of the work can be improved.
さらに、連結孔部ペデスタルユニット１４ｂの連結孔１
７内に連絡配管１８や空調ダクト２０、ケーブルトレイ
１９等を製作工場にて先付けして一体化させることもで
きるので、現地の建設現場での据付作業が簡素化される
とともに、作業環境が悪い建設現場での危険作業からも
開放され、作業工数の低減を通じて品質の向上を図るこ
とができる。なお、連結配管１８や空調ダクト２０、ケ
ーブルトレイ１９等は、建設現場にてＲＰＶ支持ペデス
タル１４内に収納保持させるようにしてもよい。Furthermore, the connecting hole 1 of the connecting hole pedestal unit 14b
7, the connecting piping 18, air conditioning duct 20, cable tray 19, etc. can be pre-installed and integrated at the manufacturing factory, which simplifies the installation work at the local construction site and eliminates bad working environments. It is also freed from dangerous work at construction sites, and it is possible to improve quality by reducing the number of work hours. Note that the connecting pipe 18, air conditioning duct 20, cable tray 19, etc. may be stored and held within the RPV support pedestal 14 at the construction site.
以上に述べたように本発明に係る原子炉圧力容器支持ペ
デスタルの据付方法においては、原子炉圧力容器支持ペ
デスタルを水平ベント部ペデスタルユニットと連結孔部
ペデスタルユニットから構成し、原子炉格納容器内の原
子炉圧力容器支持ペデスタル基礎部に水平ベント部ペデ
スタルユニットを据付け、このペデスタルユニット上に
連結孔部ペデスタルユニットを据付ける方法であるから
、原子炉圧力容器支持ペデスタルの搬入・据付工数を低
減させて建設工期を大幅に短縮させることができるとと
もに、各ペデスタルユニットを原子炉圧力容器支持ペデ
スタル基礎部に搬入して据付ける回数が減少するので、
危険性を伴う据付作業やその作業日数が減少し、作業の
安全性を向上させることができる。As described above, in the method for installing a reactor pressure vessel support pedestal according to the present invention, the reactor pressure vessel support pedestal is composed of a horizontal vent part pedestal unit and a connecting hole part pedestal unit, and This method involves installing the horizontal vent pedestal unit at the base of the reactor pressure vessel support pedestal, and installing the connecting hole pedestal unit on top of this pedestal unit, reducing the man-hours required for transporting and installing the reactor pressure vessel support pedestal. The construction period can be significantly shortened, and the number of times each pedestal unit must be transported and installed at the reactor pressure vessel support pedestal foundation is reduced.
Dangerous installation work and the number of work days required can be reduced, and work safety can be improved.
第１図は本発明に係る原子炉圧力容器支持（ＲＰ■）ペ
デスタルの据付方法を適用した原子力発電所の建設現場
を示す説明図、第２図はＲＰＶ支持ペデスタルの連結孔
部ペデスタルユニットの連結孔に取付けられる連絡配管
、ケーブルトレイ、空調用ダクト等の取付状態を示す図
、第３図はＲＰＶ支持ペデスタルの断面形状を簡略的に
示す縦断面図、第４図は従来のＲＰＶ支持ペデスタルの
据付方法を示す説明図である。
１０・・・原子炉建屋、１１・・・原子炉建屋基礎マッ
ト（基礎部）、１２・・・原子炉圧力容器支持ペデスタ
ルアンカフレーム、１３・・・ペデスタルリングガーダ
（原子炉圧力容器支持ペデスタル基礎部）、１４・・・
原子炉圧力容器支持ペデスタル、１４ａ。
１４ｂ・・・ペデスタルユニット、１６・・・原子炉格
納容器。Figure 1 is an explanatory diagram showing a construction site of a nuclear power plant to which the reactor pressure vessel support (RP■) pedestal installation method according to the present invention is applied, and Figure 2 is the connection of the connecting hole of the RPV support pedestal and the pedestal unit. A diagram showing the installation state of connecting pipes, cable trays, air conditioning ducts, etc. that are installed in the holes. Figure 3 is a vertical cross-sectional view that simply shows the cross-sectional shape of the RPV support pedestal. Figure 4 is a diagram of the conventional RPV support pedestal. It is an explanatory view showing an installation method. DESCRIPTION OF SYMBOLS 10... Reactor building, 11... Reactor building foundation mat (foundation part), 12... Reactor pressure vessel support pedestal anchor frame, 13... Pedestal ring girder (reactor pressure vessel support pedestal foundation) part), 14...
Reactor pressure vessel support pedestal, 14a. 14b... Pedestal unit, 16... Reactor containment vessel.
Claims (1)
基礎部を形成し、この基礎部に水平２分割された原子炉
圧力容器支持ペデスタルの水平ベント部ペデスタルユニ
ットを据付け、このペデスタルユニット上に連結孔部ペ
デスタルユニットを据付けることを特徴とする原子炉圧
力容器支持ペデスタルの据付方法。A reactor pressure vessel support pedestal base part is formed on the reactor building foundation mat, a horizontal vent part pedestal unit of the reactor pressure vessel support pedestal divided horizontally into two is installed on this base part, and a connecting hole part is installed on this pedestal unit. A method for installing a reactor pressure vessel support pedestal, the method comprising installing a pedestal unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2078656A JP2945707B2 (en) | 1990-03-29 | 1990-03-29 | Installation method of pedestal supporting reactor pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2078656A JP2945707B2 (en) | 1990-03-29 | 1990-03-29 | Installation method of pedestal supporting reactor pressure vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03279895A true JPH03279895A (en) | 1991-12-11 |
| JP2945707B2 JP2945707B2 (en) | 1999-09-06 |
Family
ID=13667906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2078656A Expired - Fee Related JP2945707B2 (en) | 1990-03-29 | 1990-03-29 | Installation method of pedestal supporting reactor pressure vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2945707B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1750284A2 (en) * | 2005-08-05 | 2007-02-07 | Framatome ANP GmbH | Cover element for the reactor core of a nuclear plant and nuclear reactor |
-
1990
- 1990-03-29 JP JP2078656A patent/JP2945707B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1750284A2 (en) * | 2005-08-05 | 2007-02-07 | Framatome ANP GmbH | Cover element for the reactor core of a nuclear plant and nuclear reactor |
| EP1750284A3 (en) * | 2005-08-05 | 2008-07-09 | AREVA NP GmbH | Cover element for the reactor core of a nuclear plant and nuclear reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2945707B2 (en) | 1999-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |