JPS61116687A - Inspection device for fuel aggregate - Google Patents

Inspection device for fuel aggregate

Info

Publication number
JPS61116687A
JPS61116687A JP59236675A JP23667584A JPS61116687A JP S61116687 A JPS61116687 A JP S61116687A JP 59236675 A JP59236675 A JP 59236675A JP 23667584 A JP23667584 A JP 23667584A JP S61116687 A JPS61116687 A JP S61116687A
Authority
JP
Japan
Prior art keywords
shipping
fuel assembly
fuel
inspection
turntable
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
Application number
JP59236675A
Other languages
Japanese (ja)
Inventor
薫 喜多
岡藤　利美
大西　祥作
吉田　和豊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Seiryo Engineering Co Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Seiryo Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd, Seiryo Engineering Co Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP59236675A priority Critical patent/JPS61116687A/en
Publication of JPS61116687A publication Critical patent/JPS61116687A/en
Pending legal-status Critical Current

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

  • 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、原子力発電プラントの定期検査の際、原子炉
から取出された使用済燃料集合体のシツピング検査及び
外観検査を行う検査装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an inspection device that performs shipping inspection and visual inspection of spent fuel assemblies taken out from nuclear reactors during periodic inspections of nuclear power plants.

従来の技術 第４図は従来のシツピングキャンの構造の概要を示し、
燃料集合体１はシツピングキャン２に収納された後、シ
ツピングキャン゛２にシツピングキャップ３が冠装され
、シツピングキャン２の下部に接続されたガス入口管４
を介して窒素ガスがシツピングキャン２に送入される。Conventional technology Figure 4 shows an outline of the structure of a conventional shipping can.
After the fuel assembly 1 is stored in the shipping can 2, a shipping cap 3 is mounted on the shipping can 2, and a gas inlet pipe 4 is connected to the lower part of the shipping can 2.
Nitrogen gas is fed into the shipping can 2 via the.

窒素ガスは燃料集合体１に接触しながら上昇し、シツピ
ングキャップ３の頂部のガス出口管５よシ出て、その中
に同伴する核分裂生成ガスを分析することによって燃料
棒の健全性が検査される。The nitrogen gas rises while contacting the fuel assembly 1 and exits through the gas outlet pipe 5 at the top of the shipping cap 3, and the integrity of the fuel rod is tested by analyzing the fission product gas entrained therein. be done.

第５図は従来の燃料外観検査台の概要を示し、シツピン
グキャン２から取出された燃料集合体１は回転台６上に
載架される。回転台６の外周には適宜駆動源によって駆
動される回転軸７に固着された歯車８に噛合する歯車が
配設され前記回転軸７を駆動することによって回転台６
がその上に載架された燃料集合体１とともに回転される
。従ってテレビカメラ９を上下させることによって、燃
料集合体１の４面の外観が全長に亘って検査される。FIG. 5 shows an outline of a conventional fuel visual inspection table, in which the fuel assembly 1 taken out from the shipping can 2 is mounted on a rotary table 6. As shown in FIG. A gear is disposed on the outer periphery of the rotary table 6 and meshes with a gear 8 fixed to a rotary shaft 7 driven by an appropriate drive source.By driving the rotary shaft 7, the rotary table 6
is rotated together with the fuel assembly 1 mounted thereon. Therefore, by moving the television camera 9 up and down, the appearance of the four sides of the fuel assembly 1 can be inspected over its entire length.

発明が解決しようとする問題点 前述のように従来の燃料集合体検査装置ではシツピング
検査の後、外観検査のために燃料集合体を移動させる必
要があシ、作業時間がそれだけ長くなるとともに、燃料
集合体の出入れ、移送等作業が非常に繁雑でピットクレ
ーンの稼動率が悪く、また設備の設置スペースが可成シ
大きくなるという欠点があった。Problems to be Solved by the Invention As mentioned above, in the conventional fuel assembly inspection apparatus, it is necessary to move the fuel assembly for visual inspection after the shipping inspection, which increases the working time and increases the This method has disadvantages in that work such as loading and unloading and transporting the aggregates is very complicated, the operating rate of the pit crane is poor, and the installation space for the equipment is considerably large.

問題点を解決するための手段 ターンテーブルに取付けられた回転台に燃料集合体を載
架し、ターンテーブルを一定角度回転した位置で昇降式
シツピングキャンを下降させ燃料集合体１にかぶせてシ
ツピング検査ヲ行いシツピングキャンを上昇させた後タ
ーンテーブルｔ−一定角度回転した位置で、燃料集合体
用回転台を回転させて外観検査を行い更に一定角度回転
した位置でピットクレーンによ多燃料集合体を搬出する
ようにした。Means for solving the problem: The fuel assembly is mounted on a rotating table attached to a turntable, and when the turntable is rotated by a certain angle, an elevating shipping can is lowered to cover the fuel assembly 1 and shipped. After carrying out an inspection and raising the shipping can, the fuel assembly rotary table is rotated at a position where the turntable t has been rotated by a certain angle, an appearance inspection is performed, and the fuel assembly is assembled into a pit crane at a position where the fuel assembly is rotated at a certain angle. The body was moved out.

作用 原子力発電プラントの定期検査の際、原子炉から取出さ
れた使用済燃料集合体を同一の検査場所で連続して、シ
ツピング検査と外観検査を行うことができる。During periodic inspections of operational nuclear power plants, spent fuel assemblies taken out from nuclear reactors can be successively subjected to shipping inspections and visual inspections at the same inspection location.

実施例 第１図及び第２図において、燃料検査ピットの底面１３
に固着された旋回装置１２にターンテーブル１１が取付
けられる。ターンテーブル１１の下面には旋回装置１０
が固着され、上面には旋回装置１０で回転される回転台
６が取付けられる。ピットクレーン（図示せず）で移送
されてきた燃料集合体１は第２図のＡの位置で回転台６
に載架され、ターンテーブル１１が９０°回されてＢの
位置で昇降式シツピングキャン２が下降してきて燃料集
合体１にかぶせられる。シツピングキャン２には可動式
蓋３が封装されてもよい、窒素ガスがガス入口管４から
７ツピングキヤン２に送入されると、燃料集合体１に接
触しながら上昇し蓋３に固着されたガス出口管５から出
て、それに接続する分析装置（図示せず）で同伴した核
分裂生成ガスが分析されてシツピング検査が行われる。Embodiment In FIGS. 1 and 2, the bottom surface 13 of the fuel inspection pit
The turntable 11 is attached to a rotating device 12 fixed to the rotary device 12 . A rotating device 10 is provided on the underside of the turntable 11.
is fixed, and a rotating table 6 rotated by a rotating device 10 is attached to the upper surface. The fuel assembly 1, which has been transferred by a pit crane (not shown), is placed on the rotary table 6 at the position A in Fig. 2.
The turntable 11 is rotated 90 degrees, and the elevating shipping can 2 is lowered at position B and placed over the fuel assembly 1. A movable lid 3 may be sealed in the shipping can 2. When nitrogen gas is fed into the shipping can 2 from the gas inlet pipe 4, it rises while contacting the fuel assembly 1 and is fixed to the lid 3. The entrained fission product gas exits from the gas outlet pipe 5 and is analyzed by an analyzer (not shown) connected thereto to perform a shipping inspection.

シツピング検査が終れば可動式蓋３が取除かれ、シツピ
ングキャン２が上昇されて燃料集合体１が露出する。タ
ーンテーブル１１が９０’　回されて燃料集合体ＩＦｉ
Ｃの位置に達し、回転台６が９０°づつ３回回転され、
近接して設けられたテレビカメラ９を上下動させること
によ多燃料集合体１の４面の外観が全長に亘り検査され
る。外観検査が終れば夕〜ンテーブル１１を９０°回わ
しＤの位置で燃料集合体１をピットクレーンで微小する
。ターンテーブル１１を９００回してＡの位置に戻しっ
ぎの燃料集合体１を回転台６に載架し、前記と同じ操作
を繰シ返す。When the shipping inspection is completed, the movable lid 3 is removed and the shipping can 2 is raised to expose the fuel assembly 1. The turntable 11 is turned 90' and the fuel assembly IFi
When the position C is reached, the rotary table 6 is rotated three times by 90 degrees,
By moving a television camera 9 placed close up and down, the appearance of the four sides of the fuel-rich assembly 1 can be inspected over its entire length. After the visual inspection is completed, the evening table 11 is turned 90 degrees and the fuel assembly 1 is moved to position D using a pit crane. Turn the turntable 11 900 times, return it to position A, place the new fuel assembly 1 on the turntable 6, and repeat the same operation as above.

第３図において、回転台６の上面には位置決めピン（黒
丸で示す）１４とガイド兼支持ピン（白丸で示す）１５
が固着されていて、燃料集合体ＩＫはそれらのピンに合
う穴が設けられているので、前記のピンと穴を合わすこ
とにより燃料集合体１を回転台６！／Ｃ載架することが
できる。回転台６はＣの位置で９０°づつ３回回転する
のでＤの位置で燃料集合体搬出後９０°回わしてＡの位
置へ戻ったときピンの位置が元通シになるようにしてお
けば、常に決まった向きで燃料集合体１を回転台６に載
架することができる。In FIG. 3, a positioning pin (indicated by a black circle) 14 and a guide/support pin (indicated by a white circle) 15 are provided on the top surface of the rotary table 6.
are fixed, and the fuel assembly IK is provided with holes that fit these pins, so by aligning the pins and holes, the fuel assembly 1 can be moved to the rotary table 6! /C can be mounted on a shelf. The rotary table 6 rotates 90 degrees three times at position C, so after unloading the fuel assembly at position D, turn it 90 degrees and return to position A so that the pin position is the same as before. For example, the fuel assembly 1 can always be mounted on the rotary table 6 in a fixed orientation.

なおターンテーブルＨに回転台６を９０°間隔で４台設
置しておけば、燃料集合体の搬入載架シツピング検査、
外観検査、及び搬出を連続的に行うことができる。Furthermore, if four rotary tables 6 are installed on the turntable H at 90° intervals, it is possible to inspect the loading and unloading racks for fuel assemblies,
Visual inspection and unloading can be performed continuously.

発明の効果 燃料集合体の検査受台への出入れ及び移送作業が少なく
なシ、作業が簡略化され、作業時間が短縮されるととも
に、これに付随して燃料取扱いの安全性が向上し、作業
員の被曝減少とピットクレーンの稼動率の向上が図られ
る。Effects of the invention: The work of loading and unloading the fuel assembly into and out of the inspection pedestal and transferring it is reduced, the work is simplified, the work time is shortened, and the safety of fuel handling is improved accordingly. This will reduce the radiation exposure of workers and improve the operating rate of pit cranes.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明による燃料集合体検査装置の略図的立面
図、第２図は第１図の略図的平面図、第３図は燃料集合
体用回転台の位置決めピンを示す第２図と同様な図面、
第４図は従来装置におけるシツピング検査時の概略立面
図、第５図は従来装置における外観検査時の概略立面図
を示す。 １・・・燃料集合体、２・・・シツピングキャン、６・
・・燃料集合体用回転台、９・・・テレビカメラ、１１
・・・ターンテーブル 復代理人　弁理士　岡　本　重　文　外３名１−Ｊ’！
、Ｉ！ｌ集合体 ２−　ソツごツク１ヤン ６−燃料集合体用回転台 ９−テレビカメラ ｎ−一一ターンテーアル 第２図 第３図 ；１頁の続き ）発　明　者　　吉　１）　　和　豊　　神戸市兵庫区
和田宮通ング株式会社内FIG. 1 is a schematic elevation view of a fuel assembly inspection device according to the present invention, FIG. 2 is a schematic plan view of FIG. 1, and FIG. 3 is a second diagram showing positioning pins of a rotary table for fuel assemblies. drawings similar to,
FIG. 4 is a schematic elevational view of the conventional apparatus during a shipping inspection, and FIG. 5 is a schematic elevational view of the conventional apparatus during an external appearance inspection. 1...Fuel assembly, 2...Shipping can, 6.
...Fuel assembly rotating table, 9...TV camera, 11
... Turntable sub-agent Patent attorney Shigefumi Okamoto and 3 others 1-J'!
,I! l assembly 2 - Sotsugotsuk 1 Yang 6 - Turntable for fuel assembly 9 - Television camera n - 11 Turntail Fig. 2 Fig. 3; continued from page 1) Inventor Yoshi 1) Yutaka Kazu Hyogo, Kobe City Inside Wadamiya Street Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 燃料検査ピットの底面上にターンテーブルを載設し、前
記ターンテーブル上に所定の円周間隔をおいて燃料集合
体用回転台を配設し、シッピングキャンを有するシッピ
ング検査装置及びテレビカメラを有する外観検査装置を
それぞれ前記旋回テーブルに近接して垂直方向に移動自
在に設けたことを特徴とする燃料集合体検査装置。A turntable is mounted on the bottom surface of the fuel inspection pit, a rotary table for fuel assemblies is arranged on the turntable at a predetermined circumferential interval, and a shipping inspection device having a shipping can and a television camera are provided. A fuel assembly inspection device characterized in that visual inspection devices are provided in close proximity to the revolving table so as to be movable in the vertical direction.
JP59236675A 1984-11-12 1984-11-12 Inspection device for fuel aggregate Pending JPS61116687A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59236675A JPS61116687A (en) 1984-11-12 1984-11-12 Inspection device for fuel aggregate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59236675A JPS61116687A (en) 1984-11-12 1984-11-12 Inspection device for fuel aggregate

Publications (1)

Publication Number Publication Date
JPS61116687A true JPS61116687A (en) 1986-06-04

Family

ID=17004114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59236675A Pending JPS61116687A (en) 1984-11-12 1984-11-12 Inspection device for fuel aggregate

Country Status (1)

Country Link
JP (1) JPS61116687A (en)

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