JPH0342396Y2 - - Google Patents
Info
- Publication number
- JPH0342396Y2 JPH0342396Y2 JP1985122700U JP12270085U JPH0342396Y2 JP H0342396 Y2 JPH0342396 Y2 JP H0342396Y2 JP 1985122700 U JP1985122700 U JP 1985122700U JP 12270085 U JP12270085 U JP 12270085U JP H0342396 Y2 JPH0342396 Y2 JP H0342396Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- mast
- mast tube
- annular
- sample water
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002915 spent fuel radioactive waste Substances 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 5
- 239000003758 nuclear fuel Substances 0.000 claims 2
- 239000000446 fuel Substances 0.000 description 17
- 230000004992 fission Effects 0.000 description 11
- 238000005253 cladding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 1
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005070 sampling 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
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は原子炉で使用された燃料集合体を移送
の際、使用済燃料ピツトクレーンのマストチユー
ブ内の水中の核分裂生成物を分析するマスト・シ
ツピングに関するものである。[Detailed description of the invention] [Industrial application field] This invention is a mast tube that analyzes nuclear fission products in the water in the mast tube of a spent fuel pit crane when transferring fuel assemblies used in a nuclear reactor. It concerns shipping.
原子炉で使用された使用済燃料集合体は、原子
炉格納容器に隣接した燃料取扱建屋へ移送され、
その中の使用済燃料ピツトに貯蔵される。燃料取
扱建屋内での移送は、使用済燃料ピツトクレーン
によるが、そのクレーンの構成の概要を第３図に
示す。第３図において、クレーン１は使用済燃料
ピツト２の相対する長辺の縁に敷設された２条の
平行なレール３の上を４個の車輪４により矢印Ａ
の方向に走行する。クレーンのデツキ５の上には
矢印Ａと直角の方向に２条の平行なレール６が敷
設され、その上をトロリー７が４個の車輪８で移
動する。トロリー７には、マストチユーブ９が取
付けられ、その中をグリツパ１０がウインチ１１
により昇降する。グリツパ１０は燃料集合体１２
をつかんでマストチユーブ９内に引入れ移送す
る。使用済燃料の被覆管に欠陥があれば、核分裂
生成物が漏出するので使用済燃料集合体１２はマ
ストチユーブ９に引き入れられて移送中にマスト
チユーブ９内の水のサンプルを採取し、それを分
析して核分裂生成物の有無を検査していた。容器
内に使用済燃料集合体を入れ、容器内の水を分析
して検査することをシツピング検査といい、上記
のように容器としてマストチユーブを利用するの
でマストシツピングという。
Spent fuel assemblies used in the reactor are transferred to the fuel handling building adjacent to the reactor containment vessel.
It is stored in a spent fuel pit within it. Transfer within the fuel handling building is carried out by a spent fuel pit crane, and the outline of the crane's configuration is shown in Figure 3. In FIG. 3, a crane 1 moves over two parallel rails 3 laid on opposite long edges of a spent fuel pit 2 using four wheels 4.
Drive in the direction of. Two parallel rails 6 are laid on the deck 5 of the crane in a direction perpendicular to arrow A, and a trolley 7 moves on the rails with four wheels 8. A mast tube 9 is attached to the trolley 7, and a gripper 10 is installed in the mast tube 9 through which a winch 11 is inserted.
It goes up and down. The gripper 10 is a fuel assembly 12
Grasp it and pull it into the mast tube 9 and transfer it. If there is a defect in the spent fuel cladding, fission products will leak out, so the spent fuel assembly 12 is drawn into the mast tube 9 and during the transfer, a sample of the water inside the mast tube 9 is collected and used. It was analyzed to check for the presence of fission products. The process of placing a spent fuel assembly in a container and analyzing and inspecting the water inside the container is called a shipping inspection, and as mentioned above, using a mast tube as a container is called mast shipping.
従来は第４図に示すようにマストチユーブ９の
１箇所（引き入れた燃料集合体１２の上部付近）
からパイプ１３及びクレーンデツキに設置された
ポンプ１４でマストチユーブ９内の水を吸上げて
サンプル採取容器１５に採取し分析していた。 Conventionally, as shown in Fig. 4, one location of the mast tube 9 (near the top of the drawn fuel assembly 12)
Water inside the mast tube 9 was sucked up from the mast tube 9 using a pipe 13 and a pump 14 installed on the crane deck, and the water was collected into a sample collection container 15 for analysis.
〔考案が解決しようとする問題点〕
従来のサンプル採取方法ではサンプル水をマス
トチユーブの１箇所のみから吸出しているが、燃
料集合体は長いので、燃料棒から漏出した核分裂
生成物が場所によつては吸出点に達するまで時間
がかかり、また漏出した核分裂生成物が吸出しに
くいこと等のため、サンプルの取り方が不確実で
その上取つたサンプル水中に漏出した核分裂生成
物が含まれるかどうかも不確実であるという欠点
があつた。[Problem that the invention aims to solve] In the conventional sampling method, the sample water is sucked out from only one place in the mast tube, but because the fuel assembly is long, the fission products leaking from the fuel rods can be distributed in different places. However, it takes a long time to reach the suction point, and it is difficult to suck out the leaked fission products, so it is uncertain how to take the sample, and it is not clear whether the sample water contains leaked fission products. It also had the disadvantage of being uncertain.
マストチユーブの内側に多数の空気吹出し穴を
有する環状管を取付ける。なお、吹出し穴からの
気泡の効果が燃料集合体の全長に行きわたるよう
に、複数個の環状管がマストチユーブに間隔をお
いて取付けられる。
Install an annular tube with multiple air outlet holes inside the mast tube. Note that a plurality of annular tubes are attached to the mast tube at intervals so that the effect of air bubbles from the blowout holes is spread over the entire length of the fuel assembly.
マストチユーブに取付けられた環状管の空気吹
出し穴からの気泡により、燃料棒の被覆管から漏
出した核分裂生成物（もしあれば）を水中に確実
に混合しつつ、上方への移動を促進し、速かにサ
ンプル水中に核分裂生成物を採り入れることがで
きる。また燃料集合体の表面に付着するクラツド
を除去する作用もある。
Air bubbles from the air outlet in the annular tube attached to the mast tube ensure that fission products (if any) leaking from the fuel rod cladding are mixed into the water while promoting their upward movement; Fission products can be quickly introduced into the sample water. It also has the effect of removing crud adhering to the surface of the fuel assembly.
本考案に基づくマスト・シツピング装置の構成
の概要を第１図、第２図に示す。第１図には第３
図の使用済燃料ピツトクレーンの一部すなわちマ
ストチユーブ９、グリツパ１０、ウインチ１１及
び燃料集合体１２のみを示す。
An outline of the configuration of a mast shipping device based on the present invention is shown in FIGS. 1 and 2. Figure 1 shows the 3rd
Only a portion of the spent fuel pit crane shown in the figure, namely the mast tube 9, gripper 10, winch 11 and fuel assembly 12, are shown.
第１図、第２図において、多数の空気吹出し穴
を有する複数個（図の例では５個）の環状管１６
がマストチユーブ９の内側に取付けられる。それ
らの環状管１６は使用済燃料ピツトクレーン上の
空気源１７へパイプ１８及び分岐管１９で連結さ
れ、空気吹出し穴から矢印のように気泡が吹き出
される。燃料集合体１２の燃料棒被覆管に欠陥が
あり、核分裂生成物が漏れておれば、それを気泡
により水中に確実に混合して上方へ速かに移動さ
せ、パイプ１３及びポンプ１４で水とともにマス
トチユーブ９から吸上げられ、サンプル水として
採取容器１５に採取される。 In FIGS. 1 and 2, a plurality of annular pipes 16 (five in the example shown) each having a large number of air blowing holes are shown.
is attached to the inside of the mast tube 9. These annular pipes 16 are connected to an air source 17 on the spent fuel pit crane by pipes 18 and branch pipes 19, and air bubbles are blown out from the air blowing holes as shown by the arrows. If there is a defect in the fuel rod cladding of the fuel assembly 12 and fission products are leaking, bubbles will ensure that they are mixed in the water and quickly moved upwards, and the pipes 13 and pump 14 will remove them together with the water. The water is sucked up from the mast tube 9 and collected into a collection container 15 as sample water.
マストチユーブに引入れられた燃料集合体の全
長に効果が及ぶように、多数の空気吹出し穴を有
する環状管がマストチユーブ内に複数個設けられ
ているので、燃料棒被覆管から該分裂生成物が漏
れておれば、空気吹出し穴からの気泡により核分
裂生成物を確実に水中に混合し、速かに上方へ移
動させるので信頼性のあるサンプル水の採取が可
能であり、迅速確実な検査を行うことができる。
Since a plurality of annular tubes having a large number of air blowing holes are provided in the mast tube so as to affect the entire length of the fuel assembly drawn into the mast tube, the fission products are removed from the fuel rod cladding tube. If there is a leak, bubbles from the air outlet will ensure that the fission products are mixed into the water and quickly moved upwards, allowing for reliable sample water collection and quick and reliable testing. It can be carried out.
また気泡により燃料集合体表面のクラツドを除
去することができるので、燃料集合体の清掃にも
役立つ。 Furthermore, since the bubbles can remove crud on the surface of the fuel assembly, it is also useful for cleaning the fuel assembly.
第１図は本考案のマスト・シツピングにおける
サンプル水の採取装置の実施例の概要図、第２図
は第１図の−断面図、第３図は使用済燃料ピ
ツトクレーンの構成を示す側面図、第４図は従来
のマスト・シツピングにおけるサンプル水の採取
装置の概要図である。
９……マストチユーブ、１３……パイプ、１４
……ポンプ、１５……サンプル採取容器、１６…
…環状管、１７……空気源、１８……パイプ、１
９……分岐管。
FIG. 1 is a schematic diagram of an embodiment of the sample water collection device for mast shipping of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is a side view showing the configuration of a spent fuel pit crane. FIG. 4 is a schematic diagram of a sample water collection device in conventional mast shipping. 9... Must tube, 13... Pipe, 14
...Pump, 15...Sample collection container, 16...
...Annular pipe, 17...Air source, 18...Pipe, 1
9... Branch pipe.
Claims (1)
ユーブが吊架されている使用済燃料ピツトクレー
ンを使用する核燃料移送装置において、多数の空
気吹出しノズルが円周方向に間隔をおいて形成さ
れた環状管を複数前記マストチユーブ内に長手方
向に間隔をおいて配設し、前記環状管を空気源に
連通せしめ、更に前記マストチユーブ内の上部に
サンプル水採取装置を開口、連通せしめ、前記空
気吹出しノズルが前記マストチユーブ内に引きこ
まれた核燃料集合体の全外周面にわたつて指向さ
れていることを特徴とするマスト・シツピングに
おけるサンプル水の採取装置。 In a nuclear fuel transfer device using a spent fuel pit crane in which a telescopic multi-stage telescoping mast tube is suspended from a trolley, a plurality of annular tubes each having a plurality of air blowing nozzles formed at intervals in the circumferential direction are used. The annular tube is disposed at intervals in the longitudinal direction within the mast tube, the annular tube is connected to an air source, and a sample water collection device is opened and communicated with an upper portion of the mast tube, and the air blowing nozzle is connected to the mast tube. A device for collecting sample water in mast shipping, characterized in that it is directed over the entire outer circumferential surface of a nuclear fuel assembly drawn into a tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985122700U JPH0342396Y2 (en) | 1985-08-12 | 1985-08-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985122700U JPH0342396Y2 (en) | 1985-08-12 | 1985-08-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6232394U JPS6232394U (en) | 1987-02-26 |
| JPH0342396Y2 true JPH0342396Y2 (en) | 1991-09-05 |
Family
ID=31013137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985122700U Expired JPH0342396Y2 (en) | 1985-08-12 | 1985-08-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0342396Y2 (en) |
-
1985
- 1985-08-12 JP JP1985122700U patent/JPH0342396Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6232394U (en) | 1987-02-26 |
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