JPH0639360Y2 - Storage pit of radioactive material storage facility - Google Patents
Storage pit of radioactive material storage facilityInfo
- Publication number
- JPH0639360Y2 JPH0639360Y2 JP1984166068U JP16606884U JPH0639360Y2 JP H0639360 Y2 JPH0639360 Y2 JP H0639360Y2 JP 1984166068 U JP1984166068 U JP 1984166068U JP 16606884 U JP16606884 U JP 16606884U JP H0639360 Y2 JPH0639360 Y2 JP H0639360Y2
- Authority
- JP
- Japan
- Prior art keywords
- pit
- storage
- pipe
- radiation
- canister
- 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
- 239000012857 radioactive material Substances 0.000 title description 6
- 230000005855 radiation Effects 0.000 claims description 40
- 239000011810 insulating material Substances 0.000 claims description 24
- 230000020169 heat generation Effects 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 239000000941 radioactive substance Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 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
- Building Environments (AREA)
Description
【考案の詳細な説明】 「産業上の利用分野」 本考案は、放射性物質貯蔵施設の貯蔵ピットに係るもの
である。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a storage pit of a radioactive material storage facility.
「従来の技術と考案が解決しようとする課題」 第１図に示すように、キャニスタ（放射性物質の缶詰）
を貯蔵する放射性物質貯蔵施設は、通常、下部が多数の
貯蔵ピットAa……を配列した放射性物質貯蔵ピット室
Ａ、上部がオペレーティングフロアーＢとなっており、
両者間が貯蔵ピット上部床Ｃで上下に仕切られている。
この貯蔵ピット上部床は、各貯蔵ピットAa……内へ上方
からキャニスタを差入れるための多数のマンホールCa…
…を蜂巣状に有し、これらのマンホールにプラグＤ……
を着脱自在に嵌挿している。なお、上記構成の躯体は、
放射線遮蔽性能を有する鉄筋コンクリート構造であり、
ピット室Ａが地下に、オペレーティングフロアーＢが地
上に設けられる。"Problems to be solved by conventional technology and device" As shown in Fig. 1, canister (canned radioactive material)
In the radioactive material storage facility that stores, the lower part is usually a radioactive material storage pit room A in which a number of storage pits Aa are arranged, and the upper part is an operating floor B.
The space between the two is divided into upper and lower parts by a floor C above the storage pit.
The upper floor of this storage pit has many manholes Ca for inserting canisters from above into each storage pit Aa ....
... has a honeycomb shape and plugs into these manholes D ...
Is removably inserted. In addition, the structure of the above structure,
It is a reinforced concrete structure with radiation shielding performance,
The pit room A is located underground and the operating floor B is located above ground.
而して、キャニスタは、上記貯蔵ピットAa……内に収納
されるが、このキャニスタからは多量の放射線を発する
ので、キャニスタ及び周辺が放射線による発熱を生じ、
従って、これを冷却する必要がある。この冷却手段とし
ては、主として通風冷却手段がとられており、オペレー
ティングフロアーＢからピット室Ａの下部に冷却空気を
導入し、これを貯蔵ピットAa……に上昇通過させ、ピッ
ト室外へと排出させるようになっている。Thus, the canister is housed in the storage pit Aa .. However, since the canister emits a large amount of radiation, the canister and its surroundings generate heat due to the radiation,
Therefore, it needs to be cooled. Ventilation cooling means is mainly used as this cooling means, and cooling air is introduced from the operating floor B to the lower part of the pit room A, and is allowed to pass through the storage pits Aa ... And discharged outside the pit room. It is like this.
しかし、この通風型貯蔵ピットAaは、通常、鋼製のピッ
ト管で構成されるため、第６図に示すように、キャニス
タＸ……からの放射線及び発熱が貯蔵ピットAaを透過し
て、貯蔵ピットの裏側の空間Abに至り、従って、貯蔵ピ
ット自体及び裏側空間Abが高温となり、該空間内で熱の
対流乃至滞留を生ずる。つまり、熱の横滑りを生ずるの
であり、その結果、貯蔵ピット内の上昇気流が少なくな
り、冷却効率が甚だ悪くなっている。However, since this ventilation type storage pit Aa is usually composed of a steel pit pipe, as shown in FIG. 6, radiation and heat generation from the canisters X ... The space Ab on the back side of the pit is reached, so that the storage pit itself and the back side space Ab become high temperature, and convection or retention of heat occurs in the space. In other words, heat causes skidling, and as a result, the ascending airflow in the storage pit is reduced, and the cooling efficiency is greatly deteriorated.
また、第６図には表してないが、実際には、キャニスタ
Ｘ……を貯蔵ピットAa内の中心に位置させることは難し
く、これが上記熱の横滑りを更に増加させ、かつ、上昇
気流の流通を阻害し、これらが互いに原因となり結果と
なりして、冷却効率を一層悪くしている。Also, although not shown in FIG. 6, it is actually difficult to position the canister X in the center of the storage pit Aa, which further increases the side skid of the heat and the flow of the upward air stream. Which results in a mutual cause of the above, and further deteriorates the cooling efficiency.
近年、そのような熱の悪影響の防止と放射線の遮蔽を目
的として、通風型貯蔵ピットを、高密度アスベスト・セ
メントのスリーブを管方向に連結して形成することが、
フランス国のソシエテ・ジェネラル・プール・レ・テク
ニク・ヌーヴェル・エス・ジー・エヌ及びエヴエリチュ
ーブから提案されている（特開昭57-16400号公報）。In recent years, for the purpose of preventing such adverse effects of heat and shielding of radiation, it is possible to form a ventilation type storage pit by connecting a sleeve of high-density asbestos cement in the pipe direction.
It has been proposed by Societe Generale Pour Les Technik Nouvelle S.G.N. and Evellitube in France (JP-A-57-16400).
しかし、このような高密度アスベスト・セメント・スリ
ーブの連結による貯蔵ピットでは、構造耐力上未だ問題
がある。特に、地震に対する耐震性が低く、厳格な貯蔵
管理、十分な安全性を要する放射性物質貯蔵施設として
は適確性を欠如するものである。However, such a storage pit formed by connecting high-density asbestos-cement sleeves still has a problem in terms of structural strength. In particular, it is not suitable as a radioactive material storage facility that has low earthquake resistance and requires strict storage management and sufficient safety.
ところで、この場合、貯蔵ピットの内側に放射状に案内
翼を配して、内挿するキャニスタをピット中心位置に保
持するようにすることは可能である。By the way, in this case, it is possible to dispose the guide vanes radially inside the storage pit so as to hold the inserted canister at the center position of the pit.
しかし、実際に、このような案内翼をアスベスト・セメ
ントのスリーブ内に適確に設けることは容易でない。仮
に同材質で成形し付設し得たにせよキャニスタの出し入
れに伴い損傷するおそれがあり、思わしくない。However, in practice, it is not easy to properly install such a guide vane in a sleeve of asbestos cement. Even if it was possible to attach it even if it was molded from the same material, it could be damaged when the canister is taken in and out, which is not desirable.
本考案は、これらのことを考慮し、簡単な構造で、貯蔵
ピットに十分な断熱性、放射線遮蔽性能をもたせるとと
もに、十分な耐震性、構造耐力をもたせ、かつ、キャニ
スタのピット中心位置への内装を可能にして、従来の問
題点を解決しようとするものである。In consideration of these points, the present invention provides a storage pit with sufficient heat insulation and radiation shielding performance, as well as with sufficient earthquake resistance and structural proof, with a simple structure, and at the center of the pit of the canister. The purpose is to enable interior decoration and solve the conventional problems.
「課題を解決するための手段」 上記目的達成のため、本考案は、通風型貯蔵ピットAaを
構成するピット管１であって貯蔵ピットとしての所要の
力学的強度を保有しかつ比較的放射線吸収による発熱密
度の高いピット管１の内面、外面のいずれか一方乃至双
方に、比較的放射線吸収による発熱密度の低いかつ断熱
効果をもった放射線遮蔽・断熱材２を付設し、また、ピ
ット管１の内面から、遊挿するキャニスタＸ……を管中
心に位置させる適数の支持片３を突設したことを特徴と
する。[Means for Solving the Problems] In order to achieve the above object, the present invention is a pit pipe 1 constituting a ventilation type storage pit Aa, which has a required mechanical strength as a storage pit and relatively absorbs radiation. A radiation shielding / insulating material 2 having a relatively low heat generation density due to absorption of radiation and having a heat insulating effect is attached to one or both of the inner surface and the outer surface of the pit tube 1 having a high heat generation density. It is characterized in that a proper number of support pieces 3 for projecting the canisters X to be inserted in the center of the pipe are provided from the inner surface of the above.
「作用」 如上の構成であるから、ピット管１が貯蔵ピットAaの構
造耐力、耐震性を確保するとともに、第５図に示すよう
に、放射線遮蔽・断熱材２が収容したキャニスタＸ……
から発する放射線（主としてγ線）と輻射熱を遮断す
る。[Operation] Because of the above-mentioned configuration, the pit pipe 1 secures the structural strength and earthquake resistance of the storage pit Aa, and as shown in FIG. 5, the canister X containing the radiation shielding / insulating material 2 ...
It blocks the radiation (mainly gamma rays) and radiant heat emitted from.
また、ピット管１の内側に放射線遮蔽・断熱材２がある
ものでは、主としてその内側の放射線遮蔽・断熱材２が
キャニスタＸ……からの放射線を吸収して、該放射線遮
蔽・断熱材２が主たる発熱媒体として発熱し、ピット管
１の外側に放射線遮蔽・断熱材２があるものでは、キャ
ニスタＸ……からのかなりの放射線がピット管１を透過
するために双方が吸収して、ピット管１と放射線遮蔽・
断熱材２とが共に発熱するが、この場合、比較的放射線
吸収による発熱密度の高いピット管１が主たる発熱媒体
して高い温度に発熱する。Also, in the case where the radiation shielding / insulating material 2 is inside the pit pipe 1, the radiation shielding / insulating material 2 inside thereof mainly absorbs the radiation from the canister X. In the case where heat is generated as the main heat generating medium and the radiation shielding / insulating material 2 is provided outside the pit tube 1, a considerable amount of radiation from the canister X .. 1 and radiation shielding
The heat insulating material 2 and the heat insulating material 2 together generate heat, but in this case, the pit tube 1 having a relatively high heat generation density due to radiation absorption serves as a main heat generating medium and heats up to a high temperature.
かかる発熱で、貯蔵ピットAa内の上昇気流が増大して、
貯蔵ピットAa内に流れる冷却空気の流量が大幅に向上
し、その一方、貯蔵ピットAaの裏側空間への熱の横滑り
も大幅に少なくなり、従って、冷却効率が格段に向上す
る。Due to this heat generation, the updraft in the storage pit Aa increases,
The flow rate of the cooling air flowing in the storage pit Aa is significantly increased, while the sideslip of heat to the space behind the storage pit Aa is also significantly reduced, and therefore the cooling efficiency is significantly improved.
更に、ピット管１の内面から突出する適数の支持片３…
…は、遊挿するキャニスタＸ……を管中心に位置させ、
貯蔵ピットAa内の局部的な加熱を防ぎ、上昇気流の流通
をスムーズにする。Further, an appropriate number of supporting pieces 3 protruding from the inner surface of the pit pipe 1 ...
... is the canister X to be inserted loosely located in the center of the tube,
Prevents localized heating in the storage pit Aa and smoothes the flow of updrafts.
「実施例」 その1. 第２図、第３図は、第１の実施例を示している。"Embodiment" Part 1. Figs. 2 and 3 show the first embodiment.
この場合は、通風型貯蔵ピットAaを構成する鋼製のピッ
ト管１の外面に、放射線遮蔽・断熱材２を貼着し、ま
た、そのピット管の内面四方から、遊挿するキャニスタ
Ｘ……を管中心に位置させる４条の鋼製の支持片３……
を溶接にて突設している。In this case, the radiation shielding / heat insulating material 2 is attached to the outer surface of the steel pit pipe 1 which constitutes the ventilation type storage pit Aa, and the canister X is loosely inserted from the four inner surfaces of the pit pipe. 4 steel support pieces to position the center of the pipe 3 ……
Are projected by welding.
放射線遮蔽・断熱材２には、例えば、ヒューム管を用
い、半割りにして両側から嵌め込む。For example, a fume tube is used as the radiation shield / heat insulating material 2 and is halved and fitted from both sides.
支持片３……は、各条一連となっているが、分断された
ものであってもよい。The supporting piece 3 ... Is a series of each strip, but may be divided.
図において、Ｅは、断熱材、Ｆは、断熱材による中蓋、
Ｇは、キャニスタ受けである。In the figure, E is a heat insulating material, F is an inner lid made of a heat insulating material,
G is a canister receiver.
その2. 第４図は、第２の実施例を示している。Part 2. FIG. 4 shows the second embodiment.
この場合は、放射線遮蔽・断熱材２をピット管１の内面
に貼着している。そのため、ピット管１の径を大きく
し、支持片３……の幅を広くしており、また、放射線遮
蔽・断熱材２は、ヒューム管等を四つ割りにして装着し
ている。その他は、前例とほぼ同じである。In this case, the radiation shielding / heat insulating material 2 is attached to the inner surface of the pit pipe 1. Therefore, the diameter of the pit pipe 1 is increased, the width of the support pieces 3 is widened, and the radiation shielding / heat insulating material 2 is attached by dividing the fume pipe into four parts. Others are almost the same as the previous example.
「考案の効果」 本考案によれば、通風型貯蔵ピットAaを構成するピット
管１であって貯蔵ピットとしての所要の力学的強度を保
有しかつ比較的放射線吸収による発熱密度の高いピット
管１の内面、外面のいずれか一方乃至双方に、比較的放
射線吸収による発熱密度の低いかつ断熱効果をもった放
射線遮蔽・断熱材２を付設しているので、貯蔵ピットAa
の構造耐力、耐震性を主として鋼管等による強靱なピッ
ト管１で確保でき、かつ、収容したキャニスタＸ……か
ら発する放射線（主としてγ線）と輻射熱を主として放
射線遮蔽・断熱材２により適確に遮断できる。[Advantage of the Invention] According to the present invention, the pit pipe 1 constituting the ventilation type storage pit Aa, which has a required mechanical strength as a storage pit and has a relatively high heat generation density due to radiation absorption. Since the radiation shielding / insulating material 2 having a relatively low heat generation density due to absorption of radiation and having a heat insulating effect is attached to one or both of the inner surface and the outer surface of the storage pit Aa
The structural proof strength and seismic resistance can be secured mainly by the tough pit pipe 1 made of steel pipe, etc., and the radiation (mainly gamma rays) and radiant heat emitted from the canister X .. Can be shut off.
また、キャニスタＸ……からの放射線は、ピット管１の
内側に放射線遮蔽・断熱材２があるものでは、主として
その内側の放射線遮蔽・断熱材２に吸収されて、該放射
線遮蔽・断熱材２が主たる発熱媒体として発熱し、ピッ
ト管１の外側に放射線遮蔽・断熱材２があるものでは、
かなりの放射線がピット管１を透過するために双方に吸
収されて、ピット管１と放射線遮蔽・断熱材２とが共に
発熱するが、この場合、比較的放射線吸収による発熱密
度の高いピット管１が主たる発熱媒体して高い温度に発
熱するから、かかる発熱で、貯蔵ピットAa内の上昇気流
を増大させることができて、貯蔵ピットAa内に流れる冷
却空気の流量を大幅に向上させることができ、結果とし
て、貯蔵ピットAaの裏側の空間への熱の横滑りをも大幅
に低減させることもでき、従って、冷却効率を格段に高
めることができる。而して、周辺建屋躯体への熱的影響
を低くおさえることができ、他面、冷却排気の温度をよ
り高くでき、排熱利用効率を増大させることができる。Further, in the case where the radiation shielding / insulating material 2 is inside the pit pipe 1, the radiation from the canister X is mainly absorbed by the radiation shielding / insulating material 2 inside the pit tube 1, and the radiation shielding / insulating material 2 is absorbed. Is the main heat generating medium, and the radiation shielding / heat insulating material 2 is located outside the pit pipe 1,
Since a considerable amount of radiation passes through the pit pipe 1 and is absorbed by both, the pit pipe 1 and the radiation shielding / insulating material 2 both generate heat. In this case, the pit pipe 1 has a relatively high heat generation density due to radiation absorption. Since it is the main heat generating medium and heats up to a high temperature, it is possible to increase the updraft in the storage pit Aa by such heat generation, and it is possible to greatly improve the flow rate of the cooling air flowing in the storage pit Aa. As a result, the sideslip of heat to the space on the back side of the storage pit Aa can also be significantly reduced, and therefore, the cooling efficiency can be significantly improved. Thus, the thermal influence on the surrounding building frame can be suppressed to a low level, and on the other hand, the temperature of the cooling exhaust gas can be increased, and the exhaust heat utilization efficiency can be increased.
更に、ピット管１の内面から、遊挿するキャニスタＸ…
…を管中心に位置させる適数の支持片３……を突設して
いるので、キャニスタＸ……を貯蔵ピットAa内の中心位
置に偏りなく保持できるから、貯蔵ピットAa内が局部的
に高く加熱されることもなければ、上昇気流の流通が阻
害されることもない。Furthermore, the canister X that is loosely inserted from the inner surface of the pit pipe 1 ...
Since the appropriate number of supporting pieces 3 for locating ... in the center of the pipe are protrudingly provided, the canister X can be held evenly in the central position in the storage pit Aa, so that the storage pit Aa is locally located. It is neither heated highly nor obstructed the circulation of the upward airflow.
加えて、ピット管１と上述の放射線遮蔽・断熱材２との
複層構造であるから、ピット管１には支障なく鋼管を使
用することができ、そして、このこととその複合性とに
より構造耐力、耐震性を一層向上させることかでき、よ
って、厳格な貯蔵管理、十分な安全性を確保できる。し
かも、この複層構造は、ピット管１と放射線遮蔽・断熱
材２とを複合させればよいので、極めて簡単で、容易に
構築できる。In addition, since the pit pipe 1 and the above-mentioned radiation shielding / heat insulating material 2 have a multi-layer structure, a steel pipe can be used for the pit pipe 1 without any trouble, and due to this and its composite structure, It is possible to further improve the proof strength and the earthquake resistance, so that strict storage control and sufficient safety can be secured. Moreover, this multi-layer structure is extremely simple and easy to construct because the pit tube 1 and the radiation shielding / heat insulating material 2 may be combined.
その上、ピット管１に鋼管を用いることにより、該ピッ
ト管に鋼製の支持片３……を溶接にて簡単に装備させる
ことができ、そして、これによりキャニスタＸ……の出
し入れにも損傷を生じない強靱なものとすることができ
る。Moreover, by using a steel pipe for the pit pipe 1, it is possible to easily equip the pit pipe with a steel support piece 3 by welding, and this also damages the canister X ... It can be made tough without causing.
第１図は、従来例を示す構成要領縦断面図、第２図は、
本考案の第１の実施例を示す縦断側面図、第３図は、同
例の要部の拡大横断平面図、第４図は、第２の実施例を
示す要部の拡大横断平面図、第５図は、本考案の説明
図、第６図は、従来例の説明図である。 Ａ……ピット室、Aa……貯蔵ピット Ｂ……オペレーティングフロアー Ｃ……貯蔵ピット上部床 Ｄ……プラグ、Ｅ……断熱材、 Ｆ……中蓋、Ｇ……キャニスタ受け Ｘ……キャニスタ、１……ピット管 ２……放射線遮蔽・断熱材FIG. 1 is a vertical cross-sectional view showing the configuration of a conventional example, and FIG.
A longitudinal side view showing a first embodiment of the present invention, FIG. 3 is an enlarged cross-sectional plan view of an essential part of the same example, and FIG. 4 is an enlarged transverse plan view of an essential part of the second embodiment. FIG. 5 is an explanatory view of the present invention, and FIG. 6 is an explanatory view of a conventional example. A ... Pit room, Aa ... Storage pit B ... Operating floor C ... Storage pit upper floor D ... Plug, E ... Insulating material, F ... Inner lid, G ... Canister holder X ... Canister, 1 ... Pit tube 2 ... Radiation shielding / heat insulating material
Claims (1)
であって貯蔵ピットとしての所要の力学的強度を保有し
かつ比較的放射線吸収による発熱密度の高いピット管１
の内面、外面のいずれか一方乃至双方に、比較的放射線
吸収による発熱密度の低いかつ断熱効果をもった放射線
遮蔽・断熱材２を付設し、また、ピット管１の内面か
ら、遊挿するキャニスタＸ…を管中心に位置させる適数
の支持片３を突設したことを特徴とする放射性物質貯蔵
施設の貯蔵ピット。1. A pit pipe 1 constituting a ventilation type storage pit Aa.
And a pit tube 1 having a required mechanical strength as a storage pit and having a relatively high heat generation density due to radiation absorption.
A radiation shielding / insulating material 2 having a relatively low heat generation density due to absorption of radiation and having a heat insulating effect is attached to one or both of the inner surface and the outer surface of the canister, and the canister is loosely inserted from the inner surface of the pit pipe 1. A storage pit of a radioactive substance storage facility, characterized in that an appropriate number of support pieces 3 for positioning X ... at the center of the pipe are provided in a protruding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984166068U JPH0639360Y2 (en) | 1984-10-31 | 1984-10-31 | Storage pit of radioactive material storage facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984166068U JPH0639360Y2 (en) | 1984-10-31 | 1984-10-31 | Storage pit of radioactive material storage facility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6180495U JPS6180495U (en) | 1986-05-28 |
| JPH0639360Y2 true JPH0639360Y2 (en) | 1994-10-12 |
Family
ID=30723905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984166068U Expired - Lifetime JPH0639360Y2 (en) | 1984-10-31 | 1984-10-31 | Storage pit of radioactive material storage facility |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639360Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10354770B2 (en) * | 2015-12-31 | 2019-07-16 | Tsinghua University | Residual heat removal ventilation system for spent fuel dry storage facility of nuclear power plant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2479542B1 (en) * | 1980-03-27 | 1987-08-07 | Tech Nles Ste Gle | NEW BARRIER MATERIALS FOR USE IN THE CONDITIONING OF RADIO-ACTIVE EFFLUENTS |
-
1984
- 1984-10-31 JP JP1984166068U patent/JPH0639360Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6180495U (en) | 1986-05-28 |
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