JP2016075652A - Nuclear fuel storage facility and nuclear fuel storage method - Google Patents

Nuclear fuel storage facility and nuclear fuel storage method Download PDF

Info

Publication number
JP2016075652A
JP2016075652A JP2014207991A JP2014207991A JP2016075652A JP 2016075652 A JP2016075652 A JP 2016075652A JP 2014207991 A JP2014207991 A JP 2014207991A JP 2014207991 A JP2014207991 A JP 2014207991A JP 2016075652 A JP2016075652 A JP 2016075652A
Authority
JP
Japan
Prior art keywords
fuel storage
nuclear fuel
common base
support structure
spent fuel
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
JP2014207991A
Other languages
Japanese (ja)
Other versions
JP6392067B2 (en
Inventor
和 渡邉
Kazu Watanabe
和 渡邉
片山　洋
Hiroshi Katayama
洋 片山
祐治 前田
Yuji Maeda
祐治 前田
里代子 四條
Riyoko Shijo
里代子 四條
田上　哲治
Tetsuji Tagami
哲治 田上
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP2014207991A priority Critical patent/JP6392067B2/en
Publication of JP2016075652A publication Critical patent/JP2016075652A/en
Application granted granted Critical
Publication of JP6392067B2 publication Critical patent/JP6392067B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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

  • Warehouses Or Storage Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a nuclear fuel storage facility and a nuclear fuel storage method which can prevent complicated behavior of nuclear storage racks during an earthquake.SOLUTION: A nuclear fuel storage facility includes: spent fuel storage racks 11 including a plurality of cells 13 each of which houses one spent fuel assembly 1 stored in a spent fuel storage pool 12; and a rectangular common base 16 on which the plurality of spent fuel storage racks 11 are mounted in a fixed state. The common base 16 is fixed on a bottom face 20 of the spent fuel storage pool 12 by using a plurality of foundation bolts 19 provided on a line parallel with a long side 18A of the common base 16 and at a position corresponding to a center position of the longest base (long side 15A of a bottom face 14) in each of the spent fuel storage racks 11.SELECTED DRAWING: Figure 1

Description

本発明の実施形態は、核燃料集合体を核燃料貯蔵プールに保管する核燃料貯蔵設備および核燃料貯蔵方法に関する。   Embodiments described herein relate generally to a nuclear fuel storage facility and a nuclear fuel storage method for storing nuclear fuel assemblies in a nuclear fuel storage pool.

原子力発電所では、原子炉の炉心において所定期間使用した燃料（使用済燃料集合体）は炉心から取り出された後、原子炉建屋内の使用済燃料貯蔵プール内に設置された使用済燃料貯蔵ラックに装荷される。使用済燃料貯蔵ラックは、使用済燃料集合体が臨界に達しないように冷却して保管する機能を有するほか、地震荷重に対して破損及び転倒が防止される必要がある。   In a nuclear power plant, spent fuel (used fuel assembly) used in a reactor core for a predetermined period is taken out of the core and then used fuel storage racks installed in the spent fuel storage pool in the reactor building. To be loaded. The spent fuel storage rack has a function of cooling and storing the spent fuel assembly so that it does not reach criticality, and it is necessary to prevent breakage and overturning against an earthquake load.

使用済燃料貯蔵ラックの設置方式には、使用済燃料貯蔵プールの底面にボルトで固定する固定式と、ボルトで固定しない自立式とがある。図１１に示す固定式の使用済燃料貯蔵ラック１００は、その底面１０１がラック固定ボルト１０２を用いて使用済燃料貯蔵プール１０３のプール底面１０４に固定されている。   There are two types of installation methods for the spent fuel storage rack: a fixed type that is fixed to the bottom of the spent fuel storage pool with bolts and a self-supporting type that is not fixed with bolts. The bottom surface 101 of the fixed spent fuel storage rack 100 shown in FIG. 11 is fixed to the pool bottom surface 104 of the spent fuel storage pool 103 using rack fixing bolts 102.

この固定式の使用済燃料貯蔵ラック１００においては、地震時の転倒モーメントによりラック固定ボルト１０２に大きな引張荷重が作用するため、この引張荷重を低減して、使用済燃料貯蔵プール１０３のプール底面１０４のコンクリート強度に余裕度を担保することが課題である。この課題に対し、ラック固定ボルトに嵌入された使用済燃料ラックをナットで締結しないようにすることで、引張荷重の発生を防止するものが提案されている（例えば特許文献１）。   In this fixed-type spent fuel storage rack 100, a large tensile load acts on the rack fixing bolt 102 due to the overturning moment at the time of an earthquake, so this tensile load is reduced and the pool bottom surface 104 of the spent fuel storage pool 103 is reduced. It is a problem to secure a margin for the concrete strength of the steel. In order to solve this problem, there has been proposed one that prevents the generation of a tensile load by preventing a spent fuel rack inserted into a rack fixing bolt from being fastened with a nut (for example, Patent Document 1).

一方、自立式の使用済燃料貯蔵ラックにおいては、ボルトの引張荷重による損傷の可能性が無く、据え付け・取り外しが容易であるという利点があるが、固定されないために、滑りや浮き上がり、ロッキング等が生じ、使用済燃料貯蔵ラックが互いに、または使用済燃料貯蔵プール内の機器やプール壁に接触し衝突する可能性がある。この課題に対し、使用済燃料貯蔵ラック同士を連結して衝突を防止する構造（例えば特許文献２）や、摺動可能な脚部の外側に板（フィン）を設けてロッキングを防止する構造（例えば特許文献３）が提案されている。   On the other hand, a self-supporting spent fuel storage rack has the advantage of being easy to install and remove without the possibility of damage due to the tensile load of the bolts, but because it is not fixed, slipping, floating, locking, etc. As a result, the spent fuel storage racks may come into contact with and collide with each other or equipment or pool walls in the spent fuel storage pool. In response to this problem, a structure that prevents spent collisions by connecting spent fuel storage racks (for example, Patent Document 2) or a structure that prevents rocking by providing a plate (fin) outside the slidable leg ( For example, Patent Document 3) has been proposed.

特開２００３−３５７９４号公報JP 2003-35794 A 特開２０１３−２２８４０５号公報JP 2013-228405 A 特開２０１３−１８６０１５号公報JP 2013-186015 A

上述したボルトで固定しない自立式の使用済燃料貯蔵ラックでは、ボルトに作用する引張荷重による使用済燃料貯蔵プールのプール底面のコンクリートが損傷を蒙ることを防止して、このプール底面に強度上の余裕度を確保できる。しかしながら、地震時には、自立式の使用済燃料貯蔵ラックに滑りや浮き上がり、ロッキング等、または鉛直軸周りの回転や衝突という複雑な挙動が生じるため、耐震評価が困難であるという課題があった。   In the above-described self-supporting spent fuel storage rack that is not fixed with bolts, the concrete at the bottom of the pool of the spent fuel storage pool due to the tensile load acting on the bolt is prevented from being damaged, A margin can be secured. However, in the event of an earthquake, the self-supporting spent fuel storage rack has complicated behaviors such as sliding, floating, rocking, rotation, and collision around the vertical axis, which makes it difficult to perform seismic evaluation.

本発明における実施形態の目的は、上述の事情を考慮してなされたものであり、地震時における核燃料貯蔵ラックの複雑な挙動を防ぐことができる核燃料貯蔵設備および核燃料貯蔵方法を提供することにある。   An object of the embodiment of the present invention is to provide a nuclear fuel storage facility and a nuclear fuel storage method capable of preventing the complicated behavior of the nuclear fuel storage rack at the time of an earthquake. .

本発明の実施形態における核燃料貯蔵設備は、核燃料貯蔵プールに保管される核燃料集合体を一体ずつ収納するセルが複数配置された核燃料貯蔵ラックと、複数体の前記核燃料貯蔵ラックを固定状態で載置する長方形形状のコモンベースとを有し、前記コモンベースは、このコモンベースの長辺に平行な線上で、且つ前記核燃料貯蔵ラックにおける最長の底辺の中央位置に相当する位置に設けられた複数本の基礎ボルトを用いて、前記核燃料貯蔵プールの底面に固定されることを特徴とするものである。   A nuclear fuel storage facility according to an embodiment of the present invention includes a nuclear fuel storage rack in which a plurality of cells each storing nuclear fuel assemblies stored in a nuclear fuel storage pool are arranged, and a plurality of the nuclear fuel storage racks mounted in a fixed state. A plurality of common bases provided on a line parallel to the long side of the common base and at a position corresponding to the center position of the longest bottom of the nuclear fuel storage rack. It is fixed to the bottom face of the nuclear fuel storage pool using a foundation bolt.

本発明の実施形態における核燃料貯蔵設備は、核燃料貯蔵プールに保管される核燃料集合体を一体ずつ収納するセルが複数配置された核燃料貯蔵ラックを備え、それぞれが複数体の前記核燃料貯蔵ラックを固定状態で載置するコモンベースを前記核燃料貯蔵プールに複数配置してなり、前記コモンベースは、隣接するコモンベースとの間、及び前記核燃料貯蔵プールの側壁との間に配置されたコモンベース用緩衝部材により前記核燃料貯蔵プールに支持されることを特徴とするものである。   A nuclear fuel storage facility according to an embodiment of the present invention includes a nuclear fuel storage rack in which a plurality of cells each storing nuclear fuel assemblies stored in a nuclear fuel storage pool are arranged, and each of the nuclear fuel storage racks is fixed. A plurality of common bases placed in the nuclear fuel storage pool, wherein the common base is disposed between the adjacent common bases and between the side walls of the nuclear fuel storage pool. Is supported by the nuclear fuel storage pool.

さらに、本発明の実施形態における核燃料貯蔵方法は、核燃料集合体を一体ずつ収納するセルが複数配置された核燃料貯蔵ラックを、長方形状のコモンベースに固定状態で複数体載置して核燃料貯蔵プールに設置し、前記核燃料集合体を前記核燃料貯蔵プールに貯蔵する核燃料貯蔵方法であって、前記コモンベースは、このコモンベースの長辺に平行な線上で、且つ前記核燃料貯蔵ラックにおける最長の底辺の中央位置に相当する位置に設けられた複数本の基礎ボルトを用いて、前記核燃料貯蔵プールの底面に固定されることを特徴とするものである。   Furthermore, the nuclear fuel storage method according to the embodiment of the present invention includes a nuclear fuel storage pool in which a plurality of nuclear fuel storage racks each including a plurality of cells that integrally store nuclear fuel assemblies are placed in a fixed state on a rectangular common base. The nuclear fuel storage method is configured to store the nuclear fuel assembly in the nuclear fuel storage pool, wherein the common base is on a line parallel to the long side of the common base and the longest bottom of the nuclear fuel storage rack. It is fixed to the bottom face of the nuclear fuel storage pool using a plurality of foundation bolts provided at a position corresponding to the center position.

本発明の実施形態によれば、地震時における核燃料貯蔵ラックの複雑な挙動を防ぐことができる。   According to the embodiment of the present invention, the complicated behavior of the nuclear fuel storage rack during an earthquake can be prevented.

第１実施形態に係る核燃料貯蔵設備が適用された使用済燃料貯蔵設備を示す縦断面図。The longitudinal cross-sectional view which shows the spent fuel storage facility with which the nuclear fuel storage facility which concerns on 1st Embodiment was applied. 図１の使用済燃料貯蔵ラック及びコモンベースを示す斜視図。The perspective view which shows the spent fuel storage rack and common base of FIG. 図１の使用済燃料貯蔵ラックに地震時の転倒モーメントが作用したときの状況を説明する説明図。Explanatory drawing explaining the condition when the fall moment at the time of an earthquake acts on the spent fuel storage rack of FIG. 図１の使用済燃料貯蔵ラックにおける地震時の水平方向変位を説明する説明図。Explanatory drawing explaining the horizontal direction displacement at the time of the earthquake in the spent fuel storage rack of FIG. 図１の使用済燃料貯蔵ラックを示す平面図。The top view which shows the spent fuel storage rack of FIG. 第２実施形態に係る核燃料貯蔵設備が適用された使用済燃料貯蔵設備における使用済燃料貯蔵ラック等を示す平面図。The top view which shows the spent fuel storage rack etc. in the spent fuel storage facility to which the nuclear fuel storage facility which concerns on 2nd Embodiment was applied. 図６のＶＩＩ−ＶＩＩ線に沿う断面図。Sectional drawing which follows the VII-VII line of FIG. 第３実施形態に係る核燃料貯蔵設備が適用された使用済燃料貯蔵設備の要部を示す断面図。Sectional drawing which shows the principal part of the spent fuel storage facility with which the nuclear fuel storage facility which concerns on 3rd Embodiment was applied. 図８の使用済燃料貯蔵設備の変形形態を示す要部断面図。FIG. 9 is a cross-sectional view of a main part showing a modified form of the spent fuel storage facility of FIG. 8. 第４実施形態における核燃料貯蔵設備が適用された使用済燃料貯蔵設備を示す縦断面図。The longitudinal cross-sectional view which shows the spent fuel storage installation with which the nuclear fuel storage installation in 4th Embodiment was applied. 従来の核燃料貯蔵設備としての使用済燃料貯蔵設備を示す縦断面図。The longitudinal cross-sectional view which shows the spent fuel storage installation as the conventional nuclear fuel storage installation.

以下、本発明を実施するための形態を、図面に基づき説明する。
［Ａ］第１実施形態（図１〜図５）
図１は、第１実施形態に係る核燃料貯蔵設備が適用された使用済燃料貯蔵設備を示す縦断面図である。この図１に示す核燃料貯蔵設備としての使用済燃料貯蔵設備１０は、核燃料集合体としての使用済燃料集合体１を核燃料貯蔵ラックとしての使用済燃料貯蔵ラック１１に複数体収納し、この使用済燃料貯蔵ラック１１を核燃料貯蔵プールとしての使用済燃料貯蔵プール１２に保管し、使用済燃料集合体１を冷却して未臨界状態に保つものである。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[A] First embodiment (FIGS. 1 to 5)
FIG. 1 is a longitudinal sectional view showing a spent fuel storage facility to which the nuclear fuel storage facility according to the first embodiment is applied. A spent fuel storage facility 10 as a nuclear fuel storage facility shown in FIG. 1 stores a plurality of spent fuel assemblies 1 as nuclear fuel assemblies in a spent fuel storage rack 11 as a nuclear fuel storage rack. The fuel storage rack 11 is stored in a spent fuel storage pool 12 as a nuclear fuel storage pool, and the spent fuel assembly 1 is cooled and kept in a subcritical state.

使用済燃料貯蔵ラック１１は、図１及び図２に示すように、使用済燃料集合体１を一体ずつ収納するセル１３が複数配置され、長方形形状の底面１４を備えた直方体形状に構成される。この使用済燃料貯蔵ラック１１は、底面１４の短辺１５Ｂに沿う両側部分が長方形形状のコモンベース１６にラック固定ボルト１７を用いて固定されることで、このコモンベース１６に固定状態で複数体載置される。   As shown in FIGS. 1 and 2, the spent fuel storage rack 11 is configured in a rectangular parallelepiped shape in which a plurality of cells 13 each housing the spent fuel assembly 1 are arranged and a rectangular bottom surface 14 is provided. . The spent fuel storage rack 11 is fixed to the common base 16 by using rack fixing bolts 17 on both sides along the short side 15B of the bottom surface 14 so that a plurality of the spent fuel storage racks 11 are fixed to the common base 16. Placed.

コモンベース１６は、プール底面２０へ垂直に投影した形状が長方形形状に形成されており、それぞれの使用済み燃料貯蔵ラック１１は、コモンベース１６の短辺１８Ｂに対して使用済燃料貯蔵ラック１１の長辺１５Ａが平行となるようにコモンベース１６に固定状態で載置される。コモンベース１６は、長辺１８Ａに平行な線上で、且つ短辺１８Ｂの中央位置（つまり、コモンベース１６に載置される使用済燃料貯蔵ラック１１の最長の底辺である長辺１５Ａの中央位置に相当する位置）に複数本位置付けられた基礎ボルト１９を用いて、使用済燃料貯蔵プール１２のコンクリート製のプール底面２０に固定される。これにより、複数体の使用済燃料集合体１を装架した複数体の使用済燃料貯蔵ラック１１が、コモンベース１６を介して使用済燃料貯蔵プール１２のプール底面２０に固定して支持される。   The common base 16 is formed in a rectangular shape vertically projected onto the pool bottom surface 20, and each spent fuel storage rack 11 is arranged with respect to the short side 18 </ b> B of the common base 16. The long side 15A is placed in a fixed state on the common base 16 so as to be parallel. The common base 16 is on a line parallel to the long side 18A and the central position of the short side 18B (that is, the central position of the long side 15A that is the longest bottom side of the spent fuel storage rack 11 placed on the common base 16). Are fixed to the concrete pool bottom surface 20 of the spent fuel storage pool 12 by using a plurality of foundation bolts 19 positioned at positions corresponding to As a result, a plurality of spent fuel storage racks 11 mounted with a plurality of spent fuel assemblies 1 are fixedly supported on the pool bottom surface 20 of the spent fuel storage pool 12 via the common base 16. .

図１１に示す背景技術の如く、単体の使用済燃料貯蔵ラック１００がラック固定ボルト１０２を用いて使用済燃料貯蔵プール１０３のプール底面１０４に直接締結される場合、両ラック固定ボルト１０２（本第１実施形態の短辺１５Ｂに沿う両ラック固定ボルト１７）間のスパンはスパンＳ（図２）である。これに対し、複数本の使用済燃料貯蔵ラック１１が本第１実施形態の如く、コモンベース１６を介し基礎ボルト１９を用いてプール底面２０に締結される場合、コモンベース１６の長辺１８Ａに沿う両端の基礎ボルト１９間のスパンは、スパンＳよりも十数倍大きなスパンＰとなる。このため、使用済燃料貯蔵設備１０の使用済燃料貯蔵ラック１１にＸ方向の地震力が作用した場合、コモンベース１６上の使用済燃料貯蔵ラック１１が転倒し難くなるので、基礎ボルト１９に作用する引張荷重が小さくなる。   When the single spent fuel storage rack 100 is directly fastened to the pool bottom surface 104 of the spent fuel storage pool 103 using the rack fixing bolts 102 as in the background art shown in FIG. The span between the rack fixing bolts 17) along the short side 15B of one embodiment is a span S (FIG. 2). In contrast, when a plurality of spent fuel storage racks 11 are fastened to the pool bottom surface 20 using the foundation bolts 19 via the common base 16 as in the first embodiment, the long sides 18A of the common base 16 are The span between the foundation bolts 19 at both ends along the span is a span P that is ten times as large as the span S. For this reason, when the X-direction seismic force acts on the spent fuel storage rack 11 of the spent fuel storage facility 10, the spent fuel storage rack 11 on the common base 16 is unlikely to fall down. The tensile load to be reduced.

また、図３に示すように、コモンベース１６が、使用済燃料貯蔵ラック１１の長辺１５Ａの中央位置に相当する位置で基礎ボルト１９を用いてプール底面２０に固定されているため、使用済燃料貯蔵ラック１１にＹ方向の地震力Ｆｙが作用した場合、この地震力Ｆｙは基礎ボルト１９の直上に作用することになる。このため、地震力Ｆｙにより使用済燃料貯蔵ラック１１に転倒モーメントＭが生じても、この転倒モーメントＭによる基礎ボルト１９への引張荷重はほとんど作用しない。   Further, as shown in FIG. 3, the common base 16 is fixed to the pool bottom surface 20 using a foundation bolt 19 at a position corresponding to the center position of the long side 15 </ b> A of the spent fuel storage rack 11. When the Y direction seismic force Fy acts on the fuel storage rack 11, this seismic force Fy acts directly on the foundation bolt 19. For this reason, even if the overturning moment M occurs in the spent fuel storage rack 11 due to the seismic force Fy, the tensile load on the foundation bolt 19 due to the overturning moment M hardly acts.

また、使用済燃料貯蔵ラック１１を複数体載置するコモンベース１６が、図５に示すように使用済燃料貯蔵プール１２のプール底面２０に複数配置される場合、これらのコモンベース１０の間の間隔Ｌは、次のようにして設定される。つまり、図４に示すように、まず、使用済燃料貯蔵ラック１１、コモンベース１６、ラック固定ボルト１７及び基礎ボルト１９の剛性を考慮して、使用済燃料貯蔵ラック１１の頭頂部１１Ａが地震時に水平方向に変位する最大水平変位量Ａを、例えば地震応答解析により算出する。そして、コモンベース１６間の間隔Ｌは、前述の如く算出された最大水平変位量Ａの少なくとも２倍の寸法となるように設定される。   When a plurality of common bases 16 on which a plurality of spent fuel storage racks 11 are placed are arranged on the pool bottom surface 20 of the spent fuel storage pool 12 as shown in FIG. The interval L is set as follows. That is, as shown in FIG. 4, first, in consideration of the rigidity of the spent fuel storage rack 11, the common base 16, the rack fixing bolt 17 and the foundation bolt 19, the top 11 </ b> A of the spent fuel storage rack 11 is at the time of an earthquake. The maximum horizontal displacement amount A that is displaced in the horizontal direction is calculated by, for example, earthquake response analysis. The interval L between the common bases 16 is set to be at least twice the maximum horizontal displacement amount A calculated as described above.

以上のように構成されたことから、本第１実施形態によれば、次の効果（１）〜（３）を奏する。
（１）複数体の使用済燃料集合体１を収納する使用済燃料貯蔵ラック１１がコモンベース１６に複数体、ラック固定ボルト１７を用いて固定状態で載置され、このコモンベース１６が基礎ボルト１７を用いて使用済燃料貯蔵プール１２のプール底面２０に固定されている。従って、地震時における使用済燃料貯蔵ラックの滑りや浮き上がり、鉛直軸周りの回転、衝突などの複雑な挙動を確実に防止できる。 With the configuration as described above, the following effects (1) to (3) are achieved according to the first embodiment.
(1) A plurality of spent fuel storage racks 11 for housing a plurality of spent fuel assemblies 1 are mounted on a common base 16 in a fixed state using rack fixing bolts 17, and the common base 16 is a base bolt. 17 is fixed to the pool bottom surface 20 of the spent fuel storage pool 12. Therefore, it is possible to reliably prevent complicated behavior such as slipping and lifting of the spent fuel storage rack, rotation around the vertical axis, and collision during an earthquake.

（２）コモンベース１６に設けられた基礎ボルト１９が、コモンベース１６の長辺１８Ａに平行な線上で、且つ使用済燃料貯蔵ラック１１における底面１４の長辺１５Ａの中央位置に相当する位置に設けられたので、地震時のＸ方向及びＹ方向の地震力により基礎ボルト１９に作用する引張荷重を低減できる。このため、この基礎ボルト１９に作用する引張荷重によって使用済燃料貯蔵プール１２のコンクリート製のプール底面２０に与える損傷を防止でき、この結果、このプール底面２０に強度上の余裕度を確保できる。   (2) The foundation bolt 19 provided on the common base 16 is on a line parallel to the long side 18A of the common base 16 and at a position corresponding to the center position of the long side 15A of the bottom surface 14 of the spent fuel storage rack 11. Since it is provided, the tensile load acting on the foundation bolt 19 can be reduced by the seismic force in the X direction and the Y direction at the time of the earthquake. For this reason, the damage given to the concrete pool bottom surface 20 of the spent fuel storage pool 12 by the tensile load acting on the foundation bolt 19 can be prevented, and as a result, a margin in strength can be secured on the pool bottom surface 20.

（３）使用済燃料貯蔵ラック１１を複数体載置するコモンベース１６が、使用済燃料貯蔵プール１２のプール底面２０に複数配置されたとき、これらのコモンベース１６間の間隔Ｌは、地震時に水平方向に変位する使用済燃料貯蔵ラック１１の頭頂部１１Ａの最大水平変位量Ａの少なくとも２倍の寸法に設定されている。この結果、複数のコモンベース１６にそれぞれ載置された使用済燃料貯蔵ラック１１が地震時に接触または衝突することを確実に防止でき、この使用済燃料貯蔵ラック１１の健全性を保持できる。   (3) When a plurality of common bases 16 on which a plurality of spent fuel storage racks 11 are placed are arranged on the pool bottom surface 20 of the spent fuel storage pool 12, the interval L between these common bases 16 is determined during an earthquake. The dimension is set to at least twice the maximum horizontal displacement A of the top 11A of the spent fuel storage rack 11 that is displaced in the horizontal direction. As a result, the spent fuel storage racks 11 mounted on the plurality of common bases 16 can be reliably prevented from contacting or colliding at the time of an earthquake, and the soundness of the spent fuel storage racks 11 can be maintained.

［Ｂ］第２実施形態（図６、図７）
図６は、第２実施形態に係る核燃料貯蔵設備が適用された使用済燃料貯蔵設備における使用済燃料貯蔵ラック等を示す平面図である。また、図７は図６のＶＩＩ−ＶＩＩ線に沿う断面図である。この第２実施形態において、第１実施形態と同様な部分については、同一の符号を付すことにより説明を簡略化し、または省略する。 [B] Second Embodiment (FIGS. 6 and 7)
FIG. 6 is a plan view showing a spent fuel storage rack and the like in the spent fuel storage facility to which the nuclear fuel storage facility according to the second embodiment is applied. FIG. 7 is a sectional view taken along line VII-VII in FIG. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description is simplified or omitted.

本第２実施形態の核燃料貯蔵設備としての使用済燃料貯蔵設備３０が第１実施形態と異なる点は、核燃料貯蔵ラックとしての使用済燃料貯蔵ラック３１に下方から上方まで貫通する貫通孔３２が形成され、コモンベース３３に形成された支持構造体３４が貫通孔３２に嵌合することで、使用済燃料貯蔵ラック３１がコモンベース３３に固定状態で載置される点である。   The spent fuel storage facility 30 as the nuclear fuel storage facility of the second embodiment is different from the first embodiment in that a through-hole 32 penetrating from below to above is formed in the spent fuel storage rack 31 as the nuclear fuel storage rack. The support structure 34 formed on the common base 33 is fitted into the through hole 32, so that the spent fuel storage rack 31 is placed in a fixed state on the common base 33.

使用済燃料貯蔵ラック３１に形成される貫通孔３２は、一体の使用済燃料貯蔵ラック３１について少なくとも一つ、本実施形態では２つ形成されている。また、コモンベース３３に形成される支持構造体３４は、上部が角錐台形状に形成されると共に、使用済燃料貯蔵ラック３１のセル１３によりもやや小さな矩形断面を有する。更に、支持構造体３４は、貫通孔３２の横断面積と略同一の横断面積を有することが好ましい。   At least one through-hole 32 formed in the spent fuel storage rack 31 is formed for the integral spent fuel storage rack 31 in the present embodiment. The support structure 34 formed on the common base 33 is formed in a truncated pyramid shape at the top, and has a slightly smaller rectangular cross section than the cell 13 of the spent fuel storage rack 31. Further, the support structure 34 preferably has a cross-sectional area substantially the same as the cross-sectional area of the through hole 32.

以上のように構成されたことから、本第２実施形態によれば、第１実施形態の効果（２）及び（３）と同様な効果を奏するほか、次の効果（４）及び（５）を奏する。   With the configuration as described above, according to the second embodiment, in addition to the same effects as the effects (2) and (3) of the first embodiment, the following effects (4) and (5) Play.

（４）複数体の使用済燃料集合体１を収納する使用済燃料貯蔵ラック３１が貫通孔３２に、使用済燃料貯蔵ラック３１の貫通孔３２とコモンベース３３の支持構造体３４との嵌合により水平変位が拘束された固定状態で載置され、コモンベース３３が基礎ボルト１９を用いて使用済燃料貯蔵プール１２のプール底面２０に固定されている。このため、使用済燃料貯蔵ラック３１のコモンベース３３への据え付け及び取り外しを容易にしつつ、地震時における使用済燃料貯蔵ラック３１の滑りや浮き上がり、鉛直軸周りの回転、衝突などの複雑な挙動を確実に防止できる。   (4) The spent fuel storage rack 31 for storing a plurality of spent fuel assemblies 1 is fitted into the through hole 32 and the through hole 32 of the spent fuel storage rack 31 and the support structure 34 of the common base 33 are fitted. The common base 33 is fixed to the pool bottom surface 20 of the spent fuel storage pool 12 by using the foundation bolt 19. For this reason, while making it easy to install and remove the spent fuel storage rack 31 from the common base 33, complicated behavior such as slipping and lifting of the spent fuel storage rack 31 at the time of an earthquake, rotation around the vertical axis, and collisions can be achieved. It can be surely prevented.

（５）コモンベース３３の支持構造体３４が、使用済燃料貯蔵ラック３１の貫通孔３２の横断面積と略同一の横断面積に設定されたので、支持構造体３４と貫通孔３２とのギャップ量を極めて小さくできる。従って、地震時に使用済燃料貯蔵ラック３１に滑りが生じた場合にも、コモンベース３３の支持構造体３４に作用する使用済燃料貯蔵ラック３１からの衝撃荷重を低減できる。この結果、コモンベース３３を使用済燃料貯蔵プール１２のプール底面２０に固定する基礎ボルト１９に作用するせん断力を低減できるので、このプール底面２０に強度上の余裕度を確保できる。   (5) Since the support structure 34 of the common base 33 is set to a cross-sectional area substantially the same as the cross-sectional area of the through-hole 32 of the spent fuel storage rack 31, the gap amount between the support structure 34 and the through-hole 32 Can be made extremely small. Therefore, even when the spent fuel storage rack 31 slips during an earthquake, the impact load from the spent fuel storage rack 31 acting on the support structure 34 of the common base 33 can be reduced. As a result, since the shearing force acting on the foundation bolt 19 that fixes the common base 33 to the pool bottom surface 20 of the spent fuel storage pool 12 can be reduced, a margin in strength can be secured on the pool bottom surface 20.

尚、本第２実施形態において、使用済燃料貯蔵ラック３１は貫通孔３２を少なくとも２つを有し、コモンベース３３は、支持構造体３４を少なくとも２個有し、これらの貫通孔３２と支持構造体３４とが嵌合可能に構成されることが好ましい。これにより、地震時に発生する使用済燃料貯蔵ラック３１の鉛直軸周りの回転をより確実に抑制することが可能になる。   In the second embodiment, the spent fuel storage rack 31 has at least two through holes 32, and the common base 33 has at least two support structures 34. It is preferable that the structure 34 can be fitted. This makes it possible to more reliably suppress the rotation of the spent fuel storage rack 31 around the vertical axis that occurs during an earthquake.

［Ｃ］第３実施形態（図８、図９）
図８は、第３実施形態に係る核燃料貯蔵設備が適用された使用済燃料貯蔵設備の要部を示す断面図である。この第３実施形態において、第１及び第２実施形態と同様な部分については、同一の符号を付すことにより説明を簡略化し、または省略する。 [C] Third embodiment (FIGS. 8 and 9)
FIG. 8 is a cross-sectional view showing a main part of the spent fuel storage facility to which the nuclear fuel storage facility according to the third embodiment is applied. In the third embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and description thereof is simplified or omitted.

本第３実施形態の核燃料貯蔵設備としての使用済燃料貯蔵設備４０が第１及び第２実施形態と異なる点は、第２実施形態の支持構造体３４が、互いに嵌合可能な上部支持構造体４１及び下部支持構造体４２に分割され、これらの上部支持構造体４１及び下部支持構造体４２が締結部材４３により締結されて構成された点である。   The spent fuel storage equipment 40 as the nuclear fuel storage equipment of the third embodiment is different from the first and second embodiments in that the support structure 34 of the second embodiment can be fitted to each other. 41 and the lower support structure 42, and the upper support structure 41 and the lower support structure 42 are fastened by a fastening member 43.

つまり、下部支持構造体４２は、コモンベース３３に立設されて角錐台形状に形成される共に、使用済燃料貯蔵ラック３１の貫通孔３２に挿入可能に設けられる。また、上部支持構造体４１は、外形が直方体形状で、外側面４１Ａが使用済燃料貯蔵ラック３１の貫通孔３２に嵌合可能に設けられる。また、上部支持構造体４１は、内部がくり抜かれ、このくり抜かれて形成された内側面４１Ｂが下部支持構造体４２に嵌合可能に設けられる。ここで、上部支持構造体４１の外側面４１Ａの平面視寸法（例えば対角線寸法）は、使用済燃料貯蔵ラック３１の貫通孔３２の平面視内側寸法（例えば対角線寸法）と略同一であり、この外側面４１Ａが貫通孔３２に嵌合されたときのギャップ量は極めて小さく設定されている。   That is, the lower support structure 42 is erected on the common base 33 and formed into a truncated pyramid shape, and is provided so as to be inserted into the through hole 32 of the spent fuel storage rack 31. Further, the upper support structure 41 has a rectangular parallelepiped shape, and the outer side surface 41 </ b> A is provided so as to be fitted in the through hole 32 of the spent fuel storage rack 31. Further, the upper support structure 41 is hollowed out, and an inner side surface 41B formed by hollowing out is provided so that the lower support structure 42 can be fitted. Here, the plan view dimension (for example, diagonal dimension) of the outer side surface 41A of the upper support structure 41 is substantially the same as the plan view inner dimension (for example, diagonal dimension) of the through hole 32 of the spent fuel storage rack 31. The gap amount when the outer side surface 41A is fitted into the through hole 32 is set to be extremely small.

使用済燃料貯蔵ラック３１をコモンベース３３に載置する際には、まず、使用済燃料貯蔵ラック３１の貫通孔３２にコモンベース３３の下部支持構造体４２を挿入させる。次に、使用済燃料貯蔵ラック３１の貫通孔３２の上方から上部支持構造体４１及び締結部材４３を差し込み、上部支持構造体４１の外側面４１Ａを貫通孔３２に嵌合させながら、上部支持構造体４１の内側面４１Ｂを下部支持構造体４２に嵌合させる。その後、締結部材４３を上部支持構造体４１及び下部支持構造体４２に締結する。これにより、上部支持構造体４１及び下部支持構造体４２が一体化されると共に、これらの上部支持構造体４１及び下部支持構造体４２により使用済燃料貯蔵ラック３１がコモンベース３３に、水平変位が拘束された固定状態で載置される。   When placing the spent fuel storage rack 31 on the common base 33, first, the lower support structure 42 of the common base 33 is inserted into the through hole 32 of the spent fuel storage rack 31. Next, the upper support structure 41 and the fastening member 43 are inserted from above the through hole 32 of the spent fuel storage rack 31, and the outer support surface 41 </ b> A of the upper support structure 41 is fitted into the through hole 32. The inner side surface 41 </ b> B of the body 41 is fitted to the lower support structure 42. Thereafter, the fastening member 43 is fastened to the upper support structure 41 and the lower support structure 42. As a result, the upper support structure 41 and the lower support structure 42 are integrated, and the upper fuel support rack 41 and the lower support structure 42 cause the spent fuel storage rack 31 to move to the common base 33 and the horizontal displacement is thereby reduced. Placed in a restrained fixed state.

以上のように構成されたことから、本第３実施形態によれば、第１及び第２実施形態の効果（２）、（３）、（４）及び（５）と同様な効果を奏するほか、次の効果（６）を奏する。   Since it was configured as described above, according to the third embodiment, the same effects as the effects (2), (3), (4), and (5) of the first and second embodiments can be obtained. The following effect (6) is achieved.

（６）第３実施形態の支持構造体３４が上部支持構造体４１及び下部支持構造体４２に分割され、最初に、コモンベース３３の下部支持構造体４２を使用済燃料貯蔵ラック３１の貫通孔３２に挿入させるので、使用済燃料貯蔵ラック３１をコモンベース３３に容易に据え付けることができる。その後、上部支持構造体４１の外側面４１Ａを使用済燃料貯蔵ラック３１の貫通孔３２に嵌合させながら、上部支持構造体４１の内側面４１Ｂをコモンベース３３の下部支持構造体４２に嵌合させ、締結部材４３により上部支持構造体４１及び下部支持構造体４２を締結する。このため、使用済燃料貯蔵ラック３１のコモンベース３３への位置決めを容易かつ確実に実施できる。   (6) The support structure 34 according to the third embodiment is divided into an upper support structure 41 and a lower support structure 42. First, the lower support structure 42 of the common base 33 is used as a through hole of the spent fuel storage rack 31. Therefore, the spent fuel storage rack 31 can be easily installed on the common base 33. Thereafter, the inner side surface 41B of the upper support structure 41 is fitted to the lower support structure 42 of the common base 33 while the outer side surface 41A of the upper support structure 41 is fitted to the through hole 32 of the spent fuel storage rack 31. The upper support structure 41 and the lower support structure 42 are fastened by the fastening member 43. For this reason, the spent fuel storage rack 31 can be easily and reliably positioned on the common base 33.

尚、使用済燃料貯蔵ラック３１の貫通孔３２が少なくとも２つ、上部支持構造体４１、下部支持構造体４２及び締結部材４３が少なくとも２組それぞれ設けられてもよい。この場合には、第２実施形態と同様に、地震時に発生する使用済燃料貯蔵ラック３１の鉛直軸周りの回転をより確実に防止できる。   Note that at least two through holes 32 of the spent fuel storage rack 31 and at least two sets of the upper support structure 41, the lower support structure 42, and the fastening member 43 may be provided. In this case, as in the second embodiment, rotation of the spent fuel storage rack 31 around the vertical axis that occurs during an earthquake can be prevented more reliably.

更に、図９に示すように、上部支持構造体４１の外側面４１Ａの寸法を、使用済燃料貯蔵ラック３１の貫通孔３２の内側寸法よりも小さく形成し、外側面４１Ａに弾性変形可能な金属製のラック用緩衝部材４４を設置し、このラック用緩衝部材４４が使用済燃料貯蔵ラック３１の貫通孔３２の内側面に接触するよう構成されてもよい。この場合には、地震時の衝撃エネルギーがラック用緩衝部材４４により緩衝され吸収されるので、コモンベース３３を使用済燃料貯蔵プール１２のプール底面２０に固定する基礎ボルト１９に作用するせん断力をより一層低減でき、プール底面２０に強度上の余裕度を確保できる。更に、地震により上部支持構造体４１が変形した場合にも、この上部支持構造体４１を容易に交換できる。   Furthermore, as shown in FIG. 9, the outer support surface 41 has an outer surface 41A having a dimension smaller than the inner dimension of the through hole 32 of the spent fuel storage rack 31, and is elastically deformable on the outer surface 41A. A rack cushioning member 44 made of rack may be installed, and the rack cushioning member 44 may be configured to contact the inner surface of the through hole 32 of the spent fuel storage rack 31. In this case, since the impact energy at the time of the earthquake is buffered and absorbed by the rack cushioning member 44, the shear force acting on the foundation bolt 19 that fixes the common base 33 to the pool bottom surface 20 of the spent fuel storage pool 12 is increased. Further reduction can be achieved, and a margin in strength can be secured on the pool bottom surface 20. Furthermore, even when the upper support structure 41 is deformed by an earthquake, the upper support structure 41 can be easily replaced.

［Ｄ］第４実施形態（図１０）
図１０は、第４実施形態における核燃料貯蔵設備が適用された使用済燃料貯蔵設備を示す縦断面図である。この第４実施形態が第１及び第２実施形態と同様な部分については、同一の符号を付すことにより説明を簡略化し、または省略する。 [D] Fourth embodiment (FIG. 10)
FIG. 10 is a longitudinal sectional view showing a spent fuel storage facility to which the nuclear fuel storage facility according to the fourth embodiment is applied. Parts similar to those of the first and second embodiments in the fourth embodiment are denoted by the same reference numerals, and the description is simplified or omitted.

本第４実施形態の核燃料貯蔵設備としての使用済燃料貯蔵設備５０が第１及び第２実施形態と異なる点は、使用済燃料貯蔵ラック３１を支持構造体３４を用いて水平拘束して固定状態で載置するコモンベース５１が、基礎ボルト１９を用いて使用済燃料貯蔵プール１２のプール底面２０に固定されず、隣接するコモンベース５１との間、及び使用済燃料貯蔵プール１２のプール側壁５２との間に配置されたコモンベース用緩衝部材５３により支持された点である。   The spent fuel storage facility 50 as the nuclear fuel storage facility according to the fourth embodiment is different from the first and second embodiments in that the spent fuel storage rack 31 is horizontally restrained using a support structure 34 and fixed. Is not fixed to the pool bottom surface 20 of the spent fuel storage pool 12 using the foundation bolts 19, and between the adjacent common base 51 and the pool side wall 52 of the spent fuel storage pool 12. It is the point supported by the buffer member 53 for common bases arrange | positioned between.

地震時に使用済燃料貯蔵ラック３１に作用する水平方向荷重が支持構造体３４を介してコモンベース５１に作用し、これによりコモンベース５１が水平方向に滑るとき、コモンベース用緩衝部材５３がコモンベース５１の運動エネルギーを吸収し減衰させる。このときの反力は、同等の重量が作用する隣接したコモンベース５１、及び使用済燃料貯蔵プール１２のプール側壁５２で支持される。   When the horizontal load acting on the spent fuel storage rack 31 during an earthquake acts on the common base 51 via the support structure 34, and the common base 51 slides in the horizontal direction, the common base buffer member 53 is Absorbs and attenuates 51 kinetic energy. The reaction force at this time is supported by the adjacent common base 51 on which an equivalent weight acts and the pool side wall 52 of the spent fuel storage pool 12.

以上のように構成されたことから、本第４実施形態によれば、第２実施形態の効果（４）及び（５）と同様な効果を奏するほか、次の効果（７）を奏する。   With the configuration as described above, according to the fourth embodiment, in addition to the same effects as the effects (4) and (5) of the second embodiment, the following effect (7) is achieved.

（７）複数体の使用済燃料集合体１を収納する使用済燃料貯蔵ラック３１がコモンベース５１に複数体、支持構造体３４等を用いて固定状態で載置され、このコモンベース５１が、隣接するコモンベース５１との間、及び使用済燃料貯蔵プール１２のプール側壁５２との間に配置されたコモンベース用緩衝部材５３により支持されている。このため、地震時における使用済燃料貯蔵ラック３１の滑りや浮き上がり、鉛直軸周りの回転、衝突等の複雑な挙動を、コモンベース用緩衝部材５３が緩衝することで確実に防止できる。更に、基礎ボルト１９が存在しないことで、使用済燃料貯蔵プール１２のプール底面２０への損傷を確実に防止でき、このプール底面２０に強度上の余裕度を確保できる。   (7) A spent fuel storage rack 31 for housing a plurality of spent fuel assemblies 1 is placed in a fixed state on the common base 51 using a plurality of bodies, a support structure 34, and the like. It is supported by a common base buffer member 53 disposed between the adjacent common bases 51 and between the pool side walls 52 of the spent fuel storage pool 12. For this reason, it is possible to reliably prevent complicated behavior such as slipping and floating of the spent fuel storage rack 31 at the time of an earthquake, rotation around the vertical axis, collision, and the like by the common base buffer member 53. Furthermore, since the foundation bolt 19 is not present, damage to the pool bottom surface 20 of the spent fuel storage pool 12 can be surely prevented, and a margin in strength can be secured on the pool bottom surface 20.

以上、本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これらの実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができ、また、それらの置き換えや変更は、発明の範囲や要旨に含まれると共に、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. Is included in the scope and gist of the invention, and is included in the invention described in the claims and the equivalents thereof.

例えば、第３実施形態におけるラック用緩衝部材４４（図９）は、第２実施形態における支持構造体３４の外側面と使用済燃料貯蔵ラック３１の貫通孔３２との間に配置して、このラック用緩衝部材４４により使用済燃料貯蔵ラック３１に作用する衝撃エネルギーを吸収してもよい。   For example, the rack cushioning member 44 (FIG. 9) in the third embodiment is disposed between the outer surface of the support structure 34 and the through hole 32 of the spent fuel storage rack 31 in the second embodiment. The shock energy acting on the spent fuel storage rack 31 may be absorbed by the rack buffer member 44.

１ 使用済燃料集合体（核燃料集合体）
１０ 使用済燃料貯蔵設備（核燃料貯蔵設備）
１１ 使用済燃料貯蔵ラック（核燃料貯蔵ラック）
１１Ａ 頭頂部
１２ 使用済燃料貯蔵プール（核燃料貯蔵プール）
１３ セル
１４ 底面
１５Ａ 長辺
１６ コモンベース
１７ ラック固定ボルト
１８Ａ 長辺
１８Ｂ 短辺
１９ 基礎ボルト
２０ プール底面
３０ 使用済燃料貯蔵設備（核燃料貯蔵設備）
３１ 使用済燃料貯蔵ラック（核燃料貯蔵ラック）
３２ 貫通孔
３３ コモンベース
３４ 支持構造体
４０ 使用済燃料貯蔵設備（核燃料貯蔵設備）
４１ 上部支持構造体
４１Ａ 外側面
４１Ｂ 内側面
４２ 下部支持構造体
４３ 締結部材
４４ ラック用緩衝部材
５０ 使用済燃料貯蔵設備（核燃料貯蔵設備）
５１ コモンベース
５２ プール側壁
５３ コモンベース用緩衝部材
Ａ 最大水平変位量
Ｌ 間隔 1 Spent fuel assembly (nuclear fuel assembly)
10 Spent fuel storage facility (nuclear fuel storage facility)
11 Spent fuel storage rack (nuclear fuel storage rack)
11A Head 12 Spent fuel storage pool (nuclear fuel storage pool)
13 cell 14 bottom surface 15A long side 16 common base 17 rack fixing bolt 18A long side 18B short side 19 foundation bolt 20 pool bottom surface 30 spent fuel storage facility (nuclear fuel storage facility)
31 Spent fuel storage rack (nuclear fuel storage rack)
32 Through-hole 33 Common base 34 Support structure 40 Spent fuel storage facility (nuclear fuel storage facility)
41 Upper support structure 41A Outer side surface 41B Inner side surface 42 Lower support structure 43 Fastening member 44 Buffer member 50 for rack Spent fuel storage facility (nuclear fuel storage facility)
51 Common base 52 Pool side wall 53 Buffer member A for common base A Maximum horizontal displacement L Interval

Claims (8)

核燃料貯蔵プールに保管される核燃料集合体を一体ずつ収納するセルが複数配置された核燃料貯蔵ラックと、
複数体の前記核燃料貯蔵ラックを固定状態で載置する長方形形状のコモンベースとを有し、
前記コモンベースは、このコモンベースの長辺に平行な線上で、且つ前記核燃料貯蔵ラックにおける最長の底辺の中央位置に相当する位置に設けられた複数本の基礎ボルトを用いて、前記核燃料貯蔵プールの底面に固定されることを特徴とする核燃料貯蔵設備。 A nuclear fuel storage rack in which a plurality of cells each storing nuclear fuel assemblies stored in the nuclear fuel storage pool are arranged;
A rectangular common base for mounting a plurality of the nuclear fuel storage racks in a fixed state;
The common base uses the plurality of foundation bolts provided on a line parallel to the long side of the common base and at a position corresponding to the center position of the longest bottom of the nuclear fuel storage rack. A nuclear fuel storage facility that is fixed to the bottom surface of the fuel cell. 核燃料貯蔵プールに保管される核燃料集合体を一体ずつ収納するセルが複数配置された核燃料貯蔵ラックを備え、
それぞれが複数体の前記核燃料貯蔵ラックを固定状態で載置するコモンベースを前記核燃料貯蔵プールに複数配置してなり、
前記コモンベースは、隣接するコモンベースとの間、及び前記核燃料貯蔵プールの側壁との間に配置されたコモンベース用緩衝部材により前記核燃料貯蔵プールに支持されることを特徴とする核燃料貯蔵設備。 A nuclear fuel storage rack in which a plurality of cells each storing nuclear fuel assemblies stored in the nuclear fuel storage pool are arranged;
A plurality of common bases each mounting a plurality of the nuclear fuel storage racks in a fixed state are arranged in the nuclear fuel storage pool,
The nuclear fuel storage facility, wherein the common base is supported by the nuclear fuel storage pool by a buffer member for a common base disposed between adjacent common bases and a side wall of the nuclear fuel storage pool. 前記核燃料貯蔵ラックを複数体載置するコモンベースが核燃料貯蔵プールの底面に複数配置される場合、これらのコモンベースの間隔は、地震時に変位する前記核燃料貯蔵ラックの頭頂部における最大水平変位量の少なくとも２倍の寸法に設定されたことを特徴とする請求項１または２に記載の核燃料貯蔵設備。 When a plurality of common bases on which a plurality of the nuclear fuel storage racks are placed are arranged on the bottom surface of the nuclear fuel storage pool, the interval between these common bases is the maximum horizontal displacement at the top of the nuclear fuel storage rack that is displaced during an earthquake. 3. The nuclear fuel storage facility according to claim 1, wherein the nuclear fuel storage facility is set to at least twice the size. 前記核燃料貯蔵ラックは、下部に貫通孔を有し、コモンベースに立設された支持構造体が前記貫通孔に嵌合することで、前記コモンベースに固定状態で載置されるよう構成されたことを特徴とする請求項１または２に記載の核燃料貯蔵設備。 The nuclear fuel storage rack has a through hole in a lower part, and is configured to be mounted in a fixed state on the common base by fitting a support structure standing on the common base into the through hole. The nuclear fuel storage facility according to claim 1 or 2, wherein 前記コモンベースに立設されると共に、核燃料貯蔵ラックに設けられた貫通孔に挿入可能な下部支持構造体と、外側面が前記貫通孔に、内側面が前記下部支持構造体にそれぞれ嵌合可能に設けられた上部支持構造体と、前記下部支持構造体及び前記上部支持構造体を締結する締結部材とを有し、
前記下部支持構造体を前記貫通孔に挿入させた後、前記上部支持構造体を前記貫通孔及び前記下部支持構造体にそれぞれ嵌合させ、前記締結部材により前記上部支持構造体及び前記下部支持構造体を締結することで、前記核燃料貯蔵ラックが前記コモンベースに固定状態で載置されるよう構成されたことを特徴とする請求項１または２に記載の核燃料貯蔵設備。 A lower support structure that is erected on the common base and can be inserted into a through hole provided in a nuclear fuel storage rack, and an outer surface can be fitted into the through hole and an inner surface can be fitted into the lower support structure. An upper support structure provided on the lower support structure and a fastening member for fastening the upper support structure;
After the lower support structure is inserted into the through hole, the upper support structure is fitted into the through hole and the lower support structure, respectively, and the upper support structure and the lower support structure are connected by the fastening member. The nuclear fuel storage facility according to claim 1, wherein the nuclear fuel storage rack is fixedly mounted on the common base by fastening a body. 前記核燃料貯蔵ラックは貫通孔を少なくとも２個備え、コモンベースは、前記貫通孔に嵌合可能な支持構造体、または前記貫通孔に挿入可能な下部支持構造体をそれぞれ少なくとも２個備えたことを特徴とする請求項４または５に記載の核燃料貯蔵設備。 The nuclear fuel storage rack includes at least two through holes, and the common base includes at least two support structures that can be fitted into the through holes or lower support structures that can be inserted into the through holes. The nuclear fuel storage facility according to claim 4 or 5, characterized by the above. 前記支持構造体または上部支持構造体のそれぞれの外側面に弾性変形可能なラック用緩衝部材が設置され、このラック用緩衝部材が核燃料貯蔵ラックの貫通孔の内側面に接触可能に構成されたことを特徴とする請求項４乃至６のいずれか１項に記載の核燃料貯蔵設備。 An elastically deformable rack cushioning member is installed on each outer surface of the support structure or the upper support structure, and the rack cushioning member is configured to be able to contact the inner surface of the through hole of the nuclear fuel storage rack. The nuclear fuel storage facility according to any one of claims 4 to 6. 核燃料集合体を一体ずつ収納するセルが複数配置された核燃料貯蔵ラックを、長方形状のコモンベースに固定状態で複数体載置して核燃料貯蔵プールに設置し、前記核燃料集合体を前記核燃料貯蔵プールに貯蔵する核燃料貯蔵方法であって、
前記コモンベースは、このコモンベースの長辺に平行な線上で、且つ前記核燃料貯蔵ラックにおける最長の底辺の中央位置に相当する位置に設けられた複数本の基礎ボルトを用いて、前記核燃料貯蔵プールの底面に固定されることを特徴とする核燃料貯蔵方法。 A plurality of nuclear fuel storage racks in which a plurality of cells each containing nuclear fuel assemblies are arranged are fixedly mounted on a rectangular common base and installed in the nuclear fuel storage pool, and the nuclear fuel assemblies are installed in the nuclear fuel storage pool. A nuclear fuel storage method for storing in
The common base uses the plurality of foundation bolts provided on a line parallel to the long side of the common base and at a position corresponding to the center position of the longest bottom of the nuclear fuel storage rack. A nuclear fuel storage method characterized by being fixed to the bottom surface of the fuel cell.
JP2014207991A 2014-10-09 2014-10-09 Nuclear fuel storage facility and nuclear fuel storage method Active JP6392067B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014207991A JP6392067B2 (en) 2014-10-09 2014-10-09 Nuclear fuel storage facility and nuclear fuel storage method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014207991A JP6392067B2 (en) 2014-10-09 2014-10-09 Nuclear fuel storage facility and nuclear fuel storage method

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2018074409A Division JP2018141796A (en) 2018-04-09 2018-04-09 Nuclear fuel storage equipment and nuclear fuel storage method

Publications (2)

Publication Number Publication Date
JP2016075652A true JP2016075652A (en) 2016-05-12
JP6392067B2 JP6392067B2 (en) 2018-09-19

Family

ID=55951393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014207991A Active JP6392067B2 (en) 2014-10-09 2014-10-09 Nuclear fuel storage facility and nuclear fuel storage method

Country Status (1)

Country Link
JP (1) JP6392067B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106898395A (en) * 2017-03-14 2017-06-27 北京科瑞华安科技有限公司 A kind of spent fuel screen work seismic safety analysis method
CN107658034A (en) * 2017-10-20 2018-02-02 中国船舶重工集团公司第七〇九研究所 A kind of overturn-preventing spent fuel storage device
JP2019086369A (en) * 2017-11-06 2019-06-06 株式会社東芝 Connector of fuel storage rack and fuel storage rack

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5597600U (en) * 1978-12-27 1980-07-07
JPS6021491A (en) * 1983-07-15 1985-02-02 株式会社日立製作所 Storage facility for used fuel
JPS62190494A (en) * 1986-02-17 1987-08-20 株式会社日立製作所 Spent fuel storage rack
JPH0225734A (en) * 1988-07-14 1990-01-29 Toshiba Corp Floor fixing device for rack

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5597600U (en) * 1978-12-27 1980-07-07
JPS6021491A (en) * 1983-07-15 1985-02-02 株式会社日立製作所 Storage facility for used fuel
JPS62190494A (en) * 1986-02-17 1987-08-20 株式会社日立製作所 Spent fuel storage rack
JPH0225734A (en) * 1988-07-14 1990-01-29 Toshiba Corp Floor fixing device for rack

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106898395A (en) * 2017-03-14 2017-06-27 北京科瑞华安科技有限公司 A kind of spent fuel screen work seismic safety analysis method
CN106898395B (en) * 2017-03-14 2019-01-01 北京科瑞华安科技有限公司 A kind of spent fuel screen work seismic safety analysis method
CN107658034A (en) * 2017-10-20 2018-02-02 中国船舶重工集团公司第七〇九研究所 A kind of overturn-preventing spent fuel storage device
CN107658034B (en) * 2017-10-20 2024-03-29 中国船舶重工集团公司第七一九研究所 Anti-overturning spent fuel storage device
JP2019086369A (en) * 2017-11-06 2019-06-06 株式会社東芝 Connector of fuel storage rack and fuel storage rack

Also Published As

Publication number Publication date
JP6392067B2 (en) 2018-09-19

Similar Documents

Publication Publication Date Title
US10847274B2 (en) Earthquake-resistant fuel storage rack system for fuel pools in nuclear plants
JP6392067B2 (en) Nuclear fuel storage facility and nuclear fuel storage method
KR100956487B1 (en) Damping device equipped with seismic isolaion devices
KR102565253B1 (en) Reactor module support structure
JP5709400B2 (en) Nuclear fuel storage rack and nuclear fuel storage rack group
JP2007262833A (en) Viscous system vibration damper and base isolation building having this damper
JP2018141796A (en) Nuclear fuel storage equipment and nuclear fuel storage method
KR101331489B1 (en) Bridge bearing for earthquake isolation
JP5546262B2 (en) Nuclear fuel storage rack
JP5959843B2 (en) Rack support structure
WO2015122419A1 (en) Storage rack
JP2016164352A (en) Anti-flying object protective equipment
JP2017026388A (en) Reinforcement structure of fuel storage rack
KR20110072412A (en) Seismic isolating apparatus
JP2009263880A (en) Multistory parking system assembled inside building void and horizontal support device therefor
JP2009115673A (en) Cask storage pedestal
JP7178280B2 (en) Restraint device, rack for nuclear fuel storage, and method for restraining rack for nuclear fuel storage
JP6960379B2 (en) Storage container and storage method for radioactive materials or containers containing radioactive materials
JP5060323B2 (en) Metal closed switchgear
JP2016199910A (en) Seismic isolation structure and seismic isolation repair method of existing building
JP5234406B2 (en) Seismic isolation device safety device and laminated rubber type seismic isolation device having the safety device
CN218667995U (en) Anti-seismic structure for building engineering
JP6654986B2 (en) Racks for nuclear fuel storage
JP7462939B2 (en) Displacement limiting device
JP5987019B2 (en) Nuclear fuel storage rack and nuclear fuel storage rack group

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20170314

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20171127

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20171128

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20180126

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20180206

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20180409

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20180724

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20180822

R150 Certificate of patent or registration of utility model

Ref document number: 6392067

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150