JPH038717B2 - - Google Patents
Info
- Publication number
- JPH038717B2 JPH038717B2 JP58079109A JP7910983A JPH038717B2 JP H038717 B2 JPH038717 B2 JP H038717B2 JP 58079109 A JP58079109 A JP 58079109A JP 7910983 A JP7910983 A JP 7910983A JP H038717 B2 JPH038717 B2 JP H038717B2
- Authority
- JP
- Japan
- Prior art keywords
- detector
- reactor
- outside
- handling mechanism
- protection tube
- 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
- 238000005259 measurement Methods 0.000 claims description 22
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
【発明の詳細な説明】
この発明は原子炉々外核計装検出器の据付・交
換及び保持のための取扱い機構に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a handling mechanism for installing, replacing, and holding a nuclear instrumentation detector outside a nuclear reactor.
原子炉における中性子束分布を原子炉の炉外か
ら測定するために原子炉々外核計装検出器を原子
炉容器の周囲に設置する必要がある。 In order to measure the neutron flux distribution in a nuclear reactor from outside the reactor, it is necessary to install nuclear instrumentation detectors outside the reactor around the reactor vessel.
この場合に検出器を測定位置に据付・交換及び
保持するための取扱い機構としては、従来、第1
図に示すものがある。すなわち、従来の検出器取
扱い機構は第1図に示すように、生体遮蔽1内に
検出器交換孔2を設ける。検出器交換孔2は生体
遮蔽1内を垂直方向に貫通し上端は原子炉キヤビ
テイー3に開口する交換孔出入口4に連通し、下
端は測定用空間5に達している。 In this case, the handling mechanism for installing, replacing, and holding the detector at the measurement position has conventionally been the first one.
There is one shown in the figure. That is, as shown in FIG. 1, the conventional detector handling mechanism provides a detector exchange hole 2 in a living body shield 1. The detector exchange hole 2 vertically penetrates the interior of the biological shield 1, and its upper end communicates with an exchange hole entrance 4 that opens into the reactor cavity 3, and its lower end reaches the measurement space 5.
検出器6は交換孔出入口4から挿入され、吊下
げロープ7で吊下げられて検出器交換孔2内を下
降して測定用空間5に達した後、測定用空間5内
にある保護筒8に挿入され、しかる後、保護筒8
は押付機構9に押され平行移動し原子炉容器11
に接近して測定位置に位置決めされ、炉心12と
対向する。このようにして炉心12からの中性子
束を計測する。検出器6の取出す場合には上記の
手順と逆の手順をたどつて行なわれる。 The detector 6 is inserted from the exchange hole entrance 4, suspended by a hanging rope 7, and descends inside the detector exchange hole 2 to reach the measurement space 5. After that, the detector 6 is inserted into the protection tube 8 in the measurement space 5. After that, the protective tube 8
is pushed by the pressing mechanism 9 and moves in parallel to the reactor vessel 11
is positioned at a measurement position close to the reactor core 12 and facing the reactor core 12. In this way, the neutron flux from the reactor core 12 is measured. When the detector 6 is to be taken out, the above procedure is reversed.
しかるにこのように構成された従来の検出器の
取扱い機構においては、検出器の据付・交換操作
は空間線量率の高い原子炉キヤビテイー3内で行
なう必要があるため作業員の被曝量が多い。また
原子炉キヤビテイーは燃料交換時には水が溜めら
れるので、したがつて燃料交換作業と検出器の据
付・交換作業とが平行作業が出来ないという欠点
がある。また検出器は吊下げて保護筒8内に収納
するため検出器正面が原子炉方向に向くように揃
向設置するための時間が多くかかり、これが作業
の遅滞の原因となつている。さらに検出器6、保
護筒8等が生体遮蔽壁中に埋め込まれた形となつ
ているためそれらの補修がきわめて困難であると
いう問題が残つている。 However, in the conventional detector handling mechanism configured in this manner, the detector installation and replacement operations must be performed within the reactor cavity 3 where the air dose rate is high, resulting in a high radiation exposure for the workers. Furthermore, since water is collected in the reactor cavity during fuel exchange, there is a drawback that the fuel exchange work and the detector installation/replacement work cannot be performed in parallel. Furthermore, since the detectors are hung and housed in the protection tube 8, it takes a lot of time to align them so that the front faces of the detectors face toward the reactor, which causes work delays. Furthermore, since the detector 6, protection tube 8, etc. are embedded in the biological shielding wall, there remains the problem that repair thereof is extremely difficult.
この発明は上記の如き事情に鑑みてなされたも
のであつて、検出器の据付・交換を放射線量の低
い場所で行うことができ、したがつて、作業員の
被曝量を低減させることができ、かつ燃料交換作
業と検出器据付・交換作業とを並行して行なうこ
とができ、しかも検出器の原子炉方向への揃向設
置が容易で作業時間の短縮を図ることができ、し
かも保守の容易な原子炉々外核計装検出器の取扱
い機構を提供することを目的とするものである。 This invention was made in view of the above-mentioned circumstances, and it is possible to install and replace the detector in a place with a low radiation dose, thereby reducing the radiation exposure of workers. In addition, fuel exchange work and detector installation/replacement work can be performed in parallel, and the detectors can be easily aligned in the direction of the reactor, reducing work time and reducing maintenance costs. The purpose is to provide a mechanism for easily handling nuclear instrumentation detectors outside reactors.
この目的に対応して、この発明の原子炉々外核
計装検出器の取扱い機構は原子炉周囲の生体遮蔽
に前記生体遮蔽の外面の高位置にある交換孔出入
口から前記生体遮蔽の内面の低い位置にある測定
位置に達する検出器交換孔を形成し、前記検出器
交換孔内に配設されて検出器の移動を案内する案
内装置と、前記測定位置にあつて回転変位可能な
上端開口の前記検出器を受入れ可能な保護筒と、
前記保護筒を回転変位させて位置決めを行う位置
決め装置と及び前記保護筒を測定位置に鎖錠する
解錠可能な鎖錠装置とを備えることを特徴として
いる。 Corresponding to this purpose, the handling mechanism of the nuclear instrumentation detector outside the reactor of the present invention is such that the handling mechanism connects the biological shield around the reactor with an exchange hole inlet/outlet located at a high position on the outer surface of the biological shield to a low point on the inner surface of the biological shield. a guide device disposed in the detector exchange hole to guide movement of the detector; and an upper end opening that is rotatably displaceable at the measurement position. a protection tube capable of receiving the detector;
The present invention is characterized by comprising a positioning device that performs positioning by rotationally displacing the protection tube, and an unlockable locking device that locks the protection tube at a measurement position.
以下、この発明の詳細を一実施例を示す図面に
ついて説明する。 Hereinafter, details of the present invention will be explained with reference to the drawings showing one embodiment.
第2図、第3図及び第4図において、20は検
出器の据付・交換及び保持を行なうための検出器
取扱い機構である。検出器取扱い機構20は原子
炉容器21の周囲に配置された生体遮蔽22に検
出器交換孔23を貫通形成して備えている。 In FIGS. 2, 3, and 4, 20 is a detector handling mechanism for installing, replacing, and holding the detector. The detector handling mechanism 20 is provided with a detector exchange hole 23 formed through a biological shield 22 disposed around the reactor vessel 21 .
検出器交換孔23の上端は生体遮蔽22の外面
に形成されている交換孔出入口24に連通し、ま
た検出器交換孔23の下端部は生体遮蔽22の内
面に原子炉容器21に向かつて開口するように形
成された低位置にある測定用空間25に連通して
いる。この測定用空間25は原子炉外から測定を
する場合に検出器26を測定位置に設置するため
の場所を準備するものである。交換孔出入口24
の開放端部はコンクリートプラグ27によつて開
閉される。検出器交換孔23の内面は検出器案内
管28によつて内張りされており、また測定用空
間25は、生体遮蔽22をくり抜いた室で、この
部分の生体遮蔽壁は原子炉容器21に向かう端部
は開放されてはいるが、前記検出器案内管28に
連通し、かつ、同様に内張りされて箱体31を形
成している。測定用空間25の下端部は扉33に
よつて開閉可能である。検出器案内管28内には
長手方向に沿つて案内レール34が配設されてい
る。 The upper end of the detector exchange hole 23 communicates with an exchange hole entrance/exit 24 formed on the outer surface of the biological shield 22, and the lower end of the detector exchange hole 23 is an opening on the inner surface of the biological shield 22 toward the reactor vessel 21. It communicates with a measurement space 25 located at a low position and formed to This measurement space 25 prepares a place for installing a detector 26 at a measurement position when measuring from outside the reactor. Exchange hole entrance 24
The open end of is opened and closed by a concrete plug 27. The inner surface of the detector exchange hole 23 is lined with a detector guide tube 28, and the measurement space 25 is a chamber hollowed out of the biological shield 22, and the biological shield wall in this part faces toward the reactor vessel 21. Although the end is open, it communicates with the detector guide tube 28 and is similarly lined to form a box 31. The lower end of the measurement space 25 can be opened and closed by a door 33. A guide rail 34 is disposed inside the detector guide tube 28 along the longitudinal direction.
測定用空間25内には検出器保護筒35が位置
している。検出器保護筒35は上端部開口の筒状
体をなし検出器26を収納可能な寸度をなしてい
る。検出器保護筒35は下端部近傍において軸3
6によつて回転変位可能に取付けられており垂直
位置に回転変位して測定位置に位置し、かつ傾斜
して検出器26を受け入れ得る姿勢をとることに
なる。検出器保護筒35の内部には長手方向に沿
つて案内レール37(第2図および第3図におい
ては省略してある)が設けられている。また検出
器保護筒35の原子炉容器21に向かう側壁に窓
38が形成されている。さらに検出器保護筒35
の窓の反対側の側壁の外側にはブラケツト41が
取り付けられている。検出器26はケーブル30
に吊り下げられて自重により検出器案内管28内
を摺動して下降し得る。 A detector protection cylinder 35 is located within the measurement space 25 . The detector protection cylinder 35 is a cylindrical body with an open upper end and has a size that allows the detector 26 to be housed therein. The detector protection tube 35 is connected to the shaft 3 near the lower end.
6, it is rotatably displaceable, and is rotatably displaced to the vertical position to be located at the measurement position, and tilted to assume a posture capable of receiving the detector 26. A guide rail 37 (omitted in FIGS. 2 and 3) is provided inside the detector protection tube 35 along the longitudinal direction. Further, a window 38 is formed in the side wall of the detector protection cylinder 35 facing the reactor vessel 21 . Furthermore, the detector protection tube 35
A bracket 41 is attached to the outside of the side wall opposite the window. The detector 26 is connected to the cable 30
The detector can be suspended by itself and slide down inside the detector guide tube 28 due to its own weight.
検出器26の一方の側面には第1の鎖錠片43
が取り付けられており、また反対側の側面にはス
ペーサー44が取り付けられている。スペーサー
44は検出器案内管28内を移動する際に案内レ
ール34と係合して検出器26の向きを揃向し、
また検出器保護筒35内に収納された場合には案
内レール37と係合してその向きを揃向させる。
第1の鎖錠片43は、保護筒35が垂直の測定位
置に変位している場合に検出器保護筒35の窓3
8を通して固設されている第2の鎖錠片45と鎖
錠し、検出器26を測定位置に位置決めする。 A first lock piece 43 is provided on one side of the detector 26.
is attached, and a spacer 44 is attached to the opposite side. When the spacer 44 moves within the detector guide tube 28, it engages with the guide rail 34 to align the orientation of the detector 26,
Moreover, when it is housed in the detector protection tube 35, it engages with the guide rail 37 to align its directions.
The first lock piece 43 locks the window 3 of the detector protection tube 35 when the protection tube 35 is displaced to the vertical measurement position.
8, and the detector 26 is positioned at the measurement position.
検出器保護筒35を軸36に関して回転変位さ
せるのは押棒46によつて行なう。押棒46は生
体遮蔽22を貫通し、その先端は長孔47に係合
しているビン48を介してブラケツト41と連結
する。また押棒46の他端51は生体遮蔽22の
外側に延出し、押棒を一定の力で押し付ける機幾
(図示してないが)を備えている。 The rotational displacement of the detector protection cylinder 35 about the shaft 36 is performed by a push rod 46. The push rod 46 passes through the biological shield 22, and its tip is connected to the bracket 41 via a pin 48 that is engaged with an elongated hole 47. The other end 51 of the push rod 46 extends outside the biological shield 22 and is provided with a mechanism (not shown) for pressing the push rod with a constant force.
このように構成された検出器の取扱い機構20
を用いて検出器の据付・交換及び保持を行なう場
合の操作は次の通りである。 Detector handling mechanism 20 configured in this way
The procedures for installing, replacing, and maintaining the detector using the detector are as follows.
検出器26の据付にあつては、生体遮蔽22の
外側から遮蔽を兼ねたコンクリートプラグ27を
取除いた後、検出器26を検出器案内管28を介
して検出器保護筒35まで導く。検出器26が検
出器案内管28内を摺動下降する際には、案内レ
ール34とスペーサー44とが係合して検出器2
6の向きを揃向する。検出器26は検出器案内管
28を下降した後、検出器保護筒35内に収納さ
れる。検出器26が検出器保護筒35内に収納さ
れる際には、案内レール37とスペーサー44と
が係合して検出器26の向きを揃向する。検出器
26が検出器保護筒35内に収納された後、押棒
46を生体遮蔽22の外から押すことにより検出
器保護筒35は軸36に関して回転変位して第3
図の鎖線で示す垂直位置の測定位置に変位し、か
つこの時、第1の鎖錠片43と第2の鎖錠片45
とが窓38を介して係合して検出器26を測定位
置に位置決めする。尚、検出器の固定は、押棒4
6を生体遮蔽22外から一定の力で押し付ける機
構を備えており、この機構で以つて、固定され
る。この状態で原子炉々外放射線測定が行なわれ
る。検出器26を交換する場合には前記の据付過
程と逆の過程を辿つて行なわれる。 To install the detector 26, after removing the concrete plug 27 which also serves as a shield from the outside of the biological shield 22, the detector 26 is guided to the detector protection tube 35 via the detector guide tube 28. When the detector 26 slides down inside the detector guide tube 28, the guide rail 34 and the spacer 44 engage, and the detector 2
Align the directions of 6. After the detector 26 descends through the detector guide tube 28, it is housed in the detector protection tube 35. When the detector 26 is housed in the detector protection tube 35, the guide rail 37 and the spacer 44 engage to align the orientation of the detector 26. After the detector 26 is housed in the detector protection tube 35, by pushing the push rod 46 from outside the living body shield 22, the detector protection tube 35 is rotationally displaced about the shaft 36, and the third
The first locking piece 43 and the second locking piece 45 are displaced to the vertical measurement position shown by the chain line in the figure.
and are engaged through window 38 to position detector 26 in the measurement position. The detector is fixed using the push rod 4.
6 is provided with a mechanism that presses the biological shield 22 with a constant force from outside, and is fixed by this mechanism. In this state, radiation measurements outside the reactor are performed. When replacing the detector 26, the installation process described above is reversed.
検出器保護筒35等の保守については箱体31
を扉33において開いて行なう。 For maintenance of the detector protection tube 35, etc., please refer to the box 31.
This is done by opening the door 33.
このような原子炉々外核計装検出器の取扱い機
構においては、検出器26の据付・交換をキヤビ
テイーを使用せずに生体遮蔽壁の外側から行なう
ことができるので作業員の放射線被曝の低減を図
ることができるとともに、この検出器の据付・交
換とキヤビテイーを使用する燃料交換とを並行し
て行なうことができ、原子炉の作業を短縮し原子
炉の停止期間を短くし、原子炉の稼働時間を大き
くすることができる。また検出器26の向きを案
内レール34及び37とスペーサー44によつて
自動的に揃向することができるので正面を原子炉
方向へ設定する何らの操作を必要とすることなし
に、正確に設定することができる。しかも箱体3
1の底部を開閉可能としたときは検出器保護筒3
5その他の機器の保守が容易で故障時の対策が極
めて容易である。 In this type of handling mechanism for external nuclear instrumentation detectors, the detector 26 can be installed and replaced from outside the biological shielding wall without using the cavity, reducing radiation exposure of workers. In addition, the installation/replacement of this detector and the fuel exchange using the cavity can be done in parallel, which shortens the reactor work and shortens the reactor shutdown period. time can be increased. In addition, since the direction of the detector 26 can be automatically aligned using the guide rails 34 and 37 and the spacer 44, it can be set accurately without the need for any operation to set the front toward the reactor. can do. Moreover, the box body 3
When the bottom of 1 can be opened and closed, the detector protection tube 3
5. Maintenance of other equipment is easy, and countermeasures in case of failure are extremely easy.
第1図は従来の原子炉々外核計装検出器の取扱
い機構を示す構成説明図、第2図はこの発明の一
実施例に係わるの原子炉々外核計装検出器の取扱
い機構を示す構成説明図、第3図はこの発明の一
実施例に係わるの原子炉々外核計装検出器の取扱
い機構を示す拡大構成説明図、及び第4図はこの
発明の一実施例に係わるの原子炉々外核計装検出
器の取扱い機構を示す横断面構成説明図である。
20……検出器取扱い機構、21……原子炉容
器、23……生体遮蔽、24……検出器交換孔、
26……検出器、28……検出器案内管、33…
…扉、34……案内レール、35……検出器保護
筒、36……軸、37……案内レール、38……
窓、43……第1の鎖錠片、43……スペーサ
ー、45……第2の鎖錠片、46……押し棒。
Fig. 1 is a configuration explanatory diagram showing the handling mechanism of a conventional nuclear instrumentation detector outside the reactor, and Fig. 2 is a configuration diagram showing the handling mechanism of the nuclear instrumentation detector outside the reactor according to an embodiment of the present invention. An explanatory drawing, FIG. 3 is an enlarged configuration explanatory diagram showing a handling mechanism of a nuclear instrumentation detector outside a reactor according to an embodiment of the present invention, and FIG. 4 is an explanatory diagram of a nuclear reactor according to an embodiment of the present invention. FIG. 2 is a cross-sectional configuration explanatory diagram showing a handling mechanism of the extra-core instrumentation detector. 20...detector handling mechanism, 21...reactor vessel, 23...biological shield, 24...detector exchange hole,
26...detector, 28...detector guide tube, 33...
... Door, 34 ... Guide rail, 35 ... Detector protection tube, 36 ... Shaft, 37 ... Guide rail, 38 ...
Window, 43...first lock piece, 43...spacer, 45...second lock piece, 46...push bar.
Claims (1)
の高位置にある交換孔出入口から前記生体遮蔽の
内面の低い位置にある測定位置に達する検出器交
換孔を形成し、前記検出器交換孔内に配設されて
検出器の移動を案内する案内装置と、前記測定位
置にあつて回転変位可能な上端開口の前記検出器
を受入れ可能な保護筒と、前記保護筒を回転変位
させて位置決めを行う位置決め装置と及び前記保
護筒を測定位置に鎖錠する解錠可能な鎖錠装置と
を備えることを特徴とする原子炉々外核計装検出
器の取扱い機構。 2 前記鎖錠装置は、前記保護筒の側壁に窓が貫
通形成されており前記検出器に第1の鎖錠片が取
付けられておりかつ前記測定位置の固定位置に第
2の鎖錠片が配設されており前記第1の鎖錠片と
前記第2の鎖錠片とは前記窓を通して係合して鎖
錠するように構成されていることを特徴とする特
許請求の範囲第1項記載の原子炉々外核計装検出
器の取扱い機構。 3 前記位置決め装置は前記生体遮蔽を貫通し一
端で前記保護筒に連結し他端で前記生体遮蔽の外
側に延出している押棒で構成されたものであるこ
とを特徴とする特許請求の範囲第1項または第2
項記載の原子炉々外核計装検出器の取扱い機構。[Scope of Claims] 1. Forming a detector exchange hole in the biological shield around the reactor, which reaches from an exchange hole entrance/exit located at a high position on the outer surface of the biological shield to a measurement position located at a low position on the inner surface of the biological shield, a guide device disposed in the detector exchange hole to guide the movement of the detector; a protective tube that is at the measurement position and has an opening at an upper end that can be rotated and is capable of receiving the detector; A handling mechanism for a nuclear instrumentation detector outside a nuclear reactor, characterized by comprising a positioning device that performs positioning through rotational displacement, and an unlockable locking device that locks the protection tube at a measurement position. 2. The locking device has a window formed through the side wall of the protective cylinder, a first locking piece is attached to the detector, and a second locking piece is attached to the fixed position of the measuring position. Claim 1, wherein the first locking piece and the second locking piece are configured to engage and lock through the window. Handling mechanism of the described nuclear instrumentation detector outside the reactor. 3. The positioning device is constituted by a push rod that passes through the living body shield, is connected to the protection tube at one end, and extends outside the living body shield at the other end. 1st term or 2nd term
Handling mechanism of the nuclear instrumentation detector outside the reactor described in Section 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58079109A JPS59203997A (en) | 1983-05-06 | 1983-05-06 | Handling mechanism for nuclear instrumentation detector awayfrom reactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58079109A JPS59203997A (en) | 1983-05-06 | 1983-05-06 | Handling mechanism for nuclear instrumentation detector awayfrom reactor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59203997A JPS59203997A (en) | 1984-11-19 |
JPH038717B2 true JPH038717B2 (en) | 1991-02-06 |
Family
ID=13680730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58079109A Granted JPS59203997A (en) | 1983-05-06 | 1983-05-06 | Handling mechanism for nuclear instrumentation detector awayfrom reactor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59203997A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4842807A (en) * | 1987-03-31 | 1989-06-27 | Westinghouse Electric Corp. | Support stand for top access reactor cavity dosimetry |
US4844858A (en) * | 1987-03-31 | 1989-07-04 | Westinghouse Electric Corp. | Reactor cavity dosimetry system and method |
US5011650A (en) * | 1987-10-05 | 1991-04-30 | Westinghouse Electric Corp. | Nuclear power generating station equipment qualification apparatus |
US4876058A (en) * | 1987-10-05 | 1989-10-24 | Westinghouse Electric Corp. | Nuclear power generating station equipment qualification method and apparatus |
-
1983
- 1983-05-06 JP JP58079109A patent/JPS59203997A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS59203997A (en) | 1984-11-19 |
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