JPS62191797A - Fuel exchanger - Google Patents
Fuel exchangerInfo
- Publication number
- JPS62191797A JPS62191797A JP61033057A JP3305786A JPS62191797A JP S62191797 A JPS62191797 A JP S62191797A JP 61033057 A JP61033057 A JP 61033057A JP 3305786 A JP3305786 A JP 3305786A JP S62191797 A JPS62191797 A JP S62191797A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- gripping
- hanging load
- control device
- load
- 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
- 239000000446 fuel Substances 0.000 title claims description 128
- 230000000712 assembly Effects 0.000 description 12
- 238000000429 assembly Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000004904 shortening Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 241001494479 Pecora Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding 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
- Fuel-Injection Apparatus (AREA)
- Feeding And Controlling Fuel (AREA)
- Control And Safety Of Cranes (AREA)
- 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等における燃料集合体等
の原子燃料の取扱装置及び取扱方法に係り、特に燃料集
合体の取扱い作業の時間短縮及び作業の簡略化に好適な
取扱い方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an apparatus and method for handling nuclear fuel such as fuel assemblies in nuclear power plants, etc., and particularly to a method for shortening the time required for handling work of fuel assemblies. This relates to a handling method suitable for simplifying work.
従来の装置（特開昭５２−１３７８５６号公報）では、
自動運転による燃料集合体の炉心或いは燃料ラックへの
装荷作業において、燃料集合体を炉心等に引っ掛かり現
象（燃料スティック）及び荷重計の応答性が良いために
燃料集合体下部が、トップグリッド及び燃料集合体上部
等にわずかに接触しただけでも燃料スティックを検出し
てしまい自動運転が停止してしまう問題がある。また、
自動運転が停止した場合、運転員が、スティック状態を
確認するため運転モードを自動から手動に切替えて、押
釦スイッチを押して燃料つかみ装置を停止位置から一旦
上昇させる。その後押釦スィッチを押して燃料つかみ装
置を下降させ燃料集合体の再装荷を行うという操作を行
っていた。このため操作が煩雑であり１作業時間がかか
る等の問題があった。In the conventional device (Japanese Unexamined Patent Publication No. 52-137856),
During loading of fuel assemblies into the reactor core or fuel racks during automatic operation, the lower part of the fuel assembly is stuck to the top grid and fuel due to the phenomenon of the fuel assembly getting caught in the core (fuel stick) and the good response of the load cell. There is a problem in that even a slight contact with the upper part of the assembly will cause the fuel stick to be detected and automatic operation to stop. Also,
When automatic operation stops, the operator switches the operation mode from automatic to manual in order to check the stick condition and presses the push button switch to temporarily raise the fuel gripping device from the stop position. Thereafter, the push button switch was pressed to lower the fuel gripping device and reload the fuel assembly. For this reason, there were problems such as the operation was complicated and took a long time.
上記従来技術は、炉心或いは、燃料ラックに燃料集合体
を装荷する作業において、燃料集合体のわずかな撮れ等
により、トップグリッド又は、燃料ハンドル上部に、わ
ずか接触しただけでも燃料スティックを検出してしまい
、自動運転を停止してしまう問題があった。また、自動
運転が停止した場合、同じ位置で再装荷した場合、はと
んどが問題なく装荷できるのに手動にて時間をかけて再
装荷しなければならない間遠があった。The above conventional technology detects fuel sticks even if they slightly touch the top grid or the upper part of the fuel handle due to slight photographing of the fuel assemblies during loading of fuel assemblies into the reactor core or fuel rack. There was a problem where the automatic operation would stop. In addition, when automatic operation is stopped and reloading at the same location, most of the time it can be loaded without problems, but it takes a long time to manually reload.
本発明の目的は、燃料挿入時に作業上問題無いわずかな
引掛りによる瞬時の過渡的な荷重信号をタイマーにより
カットし、燃料移送時間の短縮を行うこと及び本当のス
ティックが発生し、燃料つかみ具の下降が停止した場合
、自動的に燃料つかみ具の上昇、再装荷を行うことの可
能な燃料交換機を提供することにある。The purpose of the present invention is to use a timer to cut off the instantaneous transient load signal caused by a slight catch that causes no operational problems when inserting fuel, thereby shortening the fuel transfer time and preventing the occurrence of a true stick. To provide a fuel exchange machine capable of automatically raising a fuel grip and reloading the fuel when the lowering of the fuel stops.
上記目的は、燃料スティック回路（燃料ホイストの荷重
条件回路）にタイマー回路を追加すること及び燃料ステ
ィックによる自動運転停止後、自動で再起動を指令する
指令装置とを設けること文より達成される。The above object is achieved by adding a timer circuit to the fuel stick circuit (fuel hoist load condition circuit) and providing a command device that automatically commands restart after stopping automatic operation due to the fuel stick.
燃料交換機による燃料集合体の炉心或いは、燃料ラック
への装荷及び引抜き等の燃料交換作業は一般的に自動運
転にて行われているが、この自動運転の停止原因を分析
して見ると、燃料集合体の装荷時の燃料スティック（燃
料集合体の下部が。Refueling operations, such as loading and unloading fuel assemblies into the reactor core or fuel rack using refueling machines, are generally performed in automatic operation, but an analysis of the causes of the stoppage of this automatic operation shows that fuel Fuel stick when loading the assembly (lower part of the fuel assembly.
炉心トップグリッド及び燃料）・ンドル上部洗接触し、
つかみ具の吊り荷重が、燃料集合体を吊っているかいな
いかの判定に用いる定格荷重値以下となった場合に、吊
り状態が異常と判断し、黙料の装荷を止めてしまう）が
大部分を占めている。The core top grid and fuel) are in contact with the upper part of the reactor,
In most cases, when the hanging load of the grip falls below the rated load value used to determine whether the fuel assembly is suspended or not, the suspension condition is determined to be abnormal and loading of the fuel assembly is stopped. occupies .
また、前記燃料スティック現象を詳細に分析してみると
、燃料挿入作業上問題の無いわずかな引掛りＫよる瞬時
の過渡的な定格吊り荷重の変動（減少）で、自動運転が
停止し、ているケースが非常に多い。In addition, a detailed analysis of the fuel stick phenomenon shows that automatic operation stops due to an instantaneous transient fluctuation (decrease) in the rated lifting load due to a slight catch K that does not cause any problem during fuel insertion work. There are very many cases.
また、自動運転が停止［７た後の再装荷の手段としても
、自動運転モードを手動モードに切替えて燃料つかみ具
を一刀上昇させ１手動にて再度下降することにより燃料
集合体の再装置を行っていた。In addition, as a means of reloading after automatic operation has stopped [7], the fuel assembly can be reloaded by switching the automatic operation mode to manual mode, raising the fuel grip in one stroke, and lowering it again manually. I was going.
従来、この再装荷の作業は、運転員が手動運転にて行っ
ていたため、作業が煩雑である９作業性が悪い等の問題
があった。Conventionally, this reloading work was performed manually by an operator, which caused problems such as the work being complicated and the workability being poor.
本発明では、前記問題点を解決するために、下記に示す
働きがある。In order to solve the above problems, the present invention has the following functions.
燃料スティック回路に追設したタイマー回路は定格吊り
荷重値以下の信号を受けて作動し、タイマーが設定時間
を過ぎても、前記定格量シ荷重値以下の信号が入力され
つづけていたとき、初めて燃料ホイストの停止信号を出
す。これにより正規の燃料スティックのみを検出できる
働きがある。The timer circuit added to the fuel stick circuit is activated when it receives a signal below the rated lifting load value, and when the timer continues to receive a signal below the rated lifting load value even after the set time has elapsed, Gives a stop signal for the fuel hoist. This allows it to detect only genuine fuel sticks.
・また、燃料スティックにより自動運転が停止し−た場
合、自動で再起動を指令する指令装置により自動で再装
荷できる働きがある。・In addition, if automatic operation is stopped due to fuel stick, there is a command device that automatically commands restart, allowing automatic reloading.
第６図（Ａ）に原子炉炉心の横断面図を示す。 FIG. 6(A) shows a cross-sectional view of the reactor core.
本図において、１は燃料集合体、２１ば、制御棒、２２
は、ＬＰＲＭ（局所出力モニタ）を示す。また拡大図で
ある第６図（Ｂ）に示すごとく、制御棒２１を囲む４本
の燃料集合体１はセルを構成している。In this figure, 1 is a fuel assembly, 21 is a control rod, and 22 is a fuel assembly.
indicates LPRM (Local Power Monitor). Further, as shown in FIG. 6(B) which is an enlarged view, the four fuel assemblies 1 surrounding the control rod 21 constitute a cell.
原子炉を運転すると炉心の反応度が低下するため、定期
的に古い燃料集合体を新しい燃料集合体と交換しなけれ
ばならない。この運転期間をサイクルと呼び、各サイク
ル末期に新燃料との交換が行われる。炉心の燃料集合体
本数は、１１０万ＫＷ級の発電用原子炉では約８００体
であり、再定検毎に１／４〜１／３炉心分の燃料集合体
の交換が必要となる。この糧の燃料交換作業は、原子炉
定検時のクリティカルパスとなっており、燃料交換時間
の短縮は、原子力発電所の定検回数の短縮につな）がす
し′は・原子力発電所の高度利用に連がる・従来の燃料
交換作業につき以下【説明する。燃料交換機２は燃料交
換床上に設置された走行レール（図示なし）上を移動可
能な走行台車３と走行台車３上に設置された横行レール
（図示なし）上を移動可能な横行台車４、横行台車４に
取付けられた燃料つかみ装置５．燃料つかみ装置５の先
端に取付けられた燃料つかみ具６１等で構成され。When operating a nuclear reactor, the reactivity of the reactor core decreases, so old fuel assemblies must be periodically replaced with new fuel assemblies. This operating period is called a cycle, and the fuel is replaced with new fuel at the end of each cycle. The number of fuel assemblies in the core is approximately 800 in a 1.1 million KW class power reactor, and it is necessary to replace 1/4 to 1/3 of the fuel assemblies in the core at every re-inspection. This fuel exchange work is a critical path during regular nuclear reactor inspections, and shortening the fuel exchange time will lead to a reduction in the number of regular inspections at nuclear power plants. The conventional fuel exchange work related to high altitude utilization is explained below. The fuel exchange machine 2 includes a running trolley 3 that can move on a running rail (not shown) installed on a fuel exchange floor, a traversing trolley 4 that can move on a traversing rail (not shown) installed on the running trolley 3, and a traversing trolley 4 that can move on a traversing rail (not shown) installed on the running trolley 3 Fuel gripping device attached to truck 4 5. It is composed of a fuel gripping tool 61 and the like attached to the tip of the fuel gripping device 5.
燃料つかみ具６によりつかんだ使用済の燃料集合体１を
燃料ラック１５へ装荷、あるいは燃料つか具６によりつ
かんだ新しい燃料集合体１を炉心１４に装荷する等の燃
料交換作業が行われる。Fuel exchange operations are performed, such as loading the spent fuel assembly 1 grabbed by the fuel gripper 6 onto the fuel rack 15, or loading a new fuel assembly 1 gripped by the fuel gripper 6 into the core 14.
これら一連の作業は、燃料交換機２のプロセスコンピュ
ータ（図示なし）により自動運転で行われる。この自動
運転による燃料交換作業のうち、燃料集合体重を炉心上
部格子板１４あるいは、燃料ラック１５に装荷する際Ｋ
、燃料集合体１の下端部と炉心上部格子板１４等に引掛
り現象（燃料スティック）が発生した場合（作業上問題
になら制御装置は、すべてのスティック現象（つかみ具
の吊り荷重が、定格値以下になった事象すべて）を不具
合として、自動運転の停止指令を出すが。These series of operations are automatically performed by a process computer (not shown) of the fuel exchanger 2. In this automatic fuel exchange work, when loading the fuel assembly weight onto the core upper grid plate 14 or the fuel rack 15,
If a sticking phenomenon (fuel stick) occurs between the lower end of the fuel assembly 1 and the upper core grate plate 14, etc. (if it becomes a work problem, the control device All events in which the value falls below this value are treated as defects and a command to stop automatic operation is issued.
実際には、瞬間的に、定格値以下となったものがあシ、
同じ位置で再装荷を行った場合、９０％近くが、問題な
く装荷可能であった。この現象は。In reality, there are things that momentarily drop below the rated value.
When reloading at the same location, nearly 90% of the cases were able to be loaded without any problems. This phenomenon is.
燃料交換機２の自動運転停止原因の大部分を占めておシ
、復旧は、運転員の手動運転により行っている。This accounts for most of the causes of automatic operation stoppage of the fuel exchanger 2, and restoration is performed by manual operation by an operator.
本発明の一実施例である燃料交換機２を、第１〜４図に
より説明する。A fuel exchanger 2 which is an embodiment of the present invention will be explained with reference to FIGS. 1 to 4.
本発明の燃料交換機２は、炉心と燃料プール上を走行す
る走行台車３．走行台車３の上に敷設されたレール上を
走行する横行台車４．横行台車４上部から懸垂された燃
料つかみ装置５．これらを自動にて制御するプロセス計
算機１３．プロセス計算機からの指令によりホイスト１
１の昇降を行うホイスト制御装置１２．燃料スティック
７時の燃料再装荷を指令する燃料再装置スイッチ１７゜
−及び燃料つかみ具６の吊シ荷重を検出する、荷重検出
器８．荷重検出器８からの荷重信号１８によ一チ作動す
るタイマー装置１９及びタイマー装置からの信号（図示
なし）によシ作動する燃料スティック検出装置２０より
構成される。The fuel exchanger 2 of the present invention includes a traveling truck 3. A traversing truck 4 that runs on rails laid on top of the traveling truck 3. 5. Fuel gripping device suspended from the top of the traversing truck 4. A process computer that automatically controls these 13. Hoist 1 according to instructions from the process computer
Hoist control device 12. A fuel reloading switch 17° for commanding fuel reloading at the time of the fuel stick 7 and a load detector 8 for detecting the lifting load of the fuel gripper 6. It is comprised of a timer device 19 that is activated in response to the load signal 18 from the load detector 8, and a fuel stick detection device 20 that is activated in response to a signal (not shown) from the timer device.
燃料つかみ具６に吊下げられた燃料集合体１の炉心等へ
の装荷、または、炉心等からの引抜きは燃料つかみ装置
ｉ！ｓの下端部に位置する、燃料つかみ具６の上端に接
続されたワイヤロープ７を、成行台車４上部に設置され
たシーブ９を介してホイスト１１によシ巻取り、または
巻出しすることにより行う。ここで、シーブ９には、ワ
イヤロープ７にかかった吊シ荷重を検出する荷重検出器
８が取付けられている。また、ホイスト１１には、燃料
つかみ具６の位置を検出する位置検出器１０が取付けら
れている。The fuel assembly 1 suspended from the fuel gripping device 6 is loaded into the reactor core, etc., or extracted from the reactor core, etc. using the fuel gripping device i! By winding up or unwinding the wire rope 7 connected to the upper end of the fuel gripper 6 located at the lower end of s by the hoist 11 via the sheave 9 installed on the upper part of the carriage 4. conduct. Here, a load detector 8 for detecting a lifting load applied to the wire rope 7 is attached to the sheave 9. Further, a position detector 10 for detecting the position of the fuel gripper 6 is attached to the hoist 11.
今、自動運転にて、燃料集合体１を炉心へ装荷しようと
している。燃料集合体１は、ホイスト制御装置１２の下
降指令により下降している。その後、燃料集合体１がわ
ずか炉心へすでに装荷されている燃料集合体１のハンド
ル上部あるいは、炉の変動を荷重検出器８で検出し、あ
らかじめ計算機に記憶し、である荷重以下になったとき
、タイマー装置１９のタイマーが作動する。このタイマ
ー〇殻宛のわずかな設定時間以内だ荷重かもとの荷重値
に戻れば、前記荷重変動は１問題なしと判断し、現状の
動作指令を維持する。しかし、前記荷重変動がタイマー
が切れても戻らなければ燃料がスティックしていると判
断し、燃料スティック検出装置２０を作動させ、ホイス
ト１１の下降を停止させる。Currently, fuel assembly 1 is being loaded into the reactor core in automatic operation. The fuel assembly 1 is being lowered by a lowering command from the hoist control device 12. Thereafter, the load detector 8 detects fluctuations in the upper part of the handle of the fuel assembly 1 that has already been loaded into the reactor core, or in the reactor, and stores it in advance in the computer, and when the load falls below a certain value. , the timer of the timer device 19 is activated. If the load returns to the original load value within the short time set for this timer, it is determined that there is no problem with the load fluctuation, and the current operation command is maintained. However, if the load fluctuation does not return even after the timer expires, it is determined that the fuel is stuck, and the fuel stick detection device 20 is activated to stop the hoist 11 from descending.
また、ホイスト１１の下降が停止したのち、炉心の燃料
集合体の状態を偽認し１問題なければます、１９止位置
から一定の距離まで燃料つか入具６を上昇させる。次に
７Ｉ＋度燃料つかみ具６を下降させ、燃料集合体１を炉
心・＼装荷する。これら一連の動作は、燃料再装荷スイ
ッチ１７を押すことにより全て計算機により自動的に行
われる。第３〜４図は、その動作説明図である。Further, after the lowering of the hoist 11 has stopped, if there is no problem with false recognition of the state of the fuel assembly in the reactor core, the fuel container 6 is raised to a certain distance from the stop position 19. Next, the fuel gripper 6 is lowered by 7I+ degrees, and the fuel assembly 1 is loaded into the core. These series of operations are all automatically performed by a computer by pressing the fuel reloading switch 17. 3 and 4 are explanatory diagrams of the operation.
以上により、燃料装荷時の作業上問題無い、わずかな引
掛りによる瞬時の荷重少による自動運転の停止現象がな
くなるとともに、万が一１燃料スティックが発生し運転
が停止した場合、自動運転の解除、燃料集合体の上昇及
び再装荷が全て運転員が手動にて行わざるを得なかった
が、自動運転で行うことができ１作業の簡略化、操作性
の向上及び燃料交換時間の短縮に大きな効果がある。As a result of the above, there will be no problem during fuel loading, and the phenomenon of automatic operation stopping due to an instantaneous drop in load due to a slight catch will be eliminated.In addition, in the unlikely event that fuel stick occurs and operation is stopped, automatic operation will be canceled and fuel All lifting and reloading of the assembly had to be done manually by the operator, but this can now be done automatically, which has a significant effect on simplifying the work, improving operability, and shortening the time for changing fuel. be.
本発明によれば、今まで自動運転にて炉心等へ燃料集合
体の装荷を行っている際て、燃料挿入作業上問題無い、
わずかな引掛りによる瞬時の荷重減少の検出による燃料
スティックでの自動運転停止現象がなくなシ、毎定検時
の燃料交換作業の効率が、約３０％向上し、運転員の負
担も大巾に軽減される。According to the present invention, there is no problem in fuel insertion work when loading fuel assemblies into the reactor core etc. in automatic operation.
This eliminates the phenomenon of automatic operation stoppage due to fuel sticks due to the detection of instantaneous load reduction due to slight snags, improves the efficiency of fuel exchange work during regular inspections by approximately 30%, and significantly reduces the burden on operators. will be reduced to
また、燃料スティック時の運転停止の処置としても自動
運転の解除、燃料集合体の上昇及び再装荷は全て運転員
が手動運転により行わざるを得なかったが、自動運転で
行うことができるので作業の簡略化及び操作性の向上の
効果がある。In addition, as a measure to stop operation when fuel sticks, the operator had to manually cancel automatic operation, raise the fuel assembly, and reload it, but now it can be done automatically. This has the effect of simplifying the process and improving operability.
第１図は本発明による燃料交換機の構成図、第２図は本
発明の詳細構成図（ブロック図）、第３図は本発明の動
作説明図、第４図は燃料集合体再装荷の動作説明図、第
５図は沸騰水型原子炉の断面図、第６図は原子炉炉心の
横断面図、第７図、は従来技術の燃料交換機の構成図、
第８図は従来技術の詳細構成図（ブロック図）、第９図
は従来技術の燃料集合体再装荷の動作説明図である。
１・・・燃料集合体、２・・・燃料交換機、３・・・走
行台車。
４・・・横行台車、５・・・燃料つかみ装置、６・・・
燃料つかみ具、７・・・つかみ具吊り用ワイヤロープ、
８・・・荷重検出器、９・・・シープ、１０・・・位置
検出器。
１１・・・ボイス）、１２・・・ホイスト制御装置、１
３・・・プロセス計算機、１４・・・炉心上部格子板、
１５・・・燃料ラック、１６・・・ホイスト制御信号、
１７・・・燃料再装荷スイッチ、１８・・・荷重信号、
１９・・・タイマー装置、２０・・・燃料スティック検
出装置。Fig. 1 is a block diagram of a fuel exchanger according to the present invention, Fig. 2 is a detailed block diagram (block diagram) of the present invention, Fig. 3 is an explanatory diagram of the operation of the present invention, and Fig. 4 is an operation of reloading a fuel assembly. Explanatory drawings, FIG. 5 is a cross-sectional view of a boiling water reactor, FIG. 6 is a cross-sectional view of the reactor core, and FIG. 7 is a configuration diagram of a conventional fuel exchange machine.
FIG. 8 is a detailed configuration diagram (block diagram) of the prior art, and FIG. 9 is an explanatory diagram of the operation of reloading a fuel assembly according to the prior art. 1... Fuel assembly, 2... Fuel exchange machine, 3... Traveling trolley. 4...Traversing trolley, 5...Fuel gripping device, 6...
Fuel grip, 7... Wire rope for hanging the grip,
8... Load detector, 9... Sheep, 10... Position detector. 11...Voice), 12...Hoist control device, 1
3... Process computer, 14... Core upper grid plate,
15... Fuel rack, 16... Hoist control signal,
17...Fuel reload switch, 18...Load signal,
19... Timer device, 20... Fuel stick detection device.
Claims (1)
て敷設されたレール上を走行する走行台車と走行台車上
に敷設されたレール上を横行する横行台車と横行台車に
伸縮可能なつかみ具ガイド管（以下、伸縮管と略す）と
伸縮管の先端に取付けられるつかみ具とからなる燃料つ
かみ装置を備えこれらの動きを自動で制御する計算機と
制御装置を備え前記計算機の指令により炉心及び燃料ラ
ック上の燃料の装荷位置を自動で位置決めし燃料の移動
を行う燃料交換機において、前記つかみ具の吊り荷重を
ワイヤロープの張力で検出する装置と前記検出器からの
荷重信号により燃料を装荷中、つかみ具の吊り荷重が定
格値以下になった場合燃料がスティックしたとして前記
巻取機を停止させる制御装置と前記制御装置において、
つかみ具の吊り荷重が定格値以下になったときに作動す
るタイマーを設けタイマーの設定時間以内に前記つかみ
具の吊り荷重が定格値に戻らなかった場合に初めて燃料
がスティックしたと判断し前記巻取機の下降を停止させ
る制御装置を設けたことを特徴とする燃料交換機。 ２、特許請求の範囲第１項において、燃料スティックを
検出し燃料の自動運転による装荷が停止された後、自動
で再起動を指令する指令装置とを備えたことを特徴とす
る燃料交換機。[Scope of Claims] 1. A traveling bogie that runs on rails laid between the core and fuel pool of a nuclear power plant, a traversing bogie that traverses on rails laid on the traveling bogie, and a traversing bogie that expands and contracts. The fuel gripping device includes a gripping guide tube (hereinafter referred to as a telescopic tube) and a gripping device attached to the tip of the telescopic tube, and includes a computer and a control device that automatically control the movements of the fuel gripping device. In a refueling machine that automatically positions the fuel loading position on the reactor core and fuel rack and moves the fuel, there is a device that detects the hanging load of the grip using the tension of the wire rope, and a device that detects the hanging load of the grip using the tension of the wire rope. A control device that stops the winder as fuel sticks if the hanging load of the grip becomes less than the rated value while loading the winder; and the control device,
A timer is provided that operates when the hanging load of the gripping tool falls below the rated value, and when the hanging load of the gripping tool does not return to the rated value within the set time of the timer, it is determined that the fuel has stuck, and the A fuel exchange machine characterized by being provided with a control device for stopping the lowering of a demolition machine. 2. A fuel exchange machine according to claim 1, further comprising a command device that detects a fuel stick and automatically commands a restart after automatic fuel loading is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61033057A JPH077094B2 (en) | 1986-02-19 | 1986-02-19 | Refueling machine and refueling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61033057A JPH077094B2 (en) | 1986-02-19 | 1986-02-19 | Refueling machine and refueling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62191797A true JPS62191797A (en) | 1987-08-22 |
| JPH077094B2 JPH077094B2 (en) | 1995-01-30 |
Family
ID=12376124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61033057A Expired - Lifetime JPH077094B2 (en) | 1986-02-19 | 1986-02-19 | Refueling machine and refueling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH077094B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01262499A (en) * | 1988-04-14 | 1989-10-19 | Toshiba Corp | Refueling machine |
| JP2013238559A (en) * | 2012-05-17 | 2013-11-28 | Hitachi-Ge Nuclear Energy Ltd | Fuel handling device |
| CN111354492A (en) * | 2018-12-21 | 2020-06-30 | 核动力运行研究所 | Load protection device and method for single-rod replacement operation of fuel assembly |
-
1986
- 1986-02-19 JP JP61033057A patent/JPH077094B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01262499A (en) * | 1988-04-14 | 1989-10-19 | Toshiba Corp | Refueling machine |
| JP2013238559A (en) * | 2012-05-17 | 2013-11-28 | Hitachi-Ge Nuclear Energy Ltd | Fuel handling device |
| CN111354492A (en) * | 2018-12-21 | 2020-06-30 | 核动力运行研究所 | Load protection device and method for single-rod replacement operation of fuel assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH077094B2 (en) | 1995-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |