JPH10213692A - Measurement device for control rod guide tube deformation of nuclear reactor fuel assembly - Google Patents
Measurement device for control rod guide tube deformation of nuclear reactor fuel assemblyInfo
- Publication number
- JPH10213692A JPH10213692A JP9016843A JP1684397A JPH10213692A JP H10213692 A JPH10213692 A JP H10213692A JP 9016843 A JP9016843 A JP 9016843A JP 1684397 A JP1684397 A JP 1684397A JP H10213692 A JPH10213692 A JP H10213692A
- Authority
- JP
- Japan
- Prior art keywords
- control rod
- tube
- guide
- rod guide
- base end
- 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
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、原子炉燃料の構成
部材の形状を測定する装置に関し、特に加圧水型原子炉
の燃料集合体の制御棒案内管の変形を測定する装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring the shape of a component of a reactor fuel, and more particularly to an apparatus for measuring a deformation of a control rod guide tube of a fuel assembly of a pressurized water reactor.
【0002】[0002]
【従来の技術】加圧水型原子炉では、細長い制御棒をク
ラスタ状に組み立てた制御棒組立体乃至制御棒クラスタ
を一般に使用しており、従って図5及び図6に示すよう
な構造の燃料集合体10を使用している。この燃料集合
体10の構造を概説すると、上部ノズル11と下部ノズ
ル12は、複数の互いに平行に延びた制御棒案内管13
の両端に溶接又はねじ止め等の適宜な方法により連結さ
れている。この制御棒案内管13の平面的配置は、特に
図6に支持格子14との関係で示されている。支持格子
14は、14行×14列の配置の格子開口16を有する
平面形状を有しており、例えば16本の制御棒案内管1
3が所定の回転対称配置で挿通、固定されている。この
ような支持格子14は、特に図5に明示されるように制
御棒案内管13の長手方向に間隔をおいて配設されてい
て、制御棒案内管13が挿入されない格子開口16に
は、燃料棒17が一本づつ挿通され、弾性的に支持され
ている。尚、支持格子14は14×14個の格子開口1
6を有しているが、種々の配列の格子開口、例えば17
×17や21×21の配列のものも使用されている。2. Description of the Related Art In a pressurized water reactor, a control rod assembly or a control rod cluster in which elongated control rods are assembled in a cluster shape is generally used. Therefore, a fuel assembly having a structure as shown in FIGS. 10 is used. The structure of the fuel assembly 10 will be briefly described. The upper nozzle 11 and the lower nozzle 12 include a plurality of control rod guide tubes 13 extending in parallel with each other.
Are connected to each other by an appropriate method such as welding or screwing. This planar arrangement of the control rod guide tube 13 is shown in particular in FIG. The support grid 14 has a planar shape having grid openings 16 arranged in 14 rows × 14 columns, for example, 16 control rod guide tubes 1.
3 are inserted and fixed in a predetermined rotationally symmetric arrangement. Such a supporting grid 14 is arranged at intervals in the longitudinal direction of the control rod guide tube 13 as clearly shown in FIG. 5, and is provided in a grid opening 16 in which the control rod guide tube 13 is not inserted. The fuel rods 17 are inserted one by one and are elastically supported. The support grid 14 has 14 × 14 grid openings 1.
6, but with various arrangements of grid openings, for example 17
X17 and 21x21 arrays are also used.
【0003】[0003]
【発明が解決しようとする課題】而して、燃料集合体は
原子炉炉心の中で使用され、熱及び主として中性子から
なる放射線の照射を受ける。そして一般的に制御棒案内
管13の受ける熱及び放射線の量はその長手方向及び円
周方向において一様ではないので、例えば図7に若干誇
張して概念的に示すように湾曲などの変形を起こす。尚
図において理解されるように、支持格子14は、制御棒
案内管14の横断面内において高い剛性を有するので、
構造力学的な支点として示され、制御棒案内管13は支
点間で変形を生じている。このような湾曲等の変形が制
御棒案内管13に生ずると、狭い間隙を有して挿入され
る制御棒の挿入に抵抗が生じ、大きくなる。そして原子
炉トリップ時においては、制御棒は自由落下により制御
棒案内管の中に挿入されるので、変形のよる挿入抵抗が
大きくなると、挿入時間の増大等を招来して好ましくな
い。従って、制御棒案内管の変形が許容範囲にあるか否
かを計測、判断することが求められている。しかしなが
ら、前述したように制御棒案内管13は核燃料棒17に
囲まれていて外側から計測器を接近させることができな
い上に、一旦原子炉内で燃焼に供された燃料集合体10
は通常放射能を帯びていて、計測のために人間が接近す
るのはかなり困難であるなどの問題がある。従って、本
発明は、放射能を帯びた燃料集合体の制御棒案内管の変
形等を遠隔的に安全且つ正確に計測できる原子炉用燃料
集合体の制御棒案内管変形計測装置を提供することを課
題とするものである。Thus, the fuel assemblies are used in a nuclear reactor core and are exposed to heat and radiation mainly consisting of neutrons. In general, since the amount of heat and radiation received by the control rod guide tube 13 is not uniform in the longitudinal direction and the circumferential direction, for example, deformation such as bending is slightly exaggerated in FIG. Wake up. As can be seen in the figure, the support grid 14 has high rigidity in the cross section of the control rod guide tube 14,
It is shown as a structural mechanical fulcrum, and the control rod guide tube 13 is deformed between the fulcrums. When such deformation such as bending occurs in the control rod guide tube 13, resistance is generated in the insertion of the control rod inserted with a narrow gap, and the control rod becomes large. At the time of a reactor trip, the control rod is inserted into the control rod guide tube by free fall. Therefore, an increase in the insertion resistance due to deformation undesirably increases the insertion time. Therefore, it is required to measure and determine whether the deformation of the control rod guide tube is within an allowable range. However, as described above, the control rod guide tube 13 is surrounded by the nuclear fuel rods 17 so that the measuring instrument cannot be approached from the outside, and the fuel assembly 10 once subjected to combustion in the nuclear reactor
Is usually radioactive and has problems such as being very difficult for humans to approach for measurement. Accordingly, the present invention provides a control rod guide tube deformation measuring device for a fuel assembly for a nuclear reactor, which is capable of remotely and safely measuring deformation of a control rod guide tube of a radioactive fuel assembly. Is the subject.
【0004】[0004]
【課題を解決するための手段】如上の課題を解決するた
め、本発明によれば、上部ノズル、下部ノズル、前記両
ノズルにそれぞれ両端が連結され互いに平行に延びた複
数の制御棒案内管、この制御棒案内管に挿通され制御棒
案内管の長手方向に間隔をおいて配設された複数の支持
格子及びこの支持格子の格子開口に挿通され互いに平行
に延びて支持された複数の燃料棒を有する原子炉用燃料
集合体の制御棒案内管変形計測装置は、制御棒案内管の
中に挿入される案内基準管と、この案内基準管の先端に
設けられ膨脹収縮部材を備えた先端保持具と、前記案内
基準管の基端に設けられた基端保持具と、この基端保持
具に連結され装置全体を吊り下げる長尺操作軸と、前記
案内基準管の基端開口に連通された圧縮流体給排器と、
前記案内基準管の外側に軸方向にのみ移動自在に嵌装さ
れた計測子と、前記基端保持具を通して延び前記計測子
を案内基準管に沿って駆動する手段とを有して構成され
る。According to the present invention, there is provided, in accordance with the present invention, an upper nozzle, a lower nozzle, a plurality of control rod guide tubes each having both ends connected to the nozzles and extending in parallel with each other, A plurality of support grids inserted through the control rod guide tube and arranged at intervals in the longitudinal direction of the control rod guide tube, and a plurality of fuel rods inserted through the grid openings of the support grid and extending parallel to each other and supported. The control rod guide tube deformation measuring device for a fuel assembly for a reactor has a guide reference tube inserted into the control rod guide tube, and a tip holding member provided with an expansion / contraction member provided at the tip of the guide reference tube. Tool, a base end holder provided at the base end of the guide reference tube, a long operation shaft connected to the base end holder and suspending the entire apparatus, and communicated with a base opening of the guide reference tube. Compressed fluid supply and discharge device,
It comprises a measuring element fitted movably only in the axial direction outside the guide reference pipe, and means extending through the base end holder and driving the measuring element along the guide reference pipe. .
【0005】[0005]
【発明の実施の形態】以下、添付の図面を参照して本発
明の実施形態を説明する。尚、前述の図面を含め全図に
亘り、同一部分には同一の符号を付している。図1は、
燃料集合体10の制御棒案内管13周りの構造を概念的
に示したものである。制御棒案内管13の上端は上部ノ
ズル11に連結され、上方に向かって開口して制御棒を
受け入れるようになっており、一方下端は制御棒が落下
したときにダッシュポットの機能が生ずるように若干細
くなっている。図2に本発明による変形計測装置20の
構造が制御棒案内管13内に設置した状態で示されてい
る。従って、特に図示されていないが、制御棒案内管1
3を含む燃料集合体10は水中にあると理解すべきであ
る。変形計測装置20は細長い案内基準管21を有し、
その先端に先端保持具30が取り付けられている。先端
保持具30の円筒形本体31は、案内基準管21の先端
部を通し、その広がった先端を本体31と円錐形の先端
案内具33とで挟み込み、更に本体31の上端側におい
て固定具35で案内基準管21を固定している。更に本
体3の胴側部には膨張収縮自在の弾性膜37が気密に嵌
着され、これの内側にある空気室38に通じる導孔39
が形成されている。この空気室38には、後述するよう
に案内基準管21を通して圧縮空気が供給され、弾性膜
37を外方に膨張させ、制御棒案内管13の内面に押し
付け、案内基準管21の先端部を制御棒案内管13の最
下端部に固定する。Embodiments of the present invention will be described below with reference to the accompanying drawings. The same portions are denoted by the same reference numerals throughout the drawings including the above-described drawings. FIG.
2 conceptually shows a structure around a control rod guide tube 13 of a fuel assembly 10. The upper end of the control rod guide tube 13 is connected to the upper nozzle 11 and opens upward to receive the control rod, while the lower end is designed to perform a dashpot function when the control rod falls. It is slightly thinner. FIG. 2 shows the structure of the deformation measuring device 20 according to the present invention in a state where it is installed in the control rod guide tube 13. Therefore, although not particularly shown, the control rod guide tube 1 is not shown.
It should be understood that the fuel assembly 10 including 3 is underwater. The deformation measuring device 20 has an elongated guide reference tube 21,
A tip holder 30 is attached to the tip. The cylindrical main body 31 of the distal end holder 30 passes through the distal end of the guide reference tube 21, sandwiches the spread distal end between the main body 31 and the conical distal end guide 33, and furthermore, a fixing member 35 at the upper end side of the main body 31. Guide guide tube 21 is fixed. Further, an elastic film 37 which can expand and contract is airtightly fitted to the body side portion of the main body 3, and a guide hole 39 communicating with an air chamber 38 inside the elastic film 37.
Are formed. Compressed air is supplied to the air chamber 38 through the guide reference tube 21 as described later, and expands the elastic film 37 outward, presses the elastic film 37 against the inner surface of the control rod guide tube 13, and closes the distal end of the guide reference tube 21. The control rod guide tube 13 is fixed to the lowermost end.
【0006】又、案内基準管21の上端部には基端保持
具40が取り付けられている。基端保持具40は、上部
ノズル11の上面に載る当接面41を備えた本体43を
有し、案内基準管21の基端拡大部を本体43と上部固
定具45とで挟み込んで固定している。そして上部固定
具45はホース23を介して図示しない圧縮空気給排部
に連絡し、本体43は水面上まで延びる長尺の操作軸2
5に連結され、水面上の操作床上から変形計測装置20
を操作できるようになっている。基端保持具40と先端
保持具30との間の案内基準管21には、計測子組立体
50が移動可能に取り付けられている。計測子組立体5
0は、円環状の形状を有し、且つ回転が規制された摺動
体である取付具51とその外周に90度間隔で取り付け
られた計測子即ち超音波探触子53が固定されている。
超音波探触子53は、反射超音波を検出して距離A,
B,C,Dを検出するものであるが、場合によっては渦
流探触子や歪みゲージ式計測子でも良い。そして超音波
探触子53の信号線を兼ねた吊り紐55が取付具51に
連結され、更に基端保持具40の本体43を通し、更に
操作軸25の中を延びて計測員の操作が可能になってい
る。A base holder 40 is attached to the upper end of the guide reference tube 21. The base end holder 40 has a main body 43 having a contact surface 41 placed on the upper surface of the upper nozzle 11, and fixes the base end enlarged portion of the guide reference tube 21 by sandwiching the main end between the main body 43 and the upper fixing part 45. ing. The upper fixture 45 is connected to a compressed air supply / discharge unit (not shown) via the hose 23, and the main body 43 is a long operating shaft 2 extending to the surface of the water.
5 from above the operation floor on the water surface
Can be operated. A tracing stylus assembly 50 is movably attached to the guide reference tube 21 between the proximal end holder 40 and the distal end holder 30. Probe assembly 5
Reference numeral 0 denotes an attachment 51 which has an annular shape and is a sliding body whose rotation is restricted, and a measuring element, that is, an ultrasonic probe 53 attached to the outer periphery thereof at 90 ° intervals is fixed.
The ultrasonic probe 53 detects the reflected ultrasonic waves and detects the distance A,
Although B, C, and D are detected, an eddy current probe or a strain gauge type probe may be used in some cases. Then, a hanging string 55 also serving as a signal line of the ultrasonic probe 53 is connected to the mounting tool 51, further passes through the main body 43 of the base end holding tool 40, further extends through the operation shaft 25, and is operated by a measurement operator. It is possible.
【0007】以上説明した構造の変形計測装置20を使
用して燃料集合体10の制御棒案内管13の変形を計測
する手順を説明する。先ず、水面上で変形計測装置20
の操作軸25の上端を把持し、図4に示すように水中に
置かれた燃料集合体10の計測目標の制御棒案内管13
内に案内基準管21及び先端保持具30を挿入する。そ
して、基端保持具40の本体43が上部ノズル11の上
面に当接して載ったら、圧縮空気給排器からホース2
3、案内基準管21を介して先端保持具30に圧縮空気
を供給し、弾性膜37を膨張させて案内基準管21の先
端を固定する。しかる後、操作軸25を若干持ち上げる
と、案内基準管21に張力が作用し、真っすぐに伸び
る。その状態を保持したまま、吊り紐55により計測子
組立体50乃至超音波探触子53を案内基準管21に沿
って上昇させ、各高さ位置即ち制御棒案内管13の各長
手方向位置で距離A,B,C,Dを計測し、距離データ
を記録する。このような距離データを所定の方法で演算
処理して、制御棒案内管13の変形を計測することがで
きる。尚、前述の変形計測装置20では、計測子である
超音波探触子53を90度間隔で4個配置したが、その
円周間隔を短縮して更に多くの超音波探触子53を配置
すれば更に精確な変形形状を計測することができる。更
に又、案内基準管21を制御棒案内管の中心位置でな
く、偏心させることにより案内基準管の半径以上の曲が
りも計測することができる。A procedure for measuring the deformation of the control rod guide tube 13 of the fuel assembly 10 using the deformation measuring device 20 having the structure described above will be described. First, the deformation measuring device 20
The upper end of the operation shaft 25 is gripped, and the control rod guide tube 13 as a measurement target of the fuel assembly 10 placed in water as shown in FIG.
The guide reference tube 21 and the tip holder 30 are inserted therein. Then, when the main body 43 of the base end holder 40 comes in contact with the upper surface of the upper nozzle 11, the hose 2 is connected to the hose 2 from the compressed air supply / discharge device.
3. Compressed air is supplied to the tip holder 30 via the guide reference pipe 21 to expand the elastic film 37 and fix the tip of the guide reference pipe 21. Thereafter, when the operation shaft 25 is slightly lifted, a tension acts on the guide reference pipe 21 and the guide reference pipe 21 is straightened. While maintaining the state, the measuring element assembly 50 to the ultrasonic probe 53 are moved up along the guide reference tube 21 by the hanging string 55, and at each height position, that is, at each longitudinal position of the control rod guide tube 13. The distances A, B, C, and D are measured, and the distance data is recorded. By calculating such distance data by a predetermined method, the deformation of the control rod guide tube 13 can be measured. In the deformation measuring device 20 described above, four ultrasonic probes 53 as measuring elements are arranged at 90 ° intervals, but the circumferential interval is shortened and more ultrasonic probes 53 are arranged. Then, a more accurate deformed shape can be measured. Furthermore, by bending the guide reference pipe 21 not at the center position of the control rod guide pipe but eccentrically, it is possible to measure a bend larger than the radius of the guide reference pipe.
【0008】[0008]
【発明の効果】以上説明したように、本発明によれば、
水面上方から操作軸を介して変形計測装置を燃料集合体
の制御棒案内管内に挿入し、内側から内面変位を計測す
ることにより制御棒案内管の湾曲等の変形を計測でき
る。As described above, according to the present invention,
By inserting the deformation measuring device into the control rod guide tube of the fuel assembly from above the water surface via the operation shaft and measuring the inner surface displacement from the inside, deformation such as bending of the control rod guide tube can be measured.
【図1】本発明により変形が計測される燃料集合体の制
御棒案内管の形状を示す概念図である。FIG. 1 is a conceptual diagram showing the shape of a control rod guide tube of a fuel assembly whose deformation is measured by the present invention.
【図2】本発明の実施形態を示す一部省略立断面図であ
る。FIG. 2 is a partially omitted vertical sectional view showing an embodiment of the present invention.
【図3】図2に対応する平断面図である。FIG. 3 is a plan sectional view corresponding to FIG. 2;
【図4】前記実施形態における変形計測装置の作用を説
明するための装着概念図である。FIG. 4 is a conceptual mounting diagram for explaining the operation of the deformation measuring device in the embodiment.
【図5】本発明によって変形が計測される制御棒案内管
が含まれる燃料集合体の全体概念図である。FIG. 5 is an overall conceptual diagram of a fuel assembly including a control rod guide tube whose deformation is measured by the present invention.
【図6】図5のVI−VI線に沿う拡大断面図である。FIG. 6 is an enlarged sectional view taken along line VI-VI of FIG. 5;
【図7】制御棒案内管の変形状態を示す概念図である。FIG. 7 is a conceptual diagram showing a deformed state of a control rod guide tube.
10 燃料集合体 13 制御法案内管 20 変形計測装置 21 案内基準管 23 ホース 25 操作軸 30 先端保持具 31 本体 33 先端案内具 35 固定具 37 弾性膜 38 空気室 39 導孔 40 基端保持具 41 当接面 43 本体 45 上部固定具 50 計測組立体 51 取付具 53 超音波探触子 55 吊り紐 A,B,C,D 距離 DESCRIPTION OF SYMBOLS 10 Fuel assembly 13 Control method guide pipe 20 Deformation measuring device 21 Guide reference pipe 23 Hose 25 Operation axis 30 Tip holder 31 Main body 33 Tip guide 35 Fixture 37 Elastic film 38 Air chamber 39 Guide hole 40 Base end holder 41 Contact surface 43 Main body 45 Upper fixture 50 Measurement assembly 51 Fixture 53 Ultrasonic probe 55 Suspension string A, B, C, D Distance
Claims (1)
にそれぞれ両端が連結され互いに平行に延びた複数の制
御棒案内管、同制御棒案内管が挿通され該制御棒案内管
の長手方向に間隔をおいて配設された複数の支持格子及
び同支持格子の格子開口に挿通され互いに平行に延びて
支持された複数の燃料棒を有する原子炉用燃料集合体の
前記制御棒案内管の変形を計測する装置であって、 前記制御棒案内管の中に挿入される案内基準管と、同案
内基準管の先端に設けられ膨脹収縮部材を備えた先端保
持具と、前記案内基準管の基端に設けられた基端保持具
と、同基端保持具に連結され装置全体を吊り下げる長尺
操作軸と、前記案内基準管の基端開口に連通された圧縮
流体給排器と、前記案内基準管の外側に軸方向にのみ移
動自在に嵌装された計測子と、前記基端保持具を通して
延び前記計測子を前記案内基準管に沿って駆動する手段
とを有してなることを特徴とする原子炉用燃料集合体の
制御棒案内管変形計測装置。1. An upper nozzle, a lower nozzle, a plurality of control rod guide tubes, both ends of which are connected to the nozzles and extending in parallel with each other, and the control rod guide tubes are inserted and spaced apart in the longitudinal direction of the control rod guide tubes. The deformation of the control rod guide tube of the fuel assembly for a nuclear reactor having a plurality of support grids disposed in the same manner and a plurality of fuel rods that are inserted through the grid openings of the support grid and extend parallel to each other and are supported. An apparatus for measuring, comprising: a guide reference pipe inserted into the control rod guide pipe; a tip holder provided with an expansion / contraction member at a distal end of the guide rod; and a proximal end of the guide reference pipe. A long operation shaft connected to the base end holder and suspending the entire apparatus; a compressed fluid supply / discharge device communicated with a base end opening of the guide reference pipe; A gauge fitted movably only in the axial direction outside the reference pipe Son and control rod guide tube deformation measuring apparatus for a nuclear reactor fuel assembly, characterized by comprising a means for driving the Keisokuko extending through said base end retainer along said guide reference tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP01684397A JP3469029B2 (en) | 1997-01-30 | 1997-01-30 | Control rod guide tube deformation measurement system for reactor fuel assemblies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP01684397A JP3469029B2 (en) | 1997-01-30 | 1997-01-30 | Control rod guide tube deformation measurement system for reactor fuel assemblies |
Publications (2)
Publication Number | Publication Date |
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JPH10213692A true JPH10213692A (en) | 1998-08-11 |
JP3469029B2 JP3469029B2 (en) | 2003-11-25 |
Family
ID=11927499
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Application Number | Title | Priority Date | Filing Date |
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JP01684397A Expired - Lifetime JP3469029B2 (en) | 1997-01-30 | 1997-01-30 | Control rod guide tube deformation measurement system for reactor fuel assemblies |
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JP (1) | JP3469029B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102667957A (en) * | 2009-11-12 | 2012-09-12 | 阿利发Np有限公司 | Method and device for determining the deformation of a fuel element of a pressurized-water reactor |
JP2012225859A (en) * | 2011-04-22 | 2012-11-15 | Nuclear Fuel Ind Ltd | Temperature measurement body of control rod guide thimble, temperature measurement device of fuel assembly and temperature measurement method |
KR101602169B1 (en) * | 2014-12-11 | 2016-03-11 | 한전원자력연료 주식회사 | Nuclear fuel assembly having functions to prevent flow-induced vibration and protect debris in ICI tube |
CN107230502A (en) * | 2017-06-09 | 2017-10-03 | 岭东核电有限公司 | Fuel assembly and its screen work and support insert |
CN112102974A (en) * | 2020-09-14 | 2020-12-18 | 中核核电运行管理有限公司 | Height measuring device for control rod driving rod of nuclear reactor |
CN112461189A (en) * | 2020-11-03 | 2021-03-09 | 中国地质科学院地质力学研究所 | Ground stress measuring strain gauge |
CN113418498A (en) * | 2021-06-23 | 2021-09-21 | 中国核动力研究设计院 | Panel deformation measuring component, device |
-
1997
- 1997-01-30 JP JP01684397A patent/JP3469029B2/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102667957A (en) * | 2009-11-12 | 2012-09-12 | 阿利发Np有限公司 | Method and device for determining the deformation of a fuel element of a pressurized-water reactor |
JP2013511027A (en) * | 2009-11-12 | 2013-03-28 | アレヴァ エンペー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Deformation detection method and apparatus for fuel element of pressurized water reactor |
EP2499644B1 (en) * | 2009-11-12 | 2015-01-21 | AREVA GmbH | Device for determining the deformation of a fuel element of a pressurized water reactor |
CN102667957B (en) * | 2009-11-12 | 2016-08-17 | 阿海珐有限公司 | For measuring the device that the fuel assembly of pressurized water reactor deforms |
JP2012225859A (en) * | 2011-04-22 | 2012-11-15 | Nuclear Fuel Ind Ltd | Temperature measurement body of control rod guide thimble, temperature measurement device of fuel assembly and temperature measurement method |
KR101602169B1 (en) * | 2014-12-11 | 2016-03-11 | 한전원자력연료 주식회사 | Nuclear fuel assembly having functions to prevent flow-induced vibration and protect debris in ICI tube |
CN107230502A (en) * | 2017-06-09 | 2017-10-03 | 岭东核电有限公司 | Fuel assembly and its screen work and support insert |
CN112102974A (en) * | 2020-09-14 | 2020-12-18 | 中核核电运行管理有限公司 | Height measuring device for control rod driving rod of nuclear reactor |
CN112461189A (en) * | 2020-11-03 | 2021-03-09 | 中国地质科学院地质力学研究所 | Ground stress measuring strain gauge |
CN113418498A (en) * | 2021-06-23 | 2021-09-21 | 中国核动力研究设计院 | Panel deformation measuring component, device |
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