JPH1138176A - Method and device for measuring parallelism of attached end plug of nuclear fuel rod - Google Patents

Method and device for measuring parallelism of attached end plug of nuclear fuel rod

Info

Publication number
JPH1138176A
JPH1138176A JP9197005A JP19700597A JPH1138176A JP H1138176 A JPH1138176 A JP H1138176A JP 9197005 A JP9197005 A JP 9197005A JP 19700597 A JP19700597 A JP 19700597A JP H1138176 A JPH1138176 A JP H1138176A
Authority
JP
Japan
Prior art keywords
fuel rod
end plug
parallelism
nuclear fuel
measured
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
Application number
JP9197005A
Other languages
Japanese (ja)
Other versions
JP3078507B2 (en
Inventor
Tomohito Imai
井 智 史 今
Iku Nakamura
村 郁 中
Masaru Numata
田 勝 沼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Global Nuclear Fuel Japan Co Ltd
Original Assignee
Japan Nuclear Fuel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Nuclear Fuel Co Ltd filed Critical Japan Nuclear Fuel Co Ltd
Priority to JP09197005A priority Critical patent/JP3078507B2/en
Publication of JPH1138176A publication Critical patent/JPH1138176A/en
Application granted granted Critical
Publication of JP3078507B2 publication Critical patent/JP3078507B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

PROBLEM TO BE SOLVED: To quickly and accurately measure the parallelism of a by detecting the displacement between the center axis of fuel rod clad part and the center position of fuel rod end plug measured at a plurality of measuring points along the axis direction of fuel rod end plug part and measuring the difference in the displacements at the measuring points. SOLUTION: On a plurality of V blocks 12 set on a base table at an equal interval, nuclear fuel rods 11 are placed in horizontal state. A running dolly 14 is moved along a slide guide 13, laser sensors are operated at a plurality of measuring points of clad part and end part of the nuclear fuel rod 11, which position in the laser light region of each laser sensor the cross section of each measuring point of the nuclear fuel rod 11 exist is measured and input in an operator. Here, the center position of the nuclear fuel rod 11 on X, Y plane at the measuring point is measured. On the other hand, the moving position of the running dolly 14 is measured with a linear scale 19 and the center position of the nuclear fuel rod 11 at the measuring point is calculated in X, Y and Z dimensions.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、原子燃料棒におけ
る端栓の取付平行度を測定する平行度測定方法及び測定
装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallelism measuring method and apparatus for measuring the parallelism of mounting end plugs on a nuclear fuel rod.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】図4
は、一般的な原子燃料棒の縦断側面図であり、ジルコニ
ウム合金またはステンレス鋼製の被覆管1内に、二酸化
ウランUO2 などのペレット2を所定数装填し、一端に
挿入された押しばね3によってペレット2が押圧されて
いる。すなわち、上記被覆管1の下端に下部端栓4を溶
着しておき、ペレット2及び押しばね3を装填した後、
ペレット等を挿入した端部に上部端栓5が溶着されてい
る。ところで、上述の如き原子燃料棒はその多数本が互
いに平行に配列され、それらの各下部端栓4が下部タイ
プレートに挿入支持されるとともに、上部端栓5が上部
タイプレートに挿入支持されることによって燃料集合体
が構成されている。したがって、燃料集合体の各原子燃
料棒を互いに平行になるように保持するためには、被覆
管1とその被覆管1の両端に溶着された上、下部端栓
4,5とが正しく平行度を保っていることが必要であ
る。
2. Description of the Related Art FIG.
Is a longitudinal side view of a general nuclear fuel rod, in which a predetermined number of pellets 2 such as uranium dioxide UO 2 are loaded into a cladding tube 1 made of a zirconium alloy or stainless steel, and a pressing spring 3 inserted at one end. The pellet 2 is pressed. That is, the lower end plug 4 is welded to the lower end of the cladding tube 1 and the pellet 2 and the pressing spring 3 are loaded.
The upper end plug 5 is welded to the end where the pellets or the like are inserted. By the way, many of the above-mentioned nuclear fuel rods are arranged in parallel with each other, and their respective lower end plugs 4 are inserted and supported by the lower tie plate, and the upper end plugs 5 are inserted and supported by the upper tie plate. This constitutes a fuel assembly. Therefore, in order to hold the respective nuclear fuel rods of the fuel assembly so as to be parallel to each other, the cladding tube 1 and the upper and lower end plugs 4, 5 welded to both ends of the cladding tube 1 must be properly parallelized. Needs to be maintained.

【0003】このようなことから、被覆管に端栓を溶着
した後、その端栓が被覆管に対して正しく平行度を保っ
た状態で取付けられているか否かを測定することが行な
われている。
[0003] For this reason, after the end plug is welded to the cladding tube, it is measured whether or not the end plug is attached in a state where the parallelism is correctly maintained with the cladding tube. I have.

【0004】すなわち、上述のように端栓を溶着した原
子燃料棒を複数のVブロック上に載せ、上記端栓の先端
にダイヤルゲージを当てた状態で原子燃料棒を回転させ
ることにより、ダイヤルゲージの読み値が最も大きい個
所を探して、この位置からダイヤルゲージを燃料棒の軸
線方向に端栓のシャンク根本まで移動させ、燃料棒端栓
の先端とシャンク根本でのダイヤルゲージの読み値の差
をとることにより、原子燃料棒の端栓取付平行度の測定
を行っていた。
[0004] That is, the nuclear fuel rod having the end plug welded thereon is mounted on a plurality of V blocks, and the nuclear fuel rod is rotated while the dial gauge is in contact with the tip of the end plug, thereby obtaining the dial gauge. Find the point where the reading of the fuel rod is the largest, and move the dial gauge from this position in the axial direction of the fuel rod to the base of the end plug shank. Thus, the parallelism of the end plugs of the nuclear fuel rods was measured.

【0005】したがって、原子燃料棒の端栓取付平行度
の測定には長時間を要するばかりでなく、測定を行う検
査員によるばらつき等が生じて測定の信頼性も低く、ま
た検査員の労力も大きい等の問題がある。
Therefore, it takes not only long time to measure the parallelism of mounting the end plugs of the nuclear fuel rods, but also variation among the inspectors who perform the measurement causes low reliability of the measurements and labor of the inspectors. There is a problem such as large.

【0006】本発明は、このような点に鑑み、端栓取付
平行度を高速かつ信頼性の高い精度で測定し得る原子燃
料棒の端栓取付平行度測定方法及び測定装置を得ること
を目的とする。
SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a method and an apparatus for measuring the parallelism of the end plug of a nuclear fuel rod which can measure the parallelism of the end plug at high speed and with high accuracy. And

【0007】[0007]

【課題を解決するための手段】第1の発明は、原子燃料
棒の端栓取付平行度測定方法において、燃料棒被覆管部
の中心軸線と、燃料棒端栓部の軸線方向に沿う複数の測
定点で測定した上記燃料棒端栓の中心位置との間の変位
量をそれぞれ検出し、上記複数の測定点における各変位
量の差によって端栓の取付平行度を測定することを特徴
とする。
According to a first aspect of the present invention, there is provided a method for measuring the parallelism of the end plug of a nuclear fuel rod, wherein a plurality of fuel rods are provided along a central axis of the cladding tube and an axial direction of the end plug of the fuel rod. The displacement amount between the center position of the fuel rod end plug measured at the measurement point is detected, and the mounting parallelism of the end plug is measured by the difference between the displacement amounts at the plurality of measurement points. .

【0008】また、第2の発明は、原子燃料棒の端栓取
付平行度測定装置において、基盤上に支持された燃料棒
の長手方向軸線とほぼ平行方向に移動可能な走行台と、
その走行台に固定され、上記燃料棒の複数の測定点で燃
料棒の中心位置を測定する検出器とを有し、上記検出器
によって測定された測定値によって燃料棒被覆管部の中
心線を算出するとともに、燃料棒端栓部の軸線方向に沿
う複数の測定点で測定した上記燃料棒端栓の中心位置と
上記燃料棒被覆管部の中心軸線との間の変位量を算出す
る演算装置とを有することを特徴とする。
[0008] In a second aspect of the present invention, there is provided an apparatus for measuring the parallelism of an end plug of a nuclear fuel rod, comprising: a traveling platform movable in a direction substantially parallel to a longitudinal axis of the fuel rod supported on a base;
A detector that is fixed to the traveling platform and measures the center position of the fuel rod at a plurality of measurement points on the fuel rod, and the center line of the fuel rod cladding tube portion is determined by the measurement value measured by the detector. An arithmetic device that calculates and calculates a displacement amount between a center position of the fuel rod end plug measured at a plurality of measurement points along an axial direction of the fuel rod end plug and a center axis of the fuel rod cladding tube. And characterized in that:

【0009】[0009]

【発明の実施の形態】以下、図1乃至図3を参照して本
発明の実施の形態について説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

【0010】図1及び図2は本発明の原子燃料棒の端栓
取付平行度測定装置の概略構成を示す側面図及び正面図
であって、基盤10上には原子燃料棒11をほぼ水平状
態に支持する複数のVブロック12(図にはその1個の
みを示す)が互いに等間隔に設けられている。上記基盤
10上には、上記Vブロック12に載置されている原子
燃料棒11の一端部と対応する位置に、上記原子燃料棒
11の長手方向軸線と平行に延びるスライドガイド13
が敷設されており、そのスライドガイド13に走行台1
4がそのスライドガイド13に沿って移動可能に装架さ
れている。
FIGS. 1 and 2 are a side view and a front view, respectively, showing a schematic configuration of an apparatus for measuring the parallelism of an end plug of a nuclear fuel rod according to the present invention. , A plurality of V blocks 12 (only one of them is shown in the figure) are provided at equal intervals. A slide guide 13 extending parallel to the longitudinal axis of the nuclear fuel rod 11 is provided on the base 10 at a position corresponding to one end of the nuclear fuel rod 11 mounted on the V-block 12.
Is mounted on the slide guide 13 and the carriage 1
4 is movably mounted along the slide guide 13.

【0011】上記走行台14には前記Vブロック12上
に載置された原子燃料棒11の長手方向軸線と直交する
垂直面を有する検出器取付板15が立設されており、そ
の検出器取付板15には上記原子燃料棒11が挿通し得
るU字状の切欠き16が設けられている。さらに、上記
検出器取付板15には2個のレーザセンサ17,18が
装着されている。
A detector mounting plate 15 having a vertical surface perpendicular to the longitudinal axis of the nuclear fuel rod 11 mounted on the V-block 12 is erected on the traveling platform 14. The plate 15 is provided with a U-shaped notch 16 through which the nuclear fuel rod 11 can be inserted. Further, two laser sensors 17 and 18 are mounted on the detector mounting plate 15.

【0012】上記レーザセンサ17,18はそれぞれレ
ーザ光受光器17a,18aとレーザ光投光器17b,
18bとから構成されており、レーザ光受光器17a,
18aとレーザ光投光器17b,18bとが前記Vブロ
ック12上に載置されている原子燃料棒11の長手方向
軸線に対して対称位置に配設され、しかも両レーザセン
サ17,18のレーザ光が互いに直交するようにしてあ
る。
The laser sensors 17 and 18 include laser light receivers 17a and 18a and laser light projectors 17b and 17b, respectively.
18b, and the laser light receiver 17a,
The laser beams 18a and the laser beam projectors 17b and 18b are arranged symmetrically with respect to the longitudinal axis of the nuclear fuel rod 11 mounted on the V-block 12, and the laser beams of the two laser sensors 17 and 18 are provided. They are orthogonal to each other.

【0013】また、前記基盤10の一側部には、上記走
行台14の位置を検出し得るリニアスケール19が設け
られている。
On one side of the base 10, a linear scale 19 capable of detecting the position of the traveling platform 14 is provided.

【0014】しかして、端栓取付平行度の測定に際して
は、基盤10上に等間隔に設置された複数のVブロック
12上に原子燃料棒11を横置きの状態で載置する。そ
して、前記走行台14をスライドガイド13に沿って移
動させ、原子燃料棒11の被覆管部及び端栓部のそれぞ
れ2点以上の測定点においてレーザセンサ17,18を
作動させ、原子燃料棒の各測定点における断面が各レー
ザセンサ17,18のレーザ光の領域のどの位置にある
かを測定し、その測定結果が図示しない演算装置に入力
される。そして、各測定点におけるX,Y平面上の原子
燃料棒11の中心位置が測定される。一方、上記走行台
14の移動位置Zはリニアスケール19によって検出さ
れ、各測定点の位置信号も上記演算装置に入力され、そ
こで各測定点における原子燃料棒の中心位置がX,Y,
Zの3次元で算出される。
When measuring the parallelism of the end plugs, the nuclear fuel rods 11 are placed horizontally on a plurality of V-blocks 12 installed at equal intervals on the base 10. Then, the traveling platform 14 is moved along the slide guide 13, and the laser sensors 17, 18 are operated at two or more measurement points of the cladding tube portion and the end plug portion of the nuclear fuel rod 11, respectively. The position of the section at each measurement point in the laser light area of each of the laser sensors 17 and 18 is measured, and the measurement result is input to an arithmetic unit (not shown). Then, the center position of the nuclear fuel rod 11 on the X, Y plane at each measurement point is measured. On the other hand, the movement position Z of the traveling platform 14 is detected by the linear scale 19, and the position signal of each measurement point is also input to the arithmetic unit, where the center position of the nuclear fuel rod at each measurement point is X, Y, and X.
It is calculated in three dimensions of Z.

【0015】図3は、上記各測定点における中心位置の
算出にもとずく端栓取付平行度の算出方式を示す説明図
であって、上述のようにして測定された、各測定点にお
ける原子燃料棒の端栓部の中心の座標をP1 (X1 ,Y
1 ,Z1 )およびP2 (X2,Y2 ,Z2 )、被覆管部
の中心の座標をP3 (X3 ,Y3 ,Z3 ),P
4 (X4 ,Y4 ,Z4 )とすると、上記演算装置におい
て、P3 とP4 を結ぶ直線L1,及びその直線L1 と平
行でP2 を通る直線L2 が演算され、上記P1 から直線
2 におろした垂線との交点Pと上記P1 との2点間の
距離が端栓取付平行度とされる。
FIG. 3 is an explanatory view showing a method of calculating the end plug attachment parallelism based on the calculation of the center position at each of the above-mentioned measurement points, and shows the atom at each of the measurement points measured as described above. Let the coordinates of the center of the end plug of the fuel rod be P 1 (X 1 , Y
1 , Z 1 ) and P 2 (X 2 , Y 2 , Z 2 ), and the coordinates of the center of the cladding part are represented by P 3 (X 3 , Y 3 , Z 3 ), P
4 When (X 4, Y 4, Z 4) to, in the arithmetic apparatus, the straight line L 2 is calculated through the lines L 1, and parallel P 2 and the straight line L 1 connecting the P 3 and P 4, the the distance between the two points from P 1 between the intersection P and the P 1 with grated perpendicular to the straight line L 2 is a end plug attached parallelism.

【0016】このように、レーザセンサからの出力信号
及びリニアスケールの指示値を演算装置に入力すること
によって、上記平行度の演算を高速に処理することが可
能となる。また、原子燃料棒を連続的にVブロック上に
供給、払い出しすることによって上記平行度の測定を連
続的に行うこともできる。
As described above, by inputting the output signal from the laser sensor and the instruction value of the linear scale to the arithmetic unit, the calculation of the parallelism can be processed at high speed. The parallelism can be measured continuously by continuously supplying and discharging the nuclear fuel rods onto the V block.

【0017】さらに、レーザセンサで測定する原子燃料
棒の被覆管部及び端栓部の測定位置は、測定対象となる
原子燃料棒の種類に応じてリニアスケールの指示値を事
前に設定しておくことにより、適切な位置を測定するこ
とができる。
Further, as for the measurement position of the cladding tube portion and the end plug portion of the nuclear fuel rod measured by the laser sensor, the indicated value of the linear scale is set in advance in accordance with the type of the nuclear fuel rod to be measured. Thereby, an appropriate position can be measured.

【0018】[0018]

【発明の効果】以上説明したように、本発明は燃料棒端
栓部の軸線方向に沿う複数の測定点で測定した上記燃料
棒端栓の中心位置と被覆管部の中心軸線との間の変位量
の差によって端栓の取付平行度を3次元で測定するよう
にしたので、原子燃料棒の端栓取付平行度を高速かつ信
頼性の高い精度で測定することができ、しかも上記中心
位置データを演算装置に入力し、その演算装置によって
上記端栓取付平行度を演算測定することができて、測定
の自動化を図ることができる。したがって、上記測定を
検査員自身で行う必要がなく、検査員の測定に係わる労
力の低減効果を図るとともに測定に検査員によるばらつ
き等が生ずることもない等の効果を奏する。
As described above, according to the present invention, the distance between the center position of the fuel rod end plug measured at a plurality of measurement points along the axial direction of the fuel rod end plug and the center axis of the cladding tube portion is measured. Since the parallelism of the end plugs is measured in three dimensions based on the difference in the displacement amount, the parallelism of the end plugs of the nuclear fuel rods can be measured at high speed and with high accuracy. The data is input to a computing device, and the computing device can calculate and measure the parallelism of the end plug mounting, thereby making it possible to automate the measurement. Therefore, it is not necessary for the inspector to perform the above-mentioned measurement by himself / herself, so that it is possible to reduce the labor involved in the measurement by the inspector, and to achieve the effect that the measurement does not vary by the inspector.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の原子燃料棒の端栓取付平行度測定装置
の概略構成を示す側面図。
FIG. 1 is a side view showing a schematic configuration of a parallelism measuring device for mounting end plugs of a nuclear fuel rod according to the present invention.

【図2】図1の正面図。FIG. 2 is a front view of FIG. 1;

【図3】各測定点における中心位置の算出にもとずく端
栓取付平行度の算出方式を示す説明図。
FIG. 3 is an explanatory diagram showing a calculation method of end plug attachment parallelism based on calculation of a center position at each measurement point.

【図4】一般的な原子燃料棒の縦断側面図。FIG. 4 is a longitudinal side view of a general nuclear fuel rod.

【符号の説明】[Explanation of symbols]

1 被覆管 2 ペレット 4 下部端栓 5 上部端栓 10 基盤 11 原子燃料棒 12 Vブロック 13 スライドガイド 14 走行台 15 検出器取付板 16 切欠き 17,18 レーザセンサ 19 リニアスケール DESCRIPTION OF SYMBOLS 1 Clad pipe 2 Pellet 4 Lower end plug 5 Upper end plug 10 Base 11 Nuclear fuel rod 12 V block 13 Slide guide 14 Travel stand 15 Detector mounting plate 16 Notch 17, 18 Laser sensor 19 Linear scale

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】燃料棒被覆管部の中心軸線と、燃料棒端栓
部の軸線方向に沿う複数の測定点で測定した上記燃料棒
端栓の中心位置との間の変位量をそれぞれ検出し、上記
複数の測定点における各変位量の差によって端栓の取付
平行度を測定することを特徴とする、原子燃料棒の端栓
取付平行度測定方法。
An amount of displacement between a central axis of the fuel rod cladding tube and a center position of the fuel rod end plug measured at a plurality of measurement points along the axial direction of the fuel rod end plug is detected. A method for measuring the parallelism of mounting the end plug of a nuclear fuel rod, wherein the parallelism of mounting the plug is measured based on a difference between the displacement amounts at the plurality of measurement points.
【請求項2】燃料棒端栓部の或る測定点における燃料棒
端栓の中心を通り、燃料棒被覆管部の中心軸線と平行な
線と、燃料棒端栓部の他の測定点における中心位置との
間の変位量によって端栓の取付平行度を測定することを
特徴とする、請求項1記載の原子燃料棒の端栓取付平行
度測定方法。
2. A line passing through the center of the fuel rod end plug at a certain measurement point of the fuel rod end plug portion and parallel to the central axis of the fuel rod cladding tube portion and at another measurement point of the fuel rod end plug portion. 2. The method according to claim 1, wherein the parallelism of mounting the end plug is measured based on a displacement amount between the center plug and the center position.
【請求項3】基盤上に支持された燃料棒の長手方向軸線
と平行方向に移動可能な走行台と、その走行台に固定さ
れ、上記燃料棒の複数の測定点で燃料棒の中心位置を測
定する検出器とを有し、上記検出器によって測定された
測定値によって燃料棒被覆管部の中心線を算出するとと
もに、燃料棒端栓部の軸線方向に沿う複数の測定点で測
定した上記燃料棒端栓の中心位置と上記燃料棒被覆管部
の中心軸線との間の変位量を算出する演算装置とを有す
ることを特徴とする、原子燃料棒の端栓取付平行度測定
装置。
3. A traveling platform which is movable in a direction parallel to a longitudinal axis of a fuel rod supported on a base, and is fixed to the traveling platform, and a center position of the fuel rod is measured at a plurality of measurement points of the fuel rod. Having a detector for measuring, and calculating the center line of the fuel rod cladding tube portion by the measured value measured by the detector, and measuring at a plurality of measurement points along the axial direction of the fuel rod end plug portion An apparatus for measuring the parallelism of an end plug of a nuclear fuel rod, comprising: a calculating device for calculating a displacement amount between a center position of the fuel rod end plug and a central axis of the fuel rod cladding tube.
【請求項4】走行台に固定された検出器は非接触式のレ
ーザセンサであり、上記走行台の移動方向に直交すると
ともに互いに直交する方向にレーザ光を投光する2つの
レーザセンサからなることを特徴とする、請求項3記載
の原子燃料棒の端栓取付平行度測定装置。
4. A detector fixed to the traveling platform is a non-contact type laser sensor, and comprises two laser sensors for projecting laser beams in directions perpendicular to the moving direction of the traveling platform and to each other. The parallelism measuring device for mounting end plugs of a nuclear fuel rod according to claim 3, characterized in that:
【請求項5】燃料棒の軸線方向の複数の測定点は、走行
台の移動位置を検出するリニアスケールによって検出さ
れることを特徴とする、請求項3記載の原子燃料の端栓
取付平行度測定装置。
5. The parallelism of claim 3, wherein a plurality of measurement points in the axial direction of the fuel rod are detected by a linear scale for detecting a moving position of the traveling platform. measuring device.
JP09197005A 1997-07-23 1997-07-23 Method and apparatus for measuring parallelism in mounting end plugs of nuclear fuel rods Expired - Fee Related JP3078507B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09197005A JP3078507B2 (en) 1997-07-23 1997-07-23 Method and apparatus for measuring parallelism in mounting end plugs of nuclear fuel rods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09197005A JP3078507B2 (en) 1997-07-23 1997-07-23 Method and apparatus for measuring parallelism in mounting end plugs of nuclear fuel rods

Publications (2)

Publication Number Publication Date
JPH1138176A true JPH1138176A (en) 1999-02-12
JP3078507B2 JP3078507B2 (en) 2000-08-21

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011080962A (en) * 2009-10-09 2011-04-21 Denso Corp Apparatus and method for measuring runout
US8885789B2 (en) 2008-09-15 2014-11-11 Areva Nc Device for measuring and correcting a parallelism error in a nuclear fuel rod
CN110926388A (en) * 2019-12-03 2020-03-27 中铁九局集团有限公司 Structure for determining center position of pier column and application thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8885789B2 (en) 2008-09-15 2014-11-11 Areva Nc Device for measuring and correcting a parallelism error in a nuclear fuel rod
JP2011080962A (en) * 2009-10-09 2011-04-21 Denso Corp Apparatus and method for measuring runout
CN110926388A (en) * 2019-12-03 2020-03-27 中铁九局集团有限公司 Structure for determining center position of pier column and application thereof
CN110926388B (en) * 2019-12-03 2021-07-13 中铁九局集团有限公司 Structure for determining center position of pier column and application thereof

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