JPH0527079A - Parallel arrangement inspection device for in-reactor fuel arrangement - Google Patents
Parallel arrangement inspection device for in-reactor fuel arrangementInfo
- Publication number
- JPH0527079A JPH0527079A JP3208487A JP20848791A JPH0527079A JP H0527079 A JPH0527079 A JP H0527079A JP 3208487 A JP3208487 A JP 3208487A JP 20848791 A JP20848791 A JP 20848791A JP H0527079 A JPH0527079 A JP H0527079A
- Authority
- JP
- Japan
- Prior art keywords
- underwater
- camera
- fuel
- arrangement
- assemblies
- 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
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
Description
【０００１】[0001]
【産業上の利用分野】本発明はプール内において原子炉
炉心や使用済燃料保管ラックにおける燃料集合体の集合
体番号の確認や内挿物の頭部検査を撮影画像により行う
炉内燃料配置の複列検査装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel arrangement in a reactor for confirming an assembly number of a fuel assembly in a reactor core or a spent fuel storage rack in a pool and inspecting a head of an insert by a photographed image. The present invention relates to a double-row inspection device.
【０００２】[0002]
【従来の技術】燃料集合体は炉心に装荷され、使用後は
使用済燃料集合体として保管ラックに収納されて専用プ
ールで保管されるが、このとき、集合体番号の確認や内
挿物の頭部検査が水中テレビカメラで行われる。そし
て、かかる検査は、水中照明を備えた水中テレビカメラ
を燃料交換機のマスト先端に固定すると共に、正方行列
に装荷されている多数の燃料集合体の上方を上記列に沿
って移動させながら集合体頭部を一体ずつ撮影すること
により行っている。2. Description of the Related Art A fuel assembly is loaded into a core, and after use, it is stored as a spent fuel assembly in a storage rack and stored in a dedicated pool. Head inspection is performed with an underwater television camera. Then, in such an inspection, an underwater television camera equipped with underwater lighting is fixed to the mast tip of the refueling machine, and a plurality of fuel assemblies loaded in a square matrix are moved above the fuel assembly along the above-mentioned row to form an assembly. This is done by photographing the heads one by one.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記従来の
燃料配置の検査装置においては、水中テレビカメラ１基
で、燃料集合体を１列ごとに撮影していたことから、こ
の配置検査に２日近くかかり、該検査時間が定期検査を
長びかせるという問題を有している。However, in the above-mentioned conventional fuel arrangement inspection apparatus, one underwater television camera was used to take an image of the fuel assembly row by row. It takes a short time and has a problem that the inspection time lengthens the periodic inspection.
【０００４】本発明は叙上の如き実状に対処し、水中テ
レビカメラ複数基を一体化構造とすることにより、上記
燃料集合体を複数列同時に撮影し、定期検査でのクリテ
ィカル工程であった検査時間を数分の１に短縮し、定期
検査の効率化を図ることを目的とする。The present invention copes with the above situation, and by integrating a plurality of underwater television cameras into an integrated structure, a plurality of rows of the above fuel assemblies are simultaneously photographed, and the inspection was a critical process in the regular inspection. The purpose is to shorten the time to a fraction and improve the efficiency of regular inspections.
【０００５】[0005]
【課題を解決するための手段】即ち、上記目的に適合す
る本発明炉内燃料配置の複列検査装置の特徴は、地上部
制御装置にケーブルを介して接続された水中テレビカメ
ラと、該テレビカメラの被写体を照射する水中照明とを
具備し、燃料交換機等によって水中を移動することによ
り、原子炉等に配置された燃料集合体の番号確認を順次
行う炉内燃料配置の検査装置において、上記水中テレビ
カメラを複数基、夫々のカメラで複数列の燃料集合体を
個々に撮影しうるよう並列に配置、一体化せしめたこと
にある。また、請求項２に記載の装置は、上記検査装置
において水中照明に均一な照度を与えたものであり、検
査装置の水中照明が、多数の小平面状反射体を、前記水
中テレビカメラのカメラ画角に適合する照射角度の半裁
球面状に連続的に並べ形成した反射板を備えたことを特
徴とする。なお、ここでいうカメラ画角とは、映像を適
正にとらえ得る水中テレビカメラのズーム度と視界の組
合せのことである。That is, the features of the in-core fuel arrangement double-row inspection device according to the present invention which meet the above-mentioned object are that an underwater television camera connected to a ground control device through a cable, and the television. In the in-reactor fuel arrangement inspection device, which is provided with underwater illumination for illuminating the subject of the camera, and which sequentially confirms the numbers of the fuel assemblies arranged in the reactor etc. by moving in water by a fuel exchanger, etc. The reason is that multiple underwater television cameras were arranged in parallel and integrated so that each camera could individually photograph multiple rows of fuel assemblies. The apparatus according to claim 2 is one in which the underwater illumination of the inspection apparatus is given uniform illuminance, and the underwater illumination of the inspection apparatus includes a large number of small plane reflectors in the camera of the underwater television camera. It is characterized in that it is provided with a reflector plate which is continuously arranged in a semi-cut spherical shape having an irradiation angle adapted to the angle of view. It should be noted that the camera angle of view referred to here is a combination of the zoom degree and the field of view of the underwater television camera that can properly capture an image.
【０００６】[0006]
【作用】上記構成を有する本発明の検査装置にあって
は、燃料集合体の配置検査に際し、複数の燃料集合体列
を同時に撮影しうることから、検査装置の移動距離が半
減あるいはそれ以下となり、もって燃料の配置検査時間
を従来に比し数分の１に短縮することが可能となる。ま
た、水中照射を上記のように構成することにより、該照
明に広い照射巾を確保して遠距離での均一な照射を可能
とし、もって、水中テレビカメラと燃料頭部との距離を
より遠隔化し、該水中テレビカメラの放射線による劣化
を少なくして長寿命化を図ることが可能である。In the inspection apparatus of the present invention having the above-mentioned structure, a plurality of fuel assembly rows can be photographed at the same time when inspecting the arrangement of the fuel assemblies, so that the moving distance of the inspection apparatus is reduced to half or less. Therefore, the fuel placement inspection time can be shortened to a fraction of that of the conventional case. Further, by configuring the underwater irradiation as described above, a wide irradiation width can be secured for the illumination and uniform irradiation can be performed at a long distance. Therefore, the distance between the underwater television camera and the fuel head can be more remote. It is possible to reduce the deterioration of the underwater television camera due to radiation and prolong the life of the underwater television camera.
【０００７】[0007]
【実施例】以下、更に添付図面を参照して本発明実施例
の炉内燃料配置の複列検査装置を説明する。図１は本発
明実施例の検査装置を示す正面図、図２は同装置のカメ
ラ部を主に見た側面図、図３は同装置の底面図、図４は
図１のＡ−Ａ線断面図、図５は図１のＢ−Ｂ線断面図で
あり、各図において同一部材は同一符号をもって記して
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A double-row inspection system for fuel arrangement in a reactor according to an embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a front view showing an inspection apparatus according to an embodiment of the present invention, FIG. 2 is a side view mainly looking at a camera section of the apparatus, FIG. 3 is a bottom view of the apparatus, and FIG. 4 is a line AA of FIG. 5 is a sectional view taken along the line BB of FIG. 1, and the same members are denoted by the same reference numerals in each drawing.
【０００８】この検査装置は、夫々のカメラで図７にし
めす如く２列の燃料集合体（Ｎ）を個々に撮影しうるよ
う並列に配置されると共に、カメラ保持金具（１）で取
り外し可能に一体化された２基の水中テレビカメラ
（２），（２）と、該水中テレビカメラ（２），（２）
に夫々１対ずつ、サポート（４），（４）によって角度
可変に取着された合計４基の水中照明（３）…（３）と
を備えている。この水中テレビカメラ（２），（２）
は、使用後はボルトを外すことにより、カメラ保持金具
（１）と別に保管することができる。This inspection apparatus is arranged in parallel so that the two rows of fuel assemblies (N) can be individually photographed by each camera as shown in FIG. 7, and can be detached by the camera holding metal fitting (1). Two integrated underwater television cameras (2), (2) and the underwater television cameras (2), (2)
In addition, a total of four underwater lights (3) ... (3) are attached to each pair by supports (4) and (4) in a variable angle. This underwater television camera (2), (2)
Can be stored separately from the camera holding metal fitting (1) by removing the bolt after use.
【０００９】一方、水中照明（３）は、図９に示す従来
の照明の改良を図ったものである。即ち、従来の照明の
反射板（５´）では距離が遠くなればなるほど被射体照
射巾（Ｌ´）がなくなり、均一な照射が得られないが、
本発明は図８に示す如く、水中照明（３）の反射板
（５）を、多数の小平面状反射体（６）…（６）を上記
水中テレビカメラ（２）のカメラ画角に適合する照射角
度の半裁球面状に連続的に並べることによりモザイク状
に形成したことから、光源（７）からの光を効率よく反
射して遠距離での被写体照射巾（Ｌ）と、広い被写体照
射範囲（Ｍ）を確保している。この本発明モザイク状反
射板（５）を用いることにより、検査装置と燃料頭部と
の距離を、従来１００mm程度であったものを１５００〜
２４００mmに遠隔化し、検査装置の放射線による劣化を
防止して長寿命化を図ることができる。On the other hand, the underwater illumination (3) is an improvement of the conventional illumination shown in FIG. That is, in the conventional reflection plate (5 ′) for illumination, the irradiation width (L ′) of the object is reduced as the distance becomes longer, and uniform irradiation cannot be obtained.
According to the present invention, as shown in FIG. 8, a reflector (5) for underwater illumination (3) and a large number of small plane reflectors (6) ... (6) are adapted to the camera angle of view of the underwater television camera (2). Since it is formed in a mosaic shape by continuously arranging it in a semi-spherical spherical shape with the irradiation angle to be obtained, the light from the light source (7) is efficiently reflected and the object irradiation width (L) at a long distance and the wide object irradiation are obtained. The range (M) is secured. By using the mosaic reflection plate (5) of the present invention, the distance between the inspection device and the fuel head is about 100 mm from the conventional distance of about 100 mm.
It can be remoted to 2400 mm, and the deterioration of the inspection device due to radiation can be prevented to extend the service life.
【００１０】また、実際の使用に当たっては、光源
（７）となる照射ランプには、ハロゲンランプのフイラ
メントを強化したものを用い、さらにソケットも耐放射
性の高いものを使用することが望ましい。なお、上述し
た被写体照射範囲（Ｍ）とは、仕様で決定された距離で
の測定に応じて、カメラ画角とマッチした均一な照射が
可能な範囲であり、また被写体照射巾（Ｌ）とは被写体
が均一に照射される巾を意味するものである。In actual use, it is desirable that the irradiation lamp serving as the light source (7) is a halogen lamp having a reinforced filament, and the socket also has a high radiation resistance. The above-mentioned subject irradiation range (M) is a range in which uniform irradiation matching the camera angle of view is possible according to the measurement at the distance determined by the specification, and the subject irradiation width (L) Means the width over which the subject is uniformly illuminated.
【００１１】また、水中照明（３）…（３）の電源コー
ド（３ａ）…（３ａ）は、図１に示すように、各カメラ
単位でカメラケーブル（２ａ），（２ａ）にコネクタ
（３ｂ）…（３ｂ）によって集合されている。一方、上
記カメラケーブル（２ａ），（２ａ）は下部でコネクタ
（２ｂ），（２ｂ）によって各水中テレビカメラ
（２），（２）と着脱自在に接続されると共に、図５に
も示す如く中間部においてケーブル金具（２ｃ）により
一体化され、さらに、その上部は図６に示す如き燃料交
換機（Ｋ）内の制御装置（Ｓ）に接続されている。しか
して、このカメラケーブル（２ａ），（２ａ）は、検査
装置の使用後は、コネクタ（２ｂ），（２ｂ）で水中テ
レビカメラ（２），（２）から取外し、上記ケーブル金
具（２ｃ）の固定を解くことにより単体で保管すること
ができる。これによって、従来ブッシング方法によって
一体構造となっていた検査装置を軽量化することがで
き、天井クレーン等を使用せず手運びが可能となり、そ
の保管も、図６右半に示すように使用済燃料プール
（Ｐ）等で行うことができる。Further, as shown in FIG. 1, the power cords (3a) ... (3a) of the underwater lights (3) ... (3) are connected to the camera cables (2a) and (2a) for each camera as shown in FIG. ) ... (3b). On the other hand, the camera cables (2a) and (2a) are detachably connected to the underwater television cameras (2) and (2) by connectors (2b) and (2b) at the bottom, as shown in FIG. It is integrated by a cable fitting (2c) in the middle part, and the upper part is connected to the control device (S) in the fuel exchanger (K) as shown in FIG. Then, these camera cables (2a) and (2a) are detached from the underwater television cameras (2) and (2) by the connectors (2b) and (2b) after the use of the inspection device, and the cable fittings (2c) are removed. It can be stored as a single unit by unfixing it. As a result, it is possible to reduce the weight of the inspection device, which was conventionally integrated by the bushing method, and to carry it without using an overhead crane, etc., and store it as shown in the right half of FIG. It can be performed in the fuel pool (P) or the like.
【００１２】次に、上記構成を有する本発明実施例の検
査装置の使用方法を説明する。上記検査装置は、図１に
示すようにカメラ保持金具（１）上部に、燃料交換機
（Ｋ）のマスト（８）先端のマストグラップル（図示せ
ず）の掴み構造に合った吊環部（９）が設けられてお
り、この吊環部（９）を図６に示すように燃料交換機
（Ｋ）で燃料集合体（Ｎ）と同じように吊り下げて、図
７に示すように燃料集合体（Ｎ）の上方からその列に沿
って移動しながら集合体個々の番号を順次撮影する。こ
の場合、本発明検査装置にあっては、図７の矢印に示す
如く２列の集合体（Ｎ），（Ｎ）を個々の水中テレビカ
メラ（２），（２）で同時に撮影しうることから該検査
装置の移動距離の移動距離が半減し、燃料集合体の配置
検査時間を従来の半分に短縮することができる。Next, a method of using the inspection apparatus of the embodiment of the present invention having the above structure will be described. As shown in FIG. 1, the above-mentioned inspection device has a suspension ring part (9) on the upper part of the camera holding metal fitting (1) that fits the grip structure of the mast grapple (not shown) at the tip of the mast (8) of the fuel exchanger (K). The suspension ring portion (9) is hung by the fuel exchanger (K) in the same manner as the fuel assembly (N) as shown in FIG. 6, and the fuel assembly (N) is provided as shown in FIG. ), While moving along the row, the individual numbers of each aggregate are sequentially photographed. In this case, in the inspection apparatus of the present invention, it is possible to simultaneously image the two rows of aggregates (N), (N) by the individual underwater television cameras (2), (2) as shown by the arrow in FIG. Therefore, the moving distance of the moving distance of the inspection device is halved, and the fuel assembly arrangement inspection time can be shortened to half of the conventional time.
【００１３】また、水中照明（３）…（３）を上記のよ
うに構成したことにより、該照明に広い照射巾を確保し
て遠距離での均一な照射を可能とし、もって水中テレビ
カメラ（２），（２）と燃料頭部との距離を前記した如
く遠隔化し、該カメラ（２），（２）の放射線による劣
化を防いで長寿命化を図ることが可能である。Further, since the underwater lighting (3) ... (3) is configured as described above, a wide irradiation width is secured for the lighting and uniform irradiation can be performed at a long distance. It is possible to extend the life of the cameras (2) and (2) by preventing the deterioration of the cameras (2) and (2) due to radiation by making the distances between 2) and (2) and the fuel head remote as described above.
【００１４】以上、本発明の燃料配置の検査装置につい
て説明したが、水中テレビカメラは３基あるいはそれ以
上設けることも可能である。Although the fuel arrangement inspection apparatus of the present invention has been described above, three or more underwater television cameras can be provided.
【００１５】[0015]
【発明の効果】以上説明したように、本発明の炉内燃料
の複列検査装置は、水中テレビカメラを複数基、夫々の
テレビカメラで炉内複数列の燃料集合体を個々に撮影し
うるよう並列に配置、一体化せしめたものであり、検査
に際し複数の燃料集合体列を同時に撮影しうることか
ら、検査装置の移動距離を減らし、検査時間を従来の数
分の１に短縮して原子炉定期検査の効率化に寄与すると
の顕著な効果を奏し、また、水中照明を請求項２記載の
ように構成することにより、該照明に広い照射巾を確保
して遠距離での均一な照射を可能ならしめ、もって水中
テレビカメラと燃料頭部との距離をより遠隔化し、該テ
レビカメラの放射線による劣化を少なくして長寿命化を
図れるとの実効も奏するものである。As described above, the in-reactor fuel double-row inspection apparatus according to the present invention has a plurality of underwater television cameras, and each of the television cameras can individually image a plurality of rows of fuel assemblies in the reactor. Since they are arranged in parallel and integrated, and multiple fuel assembly rows can be imaged at the same time during inspection, the moving distance of the inspection device is reduced and the inspection time is shortened to a fraction of the conventional one. It has a remarkable effect that it contributes to the efficiency of the periodical inspection of the nuclear reactor, and the underwater lighting is configured as described in claim 2, so that a wide irradiation width is secured for the lighting and uniform at a long distance. Irradiation is made possible, and thus the distance between the underwater television camera and the fuel head is made remoter, and the deterioration of the television camera due to radiation can be reduced to prolong the service life.
【図１】本発明実施例の検査装置の正面図である。FIG. 1 is a front view of an inspection apparatus according to an embodiment of the present invention.
【図２】同装置のカメラ部を主に見た側面図である。FIG. 2 is a side view mainly showing a camera unit of the same apparatus.
【図３】同装置の底面図である。FIG. 3 is a bottom view of the device.
【図４】図１のＡ−Ａ線断面図である。FIG. 4 is a cross-sectional view taken along the line AA of FIG.
【図５】図１のＢ−Ｂ線断面図である。5 is a cross-sectional view taken along the line BB of FIG.
【図６】実施例装置の使用状態を示す説明図である。FIG. 6 is an explanatory diagram showing a usage state of the embodiment apparatus.
【図７】炉心の平面図である。FIG. 7 is a plan view of a core.
【図８】実施例装置の水中照明の反射板を示す説明図で
ある。FIG. 8 is an explanatory diagram showing a reflector of the underwater illumination of the embodiment apparatus.
【図９】従来の水中照明の反射板を示す説明図である。FIG. 9 is an explanatory diagram showing a conventional reflector for underwater illumination.
（１） カメラ保持金具 （２） 水中テレビカメラ （３） 水中照明 （４） サポート （５） 反射板 （６） 小平面状反射体 （７） 光源 （８） マスト （９） 吊環部 (1) Camera holding bracket (2) Underwater TV camera (3) Underwater lighting (4) Support (5) Reflector (6) Small planar reflector (7) Light source (8) Mast (9) Hanging ring
Claims (2)
された水中テレビカメラと、該テレビカメラの被写体を
照射する水中照明とを具備し、燃料交換機等によって水
中を移動することにより、原子炉等に配置された燃料集
合体の番号確認を順次行う炉内燃料配置の検査装置にお
いて、上記水中テレビカメラを複数基、夫々のカメラで
複数列の燃料集合体を個々に撮影しうるよう並列に配
置、一体化せしめたことを特徴とする炉内燃料配置の複
列検査装置。1. A nuclear reactor comprising an underwater television camera connected to a ground control device via a cable, and an underwater illumination for illuminating an object of the television camera, and moving in water by a refueling machine or the like. In the in-reactor fuel arrangement inspection device for sequentially confirming the numbers of the fuel assemblies arranged in the same manner, a plurality of the above-mentioned underwater television cameras are arranged in parallel so that each camera can individually photograph a plurality of rows of fuel assemblies. A double-row inspection device for in-reactor fuel arrangement, which is characterized by the arrangement and integration.
状反射体を上記水中テレビカメラのカメラ画角に適合す
る照射角度の半裁球面状に連続的に並べることにより形
成したことを特徴とする請求項１記載の炉内燃料配置の
複列検査装置。2. The underwater illumination reflector is formed by arranging a large number of small plane reflectors continuously in a semi-spherical surface having an irradiation angle adapted to the camera view angle of the underwater television camera. The double-row inspection device for in-core fuel arrangement according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3208487A JP2547680B2 (en) | 1991-07-24 | 1991-07-24 | Double-row inspection system for fuel arrangement in reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3208487A JP2547680B2 (en) | 1991-07-24 | 1991-07-24 | Double-row inspection system for fuel arrangement in reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0527079A true JPH0527079A (en) | 1993-02-05 |
| JP2547680B2 JP2547680B2 (en) | 1996-10-23 |
Family
ID=16556981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3208487A Expired - Lifetime JP2547680B2 (en) | 1991-07-24 | 1991-07-24 | Double-row inspection system for fuel arrangement in reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2547680B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098602A (en) * | 2012-11-14 | 2014-05-29 | Hitachi Power Solutions Co Ltd | Underwater observation device, underwater observation method and radioactivity measurement method of fuel assembly using underwater observation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5998401U (en) * | 1982-12-23 | 1984-07-03 | 三菱電線工業株式会社 | sheet fiberscope |
| JPS63191998A (en) * | 1987-02-05 | 1988-08-09 | 株式会社東芝 | Television camera device for confirming core |
| JPS63225192A (en) * | 1987-03-14 | 1988-09-20 | 原子燃料工業株式会社 | Fuel-aggregate incore arrangement inspection device |
| JPH0238995A (en) * | 1988-07-29 | 1990-02-08 | Toshiba Corp | In-furnace visual inspection device |
| JPH02134595A (en) * | 1988-11-16 | 1990-05-23 | Toshiba Corp | Fuel inspection device |
| JPH0365695A (en) * | 1989-08-02 | 1991-03-20 | Nuclear Fuel Ind Ltd | Optical fiber scope for inspection of nuclear fuel assembly |
| JPH04323599A (en) * | 1991-04-22 | 1992-11-12 | Nuclear Fuel Ind Ltd | Method for high speed inspecting layout of fuel assembly inside reactor |
-
1991
- 1991-07-24 JP JP3208487A patent/JP2547680B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5998401U (en) * | 1982-12-23 | 1984-07-03 | 三菱電線工業株式会社 | sheet fiberscope |
| JPS63191998A (en) * | 1987-02-05 | 1988-08-09 | 株式会社東芝 | Television camera device for confirming core |
| JPS63225192A (en) * | 1987-03-14 | 1988-09-20 | 原子燃料工業株式会社 | Fuel-aggregate incore arrangement inspection device |
| JPH0238995A (en) * | 1988-07-29 | 1990-02-08 | Toshiba Corp | In-furnace visual inspection device |
| JPH02134595A (en) * | 1988-11-16 | 1990-05-23 | Toshiba Corp | Fuel inspection device |
| JPH0365695A (en) * | 1989-08-02 | 1991-03-20 | Nuclear Fuel Ind Ltd | Optical fiber scope for inspection of nuclear fuel assembly |
| JPH04323599A (en) * | 1991-04-22 | 1992-11-12 | Nuclear Fuel Ind Ltd | Method for high speed inspecting layout of fuel assembly inside reactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098602A (en) * | 2012-11-14 | 2014-05-29 | Hitachi Power Solutions Co Ltd | Underwater observation device, underwater observation method and radioactivity measurement method of fuel assembly using underwater observation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2547680B2 (en) | 1996-10-23 |
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