JPS58144789A - Fuel storage rack for reactor - Google Patents
Fuel storage rack for reactorInfo
- Publication number
- JPS58144789A JPS58144789A JP57027305A JP2730582A JPS58144789A JP S58144789 A JPS58144789 A JP S58144789A JP 57027305 A JP57027305 A JP 57027305A JP 2730582 A JP2730582 A JP 2730582A JP S58144789 A JPS58144789 A JP S58144789A
- Authority
- JP
- Japan
- Prior art keywords
- storage rack
- fuel storage
- reactor
- amorphous alloy
- 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
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
- Fuel-Injection Apparatus (AREA)
- Packaging Of Machine Parts And Wound Products (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】
本発明は高密度化を図つ九原子デ用燃料w薦ラックに関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-density fuel rack for nine-atomic diesel engines.
原子カプラントにおいては原子デ炉心から取出された使
用済燃料は再処理するまでの間一時保管される。近年使
用済燃料プール内のスペースを有効に利用するため、貯
蔵燃料間の間隔を短くする改良がなされてお艶、この思
想に基づいたラックを高密度ラックと称している。ラッ
クは燃料が相互間の影響により臨界に達しない構造にす
る必要がわ)、燃料間の間隔を蚊くする九めに燃料間に
中性子吸収材を入れている。又、ラックは燃料を貯蔵す
るので、耐震的に重要な機器であり、その強度は十分で
なければならない。In nuclear couplants, spent fuel removed from the reactor core is temporarily stored until it is reprocessed. In recent years, improvements have been made to shorten the distance between stored fuels in order to effectively utilize the space within the spent fuel pool, and racks based on this idea are called high-density racks. The rack needs to be structured so that the fuels do not reach criticality due to mutual influence), and a neutron absorbing material is inserted between the fuels to minimize the spacing between them. In addition, since the rack stores fuel, it is an important piece of equipment in terms of earthquake resistance, and its strength must be sufficient.
従来のラックは、籐1図および第2図に示すように、角
mlを集合させて上部補強部材2、中間補強部材3,4
、ベース5によ抄一体とされている。又角筒lは外筒6
、内筒7、中性子吸収材8、スペーサー9により構成さ
れ三重構造となっている。ここで中性子吸収材としては
ボラル(B4Cとアルミニ9ムの看末を混合し、焼結し
たもの)等が用いられている。このようなラックの場合
、角筒の製作公差が著しくなり、製作性が悪く、角筒の
上端、下端でシール溶接を必要とし、さらに肉厚が大き
くなり重量4増加するのでラックの高密度化を図ること
ができない。As shown in Fig. 1 and Fig. 2, in the conventional rack, corners ml are assembled to form an upper reinforcing member 2, middle reinforcing members 3 and 4.
, is considered to be an integral part of Base 5. Also, the square tube l is the outer tube 6.
, an inner cylinder 7, a neutron absorber 8, and a spacer 9, and has a triple structure. Here, as the neutron absorbing material, Boral (a mixture of B4C and aluminum 9m and sintered) is used. In the case of such a rack, the manufacturing tolerance of the square tube becomes significant, the manufacturing efficiency is poor, seal welding is required at the top and bottom ends of the square tube, and the wall thickness increases and the weight increases by 4, so it is necessary to increase the density of the rack. It is not possible to aim for
本発明の目的は、容易に高密度化を図ることができる原
子炉用燃料針鼠ラックを提供することにある。An object of the present invention is to provide a fuel rack for a nuclear reactor that can be easily increased in density.
本発明は、筒体の外周に中性子吸収材からなる長尺材を
巻回することによって、従来必要とされてい友外筒を不
豐とし、製作を容易にかつ肉厚を薄くするようにしたも
のである。The present invention eliminates the need for a conventional outer cylinder by winding a long material made of a neutron absorbing material around the outer periphery of the cylinder, making it easier to manufacture and reducing the wall thickness. It is something.
以下、添付vAIijに基づいて本発明の詳細な説明す
る。Hereinafter, the present invention will be described in detail based on the attached vAIij.
第3図〜第7図において、角11i1100外周に非晶
質合金薄帯11がらせん状に巻回されている。In FIGS. 3 to 7, an amorphous alloy ribbon 11 is spirally wound around the outer periphery of a corner 11i1100.
非晶質合金薄帯の巻回状態は、第5図に示すように多層
状に巻回され、各層間では非晶質合金薄帯11同志は互
いに重ね合わないようになっている。The amorphous alloy ribbon is wound in a multilayered manner as shown in FIG. 5, and the amorphous alloy ribbons 11 do not overlap each other between the layers.
又角筒lOのコーナ一部は丸く形成されており、このコ
ーナ一部分において巻回された非晶質合金薄帯11はビ
ン12によって角筒lOで固定されている。A part of the corner of the rectangular cylinder lO is formed round, and the amorphous alloy ribbon 11 wound around this corner part is fixed to the rectangular cylinder lO by a bottle 12.
本実施例において、角筒10の外周に非晶質合金薄11
11からなる中性子吸収材が41囲されている。非晶質
合金は極めて薄い帯状に形成することかで龜、靭性な有
するとともに耐腐食性が優れている。例えば非晶質合金
薄帯を約550の純水と常時接触させても腐食は全く発
生しない。従って非晶質合金薄帯を角筒10に巻回する
際、応力(引張す応力)をかけることができるので密に
巻くことができ作業も簡単である。又燃料貯蔵ラックと
して用いる場合にも非晶質合金薄帯の腐食は問題となら
ない。次に非晶質合金薄帯は中性子吸収能を有すること
が必要であるが、一般に非晶質合金は非晶化する九めに
B、P、C,S iの1種又は2s以上を含有し、これ
らを含む溶融金属を液体状部の11超急冷#固させるこ
とによって形成される。特にボロンは中性子吸収能が高
く、この場合薄板中のボロンの分布は超急冷であるため
全く均一であり、中性子吸収能が高い。さらに一般に中
性子吸収材中に一関が形成されていると、隙間腐食が発
生しやすいが、第5図に示すような非晶質合金薄帯11
の巻回状態では一関が発生しないので一関腐食の防止効
果が大きい。In this embodiment, an amorphous alloy thin layer 11 is provided on the outer periphery of the rectangular tube 10.
41 neutron absorbers consisting of 11 are surrounded. Amorphous alloys can be formed into extremely thin strips and have excellent toughness and corrosion resistance. For example, even if an amorphous alloy ribbon is constantly brought into contact with approximately 550% pure water, no corrosion will occur. Therefore, when winding the amorphous alloy ribbon around the rectangular tube 10, stress (tensile stress) can be applied, so it can be tightly wound and the work is simple. Also, when used as a fuel storage rack, corrosion of the amorphous alloy ribbon does not pose a problem. Next, it is necessary for the amorphous alloy ribbon to have neutron absorption ability, but in general, amorphous alloys contain one or more of B, P, C, and Si or 2s or more before becoming amorphous. It is formed by ultra-quenching and solidifying molten metal containing these in a liquid state. In particular, boron has a high neutron absorption ability, and in this case, the distribution of boron in the thin plate is completely uniform because it is ultra-quenched, and the neutron absorption ability is high. Furthermore, in general, crevice corrosion is likely to occur when a single barrier is formed in a neutron absorbing material, but as shown in FIG.
Since Ichinoseki does not occur in the wound state of , it is highly effective in preventing Ichinoseki corrosion.
第7図は第3図〜第6図に示す角筒を用い九原子炉用貯
賊ラックの平面図を示す。第7図において、上部補強材
20間に非晶質合金薄帯11七巻回し九角筒10(11
7図中ではムで示す)を配列させ、これらの角筒100
間に交互に非晶質合金薄帯11を巻回していない角筒・
10(第7図中ではBで示す)を配列している。このよ
うな角筒10の配列において、各角筒10のコーナ一部
は丸く形成されているのでビン12によっても制約され
ることなく、各角筒10のコーナー5taIIさせるこ
とができる。各角筒の燃料間には中性子吸収材が介在す
ることになるので燃料の未臨界を保つことかで自る。FIG. 7 shows a plan view of a storage rack for nine nuclear reactors using the rectangular tubes shown in FIGS. 3 to 6. In FIG. 7, the amorphous alloy ribbon 11 is wound seven times between the upper reinforcing material 20 and the nine-sided tube 10 (11
7) are arranged, and these rectangular tubes 100 are arranged.
A rectangular tube in which amorphous alloy ribbons 11 are not wound alternately between the tubes.
10 (indicated by B in FIG. 7) are arranged. In such an arrangement of the rectangular tubes 10, a portion of the corner of each rectangular tube 10 is formed round, so that the corner 5taII of each rectangular tube 10 can be formed without being restricted by the bottle 12. Since a neutron absorbing material is interposed between the fuel in each rectangular tube, it is possible to maintain the subcriticality of the fuel.
上記実施例において、非晶質合金からなゐ薄帯な用いた
例を示し九が、非晶質合金からなる線材を角筒、に巻回
して4よい。ただし巻回時の作業性および隙間形成の防
止の点からは薄帯の方が有利である。さらに角筒に41
回する部材は非晶質合金に限らず、中性子吸収能を有し
、巻回作業上支障とならない強度および靭性含有する部
材であれば使用することができる。In the above embodiment, a thin ribbon made of an amorphous alloy is used, and a wire made of an amorphous alloy is wound around a rectangular tube. However, thin strips are more advantageous in terms of workability during winding and prevention of gap formation. Furthermore, 41 in the square tube
The member to be rotated is not limited to an amorphous alloy, but any member can be used as long as it has a neutron absorption ability and has strength and toughness that do not interfere with the winding operation.
以上のように本発明によれば、原子炉用燃料貯蔵ラック
を構成する筒体の外周に中性子吸収材を巻回するのみで
足りるから、作業が容易であり、かつ外筒を必要としな
いので筒体の小型化および重量減少によって高密度化を
図ることができる。As described above, according to the present invention, it is sufficient to simply wrap the neutron absorbing material around the outer periphery of the cylindrical body constituting the fuel storage rack for a nuclear reactor, so the work is easy and an outer cylinder is not required. High density can be achieved by reducing the size and weight of the cylinder.
第1図は従来の原子炉用燃料貯蔵ラックの正面図、第2
図は第1図のラックに用いられる角筒の断面図、第3図
は本発明における角筒の一例を示す断面図、第4図は第
3図の平面図、第5図は第31iAのA−A線に沿う拡
大断面図、第6図は第4図の豪部拡大図、第7図は本発
明の一例を示す燃料計Xラックの平面図である。
10・・・角筒、11・・・非晶質合金薄帯、12・・
・ビン。
第2図
第4図Figure 1 is a front view of a conventional nuclear reactor fuel storage rack;
The figure is a sectional view of a square tube used in the rack of FIG. 1, FIG. 3 is a sectional view showing an example of a square tube in the present invention, FIG. 4 is a plan view of FIG. 3, and FIG. FIG. 6 is an enlarged sectional view taken along the line A-A, FIG. 6 is an enlarged view of the Australian part of FIG. 4, and FIG. 7 is a plan view of a fuel gauge X rack showing an example of the present invention. 10... Square tube, 11... Amorphous alloy ribbon, 12...
·bottle. Figure 2 Figure 4
Claims (1)
整立保持する丸めの筒体を備えた原を炉用燃料貯蔵ラッ
クにおいて、前記筒体の外周に中性子吸収材の長尺材を
巻回したことを特徴とする原子炉用燃料貯蔵ラック。 2、特許請求の範囲第1項において、前記長尺材が、非
晶質合金薄帯であることを特徴とする原子炉用燃料貯蔵
ラック。 3.4111!FllI求の範囲第1項又は嬉雪項にお
いて、前記長尺材をらせん状に複数枚重ね合わせて巻回
し九ことを特徴とする原子炉用燃料貯蔵ラック。[Scope of Claims] 1. In a reactor fuel storage rack, a raw material equipped with a round cylindrical body that holds a plurality of fuel-electric combinations in an upright state at predetermined intervals is placed in a reactor fuel storage rack, and neutrons are applied to the outer periphery of the cylindrical body. A nuclear reactor fuel storage rack characterized by winding a long length of absorbent material. 2. The fuel storage rack for a nuclear reactor according to claim 1, wherein the elongated material is an amorphous alloy ribbon. 3.4111! A fuel storage rack for a nuclear reactor, characterized in that a plurality of the elongated materials are piled up in a helical shape and wound nine times in the first item or the snowy item of the FIII requirement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57027305A JPS58144789A (en) | 1982-02-24 | 1982-02-24 | Fuel storage rack for reactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57027305A JPS58144789A (en) | 1982-02-24 | 1982-02-24 | Fuel storage rack for reactor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58144789A true JPS58144789A (en) | 1983-08-29 |
JPS645675B2 JPS645675B2 (en) | 1989-01-31 |
Family
ID=12217371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57027305A Granted JPS58144789A (en) | 1982-02-24 | 1982-02-24 | Fuel storage rack for reactor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58144789A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012058155A (en) * | 2010-09-10 | 2012-03-22 | Toshiba Corp | Used fuel storage rack |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5178705A (en) * | 1974-12-28 | 1976-07-08 | Tohoku Daigaku Kinzoku Zairyo | |
JPS623399A (en) * | 1985-06-28 | 1987-01-09 | シャープ株式会社 | Window acounting machine |
-
1982
- 1982-02-24 JP JP57027305A patent/JPS58144789A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5178705A (en) * | 1974-12-28 | 1976-07-08 | Tohoku Daigaku Kinzoku Zairyo | |
JPS623399A (en) * | 1985-06-28 | 1987-01-09 | シャープ株式会社 | Window acounting machine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012058155A (en) * | 2010-09-10 | 2012-03-22 | Toshiba Corp | Used fuel storage rack |
Also Published As
Publication number | Publication date |
---|---|
JPS645675B2 (en) | 1989-01-31 |
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