JPS61158571A - Facility for storing highly radioactive substance - Google Patents

Facility for storing highly radioactive substance

Info

Publication number
JPS61158571A
JPS61158571A JP27995184A JP27995184A JPS61158571A JP S61158571 A JPS61158571 A JP S61158571A JP 27995184 A JP27995184 A JP 27995184A JP 27995184 A JP27995184 A JP 27995184A JP S61158571 A JPS61158571 A JP S61158571A
Authority
JP
Japan
Prior art keywords
silo
building
cask
silos
facility
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
JP27995184A
Other languages
Japanese (ja)
Other versions
JPH0476438B2 (en
Inventor
山崎 武久
勝利 鈴木
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.)
Takenaka Komuten Co Ltd
Original Assignee
Takenaka Komuten 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 Takenaka Komuten Co Ltd filed Critical Takenaka Komuten Co Ltd
Priority to JP27995184A priority Critical patent/JPS61158571A/en
Publication of JPS61158571A publication Critical patent/JPS61158571A/en
Publication of JPH0476438B2 publication Critical patent/JPH0476438B2/ja
Granted legal-status Critical Current

Links

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】[Detailed description of the invention]

〔発明の目的〕 1 産業上の利用分骨 本発明は、原子力発電所から発生する使用済燃料やその
燃料を再処理した結果発生する高レベル放射性廃棄物等
を保管する高レベル放射性物質貯蔵施設に関する。 上記使用済燃料、高レベル放射性廃棄物等は、かなりの
放射能を有するため、プールでの水中保管やキャスク(
遮蔽密封容器)に入れて保管されるが、本発明は、特に
後者に属する。 ■ 従来の技術 キャスクは、鋼製の大型容器であり、通常、外径1.5
〜2.5 m s高さ5〜61PL s重さ90〜13
0ton程度のものであって、5〜10 tonの使用
済燃料等を収容する。収容された使用済燃料等は、20
〜50 Kw程度の崩壊熱を発生させ、その熱と放射線
の一部がキャス、り外部に現れる。従って、キャスクの
保管施設には、キャスクの冷却と放射線遮蔽が不可欠で
ある。 ところで、従来のキャスクの保管施設には、大型の天井
クレーンを備えたコンクリート建屋が用いられ、キャス
クは、床上に起立または横置き状態で配列され、建屋換
気による強制空冷方式(排気または給気ファン)で冷却
されるようになっている。 111  発明が解決しようとする問題点しかし、従来
のキャスク保管施設の場合、キャスクからの放射線に対
して建屋構造体の一部である貯蔵室周壁または外壁を厚
いコンクリート壁として放射線遮蔽性能をもたせる必要
があり、貯蔵室内に大型天井クレーンを要し、且つ、多
大な空間を要し、施設耐震上に問題があった。また、こ
れに加えて、建屋換気による強制空冷方式のため、放射
線遮蔽のための複雑な迷路形式をとる必要があり、施設
建設費の経済性や建設工期上に難があった。 本発明は、斯る従来の問題点、難点を除去しようとする
ものである。 〔発明の構成〕 1 問題点を解決するための手段 本発明は、コンクリート建屋内で、基礎床上に、キャス
クを遊挿させる放射線遮蔽性能を備えた適宜形状のサイ
ロを適宜数設け、該サイロは全体乃至上部を分離可能に
構成し、且つ、該サイロに冷却空気流通手段を講じ、ま
た、建屋内に所要の門型クレーンを装備して成る。 1 実施例 図面は、本発明に係る実施例を示している。 図において、1は、コンクリート建屋、2・・・は、該
建屋の基礎床上に配列した放射線遮蔽性能を、備えた複
数のサイロ、3は、建屋内に設けた門型クレーン、4は
、キャスク運搬車であり、A・・・は、キャスクである
。 コンクリート建屋1は、地面を少し堀り下げて格子状地
中梁11を設け(第6図)、該地中梁の間に梁元端レベ
ルよりも低く厚い床版
[Purpose of the Invention] 1. Industrial Application The present invention relates to a high-level radioactive material storage facility for storing spent fuel generated from nuclear power plants and high-level radioactive waste generated as a result of reprocessing that fuel. Regarding. The above-mentioned spent fuel, high-level radioactive waste, etc. have considerable radioactivity, so they are stored underwater in pools or in casks (
The present invention particularly belongs to the latter category. ■ Conventional technology A cask is a large container made of steel, usually with an outer diameter of 1.5
~2.5 m s Height 5-61 PL s Weight 90-13
It is approximately 0 ton and accommodates 5 to 10 ton of spent fuel, etc. The stored spent fuel, etc. is 20
It generates about 50 Kw of decay heat, and some of that heat and radiation appears outside the cast. Therefore, cask cooling and radiation shielding are essential for cask storage facilities. By the way, conventional cask storage facilities use concrete buildings equipped with large overhead cranes, and casks are arranged either upright or horizontally on the floor, and the buildings are ventilated using forced air cooling (exhaust or air supply fans). ). 111 Problems to be Solved by the Invention However, in the case of conventional cask storage facilities, it is necessary to make the storage room peripheral wall or outer wall, which is part of the building structure, a thick concrete wall to provide radiation shielding performance against radiation from the casks. This required a large overhead crane inside the storage room and a large amount of space, which caused problems in terms of earthquake resistance of the facility. In addition, since the building was forced to be air-cooled through ventilation, it was necessary to construct a complicated labyrinth for radiation shielding, which caused problems in terms of economical construction costs and construction schedule. The present invention attempts to eliminate these conventional problems and difficulties. [Structure of the Invention] 1. Means for Solving the Problems The present invention provides an appropriate number of silos of an appropriate shape with radiation shielding performance in which casks are loosely inserted on the foundation floor in a concrete building, and the silos are The entire silo and its upper part are separable, and the silo is equipped with means for circulating cooling air, and the necessary gate-type crane is installed in the building. 1 Embodiment The drawings show an embodiment according to the present invention. In the figure, 1 is a concrete building, 2... are a plurality of silos with radiation shielding performance arranged on the foundation floor of the building, 3 is a portal crane installed in the building, and 4 is a cask. It is a transport vehicle, and A... is a cask. In the concrete building 1, the ground is dug down a little and lattice-shaped underground beams 11 are installed (Fig. 6), and thick floor slabs are installed between the underground beams and are lower than the base end level of the beams.

【2を設け、また、中央部に縦貫
させて通路用の上部床13を設けると共に、これに対応
させて外壁14に出入口18を設け、外壁14の下部適
所に適数の空気取入口15・・・を配し、屋根16の中
央部に迷路形式の簡単な排気口17を設けている。なお
、排気口部分は、放射線遮蔽のため厚くするとよい。ま
た、該部に排気モニターを装備させるとよい。 第2図中、19は、建屋内に設けた控室である。 また、31は、門型クレーン3のレールである。 サイロ2・・・は、コンクリートで適宜厚さの円筒形に
形成して、下半部21・・・を上記地中梁110間で床
版12上に一体に突設し、該下半部の上に上半部22・
・・を着脱自在に重合連係させている。また、下端にお
いて、地中梁の間の空室11a・・・に位置させて複数
の空気流入口23・・・を形成し、上端に内向き7ラン
ジ24・・・を形成している。更に、上端面即ち上半部
22・・・の上面に複数の吊環25・・・を配設し、下
半部21・・・の上端内縁に複数のキャスク支持金物2
6・・・を着脱自在に配設している。なお、サイロは、
円筒形に限るものではなく、多角形その他適宜である。 また、全体または上端部、或いは、これらの近傍で分離
可能としてもよい。 地中梁1】の間の空室11a・・・の上部にグレーチン
グllb・・・を設けるとよい。 iil  作用 如上の構成であり、キャスクA・・・の収納に当っては
、キャスクを1個宛キャスク運搬車4により建屋1内に
搬入し、これを門型クレーン3により起立状態でサイロ
2・・・内へ挿入するが、この際、サイロの上半部22
・・・を、吊環25・・・を以て門型クレーン3により
一旦取り外し、キャスクを挿入して床版12上に載置し
た後、再びサイロ上半部22・・・を下半部21・・・
上端に着座させる。 斯様に収納されると、キャスクA・・・は、発熱により
周囲に上昇気流を生じさせて、サイロ2・・・内に煙突
に見られる自然通風が発生する。そして、これが基とな
って、建屋1の内外において対流作用が生ずる。つまり
、外気が建屋1の空気取入口15・・・から建屋内に流
入し、地中梁1】の間の空室11a・・・からサイロ下
部の空気流入口23・・・を経て、サイロ2・・・内を
高速度で通り抜け、更に上昇して排気口17から建屋外
へ排出される。従って、サイロ2・・・内のキャスクA
・・・は、効率よく自然空冷される。 キャスクA・・・から放出される放射線は、前述のよう
に一部分であるが、該放射線は、主として直進性の強い
T線である。この放射線は、サイロ2・・・に到達する
−と熱に変り、サイロの周辺へはほとんど洩れ出ない。 サイロの上面からはわずかながら放射線が洩れるが、こ
れは上昇して排気口17及びその周辺で熱に変り、建屋
外部へ洩れ出ることはない。なお、サイロ2・・・は、
キャスクA・・・からの輻射熱でも温度上昇するが、こ
れは、建屋1内の対流作用を助長する。 サイロ下部の空気流入口23・・・は、地中梁11の間
の空室11a・・・内で開口するので、該空気流入口2
3・・・からサイロ周辺へ放射線が洩れることはなく、
作業員が周囲にいても害を及ぼすことはない。 なお、サイロ2・・・は、比較的大きなものに形成して
、複数のキャスクA・・・を収容できるようにしてもよ
い。 〔発明の効果〕 本発明によれば、サイロにより煙突で見られる自然通風
を得ることができて、頗る効率の高い自然冷却が得られ
、サイロの放射線遮蔽性能により建屋の構造を極めて簡
素化でき、外壁等は薄い一般的なものにでき、また、サ
イロは全体乃至上部を分離できるので、重いキャスクを
大きく上げ下げする必要がなくてクレーンを簡単なもの
にでき、建屋の内部空間を小さくでき、強制空冷のため
の複雑な迷路形式をとる必要がなく、全体構造をコンパ
クトにでき、建設費、建設工期を大幅に低減できる。そ
して、施設耐震上の問題点を簡単に解決できる。 更に、サイロが全体乃至上部で分離できるので、上端の
開口を小さくすることができて、放射線の洩れを極力少
なくでき、放射線遮蔽性能を大きく向上でき、しかも、
サイロ内でキャスク支持金物・を用いることもできる。
In addition, an upper floor 13 for passage is provided vertically in the center, and correspondingly an entrance/exit 18 is provided in the outer wall 14, and an appropriate number of air intake ports 15/ ..., and a simple maze-shaped exhaust port 17 is provided in the center of the roof 16. Note that the exhaust port portion is preferably thick for radiation shielding. Additionally, it is recommended that this section be equipped with an exhaust monitor. In Fig. 2, 19 is a waiting room provided within the building. Further, 31 is a rail of the gate type crane 3. The silo 2 is formed of concrete into a cylindrical shape with an appropriate thickness, and a lower half 21 is integrally provided on the floor slab 12 between the underground beams 110. Upper half 22 on top of
... are polymerized and linked in a removable manner. Further, at the lower end, a plurality of air inlets 23 are formed in the hollow spaces 11a between the underground beams, and seven inward flange 24 are formed at the upper end. Furthermore, a plurality of hanging rings 25 are arranged on the upper end surface, that is, the upper surface of the upper half part 22..., and a plurality of cask supporting metal fittings 2 are arranged on the inner edge of the upper end of the lower half part 21...
6... are arranged in a detachable manner. In addition, the silo is
It is not limited to a cylindrical shape, but may be a polygon or other appropriate shape. Further, the entire structure, the upper end portion, or the vicinity thereof may be separable. It is preferable to provide gratings llb... above the empty spaces 11a... between the underground beams 1]. This is the configuration as described above, and when storing casks A..., each cask is transported into the building 1 by the cask transport vehicle 4, and then transported to the silo 2 in an upright position by the portal crane 3. ...Insert it inside, but at this time, the upper half 22 of the silo
... are once removed by the portal crane 3 using the hanging rings 25, and the cask is inserted and placed on the floor slab 12.・
Seated at the top. When stored in this manner, the cask A generates an upward air current around it due to heat generation, and natural ventilation as seen in a chimney is generated inside the silo 2. Based on this, convection occurs inside and outside the building 1. In other words, outside air flows into the building from the air intake 15 of the building 1, from the empty room 11a between the underground beams 1 and through the air inlet 23 at the bottom of the silo. 2... passes through the interior at high speed, rises further, and is discharged from the exhaust port 17 to the outside of the building. Therefore, cask A in silo 2...
... is efficiently cooled by natural air. Although only a portion of the radiation is emitted from the cask A as described above, this radiation is mainly a T-ray that travels in a straight line. This radiation turns into heat when it reaches Silo 2, and hardly leaks out to the surroundings of the silo. A small amount of radiation leaks from the top of the silo, but this rises and turns into heat in and around the exhaust port 17, and does not leak to the outside of the building. In addition, Silo 2...
The temperature also rises due to radiant heat from the casks A, which promotes convection within the building 1. The air inlet 23 at the lower part of the silo opens inside the empty chamber 11a between the underground beams 11, so the air inlet 23...
3. No radiation leaks from the silo to the surrounding area,
It poses no harm to workers in the vicinity. Note that the silos 2... may be formed to be relatively large so as to be able to accommodate a plurality of casks A.... [Effects of the Invention] According to the present invention, it is possible to obtain the natural ventilation found in a chimney using the silo, extremely efficient natural cooling can be obtained, and the structure of the building can be extremely simplified due to the radiation shielding performance of the silo. , the outer walls, etc. can be made thin and conventional, and the entire silo or the upper part can be separated, so there is no need to raise and lower heavy casks, the crane can be simplified, and the internal space of the building can be reduced. There is no need for a complicated maze format for forced air cooling, the overall structure can be made compact, and construction costs and construction time can be significantly reduced. In addition, problems related to seismic resistance of facilities can be easily resolved. Furthermore, since the entire silo can be separated from the top, the opening at the top can be made smaller, minimizing radiation leakage and greatly improving radiation shielding performance.
Cask support hardware may also be used within the silo.

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

図面は、本発明の実施例で、第1図は、裁断正面図、第
2図は、截断平面図、第3図は、第1図の要部拡大断面
図、第4図は、第3図N−Pi線の断面図、第5図は、
第3図V−V@@の断面図、第6図は、他部位の截断平
面図である。 1・・・コンクリート建屋 2・・・サイロ3°°°門
型クレーン   4・・・キャスク運搬車11・・・地
中梁      11a・・・空室11m)・・・グレ
ーチング  12・・・床版13・・・上部床    
  14・・・外壁15・・・空気取入口    16
・・・屋根17・・・排気口      18・・・出
入口19・・・控室       23・・・空気流入
口24・・−内向き7ランジ  25・・・吊環21・
・・下半部      22・・・上半部31・・φレ
ール       26・・・キャスク支持金物A・・
・キャスク 第1図 第2図 第3図 庫 版 第4図    第5図 32′
The drawings show examples of the present invention; FIG. 1 is a cutaway front view, FIG. 2 is a cutaway plan view, FIG. 3 is an enlarged sectional view of the main part of FIG. 1, and FIG. A cross-sectional view taken along the line N-Pi, FIG.
FIG. 3 is a sectional view taken along the line V-V@@, and FIG. 6 is a cutaway plan view of other parts. 1... Concrete building 2... Silo 3°°° Gate type crane 4... Cask carrier 11... Underground beam 11a... Vacant room 11m)... Grating 12... Floor slab 13... Upper floor
14...Outer wall 15...Air intake 16
... Roof 17 ... Exhaust port 18 ... Doorway 19 ... Waiting room 23 ... Air inlet 24 ... - Inward 7 lunge 25 ... Suspension ring 21.
...Lower half 22...Upper half 31...φ rail 26...Cask support hardware A...
・Cask Figure 1 Figure 2 Figure 3 Archives Edition Figure 4 Figure 5 32'

Claims (1)

【特許請求の範囲】[Claims] 建屋内で、基礎床上に、キヤスクを遊挿させる放射線遮
蔽性能を備えた適宜形状のサイロを適宜数設け、該サイ
ロは全体乃至上部を分離可能に構成し、且つ、該サイロ
に冷却空気流通手段を講じたことを特徴とする高レベル
放射性物質貯蔵施設。
Inside the building, on the foundation floor, an appropriate number of silos of an appropriate shape with radiation shielding performance for loosely inserting casks are installed, and the silos are constructed so that the whole or the upper part can be separated, and the silos are provided with cooling air circulation means. A high-level radioactive material storage facility characterized by the following measures taken.
JP27995184A 1984-12-28 1984-12-28 Facility for storing highly radioactive substance Granted JPS61158571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27995184A JPS61158571A (en) 1984-12-28 1984-12-28 Facility for storing highly radioactive substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27995184A JPS61158571A (en) 1984-12-28 1984-12-28 Facility for storing highly radioactive substance

Publications (2)

Publication Number Publication Date
JPS61158571A true JPS61158571A (en) 1986-07-18
JPH0476438B2 JPH0476438B2 (en) 1992-12-03

Family

ID=17618195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27995184A Granted JPS61158571A (en) 1984-12-28 1984-12-28 Facility for storing highly radioactive substance

Country Status (1)

Country Link
JP (1) JPS61158571A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008538140A (en) * 2005-03-25 2008-10-09 ホルテック・インターナショナル・インコーポレーテッド System and method for storing high-level waste
JP2019117149A (en) * 2017-12-27 2019-07-18 三菱重工業株式会社 Method for storing casks and radioactive material storage facility
WO2024024430A1 (en) * 2022-07-28 2024-02-01 三菱重工業株式会社 Hydrogen production equipment and method for operating hydrogen production equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576100U (en) * 1980-06-11 1982-01-12
JPS5716400A (en) * 1980-03-27 1982-01-27 Gen Puuru Re Tekuniku Nuubueru Shielding material for packing radioactive effluent
JPS5863895A (en) * 1981-10-12 1983-04-15 三菱マテリアル株式会社 Dry type storage method of radioactive material and the like
JPS58135496A (en) * 1981-11-06 1983-08-12 ドイツチエ・ゲゼルシヤフト・フユ−ル・ヴイ−ダ−アウフアルバイツンク・フオン・ケルンブレンシユトツフエン・ミツト・ベシユレンクテル・ハフツング Concrete protection casing for storing nuclear fuel element container

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242726A (en) * 1975-10-01 1977-04-02 Fuji Photo Film Co Ltd Photographic magenta color forming coupler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5716400A (en) * 1980-03-27 1982-01-27 Gen Puuru Re Tekuniku Nuubueru Shielding material for packing radioactive effluent
JPS576100U (en) * 1980-06-11 1982-01-12
JPS5863895A (en) * 1981-10-12 1983-04-15 三菱マテリアル株式会社 Dry type storage method of radioactive material and the like
JPS58135496A (en) * 1981-11-06 1983-08-12 ドイツチエ・ゲゼルシヤフト・フユ−ル・ヴイ−ダ−アウフアルバイツンク・フオン・ケルンブレンシユトツフエン・ミツト・ベシユレンクテル・ハフツング Concrete protection casing for storing nuclear fuel element container

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008538140A (en) * 2005-03-25 2008-10-09 ホルテック・インターナショナル・インコーポレーテッド System and method for storing high-level waste
JP2019117149A (en) * 2017-12-27 2019-07-18 三菱重工業株式会社 Method for storing casks and radioactive material storage facility
WO2024024430A1 (en) * 2022-07-28 2024-02-01 三菱重工業株式会社 Hydrogen production equipment and method for operating hydrogen production equipment

Also Published As

Publication number Publication date
JPH0476438B2 (en) 1992-12-03

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