JPS5816720B2 - Neutron source holder replacement device - Google Patents
Neutron source holder replacement deviceInfo
- Publication number
- JPS5816720B2 JPS5816720B2 JP53048466A JP4846678A JPS5816720B2 JP S5816720 B2 JPS5816720 B2 JP S5816720B2 JP 53048466 A JP53048466 A JP 53048466A JP 4846678 A JP4846678 A JP 4846678A JP S5816720 B2 JPS5816720 B2 JP S5816720B2
- Authority
- JP
- Japan
- Prior art keywords
- neutron source
- source holder
- replacement device
- holder
- antimony
- 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
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
- Analysing Materials By The Use Of Radiation (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
【発明の詳細な説明】 本発明は中性子源ホルダの取替装置に関する。[Detailed description of the invention] The present invention relates to a neutron source holder replacement device.
一般に原子炉を起動させるためには、起動用中性子源を
燃料間に挿設する必要がある。Generally, in order to start a nuclear reactor, it is necessary to insert a starting neutron source between the fuels.
この中性子源は、γ線源としてのアンチモンソース２本
と、このアンチモンソースを燃料間に保持するための中
性子源ホルダとから構成されている。This neutron source is composed of two antimony sources as gamma ray sources and a neutron source holder for holding the antimony sources between fuels.
そして、この中性子源ホルダにはアンチモンソースを挿
入する空胴が長手方向の略中央位置まで設けられ、アン
チモンソースは、中性子源ホルダの上部から装荷され、
上下に連続して保持されるように構成されている。A cavity into which an antimony source is inserted is provided in this neutron source holder up to approximately the center position in the longitudinal direction, and the antimony source is loaded from the top of the neutron source holder.
It is configured to be held continuously from top to bottom.
このような構成の中性子源ホルダは、炉心内冷却材（軽
水）の流れにより発生する流体振動によって消耗および
疲労が著しく、ために早期交換（３ないし４年以内）が
必要とされている。A neutron source holder with such a configuration is subject to significant wear and fatigue due to fluid vibrations generated by the flow of coolant (light water) in the core, and therefore requires early replacement (within 3 to 4 years).
ところで、中性子源ホルダを交換するためには、その構
造上倒置してアンチモンソースを取出す必要がある。By the way, in order to replace the neutron source holder, it is necessary to invert the neutron source holder and take out the antimony source due to its structure.
しかし、中性子源ホルダは肉厚が薄いため強度的に弱く
、また超高放射線量であるため水中で取扱わなければな
らず、交換作業は極めて困難である。However, since the neutron source holder is thin, its strength is weak, and the radiation dose is extremely high, so it must be handled underwater, making replacement work extremely difficult.
また、万−誤ってアンチモンソースを燃料プール底に落
下させた場合には、その回収は不可能に近く、さらに無
造作に中性子源ホルダを取扱うと、内挿されたアンチモ
ンソースもろとも折れ曲りたり外被に亀裂を生じ、Ｂｅ
、Ｓｂ等の放射性物質を燃料プール内に拡散させるおそ
れもある。In addition, if the antimony source is accidentally dropped to the bottom of the fuel pool, it is almost impossible to recover it, and if the neutron source holder is handled carelessly, the inserted antimony source may be bent or removed. Cracks occur in the coating, and Be
, Sb, and other radioactive substances may be diffused into the fuel pool.
本発明はかかる現況に鑑み創案されたもので、その目的
は、極めて困難な水中での中性子源ホルダ交換作業を、
安全力）つ確実にしかも少人数短時間で行なうことがで
きる信頼性の高い中性子源ホルダの取替装置を提供する
にある。The present invention was devised in view of the current situation, and its purpose is to eliminate the extremely difficult underwater neutron source holder replacement work.
To provide a highly reliable neutron source holder replacement device that can be carried out reliably (safely) and in a short time with a small number of people.
以下本発明の一実施例を図面に基づいて説明する。An embodiment of the present invention will be described below based on the drawings.
第１図は本発明に係る起動用中性子源Ｎ、Ｓ、を示すも
ので、この中性子源Ｎ、Ｓ、は第１図ａに示す中性子源
ホルダ１と同図すに示すアンチモンソース２とから構成
されている。FIG. 1 shows a starting neutron source N, S according to the present invention, which is composed of a neutron source holder 1 shown in FIG. 1a and an antimony source 2 shown in FIG. It is configured.
中性子源ホルダ１には、その上端部から長手方向の略中
央位置まで、アンチモンソース２を上下方向に２本収納
するための空胴３が設けられており、この中性子源ホル
ダ１の上端部には鍔４が、また下端部には鉢部５がそれ
ぞれ設けられている。The neutron source holder 1 is provided with a cavity 3 for accommodating two antimony sources 2 in the vertical direction from its upper end to approximately the center position in the longitudinal direction. A collar 4 is provided at the bottom end, and a pot portion 5 is provided at the lower end.
このように構成された中性子源ホルダ１は、第２図ない
し第６図に示す中性子源ホルダ取替装置によって把持さ
れて、その取替作業が行なわれる。The neutron source holder 1 configured in this way is held by a neutron source holder replacement device shown in FIGS. 2 to 6, and replacement work is performed thereon.
上記中性子源ホルダ取替装置は、バイブロ、アームホル
ダ７およびアーム８等から構成される装る。The above-mentioned neutron source holder replacement device is equipped with a vibro, an arm holder 7, an arm 8, and the like.
バイブロは、中性子源ホルダ１をその鍔４側から挿嵌し
た際に、鉢部５が引掛って抜は出ないような口径に形成
され、バイブロの中性子源ホルダ１挿入側端部の外周所
要位置にはロープ９が結び付けられたフック１０が設け
られ、またバイブロの反対側の端部には、バイブロを介
してその両側に対向する溝状に形成されたアームホルダ
７が固着されている。The vibro is formed with a diameter such that when the neutron source holder 1 is inserted from the collar 4 side, the pot portion 5 is caught and cannot be pulled out, and the outer circumference of the insertion side end of the neutron source holder 1 of the vibro is A hook 10 to which a rope 9 is tied is provided at the position, and an arm holder 7 formed in the shape of a groove facing both sides of the vibro is fixed to the opposite end of the vibro.
そして、このアームホルダ７には第２図および第３図に
示すようにバイブロを介して対向するアーム８，８がピ
ン１１，１１によって揺動可能にそれぞれ取付けられて
いる。As shown in FIGS. 2 and 3, arms 8 and 8 are mounted to the arm holder 7 so as to be swingable by pins 11 and 11, respectively, and are opposed to each other via a vibro.
このアーム８にはロープ１２が設けられ、またアームホ
ルダ７とバイブロとの間には補強リブ１３が設けられて
いる。This arm 8 is provided with a rope 12, and a reinforcing rib 13 is provided between the arm holder 7 and the vibro.
このように構成された中性子源ホルダ取替装置には、第
５図および第６図に示すようにバイブロにその先端側、
すなわちフック１０側から中性子源ホルダ１が挿嵌され
、鉢部５がバイブロに当接することによって、それ以上
の挿嵌が阻止されるように構成されている。As shown in FIGS. 5 and 6, the neutron source holder replacement device configured in this manner has a vibro on its tip side,
That is, the neutron source holder 1 is inserted from the hook 10 side, and the pot portion 5 comes into contact with the vibro, thereby preventing further insertion.
中性子源ホルダ１の挿入先端部は、第５図に示すように
ロープ１２を矢印ａ方向に引張ることにより、相互のア
ーム８，８に働く矢印す方向の力によって支持されるよ
うに構成されている。The insertion tip of the neutron source holder 1 is configured to be supported by the force acting on the mutual arms 8, 8 in the direction of the arrow a by pulling the rope 12 in the direction of the arrow a, as shown in FIG. There is.
そして、この際中性子源ホルダ１の鍔４は、アーム８゜
８による支持位置より稍上方に位置するようになされて
いる。At this time, the collar 4 of the neutron source holder 1 is positioned slightly above the position supported by the arm 8.8.
このように、ロープ１２．１２で中性子源ホルダ取替装
置を吊上げれば、中性子源ホルダ取替装置とともに中性
子のホルダ１も持ち上げられることになる。In this way, when the neutron source holder replacement device is lifted with the rope 12.12, the neutron holder 1 is also lifted together with the neutron source holder replacement device.
一方、ロープ９で中性子源ホルダ取替装置を吊上げれば
、第６図に示すようにロープ１２，１２が緩み、自重に
よってアーム８，８は開放され、中性子源ホルダ１の鍔
４に触れることなく、中性子源ホルダ１への取付、取外
し力泪由に行なえることになる。On the other hand, when the neutron source holder replacement device is lifted with the rope 9, the ropes 12, 12 become loose as shown in FIG. Therefore, it can be attached to and detached from the neutron source holder 1 without any force.
次に作用を説明する。Next, the action will be explained.
まず、ロープ９，１２を把持して第７図に示すように中
性芋源ホルダ取替装置を燃料プール１４内の仮置ラック
近くの水中に吊下げる。First, the neutral potato source holder replacement device is suspended in water near the temporary rack in the fuel pool 14 by grasping the ropes 9 and 12, as shown in FIG.
そして、中性子源ホルダ１の仮置ラック１５に保管され
ている中性子源ホルダ１に取付ける。Then, it is attached to the neutron source holder 1 stored in the temporary rack 15 of the neutron source holder 1.
次いで、ロープ１２で中性子源ホルダ取替装置および中
性子源ホルダ１を吊上げ、仮置ラック１５から取外し、
ワーキングテーブル１６まで移動させる。Next, the neutron source holder replacement device and the neutron source holder 1 are lifted up with the rope 12 and removed from the temporary rack 15,
Move it to the working table 16.
次いで、ロープ１２を下げつつロープ９を引張り上げて
中性子源ホルダ取替装置を倒置して、中性子源ホルダ１
内の２本のアンチモンソース２をワーキングテーブル１
６の上のアンチモンソース［回収箱１１の中へ落す。Next, pull up the rope 9 while lowering the rope 12, invert the neutron source holder replacement device, and replace the neutron source holder 1.
Place the two antimony sources 2 on the working table 1.
Antimony sauce on top of 6 [Drop into collection box 11.
アンチモンソース２を取出し終えた中性子源ホルダ１は
、燃料プール１４の底に設けた破損燃料ランク１８へ排
棄される。The neutron source holder 1 from which the antimony source 2 has been removed is discharged to a damaged fuel rank 18 provided at the bottom of the fuel pool 14.
次いで、新品中性子源ホルダ１を中性子源取替装置を用
いて仮置ラック１５に取付ける。Next, the new neutron source holder 1 is attached to the temporary rack 15 using a neutron source replacement device.
次いで、アンチモンソース回収箱１７に取出されたアン
チモンソース２をアンチモンソース掴み具１９で掴み新
品中性子源ホルダ１へ装荷する。Next, the antimony source 2 taken out into the antimony source collection box 17 is grabbed by the antimony source gripper 19 and loaded into the new neutron source holder 1.
以上説明したように本発明実施の一態様によれば、中性
子源ホルダ１を掴むための動力源としての圧縮空気、水
圧および電気等を一切必要とぜず、簡単な操作により少
人員かつ短時間で作業をすることができまた、弱く壊れ
易い中性子源ホルダを折れ曲がりや打撃による破損等か
ら有効に防止することができ、さらには装置の構成が簡
単であるので、製作コストが低廉であるとともに堅牢で
あるという効果を奏する。As explained above, according to one embodiment of the present invention, there is no need for compressed air, water pressure, electricity, etc. as a power source for gripping the neutron source holder 1, and the operation is simple and can be performed with fewer people and in a shorter time. In addition, the neutron source holder, which is weak and easily broken, can be effectively prevented from being bent or damaged by impact.Furthermore, since the device is simple in structure, manufacturing costs are low and it is robust. It has the effect of being
第１図ａは中性子源ホルダの部分破開断面図、第１図す
はアンチモンソースの拡大図、第２図は本発明に係る中
性子源ホルダ取替装置の一例を示す平面図、第３図は同
正面図、第４図は同側面図、第５図および第６図は中性
子源ホルダ取替装置の作動状態を示す断面図、第１図は
本発明に係る中性子源ホルダ取替装置の使用方法を示す
斜視図である。
１・・・・・・中性子源ホルダ、２・・・・・・アンチ
モンソース、４・・・・・・鍔、５・・・・・・鉢部、
６・・・・・・パイプ、８・・・・・・アーム、９，１
２・・・・・・ロープ、１４・・・・・・燃料プール、
１５・・・・・・仮置ラック、１６・・・・・・ワーキ
ングテーブル、１８・・・・・・破損燃料ラック。FIG. 1a is a partially exploded sectional view of the neutron source holder, FIG. 1 is an enlarged view of the antimony source, FIG. 2 is a plan view showing an example of the neutron source holder replacement device according to the present invention, and FIG. is a front view of the same, FIG. 4 is a side view of the same, FIGS. 5 and 6 are cross-sectional views showing the operating state of the neutron source holder replacement device, and FIG. 1 is a diagram of the neutron source holder replacement device according to the present invention. It is a perspective view showing how to use it. 1... Neutron source holder, 2... Antimony source, 4... Tsuba, 5... Pot part,
6...Pipe, 8...Arm, 9,1
2...Rope, 14...Fuel pool,
15...Temporary rack, 16...Working table, 18...Damaged fuel rack.
Claims (1)
イプと、このパイプの上端側に設けられ上下に揺動じて
中性子源ホルダの係止部近傍を保持可能なアームと、パ
イプの下端部に取付けられた第１０−プと、前記アーム
に取付けられた第２０−プとを具備してなり、アームは
、第２０−プを吊上げることによって前記係止部近傍を
保持し、かつ第１０−プを吊上げることによって前記保
持を解除するように構成されてなることを特徴とする中
性子源ホルダの取替装置。1. A pipe that abuts and supports the neutron source holder to be loaded at its lower end, an arm that is provided at the upper end of this pipe and can swing up and down to hold the neutron source holder near the locking part, and a lower end of the pipe. and a 20th arm attached to the arm, the arm holds the vicinity of the locking part by lifting the 20th arm, and 1. A neutron source holder replacement device, characterized in that the neutron source holder replacement device is configured to release the holding by lifting the neutron source holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53048466A JPS5816720B2 (en) | 1978-04-24 | 1978-04-24 | Neutron source holder replacement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53048466A JPS5816720B2 (en) | 1978-04-24 | 1978-04-24 | Neutron source holder replacement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54140098A JPS54140098A (en) | 1979-10-30 |
| JPS5816720B2 true JPS5816720B2 (en) | 1983-04-01 |
Family
ID=12804141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53048466A Expired JPS5816720B2 (en) | 1978-04-24 | 1978-04-24 | Neutron source holder replacement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5816720B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03107424U (en) * | 1990-02-17 | 1991-11-06 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI427643B (en) * | 2010-09-16 | 2014-02-21 | Atomic Energy Council | A nuclear reactor startup neutron sources capture device |
-
1978
- 1978-04-24 JP JP53048466A patent/JPS5816720B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03107424U (en) * | 1990-02-17 | 1991-11-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54140098A (en) | 1979-10-30 |
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