JPH07104429B2 - Fuel assembly holding device with measuring line - Google Patents
Fuel assembly holding device with measuring lineInfo
- Publication number
- JPH07104429B2 JPH07104429B2 JP1338235A JP33823589A JPH07104429B2 JP H07104429 B2 JPH07104429 B2 JP H07104429B2 JP 1338235 A JP1338235 A JP 1338235A JP 33823589 A JP33823589 A JP 33823589A JP H07104429 B2 JPH07104429 B2 JP H07104429B2
- Authority
- JP
- Japan
- Prior art keywords
- extension pipe
- pipe
- outer extension
- fuel assembly
- drive unit
- 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 - Lifetime
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
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は計測ケーブルを備えた燃料集合体を保持し、上
記計測ケーブルを炉外へ導くための計測線付燃料集合体
保持装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention holds a fuel assembly equipped with a measurement cable, and a fuel assembly with a measurement line for guiding the measurement cable outside the reactor. The present invention relates to a holding device.
（従来の技術） 高速増殖炉の炉心を設計する際には、中性子照射により
炉心燃料から発生する核***生成ガス量や、炉心内を流
れる冷却材流量および燃料各部の温度を知る必要があ
る。このような炉心燃料の挙動を連続的に測定するため
には、内部に各種センサ（例えば熱電対、電磁流量計、
中性子検出器等）を装備した計測線付燃料集合体と、こ
の計測線付燃料集合体の計測ケーブルを炉外へ導くため
の装置が必要となる。(Prior Art) When designing the core of a fast breeder reactor, it is necessary to know the amount of fission product gas generated from the core fuel by neutron irradiation, the flow rate of the coolant flowing in the core, and the temperature of each part of the fuel. In order to continuously measure the behavior of such core fuel, various sensors (for example, thermocouple, electromagnetic flowmeter,
A fuel assembly with a measurement line equipped with a neutron detector, etc. and a device for guiding the measurement cable of the fuel assembly with the measurement line out of the reactor are required.
従来、計測線付燃料集合体の計測ケーブルを炉外へ導く
装置としては、特公昭59−25200号に開示されている計
測線付燃料集合体保持装置がある。この計測線付燃料集
合体保持装置は第３図〜第５図に示すように、遮蔽プラ
グ１を貫通して原子炉容器２内に挿入されたガイド管４
と、このガイド管４内に昇降可能に設けられた外側延長
管５と、この外側延長管５の内側に設けられた内側延長
管６とを有し、内側延長管６の下部には原子炉容器２内
の炉心３に装荷された計測線付燃料集合体８を保持する
ラッチ機構７が開閉自在に設けられている。Conventionally, as a device for guiding a measurement cable of a fuel assembly with a measurement line to the outside of the furnace, there is a fuel assembly holding device with a measurement line disclosed in JP-B-59-25200. As shown in FIGS. 3 to 5, this fuel assembly holding device with measurement line is provided with a guide tube 4 which penetrates the shield plug 1 and is inserted into the reactor vessel 2.
And an inner extension pipe 6 provided inside the outer extension pipe 5, and an outer extension pipe 5 provided in the guide pipe 4 so as to be able to move up and down. A reactor is provided below the inner extension pipe 6. A latch mechanism 7 for holding a fuel assembly 8 with a measuring wire loaded in the core 3 in the container 2 is provided so as to be openable and closable.
上記計測線付燃料集合体８の内部には、複数本の燃料ピ
ンが収納されているとともに熱電対、電磁流量計、中性
子検出器等の各種センサが設けられ、これら各種センサ
と接続した計測ケーブル９は内側延長管６内を通って炉
外に設置された測定器10に接続されている。そして、外
側延長管５の下部には上記計測ケーブル９を切断するカ
ッター11が設けられている。Inside the fuel assembly 8 with measuring lines, a plurality of fuel pins are housed and various sensors such as a thermocouple, an electromagnetic flowmeter, and a neutron detector are provided, and a measurement cable connected to these various sensors. Reference numeral 9 passes through the inside of the extension pipe 6 and is connected to a measuring device 10 installed outside the furnace. A cutter 11 for cutting the measurement cable 9 is provided below the outer extension pipe 5.
また、前記ガイド管４の上部には外側延長管５を昇降駆
動する駆動部12が設けられている。この駆動部12の上部
にはハンドル13が設けられており、このハンドル13でリ
ードねじ14を回転させて外側延長管５を昇降させる構成
となっている。なお、前記ガイド管４と外側延長管５お
よび外側延長管５と内側延長管６は、原子炉容器２内の
圧力バウンダリを確保するためにベローズ15,16で連結
されている。In addition, a drive unit 12 for raising and lowering the outer extension pipe 5 is provided above the guide pipe 4. A handle 13 is provided above the drive unit 12, and the handle 13 rotates the lead screw 14 to move the outer extension tube 5 up and down. The guide pipe 4 and the outer extension pipe 5 and the outer extension pipe 5 and the inner extension pipe 6 are connected by bellows 15 and 16 in order to secure a pressure boundary in the reactor vessel 2.
このように構成される計測線付燃料集合体保持装置は、
駆動部12の上部に設けられたハンドル13を操作して外側
延長管５を下降させると、外側延長管５の下部に設けら
れたカッター11が計測線付燃料集合体８の計測ケーブル
９を切断するとともに、外側延長管５の下部に設けられ
たガイド17（第５図参照）が下降し、ラッチ機構７に当
接してラッチ機構７を閉成させるので、計測ケーブル９
の切断と計測線付燃料集合体８の切り離しを１つの動作
で行なうことができる。The fuel assembly holding device with a measurement line configured in this way is
When the outer extension pipe 5 is lowered by operating the handle 13 provided on the upper part of the drive unit 12, the cutter 11 provided on the lower part of the outer extension pipe 5 cuts the measurement cable 9 of the fuel assembly 8 with the measurement line. At the same time, the guide 17 (see FIG. 5) provided at the lower portion of the outer extension pipe 5 descends and comes into contact with the latch mechanism 7 to close the latch mechanism 7, so that the measurement cable 9
Can be cut and the fuel assembly 8 with measurement lines can be cut in one operation.
ところで、従来の計測線付燃料集合体保持装置は計測線
付燃料集合体８の計測ケーブル９をカッター11で切断
し、内側延長管６の下端から計測線付燃料集合体８を切
り離した後、新しい計測線付燃料集合体８を内側延長管
６の下端に取付ける場合、前述したようにガイド管４と
外側延長管５および外側延長管５と内側延長管６がベロ
ーズ15,16で連結されているため、ガイド管４および駆
動部12を含めた装置全体を取り外す必要がある。しか
し、装置全体を取り外すためには駆動部周辺の制御棒駆
動装置も取り外さなければならないため、計測線付燃料
集合体８の取替え作業に多大の労力と時間を要してい
た。By the way, in the conventional fuel assembly holding device with measuring line, the measuring cable 9 of the fuel assembly with measuring line 8 is cut by the cutter 11, and the fuel assembly 8 with measuring line is separated from the lower end of the inner extension pipe 6, When the new fuel assembly 8 with measuring lines is attached to the lower end of the inner extension pipe 6, the guide pipe 4, the outer extension pipe 5, and the outer extension pipe 5 and the inner extension pipe 6 are connected by the bellows 15 and 16 as described above. Therefore, it is necessary to remove the entire device including the guide tube 4 and the drive unit 12. However, in order to remove the entire device, the control rod drive device around the drive unit also has to be removed, so that replacement of the fuel assembly 8 with measurement lines requires a great deal of labor and time.
（発明が解決しようとする課題） 上述の如く、従来の計測線付燃料集合体保持装置は原子
炉圧力容器２内の圧力バウンダリを確保するために、ガ
イド管４と外側延長管５および外側延長管５と内側延長
管６がベローズ15,16で連結されていたため、計測線付
燃料集合体の取替えを行なう場合に装置全体を取り外す
必要があり、計測線付燃料集合体８の取替え作業に多大
の労力と時間を要するという問題があった。(Problems to be Solved by the Invention) As described above, in the conventional fuel assembly holding device with measuring line, in order to secure the pressure boundary in the reactor pressure vessel 2, the guide pipe 4, the outer extension pipe 5, and the outer extension pipe are provided. Since the pipe 5 and the inner extension pipe 6 were connected by the bellows 15 and 16, it is necessary to remove the entire device when replacing the fuel assembly with measurement line, which is a great deal for replacement work of the fuel assembly 8 with measurement line. There is a problem that it takes labor and time.
本発明はこのような問題点に着目してなされたもので、
その目的とするところはガイド管と外側延長管および外
側延長管と内側延長管をベローズで連結しなくても原子
炉圧力容器内の圧力バウンダリを確保でき、計測線付燃
料集合体の取替え作業を容易に行なうことのできる計測
線付燃料集合体保持装置を提供することにある。The present invention has been made focusing on such problems,
The purpose is to secure the pressure boundary in the reactor pressure vessel without connecting the guide pipe and the outer extension pipe and the outer extension pipe and the inner extension pipe with bellows, and to replace the fuel assembly with measurement line. It is an object of the present invention to provide a fuel assembly holding device with a measurement line that can be easily performed.
［発明の構成］ （課題を解決するための手段） 上記目的を達成するために第１の発明は、遮蔽プラグを
貫通して原子炉容器内に挿入されたガイド管と、このガ
イド管の内側に設けられた外側延長管と、この外側延長
管の内側に設けられた内側延長管と、前記ガイド管の上
部に設けられ前記外側延長管及び内側延長管のうちどち
らか一方を昇降駆動する駆動部と、前記外側延長管及び
内側延長管のうち前記駆動部により昇降駆動されない側
の延長管に設けられ計測線付燃料集合体を保持するラッ
チ機構と、前記外側延長管及び内側延長管のうち前記駆
動部により昇降駆動される側の延長管に設けられ前記計
測線付燃料集合体の計測ケーブルを切断するカッターと
を具備してなる計測線燃料集合体保持装置において、前
記ガイド管と外側延長管との間および前記外側延長管と
内側延長管との間に、Ｏリングを上下に配置した二重シ
ール部を設けると共に、これら二重シール部の上部シー
ル部と下部シール部との間にバックアップ用のガスシー
ル部を設けたことを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, a first invention is a guide tube that penetrates a shield plug and is inserted into a reactor vessel, and an inside of the guide tube. And an outer extension pipe provided on the outer extension pipe, an inner extension pipe provided on the inner side of the outer extension pipe, and a drive for moving up and down one of the outer extension pipe and the inner extension pipe provided on the guide pipe. Of the outer extension pipe and the inner extension pipe, a latch mechanism that is provided on the extension pipe that is not driven up and down by the drive unit to hold the fuel assembly with the measurement line, and the outer extension pipe and the inner extension pipe. A measuring line fuel assembly holding device, comprising: a cutter provided on an extension pipe that is driven up and down by the drive unit to cut a measuring cable of the fuel assembly with the measuring line, wherein the guide pipe and the outer extension tube Between the outer extension pipe and the inner extension pipe, a double seal part having O-rings arranged vertically is provided, and a backup is provided between the upper seal part and the lower seal part of these double seal parts. The gas seal portion is provided.
また、第２の発明は遮蔽プラグを貫通して原子炉容器内
に挿入されたガイド管と、、このガイド管の内側に設け
られた外側延長管と、この外側延長管の内側に設けられ
た内側延長管と、前記ガイド管の上部に設けられ前記外
側延長管及び内側延長管のうちどちらか一方を昇降駆動
する駆動部と、前記外側延長管及び内側延長管のうち前
記駆動部により昇降駆動されない側の延長管に設けられ
計測ケーブルを備えた燃料集合体を保持するラッチ機構
と、前記外側延長管及び内側延長管のうち前記駆動部に
より昇降駆動される側の延長管に設けられ前記計測ケー
ブルを切断するカッターとを具備してなる計測線付燃料
集合体保持装置において、前記ガイド管と外側延長管と
の間および前記外側延長管と内側延長管との間に、Ｏリ
ングを上下に配置した二重シール部をそれぞれ設けると
共に、これら二重シール部の上部シール部と下部シール
部との間にバックアップ用のガスシール部を設け、かつ
前記ガイド管と外側延長管との間に前記外側延長管に付
着したナトリウムを除去するナトリウムスクレパを設け
たことを特徴とするものである。A second aspect of the present invention includes a guide tube that penetrates the shield plug and is inserted into the reactor vessel, an outer extension tube provided inside the guide tube, and an inner extension tube provided inside the outer extension tube. An inner extension pipe, a driving unit that is provided above the guide pipe, and vertically drives one of the outer extension pipe and the inner extension pipe; and a vertically driving unit that drives the outer extension pipe and the inner extension pipe. The latch mechanism provided on the extension pipe on the side not held to hold the fuel assembly provided with the measurement cable, and the measurement provided on the extension pipe on the side of the outer extension pipe and the inner extension pipe which is driven up and down by the drive unit. In a fuel assembly holding device with a measuring wire, which comprises a cutter for cutting a cable, an O-ring is vertically arranged between the guide pipe and the outer extension pipe and between the outer extension pipe and the inner extension pipe. Placement And a double gas seal portion for backup, and a gas seal portion for backup between the upper seal portion and the lower seal portion of these double seal portions, and the outer side between the guide pipe and the outer extension pipe. It is characterized in that a sodium scraper for removing sodium adhering to the extension tube is provided.
（作 用） 第１の本発明においては、原子炉容器内の圧力バウンダ
リを、ガイド管と外側延長管との間および外側延長管と
内側延長管との間に設けられた二重シール部によって確
保できるため、外側延長管および内側延長管のみを原子
炉容器内から引き抜くことができ、計測線付燃料集合体
の取替え作業を容易に行なうことができる。また、二重
シール部の上部シール部と下部シール部との間には、バ
ックアップ用のガスシール部が設けられているため、Ｏ
リングの破損等により二重シール部のシール機能が喪失
した場合でも原子炉圧力容器内の圧力バウンダリを確保
できる。(Operation) In the first aspect of the present invention, the pressure boundary in the reactor vessel is provided by the double seal portion provided between the guide pipe and the outer extension pipe and between the outer extension pipe and the inner extension pipe. Since it can be ensured, only the outer extension pipe and the inner extension pipe can be pulled out from the reactor vessel, and the work of replacing the fuel assembly with the measurement line can be easily performed. Further, since a backup gas seal portion is provided between the upper seal portion and the lower seal portion of the double seal portion, O
Even if the sealing function of the double seal part is lost due to damage to the ring, the pressure boundary inside the reactor pressure vessel can be secured.
第２の本発明はガイド管と外側延長管との間にナトリウ
ムスクレパが設けてあるので、第１の発明の同様に計測
線付燃料集合体の取替え作業を容易に行なうことができ
ると共に、外側延長管に付着したナトリウムをナトリウ
ムスクレパで除去することができる。In the second aspect of the present invention, since the sodium scraper is provided between the guide pipe and the outer extension pipe, it is possible to easily perform the replacement work of the fuel assembly with the measurement line as in the first aspect of the invention. Sodium attached to the outer extension tube can be removed with sodium scraper.
（実施例） 以下、本発明の一実施例を第１図及び第２図を参照して
説明する。なお、第３図〜第５図に示したものと同一部
分には同一符号を付し、その部分の説明は省略する。(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The same parts as those shown in FIGS. 3 to 5 are designated by the same reference numerals, and the description thereof will be omitted.
第１図において、ガイド管４と外側延長管５との間およ
び外側延長管５と内側延長管６との間には、二重シール
部18,19が設けられている。これらの二重シール部18,19
は第２図に示すように、それぞれＯリング20,21を上下
に配置して構成されており、上側に配置されたＯリング
（上部シール部）20と下側に配置されたＯリング（下部
シール部）21との間には、環状溝からなるガスシール部
22,23が設けられている。これらのガスシール部22,23に
は窒素ガス等のシールガスが原子炉容器内の圧力より高
い圧力で供給されており、二重シール部18,19のバック
アップ用として設けられている。In FIG. 1, double seal portions 18 and 19 are provided between the guide pipe 4 and the outer extension pipe 5 and between the outer extension pipe 5 and the inner extension pipe 6. These double seals 18,19
As shown in FIG. 2, the O-rings 20 and 21 are arranged one above the other, and the O-ring (upper seal part) 20 arranged on the upper side and the O-ring (lower part) arranged on the lower side. Gas seal part consisting of an annular groove between
22,23 are provided. A seal gas such as nitrogen gas is supplied to these gas seal portions 22 and 23 at a pressure higher than the pressure inside the reactor vessel, and is provided as a backup for the double seal portions 18 and 19.
また、前記ガイド管４と外側延長管５との間の下部位置
にはナトリウムスクレパ24が設けられている。このナト
リウムスクレパ24は連結管25を介してガイド管４に固定
されており、外側延長管５の外面にナトリウムが蒸着す
るのを防止すると共に外側延長管５の外面に付着したナ
トリウムを外側延長管５の昇降時に除去する機能を有し
ている。A sodium scraper 24 is provided at a lower position between the guide tube 4 and the outer extension tube 5. The sodium scraper 24 is fixed to the guide pipe 4 via a connecting pipe 25 to prevent sodium from being deposited on the outer surface of the outer extension pipe 5 and to extend the sodium attached to the outer surface of the outer extension pipe 5 to the outer side. It has a function of removing the pipe 5 when moving up and down.
このように構成される計測線付燃料集合体保持装置は、
ガイド管４と外側延長管５との間および外側延長管５と
内側延長管６との間にＯリング20,21を上下に配置した
二重シール部18,19が設けられているため、これらの二
重シール部18,19によって原子炉圧力容器内の圧力バウ
ンダリを確保できる。したがって、従来のようにガイド
管４と外側延長管５および外側延長管５と内側延長管６
をベローズで連結しなくても原子炉圧力容器内の圧力バ
ウンダリを確保でき、外側延長管５および内側延長管６
のみを原子炉圧力容器内から引き抜くことができるの
で、計測線付燃料集合体８の取替え作業を容易に行なう
ことができる。また、二重シール部18,19の上部シール
部20と下部シール部21との間には、バックアップ用のガ
スシール部22,23が設けられているので、Ｏリングの劣
化、破損等により二重シール部18,19のシール機能が低
下した場合でもガスシール部22,23によって原子炉圧力
容器内の圧力がバウンダリを確保でき、原子炉の安全性
及び健全性向上を図ることができる。The fuel assembly holding device with a measurement line configured in this way is
Since the double seal parts 18 and 19 in which the O-rings 20 and 21 are arranged vertically are provided between the guide pipe 4 and the outer extension pipe 5 and between the outer extension pipe 5 and the inner extension pipe 6, respectively. The double seal portions 18 and 19 can secure the pressure boundary in the reactor pressure vessel. Therefore, the guide pipe 4, the outer extension pipe 5, and the outer extension pipe 5 and the inner extension pipe 6 as in the prior art.
The pressure boundary inside the reactor pressure vessel can be secured without connecting the bellows to the outer extension pipe 5 and the inner extension pipe 6.
Since only the fuel assembly 8 can be pulled out from the reactor pressure vessel, the fuel assembly 8 with measurement lines can be easily replaced. Further, since the backup gas seal portions 22 and 23 are provided between the upper seal portion 20 and the lower seal portion 21 of the double seal portions 18 and 19, the O-rings may be deteriorated or damaged due to damage or the like. Even if the sealing function of the heavy seal portions 18 and 19 deteriorates, the gas seal portions 22 and 23 can secure the boundary of the pressure in the reactor pressure vessel, and the safety and soundness of the reactor can be improved.
さらに、本実施例ではガイド管４と外側延長管５との間
にナトリウムスクレパ24が設けられているため、外側延
長管５に付着しなナトリウムをナトリウムスクレパ24に
よって除去することができる。したがって、外側延長管
５および内側延長管６を原子炉容器内から引抜く際に、
ナトリウムによって外側延長管５がガイド管４に固着す
るようなことがなく、外側延長管５および内側延長管６
を原子炉容器内から容易に引き抜くことができる。Further, in this embodiment, since the sodium scraper 24 is provided between the guide pipe 4 and the outer extension pipe 5, sodium that does not adhere to the outer extension pipe 5 can be removed by the sodium scraper 24. Therefore, when pulling out the outer extension pipe 5 and the inner extension pipe 6 from the inside of the reactor vessel,
The outer extension pipe 5 and the inner extension pipe 6 are prevented from being fixed to the guide pipe 4 by sodium.
Can be easily withdrawn from the reactor vessel.
なお、上記実施例では計測線付燃料集合体８の計測ケー
ブル９を切断するカッター11を外側延長管５に設けてい
るが、カッター11を内側延長管６に設け、計測線付燃料
集合体８を保持するラッチ機構７を外側延長管５に取り
付けてもよい。ただし、その場合には内側延長管６が昇
降駆動される構成となる。In the above embodiment, the cutter 11 for cutting the measurement cable 9 of the fuel assembly 8 with measurement lines is provided on the outer extension pipe 5, but the cutter 11 is provided on the inner extension pipe 6 to provide the fuel assembly 8 with measurement line. The latch mechanism 7 for holding the above may be attached to the outer extension pipe 5. However, in that case, the inner extension pipe 6 is configured to be vertically driven.
［発明の効果］ 以上説明したように第１の本発明は、ガイド管と外側延
長管および外側延長管と内側延長管をベローズで連結し
なくても原子炉圧力容器内の圧力バウンダリを確保で
き、計測線付燃料集合体の取替え作業を容易に行なうこ
とができる。しかも、二重シール部のシール機能が低下
した場合でもガスシール部によって原子炉圧力容器内の
圧力バウンダリを確保でき、原子炉の安全性及び健全性
向上を図ることができる。[Effects of the Invention] As described above, the first aspect of the present invention can secure the pressure boundary in the reactor pressure vessel without connecting the guide pipe and the outer extension pipe and the bellows to the outer extension pipe and the inner extension pipe. It is possible to easily replace the fuel assembly with the measurement line. Moreover, even if the sealing function of the double seal portion is deteriorated, the gas seal portion can secure the pressure boundary in the reactor pressure vessel, and the safety and soundness of the reactor can be improved.
また、第２の本発明は第１の発明と同様に計測線付燃料
集合体の取替え作業を容易に行なうことができるととも
に、外側延長管に付着したナトリウムをナトリウムスク
レパによって除去することができる。Further, in the second aspect of the invention, like the first aspect of the invention, the fuel assembly with measurement line can be easily replaced, and the sodium adhering to the outer extension pipe can be removed by the sodium scraper. .
第１図は本発明の一実施例を示す計測線付燃料集合体保
持装置の断面図、第２図はその要部を示す図、第３図〜
第５図は従来の計測線付燃料集合体保持装置を示す図で
ある。 １……遮蔽プラグ、２……原子炉容器、３……炉心、４
……ガイド管、５……外側延長管、６……内側延長管、
７……ラッチ機構、８……計測線付燃料集合体、９……
計測ケーブル、11……カッター、12……駆動部、18,19
……二重シール部、20……Ｏリング（上部シール部）、
21……Ｏリング（下部シール部）、22,23……ガスシー
ル部、24……ナトリウムスクレパ。FIG. 1 is a cross-sectional view of a fuel assembly holding device with a measuring line showing an embodiment of the present invention, FIG. 2 is a view showing a main part thereof, and FIGS.
FIG. 5 is a view showing a conventional fuel assembly holding device with measuring lines. 1 ... Shielding plug, 2 ... Reactor vessel, 3 ... Reactor core, 4
…… Guide tube, 5 …… Outside extension tube, 6 …… Inside extension tube,
7 ... Latch mechanism, 8 ... Fuel assembly with measurement line, 9 ...
Measuring cable, 11 …… Cutter, 12 …… Drive unit, 18,19
…… Double seal part, 20 …… O-ring (upper seal part),
21 …… O-ring (lower seal part), 22,23 …… Gas seal part, 24 …… Sodium scraper.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−98387（ＪＰ，Ａ) 特開 昭58−223091（ＪＰ，Ａ) 特開 昭58−48888（ＪＰ，Ａ) 特公 昭59−25200（ＪＰ，Ｂ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 60-98387 (JP, A) JP 58-223091 (JP, A) JP 58-48888 (JP, A) JP 59- 25200 (JP, B1)
Claims (2)
されたガイド管と、このガイド管の内側に設けられた外
側延長管と、この外側延長管の内側に設けられた内側延
長管と、前記ガイド管の上部に設けられ前記外側延長管
及び内側延長管のうちどちらか一方を昇降駆動する駆動
部と、前記外側延長管及び内側延長管のうち前記駆動部
により昇降駆動されない側の延長管に設けられ計測線付
燃料集合体を保持するラッチ機構と、前記外側延長管及
び内側延長管のうち前記駆動部により昇降駆動される側
の延長管に設けられ前記計測線付燃料集合体の計測ケー
ブルを切断するカッターとを有する計測線付燃料集合体
保持装置において、前記ガイド管と外側延長管との間お
よび前記外側延長管と内側延長管との間に、Ｏリングを
上下に配置した二重シール部を設けると共に、これら二
重シール部の上部シール部と下部シール部との間にバッ
クアップ用のガスシール部を設けたことを特徴とする計
測線付燃料集合体保持装置。1. A guide pipe that penetrates a shield plug and is inserted into a reactor vessel, an outer extension pipe provided inside the guide pipe, and an inner extension pipe provided inside the outer extension pipe. A drive unit provided above the guide pipe to drive one of the outer extension pipe and the inner extension pipe up and down, and a drive unit of the outer extension pipe and the inner extension pipe not driven up and down by the drive unit. A latch mechanism provided on the extension pipe for holding the fuel assembly with measurement line, and the fuel assembly with measurement line provided on the extension pipe of the outer extension pipe and the inner extension pipe that is driven up and down by the drive unit. In the fuel assembly holding device with a measuring wire having a cutter for cutting the measuring cable, the O-rings are vertically arranged between the guide pipe and the outer extension pipe and between the outer extension pipe and the inner extension pipe. Did two Provided with a sealing portion, the fuel assembly holding device with measurement lines, characterized in that a gas seal portion for backup between these dual seal portion upper seal portion and lower seal portion.
されたガイド管と、このガイド管の内側に設けられた外
側延長管と、この外側延長管の内側に設けられた内側延
長管と、前記ガイド管の上部に設けられ前記外側延長管
及び内側延長管のうちどちらか一方を昇降駆動する駆動
部と、前記外側延長管及び内側延長管のうち前記駆動部
により昇降駆動されない側の延長管に設けられ計測線付
燃料集合体を保持するラッチ機構と、前記外側延長管及
び内側延長管のうち前記駆動部により昇降駆動される側
の延長管に設けられ前記計測線付燃料集合体の計測ケー
ブルを切断するカッターとを有する計測線付燃料集合体
保持装置において、前記ガイド管と外側延長管との間お
よび前記外側延長管と内側延長管との間に、Ｏリングを
上下に配置した二重シール部を設けると共に、これら二
重シール部の上部シール部と下部シール部との間にバッ
クアップ用のガスシール部を設け、かつ前記ガイド管と
外側延長管との間に前記外側延長管に付着したナトリウ
ムを除去するナトリウムスクレパを設けたことを特徴と
する計測線付燃料集合体保持装置。2. A guide pipe that penetrates through a shield plug and is inserted into a reactor vessel, an outer extension pipe provided inside the guide pipe, and an inner extension pipe provided inside the outer extension pipe. A drive unit provided above the guide pipe to drive one of the outer extension pipe and the inner extension pipe up and down, and a drive unit of the outer extension pipe and the inner extension pipe not driven up and down by the drive unit. A latch mechanism provided on the extension pipe for holding the fuel assembly with measurement line, and the fuel assembly with measurement line provided on the extension pipe of the outer extension pipe and the inner extension pipe that is driven up and down by the drive unit. In the fuel assembly holding device with a measuring wire having a cutter for cutting the measuring cable, the O-rings are vertically arranged between the guide pipe and the outer extension pipe and between the outer extension pipe and the inner extension pipe. Did two In addition to providing a seal part, a backup gas seal part is provided between the upper seal part and the lower seal part of these double seal parts, and is attached to the outer extension pipe between the guide pipe and the outer extension pipe. A fuel assembly holding device with a measuring line, characterized in that a sodium scraper for removing the removed sodium is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1338235A JPH07104429B2 (en) | 1989-12-28 | 1989-12-28 | Fuel assembly holding device with measuring line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1338235A JPH07104429B2 (en) | 1989-12-28 | 1989-12-28 | Fuel assembly holding device with measuring line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03200095A JPH03200095A (en) | 1991-09-02 |
| JPH07104429B2 true JPH07104429B2 (en) | 1995-11-13 |
Family
ID=18316203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1338235A Expired - Lifetime JPH07104429B2 (en) | 1989-12-28 | 1989-12-28 | Fuel assembly holding device with measuring line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07104429B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101306406B1 (en) | 2006-06-27 | 2013-09-09 | 도레이 카부시키가이샤 | Polymer separation membrane and process for producing the same |
| RU2550340C2 (en) * | 2009-08-28 | 2015-05-10 | ТерраПауэр, ЭлЭлСи | Nuclear fission reactor, vented fuel module of nuclear fission and methods and system of said vented fuel module |
| US9269462B2 (en) | 2009-08-28 | 2016-02-23 | Terrapower, Llc | Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system |
| US8929505B2 (en) | 2009-08-28 | 2015-01-06 | Terrapower, Llc | Nuclear fission reactor, vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system |
-
1989
- 1989-12-28 JP JP1338235A patent/JPH07104429B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03200095A (en) | 1991-09-02 |
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