JPS5855792A - Method of confirming bolt wrench fit of control rod drive exchanging device - Google Patents

Method of confirming bolt wrench fit of control rod drive exchanging device

Info

Publication number
JPS5855792A
JPS5855792A JP56153618A JP15361881A JPS5855792A JP S5855792 A JPS5855792 A JP S5855792A JP 56153618 A JP56153618 A JP 56153618A JP 15361881 A JP15361881 A JP 15361881A JP S5855792 A JPS5855792 A JP S5855792A
Authority
JP
Japan
Prior art keywords
crd
bolt
control rod
attachment
wrench
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
JP56153618A
Other languages
Japanese (ja)
Other versions
JPS6145196B2 (en
Inventor
甲賀 勇雄
石井 義美
吉田 富治
宮本 弘行
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56153618A priority Critical patent/JPS5855792A/en
Publication of JPS5855792A publication Critical patent/JPS5855792A/en
Publication of JPS6145196B2 publication Critical patent/JPS6145196B2/ja
Granted 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

  • Earth Drilling (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Gripping On Spindles (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】 本発明は制御棒駆動機構交換装置に係り、特に原子炉圧
力容器下部0CRD)・ウジングにCRDを取付けてい
る、CHDマウンティングボルトの六角穴と、CRD着
脱装置のボルトレンチの嵌合確認方法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control rod drive mechanism exchange device, and in particular, to a hexagonal hole of a CHD mounting bolt that attaches a CRD to a lower part of a reactor pressure vessel (0CRD) and housing, and a bolt wrench of a CRD attachment/detachment device. Regarding the fitting confirmation method.

CRDの交換作業は原子炉の定期点検時に行なわれる。CRD replacement work is performed during regular reactor inspections.

この作業は、高放射線雰囲気で実施されるだめ、特に作
業員の放射線被曝低減と省力化を図ることが必要でちる
。従来CRDマウンテインクボルトの六角穴と、ボルト
レンチの嵌合確認は作業員が目視により一本づつ行なっ
ているため、被曝低減及び省力化という面から大きな欠
点があった。
Since this work is carried out in a high-radiation atmosphere, it is especially necessary to reduce the radiation exposure of workers and save labor. Conventionally, workers had to visually check the fit between the hexagonal hole of the CRD mountain bolt and the bolt wrench one by one, which had a major drawback in terms of reducing radiation exposure and saving labor.

本発明の目的は、CR,Dを取付けているボルト六角穴
と、六角レンチの嵌合を、ボルト穴と六角レンチが嵌合
衝突した時の衝突音及び、エアモータの駆動音により、
遠隔位置で嵌合確認することにあり、これにより、作業
員の省力化差に、放射線被曝低減を図ることである。
The purpose of the present invention is to prevent the fitting of the hexagonal wrench and the bolt hexagonal hole that attaches CR and D by the collision sound when the bolt hole and the hexagonal wrench collide, and the drive sound of the air motor.
The purpose is to confirm the fit from a remote location, thereby saving labor and reducing radiation exposure for workers.

CRDは8本の取付ボルトで締付けられていて、その位
置合せは、CRDとCLAD着脱ヘッドとの中心を合せ
、次で、CRD着脱ヘッド(ボルトレンチ側)を回転さ
せボルト六角穴とボルトレンチの位置合せを行なってい
るが、六角穴と六角レンチは六角の位置が少しでもズレ
ると嵌合しない。
The CRD is tightened with eight mounting bolts, and their alignment is done by aligning the centers of the CRD and CLAD attachment/detachment head, then rotate the CRD attachment/detachment head (on the bolt wrench side) to connect the hexagonal hole of the bolt with the bolt wrench. The hexagonal socket and hexagonal wrench will not fit together if the hexagonal position is even slightly misaligned.

そのため、ボルトレンチを回転させ、作業員が目視によ
って嵌合確認していたため、非能率的であった。本発明
は、ボルトレンチを低速回転して、ボルト六角穴とボル
トレンチの六角が一致した際。
Therefore, the worker had to rotate the bolt wrench and visually check the fit, which was inefficient. In the present invention, when the bolt wrench is rotated at low speed and the bolt hexagon hole matches the hexagon of the bolt wrench.

ボルトレンチ下部に設けである圧縮コイルバネの釈放力
によって、ボルトレンチか急激に上昇シテ、ボルト六角
穴に衝突することに着目した。
We focused on the fact that due to the release force of the compression coil spring installed at the bottom of the bolt wrench, the bolt wrench suddenly rises and collides with the hexagonal hole of the bolt.

ボルトレンチの回転を最小にし、1本づつ回転駆動する
ことにより、順次ポブレトレンチの嵌合が衝突音及びエ
アモータの駆動音で確認できることが判明した。そのた
め、従来から行なっている、ボルト緩み確認方法と同様
、CHD着脱ヘッドに設けた振動計ピックアップで検知
し、格納容器の外に設置された操作盤上の指示計で受信
して、遠隔で、ボルトレンチの嵌合確認を可能にしだも
のである。以下本発明の一実施例を図に基づいて説明す
る。
It has been found that by minimizing the rotation of the bolt wrenches and rotating them one by one, the fitting of the poble trenches can be confirmed by the collision sound and the air motor drive sound. Therefore, similar to the conventional method of confirming bolt loosening, the vibration is detected by a vibration meter pickup installed on the CHD attachment/detachment head, received by an indicator on the operation panel installed outside the containment vessel, and remotely confirmed. This makes it possible to check the fit of the bolt wrench. An embodiment of the present invention will be described below based on the drawings.

第1図で、原子炉圧力容器1は格納容器2(以下PCV
とする)内に配置されたペデスタル3上に据付けられる
。原子炉圧力容器(以下RPVとする)1の下部に、C
R,Dハウジング4及び中性子計測用ハウジング5が突
出して設けられ、 RPVlの一部分を形成している。
In Figure 1, the reactor pressure vessel 1 is the containment vessel 2 (hereinafter referred to as PCV).
It is installed on a pedestal 3 located within the pedestal. At the bottom of the reactor pressure vessel (hereinafter referred to as RPV) 1, there is a C
R and D housings 4 and a neutron measurement housing 5 are provided to protrude and form a part of the RPVl.

CRD6は、CRDハウジング4内に収納される。ペデ
スタル3内で、RPVlの下方には空間7が形成される
。CR,Dを空間7内に出し入れする搬出人口8がペデ
スタル3に設けられる。空間7内でペデスタル3の側壁
にブラケット9が突出して設けられる。ブラケット9の
上部には、環状のレール1oが敷設されている。
The CRD 6 is housed within the CRD housing 4. A space 7 is formed within the pedestal 3 below the RPVl. An ejection port 8 for taking CR and D into and out of the space 7 is provided on the pedestal 3. A bracket 9 is provided to protrude from the side wall of the pedestal 3 within the space 7. An annular rail 1o is laid on the upper part of the bracket 9.

旋回移動装置11が、レールlo上を移動する。The turning movement device 11 moves on the rail lo.

CR,D交換装置12ハ、旋回移動装置11 、 CR
D着脱装置13及びCRD取扱装置14がら構成される
CR, D exchange device 12c, rotation movement device 11, CR
It is composed of a D attachment/detachment device 13 and a CRD handling device 14.

CR,D着脱装置13は走行台車15、着脱ヘッド16
から構成され、CRDマウンティングボルトの着脱、制
御棒とCRDのアンカップリング、アンカップリング確
認、ドレン処理及び着脱ヘッドの昇降等の機能を有し、
CRDハウジング4へのCRDの取付、取外しを行なう
ことができる。
The CR, D attachment/detachment device 13 includes a traveling trolley 15 and an attachment/detachment head 16.
It has functions such as attaching and detaching the CRD mounting bolt, uncoupling the control rod and CRD, confirming uncoupling, draining, and lifting and lowering the attachment/detachment head.
The CRD can be attached to and removed from the CRD housing 4.

CR,D取扱装置14は、走行台車17及びマスト18
から構成され、前記CRD着脱装置13で取外したCR
Dの受取り、受渡し及び横転機能を有している。
The CR, D handling device 14 includes a traveling truck 17 and a mast 18.
, and is removed by the CRD attaching/detaching device 13.
It has the receiving, delivering and overturning functions of D.

CRD取扱装置14により横転されたCRD6はC1l
’LD運搬用カート21に保持積載され、ペデスタル3
の搬出人口8から、ブリッジ19を介しPCV2の貫通
口20を通り搬出される。CRDの取付は取外しの逆の
手順で行なわれる。
The CRD6 that was overturned by the CRD handling device 14 is C1l.
'LD is held and loaded on the LD transport cart 21, and the pedestal 3
is carried out from the carrying-out port 8 through the bridge 19 and through the through-hole 20 of the PCV 2. Installation of the CRD is performed in the reverse order of removal.

前述したように本発明は、CI−LD取外しの際、CR
Dマウンティングボルトの六角穴と、六角レンチの嵌合
確認を、遠隔で行なうことを目的としている。従来この
ボルトレンチの嵌合は、作業員が近接して目視あるいは
、手で触れることにより確認しているが、高放射線雰囲
気であり、又作業性が著しく悪いため、被曝低減及び省
力化が強く望まれていたものである。以下図により本発
明のボルトレンチ嵌合確認方法について説明する。
As mentioned above, in the present invention, when removing the CI-LD, the CR
The purpose is to remotely check the fit between the hexagonal hole of the D-mounting bolt and the hexagonal wrench. Conventionally, the fit of this bolt wrench has been confirmed by workers in close proximity visually or by touching it with their hands, but this is in a high radiation atmosphere and has extremely poor workability, so reducing exposure and saving labor is strongly recommended. It was what was desired. The bolt wrench fitting confirmation method of the present invention will be explained below with reference to the drawings.

第2図は、CRD着脱装置13の上部概要を示している
。図は着脱ヘッド16が、昇降軸22に固定されて上昇
し、CRD6の下部に接続した状態を示している。この
状態からCFLDと制御棒の連結を解除し、CRDマウ
ンティングボルト23を緩めてCRDハウジング4内に
収納されているCFLD6を引抜くことができる。以下
CRDマウンティングポルト23の取外し手順を説明す
る。
FIG. 2 shows an outline of the upper part of the CRD attachment/detachment device 13. The figure shows a state in which the attachment/detachment head 16 is fixed to the elevating shaft 22, raised, and connected to the lower part of the CRD 6. From this state, the connection between the CFLD and the control rod can be released, the CRD mounting bolt 23 can be loosened, and the CFLD 6 housed in the CRD housing 4 can be pulled out. The procedure for removing the CRD mounting port 23 will be explained below.

第2図で、CRD6とCRり着脱ヘッド16の接続は、
CRDのテーパ一部24をシート25によりサポートし
て行なわれる。通常この位置では。
In FIG. 2, the connection between the CRD 6 and the CR attachment/detachment head 16 is as follows.
This is done by supporting the tapered portion 24 of the CRD with a sheet 25. Usually in this position.

CRDマウンティングボルト23の六角穴と、ボルトレ
ンチ30の六角部は、第3図に示す如く正確に合ってい
ないため、ボルトレンチ3oは、スプリング27の力に
抗して下方に押され、マウンティングボルト23の頭部
に乗り上げた状態にある。その後エアモータ26の微小
角度回転駆動により、互いの六角部が一致した瞬間に、
スプリング27の反発力でボルトレンチが嵌合する。こ
の時のエアモータの回転は超低速で、しかも低圧で行な
うことにより、各部の損傷を防止できる。このマウンテ
ィングボルトの六角穴とボルトレンチの嵌合完了の確認
は、振動計29で検出している。
Since the hexagonal hole of the CRD mounting bolt 23 and the hexagonal part of the bolt wrench 30 do not match accurately as shown in FIG. 3, the bolt wrench 3o is pushed downward against the force of the spring 27 and the mounting bolt It is in a state where it is on top of 23's head. After that, the minute angle rotation drive of the air motor 26 causes the hexagonal parts to coincide with each other.
The bolt wrench is fitted by the repulsive force of the spring 27. At this time, the air motor is rotated at extremely low speed and at low pressure to prevent damage to various parts. Completion of fitting between the hexagonal hole of the mounting bolt and the bolt wrench is confirmed by a vibration meter 29.

今、複数個のマウンティングボルトの着脱は。Now, how to install and remove multiple mounting bolts.

複数個のエアモータにより、全数同時に、あるいは1本
毎に可能であるが、振動計29はボルト全数に対して1
個設けている。第2図でマウンティングボルト230頭
部に、ボルトレンチ30が乗り上げた状態から、第4図
で、エアモータ26の微小回転駆動により、ボルトとレ
ンチの六角部が整合した瞬間、スプリング27の反発力
でボルトレンチ30が急激に上昇して、ボルト底部に衝
突し金属音が生じる。
With multiple air motors, it is possible to measure all the bolts at the same time or one by one, but the vibration meter 29 measures one bolt per bolt.
There are several. From the state in which the bolt wrench 30 rests on the head of the mounting bolt 230 in FIG. 2, in FIG. The bolt wrench 30 rises rapidly and collides with the bottom of the bolt, producing a metallic sound.

本発明は、この時の衝突音を前記振動計29で検知し、
増幅器31を介して、CR,D交換装置の操作盤32に
表示、確認するものである。複数個のボルトを順次タイ
マー設定等で嵌合確認するものである。
The present invention detects the collision sound at this time with the vibration meter 29,
It is displayed on the operation panel 32 of the CR/D exchange device for confirmation via the amplifier 31. This is to check the fit of multiple bolts one after another by setting a timer or the like.

本発明によれば、ボルトレンチの嵌合確認を、PCV外
に配置した操作盤上でできるため、作業員が高放射線雰
囲気のペデスタル内で、目視確認が不要となった。従っ
て、放射線被曝低減と省力化が可能で、原子力発電所の
定期点検期間短縮に寄与する。
According to the present invention, the fitting of the bolt wrench can be confirmed on the operation panel located outside the PCV, so it is no longer necessary for the worker to visually check inside the pedestal in a high radiation atmosphere. Therefore, it is possible to reduce radiation exposure and save labor, contributing to shortening periodic inspection periods at nuclear power plants.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はCRD交換装置の全体概要図、第2図はCRD
着脱ヘッド部分の概要図、第3図(イ)(ロ)はCRD
取付ボルトとボルトレンチの位置決め状態図、第4図は
CRD取付ボルトとボルトレンチの嵌合状態図、第5図
は振動検出要領図である。 1・・・原子炉圧力容器(RPV)、2・・・原子炉格
納容器(PCV)、3・・・ヘテスタル、4・・・CR
Dノ・ウジング、5・・・中性子計測用ハウジング、6
・・・制御棒駆動機構(CRD)、7・・・空間、8・
・・搬出入口、9・・・ブラケット、10・・・レール
、11・・・旋回移動装置、12・・・CFLD交換装
置、13・・・CR,D着脱装置、14・・・CFLD
取扱装置、15・・・走行台車、16・・・着脱ヘッド
、17・・・走行台車、18・・・マスト、19・・・
ブリッジ、20・・・貫通口、21・・・CRD運搬用
カート、22・・・昇降軸、23・・・CRDマウ/テ
ィングボルト、24・・・テーパ一部、25・・・シー
ト、26・・・エアモータ、27・・・スプリング、2
9・・・振動計、30・・・ボルトレンチ、31・・・
増幅第  2  図 第  3  図 (イジ (ロ)
Figure 1 is an overall schematic diagram of the CRD exchange device, Figure 2 is the CRD
Schematic diagram of the detachable head part, Figure 3 (a) and (b) are CRD
FIG. 4 is a diagram of the positioning state of the mounting bolt and bolt wrench, FIG. 4 is a diagram of the fitting state of the CRD mounting bolt and bolt wrench, and FIG. 5 is a diagram of the vibration detection procedure. 1... Reactor pressure vessel (RPV), 2... Reactor containment vessel (PCV), 3... Hetestal, 4... CR
D-Using, 5... Neutron measurement housing, 6
... Control rod drive mechanism (CRD), 7... Space, 8.
... Carrying in/out entrance, 9... Bracket, 10... Rail, 11... Rotating movement device, 12... CFLD exchange device, 13... CR, D attachment/detaching device, 14... CFLD
Handling device, 15... Traveling trolley, 16... Detachable head, 17... Traveling trolley, 18... Mast, 19...
Bridge, 20... Through hole, 21... CRD transport cart, 22... Lifting shaft, 23... CRD mounting/ting bolt, 24... Part of taper, 25... Sheet, 26 ...Air motor, 27...Spring, 2
9... Vibration meter, 30... Bolt wrench, 31...
Amplification Figure 2 Figure 3 (Iji (b)

Claims (1)

【特許請求の範囲】 1、旋回台車と走行台車を有し、かつ原子炉圧力容器へ
の制御棒駆動機構(以下CRDとする)の取付、取外し
を行なうCRD着脱装置と、前記着脱装置への(、RD
の受渡し及び受取りを行ない、かつ保持したCRDを横
転させるCRD取扱装置から成る、CRD交換装置にお
いて、 前記CRD着脱装置で、CR,Dを原子炉圧力容器に増
付けている、マウンティングボルト取外し時のマウンテ
インクボルト六角穴とCRD着脱装置ボルトレンチの 
合確認機構を設けたことを特徴とする、制御棒駆動機構
交換装置のボルトレンチ嵌合確認方法。
[Scope of Claims] 1. A CRD attachment/detachment device that has a rotating truck and a traveling truck and that attaches and detaches a control rod drive mechanism (hereinafter referred to as CRD) to and from a reactor pressure vessel, and a (,RD
In the CRD exchange equipment, which consists of a CRD handling device that delivers and receives the CRD and overturns the held CRD, when the mounting bolt is removed when the CR, D is added to the reactor pressure vessel in the CRD attachment/detachment device. Mountain ink bolt hexagon socket and CRD attachment/detachment device bolt wrench
A method for confirming the fit of a bolt wrench in a control rod drive mechanism replacement device, characterized by providing a fit confirmation mechanism.
JP56153618A 1981-09-30 1981-09-30 Method of confirming bolt wrench fit of control rod drive exchanging device Granted JPS5855792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56153618A JPS5855792A (en) 1981-09-30 1981-09-30 Method of confirming bolt wrench fit of control rod drive exchanging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56153618A JPS5855792A (en) 1981-09-30 1981-09-30 Method of confirming bolt wrench fit of control rod drive exchanging device

Publications (2)

Publication Number Publication Date
JPS5855792A true JPS5855792A (en) 1983-04-02
JPS6145196B2 JPS6145196B2 (en) 1986-10-07

Family

ID=15566424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56153618A Granted JPS5855792A (en) 1981-09-30 1981-09-30 Method of confirming bolt wrench fit of control rod drive exchanging device

Country Status (1)

Country Link
JP (1) JPS5855792A (en)

Also Published As

Publication number Publication date
JPS6145196B2 (en) 1986-10-07

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