JPS5981597A - New fuel storage facility - Google Patents
New fuel storage facilityInfo
- Publication number
- JPS5981597A JPS5981597A JP57191762A JP19176282A JPS5981597A JP S5981597 A JPS5981597 A JP S5981597A JP 57191762 A JP57191762 A JP 57191762A JP 19176282 A JP19176282 A JP 19176282A JP S5981597 A JPS5981597 A JP S5981597A
- Authority
- JP
- Japan
- Prior art keywords
- fuel storage
- new fuel
- new
- safety curtain
- storage 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.)
- Pending
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
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (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】
〔発明の技術分野〕
本発明は原子炉用未使用燃料集合体の貯蔵設備に係り、
特に複数の燃料集合体を貯蔵した燃料貯蔵ラックを新燃
料貯蔵室内に効率的に収容するようにした新燃料貯蔵設
備に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to storage equipment for unused fuel assemblies for nuclear reactors,
In particular, the present invention relates to a new fuel storage facility in which a fuel storage rack storing a plurality of fuel assemblies is efficiently housed in a new fuel storage chamber.
原子力発電所に設置される原子炉建屋内には原子炉圧力
容器が収容される一方、建屋向上部に未使用の核燃料を
組み込んだ燃料集合体を貯蔵する新（未使用）燃料貯蔵
室が形成され、この貯蔵室内に燃料集合体をプールして
おり、この燃料集合体は必要に応じて原子炉炉心部に挿
入されるようになっている。While the reactor pressure vessel is housed in the reactor building installed at a nuclear power plant, a new (unused) fuel storage room is created in the upper part of the building to store fuel assemblies containing unused nuclear fuel. The fuel assemblies are pooled in this storage chamber, and these fuel assemblies are inserted into the reactor core as needed.
燃料貯蔵室１内には、第１図に示すように燃料貯蔵ラッ
ク２が複数個上部サポート３間に列状に装架され、取付
ボルトで固定される。上部す？−ト３は新（未使用）燃
料貯蔵室１の側壁に取付けられ、その側壁下部には燃料
貯蔵ラック２の下部を支持する下部サポート４が取付け
られている。Inside the fuel storage chamber 1, as shown in FIG. 1, a plurality of fuel storage racks 2 are mounted in a row between upper supports 3 and fixed with mounting bolts. Upper part? - The rack 3 is attached to the side wall of the new (unused) fuel storage chamber 1, and a lower support 4 for supporting the lower part of the fuel storage rack 2 is attached to the lower part of the side wall.
燃料貯蔵ラック２は、Ｈ型鋼で構成された筒体５を側部
補強板６および底板７で補強して一体的に形成され、各
筒体５内に燃料集合体（図示せず）を収容することがで
きるように々っている。そして、燃料貯蔵ラック２の補
強板６の適宜位置にス波−ザ８が取付けられ、このスペ
ーサ８で燃料貯蔵ラック２間の間隔が充分に保てるよう
調整している。The fuel storage rack 2 is integrally formed by reinforcing a cylindrical body 5 made of H-shaped steel with a side reinforcement plate 6 and a bottom plate 7, and accommodates a fuel assembly (not shown) in each cylindrical body 5. There are so many things you can do. A waver 8 is attached to an appropriate position on the reinforcing plate 6 of the fuel storage rack 2, and the spacer 8 is used to adjust the distance between the fuel storage racks 2 to a sufficient distance.
一方、未使用の核燃料を収納した燃料集合体は新燃料貯
蔵設備内に、核燃料による核反応を防止するため、乾燥
状態で貯蔵されるが、この新燃料貯蔵設備内に水が万一
侵入すると、新燃料貯蔵設備の中性子実効増倍率が上昇
し、高くなる・。新燃料貯蔵設備は、仮に中性子実効増
倍率が最も高くなるような密度の水に冠水された状態（
最適減速状態）であっても臨界状態に達することがない
未臨界の状態に保たなければならない。On the other hand, fuel assemblies containing unused nuclear fuel are stored in the new fuel storage facility in a dry state to prevent nuclear reactions caused by the nuclear fuel, but if water were to enter the new fuel storage facility, , the effective neutron multiplication factor of the new fuel storage facility will increase and become higher. The new fuel storage facility will be submerged in water at a density that maximizes the effective neutron multiplication factor (
It must be maintained at a subcritical state so that it does not reach a critical state even in the optimal deceleration state.
ところが、従来の新燃料貯蔵設備では、燃料集合体を収
容する燃料貯蔵ラック２間の間隔を充分に保つことによ
って、未臨界性を維持していたため、新燃料貯蔵室内に
燃料集合体を効充的に収容することができなかった。燃
料貯蔵室内の定められたスペースにより多くの燃料集合
体を収容するためには、燃料貯蔵ラック２間の間隔を縮
小すればよいが、この間隔を縮めると、新燃料貯蔵室内
に最適減速状態で臨界に達する可能性があり、新燃料貯
蔵設備の貯蔵室のスペースを拡大しなければ、多数の燃
料集合体を収容できないという問題があった。However, in conventional new fuel storage facilities, subcriticality was maintained by maintaining a sufficient distance between the fuel storage racks 2 that housed the fuel assemblies, so it was difficult to fully fill the new fuel storage chamber with fuel assemblies. could not be accommodated. In order to accommodate more fuel assemblies in a given space in the fuel storage chamber, the distance between the fuel storage racks 2 can be reduced, but if this distance is shortened, the optimum deceleration condition will not be maintained in the new fuel storage chamber. There was a problem that the new fuel storage facility could not accommodate a large number of fuel assemblies without expanding the space in the storage room.
本発明は上述した点を考慮し、新燃料貯蔵室の定められ
たスペース内に多数の燃料集合体を効果的かつ効率的に
収容することができるようにした新燃料貯蔵設備を提供
することを目的とする。The present invention takes the above-mentioned points into consideration and aims to provide a new fuel storage facility that can effectively and efficiently accommodate a large number of fuel assemblies within a defined space of a new fuel storage chamber. purpose.
本発明の他の目的は、燃料貯蔵ラック間の間隔を小さく
しても、未臨界性を充分に保てるようにし、た新燃料貯
蔵設備を提供することである。Another object of the present invention is to provide a new fuel storage facility that can sufficiently maintain subcriticality even when the spacing between fuel storage racks is reduced.
上述した目的を達成するため、本発明に係る新燃料貯蔵
設備は、原子炉建屋内の新燃料貯蔵室に複数の燃料貯蔵
ラックを列状に収容し、各燃料貯蔵ラックに複数の燃料
集合体を収納したものにおいて、上記各燃料貯蔵ラック
の間に、中性子吸収材で形成された安全カーテンを設け
たものである。In order to achieve the above-mentioned object, the new fuel storage facility according to the present invention accommodates a plurality of fuel storage racks in a row in a new fuel storage room in a reactor building, and stores a plurality of fuel assemblies in each fuel storage rack. A safety curtain made of a neutron absorbing material is provided between each of the fuel storage racks.
本発明に係る新燃料貯蔵設備の一実施例について添付図
面を参照して説明する。An embodiment of the new fuel storage facility according to the present invention will be described with reference to the accompanying drawings.
第２図は本発明の新燃料貯蔵設備を備えた沸騰水型原子
炉を示し、この原子炉の原子炉建屋１０内に原子炉圧力
容器１１が収容されている。原子炉建屋ｌＯの最上階床
１２部に燃料貯蔵設備１３が設けられる。燃料貯蔵設備
１３は燃料貯蔵室１４内に複数の燃料貯蔵ラック１５が
収容されるように々っており、各燃料貯蔵ラック１５に
例えば１０本づつの燃料集合体が収容されるようになっ
ている。FIG. 2 shows a boiling water nuclear reactor equipped with the new fuel storage facility of the present invention, in which a reactor pressure vessel 11 is housed in a reactor building 10. A fuel storage facility 13 is provided on the 12th floor of the top floor of the reactor building IO. The fuel storage facility 13 is arranged such that a plurality of fuel storage racks 15 are accommodated in a fuel storage chamber 14, and each fuel storage rack 15 accommodates, for example, 10 fuel assemblies. There is.
燃料貯蔵ラック１５は、第３図に示すように、新燃料貯
蔵室１４の側壁に対向して取付けられた上部サポート１
６間に装架され、取付ボルト等の取付手段で固定される
。貯蔵ラック１５の下部は下部サポート１８に係合し、
支持される。燃料貯蔵ラック１５は、従来の貯蔵ラック
と同じように、アルミニウム合金製のＨ型鋼で構成され
た筒体２０を列状に並設し、並設された各筒体加の側部
および底部が補強板２１および底板２２でそれぞれ補強
されて一体的に形成される。各筒体凹円には燃料集合体
が収容される。また、各燃料貯蔵ラック１５ 、１５の
間にステンレス製の安全カーテンＵが介装される。安全
カーテンＵは、第４図に示すように矩形のプレート状な
し、頂部に耳片状のノ・ンガ怒が一体的に形成され、こ
のハンガ５によね、燃料貯蔵室１４の上部サポート１６
に掛合される。As shown in FIG. 3, the fuel storage rack 15 has an upper support 1 mounted opposite to the side wall of the new fuel storage chamber 14.
6 and fixed with mounting means such as mounting bolts. The lower part of the storage rack 15 engages the lower support 18;
Supported. The fuel storage rack 15, like conventional storage racks, has cylinders 20 made of aluminum alloy H-shaped steel arranged side by side in a row, and the side and bottom parts of each cylinder are arranged in parallel. The reinforcing plate 21 and the bottom plate 22 are respectively reinforced and integrally formed. A fuel assembly is accommodated in each cylinder concave circle. Furthermore, a stainless steel safety curtain U is interposed between each fuel storage rack 15, 15. The safety curtain U has a rectangular plate shape as shown in FIG.
is multiplied by
また、安全カーテンＵの頂部には、カーテン移送用吊耳
２６が形成される一方、安全カーテン潤の上部および下
部には製造あるいは取扱いを考慮し、複数の穴２７が形
成され、上部の穴と下部の穴とは燃利集合体路の燃料有
効長りを覆うに充分の間隔に保たれている。しかして、
新燃料貯蔵室１４の上部プレート１６に掛合された安全
カーテン２４は、７１ンガ２５間に形成される凹部２９
が上部プレート１６に植設されたボルト（図示せず）に
係合することにより水平方向の移動が規制される。In addition, a hanging ear 26 for curtain transfer is formed at the top of the safety curtain U, while a plurality of holes 27 are formed at the top and bottom of the safety curtain U in consideration of manufacturing or handling. The lower holes are spaced sufficiently apart to cover the effective fuel length of the fuel assembly channel. However,
The safety curtain 24 engaged with the upper plate 16 of the new fuel storage chamber 14 is attached to a recess 29 formed between 71 fingers 25.
horizontal movement is restricted by engaging with bolts (not shown) installed in the upper plate 16.
次に、燃料貯蔵用ラック１５ 、１５間にステンレス製
の安全カーテン２４を介装させた場合、燃料貯蔵ラック
１５のラック間ピッチと、新燃料貯蔵設備の最適減速状
態における中性子実効増倍率の関係を第５図に示す。第
５図において、破線ａは従来の新燃料貯蔵設備の場合を
、実線すは本発明による新燃料貯蔵設備の場合を示して
おり、一点鎖線αは臨界点す々わち１．０の位置を示し
ている。図から理解されるようＶこ従来の新燃料貯蔵設
備の場合には、燃料貯蔵ラックのラック間ピッチを小さ
くしていくと、中性子実効増倍率がすぐに臨界点に達す
るが、本発明において（は、同じラック間ピッチ位置に
おける実効増倍率が従来より大きく低下するので、ラッ
ク間ピッチを小さくシ、稠密化を図ることができる。こ
れは、従来の新燃料貯蔵設備は、中性子吸収効果がほと
んどないアルミニウム合金製の燃料貯蔵ラックを使用ｌ
〜でおり、貯蔵ラック間のピッチ（距離）を保つことに
より、未臨界性を保持していたのに対し、本発明の場合
には、中性子吸収断面積の大きいステンレス製の安全カ
ーテンＵを燃料貯蔵ラック１５間に設けることにより、
中性子実効増倍率を積極的に低下させている点で基本的
に相違する。Next, when a stainless steel safety curtain 24 is interposed between the fuel storage racks 15, 15, the relationship between the inter-rack pitch of the fuel storage racks 15 and the effective neutron multiplication factor in the optimal deceleration state of the new fuel storage equipment. is shown in Figure 5. In FIG. 5, the broken line a shows the case of the conventional new fuel storage equipment, the solid line shows the case of the new fuel storage equipment according to the present invention, and the dashed line α shows the position of the critical point, that is, 1.0. It shows. As can be understood from the figure, in the case of conventional new fuel storage equipment, as the pitch between the fuel storage racks is reduced, the effective neutron multiplication factor quickly reaches a critical point, but in the present invention ( In this case, the effective multiplication factor at the same inter-rack pitch position is significantly lower than before, so it is possible to reduce the inter-rack pitch and achieve densification.This is because conventional new fuel storage facilities have little neutron absorption effect. Do not use aluminum alloy fuel storage racks.
In contrast, in the case of the present invention, a stainless steel safety curtain U with a large neutron absorption cross section was used to maintain subcriticality by maintaining the pitch (distance) between storage racks. By providing between the storage racks 15,
The basic difference is that the effective neutron multiplication factor is actively lowered.
一方、中性子実効増倍率は、ステンレス製安全カーテン
Ｕの肉厚にほぼ比例して低下するので、−ヒ記安全カー
テンの肉厚を増すことにより、ラック間ピッチのより一
層稠密化を図ることができ、才だ稠密化を図っても未臨
界性を充分に維持できる。したがって、従来より中性子
反応度の高い、例えばウラン濃縮度の高い未使用燃料集
合体を貯蔵する場合にも有効である。従来の新燃料貯蔵
設備では、反応度の高い燃料集合体を収納すると、貯蔵
設備の中性子実効増倍率が上昇し、最適減速状態では、
臨界に達する可能性があるが、本発明ではその恐れがな
い。また、本発明は中性子吸収効果の大きなステンレス
製安全カーテン２４を燃料貯蔵ラック１５ 、１５間に
単に挿入するだけであるので、従来の新燃料貯蔵設備に
も適用することができ、その際、燃料貯蔵ラックは従来
のｉｔ使用しても、あるいは設計変更程度に改良して使
用してもよい。On the other hand, since the effective neutron multiplication factor decreases approximately in proportion to the thickness of the stainless steel safety curtain U, it is possible to further increase the density of the pitch between the racks by increasing the thickness of the safety curtain described in (h). It is possible to sufficiently maintain subcriticality even when densification is attempted. Therefore, it is also effective when storing unused fuel assemblies with higher neutron reactivity than conventional ones, for example, with high uranium enrichment. In conventional new fuel storage facilities, when highly reactive fuel assemblies are stored, the effective neutron multiplication factor of the storage facility increases, and in the optimal deceleration state,
Although there is a possibility of reaching criticality, there is no such fear in the present invention. Furthermore, since the present invention simply involves inserting the stainless steel safety curtain 24, which has a large neutron absorption effect, between the fuel storage racks 15, 15, it can be applied to conventional new fuel storage equipment. The storage racks may be conventional or may be modified to the extent of design changes.
第６図乃至第８図は本発明の他の実施例を示す。6 to 8 show other embodiments of the invention.
この実施例に示された新燃料貯蔵設備は、新燃料貯蔵室
１４に収容される燃料貯蔵ランク３０を改良したもので
ある。この貯蔵ラック３０はプレート状のステンレス製
安全カーテン３１ａ、３１ｂを両側から覆うように、取
付ボルト３２等の取付手段で取付けたものである。安全
カーテン３１ａ、３１ｂは上下に二分割され、燃料貯蔵
ラック３０の各筒体３３の側部を補強する補強板３４お
よび上下のサイドプレート３５に取付けられる。上下の
安全カーテン３１ａ。The new fuel storage facility shown in this embodiment is an improved version of the fuel storage rank 30 housed in the new fuel storage chamber 14. This storage rack 30 is attached using attachment means such as attachment bolts 32 so as to cover plate-shaped stainless steel safety curtains 31a and 31b from both sides. The safety curtains 31a and 31b are divided into upper and lower halves, and are attached to reinforcing plates 34 that reinforce the sides of each cylinder 33 of the fuel storage rack 30 and upper and lower side plates 35. Upper and lower safety curtains 31a.
３１ ｂの接合部は、第８図に示すように外側方に向つ
て斜めの切口を有し、両切口を密着状態に突き合ぜ、重
ねることで、中性子吸収効果のイ氏下を未然に防止して
いる。As shown in Figure 8, the joint of 31b has a diagonal cut toward the outside, and by abutting both cuts closely together and overlapping them, the lower part of the neutron absorption effect can be prevented. It is prevented.
捷だ、燃料貯蔵ラック３０の上方および下方のサイドプ
レート３５には、外方に突出するスペーサ３６が一体的
に取付けられている。各スペーツ３６は安全カーテ刈１
ａ＋３１ｂの孔を介して外部に突１−１ｊＬＡ各燃料貯
蔵ラック３０を上部プレート上に装架し、たとき、安全
カーテン３１． ａ 、 ３１ ｂが互いに接触しない
ように保護されている。この場合、安全カーテン３１ａ
、３１ｂは燃料貯蔵ラック３０の既存の補強板３４およ
び上下のサイドプレート３５を利用して数句けることが
できる。Additionally, spacers 36 projecting outward are integrally attached to the upper and lower side plates 35 of the fuel storage rack 30. Each spate 36 has safety curtain mower 1
When each fuel storage rack 30 is mounted on the upper plate, the safety curtain 31. a and 31b are protected from contacting each other. In this case, the safety curtain 31a
, 31b can be constructed using the existing reinforcing plate 34 and upper and lower side plates 35 of the fuel storage rack 30.
さらに、安全カーテン３１ａ、３］ｂは上下に二分割す
る分割タイプのものではガく、一枚のプレート状安全カ
ーテン関を、第１０図および第１１図に示すように、燃
料貯蔵ラック３９の上部および下部のザイＰプレー）４
０に取付けるようシてしてもよい。Furthermore, the safety curtains 31a, 3]b are not of a split type that is divided into two parts vertically, but a single plate-shaped safety curtain is used as the fuel storage rack 39 as shown in FIGS. 10 and 11. Upper and lower Zai P play) 4
You can also set it to 0.
なお、本発明の詳細な説明においては、安全カーテンを
ステンレス材料で形成した例について説明したが、必ず
しもステン１／ス製である必要はなく、例えばボラル等
の中性子吸収効果の大きな材料であればよい。In the detailed explanation of the present invention, an example was explained in which the safety curtain was made of stainless steel material, but it does not necessarily have to be made of stainless steel. For example, it may be made of a material with a large neutron absorption effect such as Boral. good.
以上に述べたように本発明に係る新燃料貯蔵設備は、各
燃料貯蔵ラックの間に、中性子吸収材で形成された安全
カーテンを設けたから、各燃料貯蔵ランクのラック間ピ
ッチ（間隔）を小さくすることができ、と７１により新
燃料貯蔵室内に収容される燃料貯蔵ラックの数を増すこ
とができ、多数の燃料集合体を効果的かつ効率的に収容
することができる。また、燃料集合体を多数効率的に収
容しても、最適減速状態でも新燃料貯蔵設備を未臨界状
態に充分に保持することができる。As described above, the new fuel storage equipment according to the present invention has a safety curtain made of neutron absorbing material between each fuel storage rack, so the pitch (interval) between the racks of each fuel storage rank can be reduced. The number of fuel storage racks accommodated in the new fuel storage chamber can be increased by and 71, and a large number of fuel assemblies can be accommodated effectively and efficiently. Further, even if a large number of fuel assemblies are efficiently accommodated, the new fuel storage facility can be sufficiently maintained in a subcritical state even in an optimal deceleration state.
−また、中性子吸収材の安全カーテンで各燃料貯蔵ラッ
ク間を遮断することにより、反応度の高い未使用の新燃
料集合体を貯蔵することができ、さらに、安全カーテン
に中性子吸収効果の大きな中性子吸収材を用いることに
より、中性子反応度のより高い燃料集合体をより多く、
効率的に貯蔵することかできる。- In addition, by blocking each fuel storage rack with a safety curtain made of neutron absorbing material, unused new fuel assemblies with high reactivity can be stored. By using absorbers, more fuel assemblies with higher neutron reactivity can be produced.
Can be stored efficiently.
さらに、本発明は安全カーテンを各燃料貯蔵ラック間に
設けただけであるから、現在使用中の新燃料貯蔵設備へ
の適用も簡単であり、燃料集合体を高密度に貯蔵できる
ため、新燃料貯蔵室の寸法を従来より小さくすることが
可能であり、原子炉建屋内の各種機器の配置ス被−スに
全桁を持たせることができる等の効果を奏する。Furthermore, since the present invention only requires a safety curtain to be provided between each fuel storage rack, it is easy to apply to new fuel storage equipment currently in use, and since fuel assemblies can be stored in high density, new It is possible to make the size of the storage room smaller than before, and there are effects such as being able to have a full space for arranging various equipment in the reactor building.
第１図は従来の新燃料貯蔵設備に設けられる燃料貯蔵ラ
ックを示す斜視図、第２図は本発明の新燃料貯蔵設備を
備えた沸騰水型原子炉の原子炉建屋を示す断面図、第３
図は本発明の新燃料貯蔵設備の一実施例を示す斜視図、
第４図は本発明の新燃料貯蔵設備に用いられる安全カー
テンを示す正面図、第５図は、燃料貯蔵ラックのラック
間ピッチと中性子実効増倍率の関係を示す図、第６図は
本発明の他の実施例を示す図、第７図は第６図の■−■
線に沿う側面図、第８図は第６図のＶｌｌｌ−■線に沿
う平面図、＠９図は第７図のＡ部の拡大図、第１０図は
本発明のさらに他の実施例を示す図、第１１１’１２１
は第１０図の又−Σ線に沿う側面図である。
１０・・・原子炉建屋、１１・・・原子炉圧力容器、１
３・・・新燃料貯蔵設備、１４・・・新燃料貯蔵室、１
５ 、３０・・・燃料貯蔵ラック、１６・・・上部す、
ｑｅ−ト、］、８・・・下部サポート、２０・・・筒体
、２１・・・補強板（サイドブＬ／−））、２２・・・
底板、２４・・・安全カーテン、西・・・ノ＼ンガ、２
７・・・燃料集合体、３１ａ 、３１ｂ 、３８・・・
安全カーテン、３４・・・補強板、３５・・・サイドプ
レート、３６・・・スペーサ。
出願人代理人 波条 野 久
第１図
第２図
第３図
第４図
第５図FIG. 1 is a perspective view showing a fuel storage rack installed in a conventional new fuel storage facility, FIG. 2 is a sectional view showing a reactor building of a boiling water reactor equipped with the new fuel storage facility of the present invention, and FIG. 3
The figure is a perspective view showing an embodiment of the new fuel storage equipment of the present invention.
FIG. 4 is a front view showing the safety curtain used in the new fuel storage facility of the present invention, FIG. 5 is a diagram showing the relationship between the pitch between the fuel storage racks and the effective neutron multiplication factor, and FIG. 6 is the present invention FIG. 7 is a diagram showing another embodiment of FIG. 6.
8 is a plan view taken along the line Vllll-■ in FIG. 6, FIG. 9 is an enlarged view of part A in FIG. 7, and FIG. 10 shows still another embodiment of the present invention. Figure 111'121
10 is a side view taken along the -Σ line in FIG. 10. FIG. 10... Reactor building, 11... Reactor pressure vessel, 1
3... New fuel storage facility, 14... New fuel storage room, 1
5, 30... fuel storage rack, 16... upper part,
qe-t, ], 8... Lower support, 20... Cylindrical body, 21... Reinforcement plate (side plate L/-)), 22...
Bottom plate, 24...Safety curtain, West...Nonga, 2
7...Fuel assembly, 31a, 31b, 38...
Safety curtain, 34... Reinforcement plate, 35... Side plate, 36... Spacer. Applicant's agent: Hisashi Hajo No Figure 1 Figure 2 Figure 3 Figure 4 Figure 5
Claims (1)
クを列状に収容し、各燃料貯蔵ラックに複数の燃料集合
体を収納した新燃料貯蔵設備において、上記各燃料貯蔵
ラックの間に、中性子吸収材で形成された安全カーテン
を設けたことを特徴とする新燃料貯蔵設備。 ２、安全カーテンはプレート状をなし、頂部に耳片状の
ハンガが一体的に設けられ、とのハンガは新燃料貯蔵室
の側壁に取付けられた上部サポートに掛装された特許請
求の範囲第１項に記載の新燃料貯蔵設備。 ３安全カーテンは燃料貯蔵ラックのサイＰプレートに取
付けられ、上記燃料貯蔵ラックの側方を覆うように構成
した特許請求の範囲第１、項に記載の新燃料貯蔵設備。 ４、安全カーテンは上下２分割構造をなし、その接合部
は側外方に向って斜めの切口を有し、各切口面が密着す
るように突き合された特許請求の範囲第３項に記載の新
燃料貯蔵設備。 ５、安全カーテンはステンレス鋼で形成された特許請求
の範囲第１項に記載の新燃料貯蔵設備。[Scope of Claims] ], a new fuel storage facility in which a plurality of fuel storage racks are housed in a row in a new fuel storage room in a reactor building, and a plurality of fuel assemblies are housed in each fuel storage rack; A new fuel storage facility characterized by having a safety curtain made of neutron absorbing material installed between each fuel storage rack. 2. The safety curtain has a plate shape, and a tab-like hanger is integrally provided at the top, and the hanger is hung on an upper support attached to the side wall of the new fuel storage chamber. The new fuel storage facility described in item 1. 3. The new fuel storage facility according to claim 1, wherein the safety curtain is attached to the side P plate of the fuel storage rack and is configured to cover the sides of the fuel storage rack. 4. The safety curtain has a structure in which it is divided into upper and lower halves, the joint portion thereof has an oblique cut toward the outside, and the cut surfaces are butted against each other so as to be in close contact with each other, according to claim 3. new fuel storage facility. 5. The new fuel storage equipment according to claim 1, wherein the safety curtain is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57191762A JPS5981597A (en) | 1982-11-02 | 1982-11-02 | New fuel storage facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57191762A JPS5981597A (en) | 1982-11-02 | 1982-11-02 | New fuel storage facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5981597A true JPS5981597A (en) | 1984-05-11 |
Family
ID=16280083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57191762A Pending JPS5981597A (en) | 1982-11-02 | 1982-11-02 | New fuel storage facility |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5981597A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005265560A (en) * | 2004-03-17 | 2005-09-29 | Toshiba Corp | Rack for stowing fuel bundle, and method for designing the same |
-
1982
- 1982-11-02 JP JP57191762A patent/JPS5981597A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005265560A (en) * | 2004-03-17 | 2005-09-29 | Toshiba Corp | Rack for stowing fuel bundle, and method for designing the same |
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