JP2000147194A - Divided shielding lid for storage house of radioactive substance and method for attachment/detachment of the same - Google Patents
Divided shielding lid for storage house of radioactive substance and method for attachment/detachment of the sameInfo
- Publication number
- JP2000147194A JP2000147194A JP10323607A JP32360798A JP2000147194A JP 2000147194 A JP2000147194 A JP 2000147194A JP 10323607 A JP10323607 A JP 10323607A JP 32360798 A JP32360798 A JP 32360798A JP 2000147194 A JP2000147194 A JP 2000147194A
- Authority
- JP
- Japan
- Prior art keywords
- loading
- unloading
- lid member
- lid
- opening
- 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
- Measurement Of Radiation (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、原子力発電所や再
処理工場等における放射性物質の貯蔵に使用される放射
性物質用ピット式またはサイロ式の貯蔵庫等の分割式遮
蔽蓋およびその着脱方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radioactive material pit-type or silo-type storage-type storage shield used for storing radioactive materials in a nuclear power plant, a reprocessing plant, and the like, and a method of attaching and detaching the same. It is.
【0002】[0002]
【従来の技術】一般に、放射性物質用ピット式またはサ
イロ式の貯蔵庫は、放射性物質をクレーン装置に懸吊し
ながら搬入および搬出することができるように、放射性
物質の搬入出口を上面に有している。そして、貯蔵時に
おいては、コンクリート等を大きな厚みで形成した遮蔽
蓋で搬入出口が塞がれることによって、放射線の漏洩が
十分に低減されている。2. Description of the Related Art Generally, a pit type or silo type storage for radioactive material has a radioactive material loading / unloading port on its upper surface so that the radioactive material can be carried in and out while being suspended from a crane device. I have. In addition, during storage, the leakage of radiation is sufficiently reduced by closing the loading / unloading port with a shielding cover made of concrete or the like having a large thickness.
【0003】ところで、貯蔵庫の搬入出口が大きな開口
面積である場合には、一体物の遮蔽蓋であると、相当の
重量物になるため、通常、複数個の蓋部材に分割可能な
分割式遮蔽蓋を用いて搬入出口の開閉に用いるクレーン
等が過大になることを避けている。この際、分割式遮蔽
蓋の接合部は、図35に示すように、各蓋部材52端面
が直線状に形成されていると、隣接する蓋部材52の端
面同士の隙間から放射線が55の矢符方向に漏洩する。[0003] In the case of a large opening area at the loading / unloading opening of the storage, a single-piece shielding lid becomes considerably heavy, so that a dividing type shielding lid which can be divided into a plurality of lid members is usually used. The lid is used to prevent the crane used for opening and closing the loading / unloading port from becoming too large. At this time, as shown in FIG. 35, when the end face of each lid member 52 is formed in a straight line as shown in FIG. Leaks in the sign direction.
【0004】従って、従来の分割式遮蔽蓋は、図34
(a)〜(c)に示すように、各蓋部材52の端面を段
状に形成し、搬入出口51aにおける端部側の蓋部材5
2の段部を中央側の蓋部材52の段部で押さえ付けるよ
うに構成することによって、貯蔵時における放射性物質
の漏洩が低減されている。そして、このように構成され
た分割式遮蔽蓋は、各蓋部材52の着脱作業が下記の手
順で行われることよって、放射性物質53の搬入時およ
び搬出時における放射線の漏洩も低減されている。[0004] Therefore, the conventional split-type shielding lid is shown in FIG.
As shown in (a) to (c), the end surface of each lid member 52 is formed in a step shape, and the lid member 5 on the end portion side in the loading / unloading port 51a.
The configuration in which the second step is pressed by the step of the central lid member 52 reduces leakage of the radioactive substance during storage. The split shield lid thus configured also has a reduced leakage of radiation when the radioactive substance 53 is loaded and unloaded by performing the following procedure for attaching and detaching the lid members 52.
【0005】即ち、先ず、中央部のA位置に存在する蓋
部材52を抜脱した後、B位置およびC位置の蓋部材5
2を抜脱する。そして、第1収容部および第2収容部
に対する放射性物質53の搬入出をそれぞれ行った
後、C位置の蓋部材52を装着し、第3収容部に対す
る放射性物質53の搬入出を行う。That is, first, after the cover member 52 existing at the position A at the center is removed, the cover members 5 at the positions B and C are removed.
Remove 2 Then, after carrying in / out the radioactive substance 53 to / from the first storage section and the second storage section, the cover member 52 at the position C is attached, and the radioactive substance 53 is carried in / out to the third storage section.
【0006】次に、B位置の蓋部材52を装着する一
方、D位置およびE位置の蓋部材52を抜脱し、第4収
容部および第5収容部に対する放射性物質53の搬
入出をそれぞれ行う。そして、E位置の蓋部材52を装
着し、第6収容部に対する放射性物質53の搬入出を
行った後、D位置の蓋部材52を装着する。この後、第
7位置に対する放射性物質53の搬入出を行った後、
A位置の蓋部材52を装着することによって、搬入出口
51aの一部を常に閉じた状態で全ての放射性物質53
の搬入出を完了することが可能になっている。尚、図3
4(c)の段構造(Z部)は、多くの例があるが、本発
明の要件ではないので説明を省略する。Next, while attaching the cover member 52 at the position B, the cover members 52 at the position D and the position E are withdrawn, and the radioactive substance 53 is carried into and out of the fourth and fifth storage sections, respectively. Then, the cover member 52 at the position E is mounted, and after the radioactive substance 53 is carried in and out of the sixth storage portion, the cover member 52 at the position D is mounted. Then, after carrying in and out of the radioactive substance 53 to the seventh position,
By mounting the cover member 52 at the position A, all the radioactive substances 53 are kept in a state where a part of the carry-in / out port 51a is always closed.
Can be completed. FIG.
Although there are many examples of the step structure (Z portion) of 4 (c), since it is not a requirement of the present invention, the description is omitted.
【0007】[0007]
【発明が解決しようとする課題】しかしながら、上記従
来の構成および着脱手順では、貯蔵庫本体51の両端部
の収容部(第1収容部や第4収容部)に対して放射
性物質53を搬入出する際に、中央部(A位置)から端
部(C位置やE位置)までの3枚の蓋部材52を抜脱す
る必要があるため、搬入出口51aが必要以上に大きな
面積で開口することにより放射線の漏洩を十分に低減す
ることができない。そして、放射線の漏洩を十分に低減
できないと、貯蔵庫本体51の上方における空間線量率
の上昇を招来するという放射線管理上好ましくない事態
が生じると共に、放射性物質53の搬入出中にクレーン
装置が故障した場合のように、オペレータが放射性雰囲
気中で蓋部材52を装着する必要が生じた場合に、被曝
量の増大を招来するという問題が生じる。However, in the above-described conventional configuration and the attaching / detaching procedure, the radioactive substance 53 is carried in and out of the storage sections (the first storage section and the fourth storage section) at both ends of the storage main body 51. At this time, it is necessary to remove the three lid members 52 from the center (position A) to the ends (position C and position E), so that the carry-in / out port 51a is opened with an unnecessarily large area. Radiation leakage cannot be reduced sufficiently. If the radiation leakage cannot be sufficiently reduced, an unfavorable situation in radiation management, which causes an increase in the air dose rate above the storage body 51, occurs, and the crane device breaks down during the loading and unloading of the radioactive substance 53. As in the case, when the operator needs to mount the lid member 52 in a radioactive atmosphere, there is a problem that the exposure dose is increased.
【0008】さらに、従来においては、貯蔵庫本体51
の第1収容部に対する搬入出のみを行う場合であって
も、中央部(A位置)から端部(C位置やE位置)まで
の3枚の蓋部材52を着脱操作する必要があるため、蓋
部材52の開閉作業に無駄が生じ易いという問題があ
る。Further, conventionally, the storage body 51
Even if only the loading / unloading of the first storage section is performed, the three lid members 52 from the center (position A) to the ends (position C and position E) need to be attached and detached. There is a problem in that the opening and closing work of the lid member 52 tends to be wasteful.
【0009】また、従来の分割式遮蔽蓋では、蓋部材5
2が放射性物質53の搬入出時に障害とならないよう
に、蓋部材52のサイズを放射性物質53に対応させよ
うとすると、中央部のA位置に存在する蓋部材52が他
の蓋部材52よりも大型化し易い。そして、この蓋部材
52の大型化は、蓋部材52や放射性物質53を運搬す
るクレーン装置を大型化させる必要を生じさせる。さら
に、搬入出口51aの開口面積が大きくなると、多数の
蓋部材52を仮置きするためのスペースが必要になる。
従って、従来においては、クレーン装置の大型化や仮置
き用の大きなスペースが必要となって設備コストが増大
するという問題がある。Further, in the conventional split type shielding lid, the lid member 5
When the size of the cover member 52 is made to correspond to the radioactive material 53 so that the cover member 52 does not become an obstacle when the radioactive material 53 is carried in and out, the cover member 52 located at the position A in the center portion is more than the other cover members 52. Easy to increase in size. The increase in the size of the lid member 52 causes a need to increase the size of the crane device that transports the lid member 52 and the radioactive substance 53. Further, when the opening area of the loading / unloading port 51a becomes large, a space for temporarily placing a large number of lid members 52 is required.
Therefore, in the related art, there is a problem that the crane device is increased in size and a large space for temporary placement is required, thereby increasing the equipment cost.
【0010】そこで、本発明は、比較的に小型のクレ
ーン装置で放射性物質53の搬入出を行うことができる
と共に、放射性物質53の搬入出時における放射線の
漏洩を十分に低減することができるように、搬入出口5
1aの開口面積を必要最小限に抑制し、さらに蓋部材
52の着脱操作の回数を減少させた状態で放射性物質5
3の搬入出を行うことができる分割式遮蔽蓋およびその
着脱方法を提供しようとするものである。Therefore, the present invention enables a relatively small crane device to carry in and out the radioactive material 53 and to sufficiently reduce the radiation leakage when the radioactive material 53 is carried in and out. At the entrance 5
In the state where the opening area of 1a is suppressed to a necessary minimum and the number of attaching / detaching operations of the lid member 52 is reduced,
It is an object of the present invention to provide a split type shielding lid capable of carrying in and out of No. 3 and a method of attaching and detaching the same.
【0011】[0011]
【課題を解決するための手段】上記課題を解決するため
に、請求項1の発明は、貯蔵庫本体の単一開口区画毎の
搬入出口に実施可能なものである。即ち、上面側から下
面側にかけて所定量単位で減少された段部を一端面およ
び他端面にそれぞれ備えた主蓋部材と、上面側から下面
側にかけて所定量単位で減少および増加された段部を一
端面および他端面にそれぞれ備えた複数の副蓋部材とを
有し、これら主蓋部材および副蓋部材を段部同士を重複
させながら配列することにより貯蔵庫本体の搬入出口を
塞ぐ分割式遮蔽蓋において、前記主蓋部材は、各段部ご
とに層状に分割された層状主部材からなり、前記副蓋部
材は、各段部ごとに層状に分割された層状副部材からな
ることを特徴としている。In order to solve the above-mentioned problems, the invention according to claim 1 can be implemented at a loading / unloading port for each single opening section of the storage main body. That is, a main lid member having a stepped portion reduced by a predetermined amount from the upper surface side to the lower surface side on each of one end surface and the other end surface, and a stepped portion reduced and increased by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-cover members provided on one end surface and the other end surface, respectively, and a split-type shielding cover for closing a carry-in / out port of the storage main body by arranging the main cover member and the sub-cover member while overlapping the steps. In the above, the main lid member is composed of a layered main member divided into layers for each step portion, and the sub lid member is composed of a layered sub member divided into layers for each step portion. .
【0012】上記の構成によれば、後述の請求項5によ
る方法で単一開口区画毎に搬入出口の開口面積を必要最
小限に抑制しながら放射性物質の搬入出を行うことがで
き、さらに、主蓋部材および副蓋部材が層状主部材およ
び層状副部材で分割されるため、これら層状主部材およ
び層状副部材を運搬の単位として主蓋部材および副蓋部
材を着脱することができる。従って、層状部材が製作
し易い平板であり、主蓋部材や副蓋部材よりも軽量の
層状主部材および層状副部材に対応したクレーン装置を
用いて放射性物質の搬入出を行うことができるため、設
備コストを低減することができる。According to the above construction, the radioactive substance can be carried in and out while the opening area of the carry-in / out port is minimized for each single opening section by the method according to claim 5 described later. Since the main lid member and the sub lid member are divided by the layered main member and the layered sub member, the main lid member and the sub lid member can be attached and detached by using the layered main member and the layered sub member as a unit of transportation. Therefore, since the layered member is a flat plate that is easy to manufacture, the loading and unloading of radioactive materials can be performed using a crane device corresponding to the layered main member and the layered sub-member that are lighter than the main lid member and the sub-lid member. Equipment costs can be reduced.
【0013】請求項2の発明は、上面側から下面側にか
けて所定量単位で減少された段部を一端面および他端面
にそれぞれ備えた主蓋部材と、上面側から下面側にかけ
て所定量単位で減少および増加された段部を一端面およ
び他端面にそれぞれ備えた複数の副蓋部材とを有し、こ
れら主蓋部材および副蓋部材を段部同士を重複させなが
ら配列することにより貯蔵庫本体の搬入出口を塞ぐ分割
式遮蔽蓋において、前記主蓋部材は、前記副蓋部材と同
一幅で各段部ごとに層状に分割された層状主部材と、前
記主蓋部材から前記副蓋部材の幅を差し引いた逆凸型部
材とからなり、前記副蓋部材は、各段部ごとに層状に分
割された層状副部材からなることを特徴としている。According to a second aspect of the present invention, there is provided a main cover member provided with a stepped portion on one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface to the lower surface, and a main cover member having a predetermined amount from the upper surface to the lower surface. A plurality of sub-lid members provided with the reduced and increased step portions on one end surface and the other end surface, respectively, and by arranging these main lid members and sub-lid members while overlapping the step portions, In the division type shielding lid that closes the loading / unloading port, the main lid member is a layered main member having the same width as the sub lid member and divided into layers at each step, and a width of the sub lid member from the main lid member. , And the sub-lid member is formed of a layered sub-member divided into layers at each step.
【0014】上記の構成によれば、後述の請求項5によ
る方法で単一開口区画毎に搬入出口の開口面積を必要最
小限に抑制しながら放射性物質の搬入出を行うことがで
き、さらに、主蓋部材が層状主部材および逆凸型部材で
分割されると共に、副蓋部材が層状副部材で分割され
る。従って、逆凸型部材の他は全て同一寸法の平板と
することができて製作し易い。主蓋部材や副蓋部材よ
りも軽量の層状主部材、層状副部材および逆凸型部材に
対応したクレーン装置を用いて放射性物質の搬入出を行
うことができるため、設備コストを低減することができ
る。According to the above construction, the radioactive substance can be carried in and out while the opening area of the carry-in / out port is minimized for each single opening section by the method according to claim 5 described later. The main lid member is divided by the layered main member and the inverted convex member, and the sub lid member is divided by the layered sub member. Therefore, all of the members except the inverted convex member can be formed as flat plates having the same dimensions, which facilitates manufacture. Since it is possible to carry in and out the radioactive material using a crane device corresponding to the layered main member, the layered sub member, and the inverted convex member which are lighter than the main lid member and the sub lid member, it is possible to reduce equipment costs. it can.
【0015】請求項3の発明は、上面側から下面側にか
けて所定量単位で減少された段部を一端面および他端面
にそれぞれ備えた主蓋部材と、上面側から下面側にかけ
て所定量単位で減少および増加された段部を一端面およ
び他端面にそれぞれ備えた複数の副蓋部材とを有し、こ
れら主蓋部材および副蓋部材を段部同士を重複させなが
ら配列することにより貯蔵庫本体の搬入出口を塞ぐ分割
式遮蔽蓋において、前記主蓋部材は、各段部ごとに層状
に分割された層状主部材からなり、前記副蓋部材は、各
段部が一体的に形成されていることを特徴としている。According to a third aspect of the present invention, there is provided a main cover member provided with a stepped portion on one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface side to the lower surface side, and by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-lid members provided with the reduced and increased step portions on one end surface and the other end surface, respectively, and by arranging these main lid members and sub-lid members while overlapping the step portions, In the division type shielding lid for closing the loading / unloading port, the main lid member is composed of a layered main member divided into layers for each step portion, and the sub lid member is formed integrally with each step portion. It is characterized by.
【0016】上記の構成によれば、後述の請求項6ない
し10の何れか1項による方法で、搬入出口の開口面積
を必要最小限に抑制しながら放射性物質の搬入出を行う
ことができ、さらに、一般に最も大型となる主蓋部材が
層状主部材で分割されるため、主蓋部材よりも軽量の層
状主部材や副蓋部材に対応したクレーン装置を用いて放
射性物質の搬入出を行うことができることから設備コス
トを低減することができる。According to the above configuration, the radioactive substance can be carried in and out while the opening area of the carry-in / out port is suppressed to a necessary minimum by the method according to any one of claims 6 to 10 described below. Furthermore, since the main lid member, which is generally the largest, is divided by the layered main member, the loading and unloading of radioactive materials is performed using a crane device corresponding to the layered main member and the sub-lid member that are lighter than the main lid member. Therefore, equipment costs can be reduced.
【0017】請求項4の発明は、上面側から下面側にか
けて所定量単位で減少された段部を一端面および他端面
にそれぞれ備えた主蓋部材と、上面側から下面側にかけ
て所定量単位で減少および増加された段部を一端面およ
び他端面にそれぞれ備えた複数の副蓋部材とを有し、こ
れら主蓋部材および副蓋部材を段部同士を重複させなが
ら配列することにより貯蔵庫本体の搬入出口を塞ぐ分割
式遮蔽蓋において、前記主蓋部材は、前記副蓋部材と同
一形状に形成された第1部材と、前記主蓋部材から前記
第1部材の幅を差し引いた逆凸型部材とからなり、前記
副蓋部材は、各段部が一体的に形成されていることを特
徴としている。According to a fourth aspect of the present invention, there is provided a main cover member having a stepped portion on one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface to the lower surface, and a main unit having a predetermined amount from the upper surface to the lower surface. A plurality of sub-lid members provided with the reduced and increased step portions on one end surface and the other end surface, respectively, and by arranging these main lid members and sub-lid members while overlapping the step portions, In the division type shielding lid for closing the loading / unloading port, the main lid member is a first member formed in the same shape as the sub lid member, and an inverted convex member obtained by subtracting a width of the first member from the main lid member. The sub lid member is characterized in that each step is integrally formed.
【0018】上記の構成によれば、後述の請求項6ない
し10の何れか1項による方法で、搬入出口の開口面積
を必要最小限に抑制しながら放射性物質の搬入出を行う
ことができ、さらに、主蓋部材が副蓋部材と同一形状の
主部材と逆凸型部材とに分割される。従って、主蓋部材
よりも軽量の主部材、逆凸型部材および副蓋部材に対応
したクレーン装置を用いて放射性物質の搬入出を行うこ
とができるため、設備コストを低減することができる。According to the above configuration, the radioactive material can be carried in and out while the opening area of the carry-in / out port is suppressed to a minimum by the method according to any one of claims 6 to 10 described below. Further, the main lid member is divided into a main member having the same shape as the sub lid member and an inverted convex member. Therefore, the loading and unloading of the radioactive material can be performed by using a crane device corresponding to the main member, the inverted convex member, and the sub-lid member, which is lighter than the main lid member, so that equipment costs can be reduced.
【0019】請求項5の発明は、請求項1または2記載
の分割式遮蔽蓋の着脱方法であって、前記主蓋部材を抜
脱して待機位置に仮置きすることによって、該主蓋部材
の抜脱位置に開口部を形成する仮置き工程と、前記開口
部を介して貯蔵庫本体に対する放射性物質の搬入出を行
う搬入出工程と、前記開口部に隣接する副蓋部材を層状
副部材ごとに該開口部に移載して新たな開口部を形成す
る移載工程と、前記搬入出工程と前記移載工程とを搬入
出の終了または中断まで繰り返す反復工程と、前記反復
工程後に前記待機位置の主蓋部材を前記開口部に移載す
る遮蔽工程とを有することを特徴としている。上記の構
成によれば、主蓋部材や副蓋部材のサイズに対応した開
口部を順次形成しながら放射性物質の搬入出を行うこと
ができるため、搬入出口の開口面積を必要最小限に抑制
することにより放射線の漏洩を十分に低減することがで
きる。しかも、単一開口毎に実施でき、蓋の仮置き場所
も主蓋部材用のスペースのみで済む。According to a fifth aspect of the present invention, there is provided the method of attaching or detaching the split type shielding lid according to the first or second aspect, wherein the main lid member is pulled out and temporarily placed at a standby position to thereby remove the main lid member. A temporary placement step of forming an opening at the extraction position, a loading / unloading step of loading / unloading the radioactive substance to / from the storage body through the opening, and a sub-lid member adjacent to the opening for each layered sub-member. A transfer step of transferring the wafer to the opening to form a new opening, a repeating step of repeating the loading / unloading step and the loading step until loading or unloading is completed or interrupted, and the standby position after the repeating step. And a shielding step of transferring the main lid member to the opening. According to the above configuration, since the radioactive material can be carried in and out while sequentially forming the openings corresponding to the sizes of the main lid member and the sub lid member, the opening area of the carry-in / out port is suppressed to a minimum. This can sufficiently reduce radiation leakage. In addition, the operation can be performed for each single opening, and the place for temporarily placing the lid only requires the space for the main lid member.
【0020】請求項6の発明は、請求項3または4記載
の分割式遮蔽蓋の着脱方法であって、前記主蓋部材を抜
脱して待機位置に仮置きすることによって、該主蓋部材
の抜脱位置に開口部を形成する仮置き工程と、前記開口
部を介して貯蔵庫本体に対する放射性物質の搬入出を行
う搬入出工程と、前記開口部に隣接する副蓋部材を抜脱
して水平面で旋回した後、該開口部に移載して新たな開
口部を形成する旋回移載工程と、前記搬入出工程と前記
旋回移載工程とを搬入出の終了または中断まで繰り返す
反復工程と、前記反復工程後に前記待機位置の主蓋部材
を前記開口部に移載する遮蔽工程とを有することを特徴
としている。上記の構成によれば、主蓋部材や副蓋部材
のサイズに対応した開口部を順次形成しながら放射性物
質の搬入出を行うことができるため、搬入出口の開口面
積を必要最小限に抑制することにより放射線の漏洩を十
分に低減することができる。しかも、単一開口毎に実施
でき、蓋の仮置き場所も主蓋部材用のスペースのみで済
む。According to a sixth aspect of the present invention, there is provided the method of attaching or detaching the split type shielding lid according to the third or fourth aspect, wherein the main lid member is pulled out and temporarily placed at a standby position to thereby remove the main lid member. A temporary placement step of forming an opening at the extraction position, a loading / unloading step of loading / unloading the radioactive substance to / from the storage body through the opening, and a horizontal lid surface withdrawing the sub-lid member adjacent to the opening. After turning, the turning and transferring step of transferring to the opening to form a new opening, a repeating step of repeating the loading and unloading step and the turning and transferring step until the end of loading and unloading or interruption, And a shielding step of transferring the main lid member at the standby position to the opening after the repetition step. According to the above configuration, since the radioactive material can be carried in and out while sequentially forming the openings corresponding to the sizes of the main lid member and the sub lid member, the opening area of the carry-in / out port is suppressed to a minimum. This can sufficiently reduce radiation leakage. In addition, the operation can be performed for each single opening, and the place for temporarily placing the lid only requires the space for the main lid member.
【0021】請求項7の発明は、分割式遮蔽蓋の着脱方
法であって、上面側から下面側にかけて所定量単位で減
少された段部を一端面および他端面にそれぞれ備えた主
蓋部材と、上面側から下面側にかけて所定量単位で減少
および増加された段部を一端面および他端面にそれぞれ
備えた複数の副蓋部材とを有し、これら主蓋部材および
副蓋部材を段部同士を重複させながら配列することによ
り貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方法
であって、前記主蓋部材を抜脱して待機位置に仮置きす
ることによって、該主蓋部材の抜脱位置に開口部を形成
する仮置き工程と、前記開口部を介して貯蔵庫本体に対
する放射性物質の搬入出を行う搬入出工程と、前記開口
部に隣接する副蓋部材を抜脱して水平面で旋回した後、
該開口部に移載して新たな開口部を形成する旋回移載工
程と、前記搬入出工程と前記旋回移載工程とを搬入出の
終了または中断まで繰り返す反復工程と、前記反復工程
後に前記待機位置の主蓋部材を前記開口部に移載する遮
蔽工程とを有することを特徴としている。上記の構成に
よれば、主蓋部材や副蓋部材のサイズに対応した開口部
を順次形成しながら放射性物質の搬入出を行うことがで
きるため、搬入出口の開口面積を必要最小限に抑制する
ことにより放射線の漏洩を十分に低減することができ
る。しかも、単一開口毎に実施でき、蓋の仮置き場所も
主蓋部材用のスペースのみで済む。According to a seventh aspect of the present invention, there is provided a method of attaching / detaching a split-type shielding lid, comprising: a main lid member having a stepped portion reduced by a predetermined amount from an upper surface to a lower surface on one end surface and the other end surface; A plurality of sub-lid members provided on one end surface and the other end surface with a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. Are arranged so as to overlap with each other so as to close the loading / unloading port of the storage main body, wherein the main lid member is pulled out and temporarily placed in a standby position, thereby removing the main lid member. A temporary placement step of forming an opening at a position, a loading / unloading step of loading / unloading a radioactive substance to / from the storage body through the opening, and a sub lid member adjacent to the opening was pulled out and turned on a horizontal plane. rear,
A swivel transfer step of transferring to the opening to form a new opening, an iterative step of repeating the loading / unloading step and the swivel transfer step until the end of loading / unloading or interruption, and And a shielding step of transferring the main lid member at the standby position to the opening. According to the above configuration, since the radioactive material can be carried in and out while sequentially forming the openings corresponding to the sizes of the main lid member and the sub lid member, the opening area of the carry-in / out port is suppressed to a minimum. This can sufficiently reduce radiation leakage. In addition, the operation can be performed for each single opening, and the place for temporarily placing the lid only requires the space for the main lid member.
【0022】請求項8の発明は、分割式遮蔽蓋の着脱方
法であって、上面側から下面側にかけて所定量単位で減
少された段部を一端面および他端面にそれぞれ備えた主
蓋部材と、上面側から下面側にかけて所定量単位で減少
および増加された段部を一端面および他端面にそれぞれ
備えた複数の副蓋部材とを有し、これら主蓋部材および
副蓋部材を段部同士を重複させながら配列することによ
り貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方法
であって、前記貯蔵庫本体には、前記主蓋部材が一端側
に位置するように正方向に配列された分割式遮蔽蓋で塞
がれた第1搬入出口と、前記主蓋部材が他端側に位置す
るように逆方向に配列された分割式遮蔽蓋で塞がれた複
数の第2搬入出口とが、同一寸法で搬入出口長手方向か
搬入出口幅方向の何れかの方向に並列配置されており、
前記第1搬入出口および特定の第2搬入出口の主蓋部材
をそれぞれ抜脱して待機位置に仮置きすることによっ
て、各主蓋部材の抜脱位置に開口部を形成する仮置き工
程と、前記第1搬入出口の開口部を介して貯蔵庫本体に
対する放射性物質の搬入出を行う搬入出工程と、前記第
1搬入出口および前記第2搬入出口の開口部に隣接する
副蓋部材をそれぞれ抜脱し、前記第2搬入出口および第
1搬入出口の開口部にそれぞれ移載して新たな開口部を
形成する移載工程と、前記搬入出工程と前記移載工程と
を搬入出の終了または中断まで繰り返す反復工程と、前
記反復工程において第1搬入出口の開口位置が最端部ま
で移動した後に、前記第1搬入出口の開口部に次の第2
搬入出口の主蓋部材を移載し、前記特定の第2搬入出口
を第1搬入出口とし、前記次の第2搬入出口を特定の第
2搬入出口とした後、これら新たな第1搬入出口と第2
搬入出口との間で前記反復工程を行う別庫移行工程と、
前記反復工程後に、前記待機位置の主蓋部材を前記第1
搬入出口および第2搬入出口の開口部にそれぞれ移載す
る遮蔽工程とを有することを特徴としている。上記の構
成によれば、主蓋部材や副蓋部材のサイズに対応した開
口部を順次形成しながら放射性物質の搬入出を行うこと
ができるため、搬入出口の開口面積を必要最小限に抑制
することにより放射線の漏洩を十分に低減することがで
きる。また、請求項6や請求項7の場合のように副蓋部
材を水平面で旋回させるための旋回装置を不要にするこ
とができる。さらに、第1搬入出口と第2搬入出口との
間で行われる反復工程を、別庫となる新たな第1搬入出
口と第2搬入出口との間に移行する際の主蓋部材の着脱
操作を少なくすることができる。An eighth aspect of the present invention is a method of attaching and detaching a split type shielding lid, comprising: a main lid member having a stepped portion reduced by a predetermined amount from an upper surface to a lower surface on one end surface and the other end surface; A plurality of sub-lid members provided on one end surface and the other end surface with a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. Is a method of attaching / detaching a division type shielding lid that closes the loading / unloading port of the storage main body by arranging the storage lids in an overlapping manner, wherein the storage lid main body is arranged in the forward direction such that the main lid member is located at one end side. A first loading / unloading port closed with a split-type shielding lid, and a plurality of second loading / unloading ports closed with split-type shielding lids arranged in the opposite direction so that the main lid member is located on the other end side; But with the same dimensions, Re or are arranged in parallel direction,
Temporarily removing the main lid members of the first loading / unloading port and the specific second loading / unloading port and temporarily placing the main lid members at a standby position, thereby forming an opening at the removal position of each main lid member; A loading / unloading step of loading / unloading the radioactive substance to / from the storage main body through the opening of the first loading / unloading port, and pulling out the sub lid member adjacent to the opening of the first loading / unloading port and the opening of the second loading / unloading port, The transfer step of transferring a new opening to each of the openings of the second loading / unloading port and the first loading / unloading port, and the loading / unloading step and the transferring step are repeated until the loading / unloading ends or is interrupted. A repetition step, and in the repetition step, after the opening position of the first loading / unloading port moves to the end, the next second
After transferring the main cover member of the loading / unloading port, setting the specific second loading / unloading port as the first loading / unloading port, and setting the next second loading / unloading port as the specific second loading / unloading port, the new first loading / unloading port. And the second
A separate storage transfer step of performing the repetition step between the loading and unloading port,
After the repeating step, the main lid member at the standby position is moved to the first position.
And a shielding step of transferring the data to the opening of the loading / unloading port and the opening of the second loading / unloading port. According to the above configuration, since the radioactive material can be carried in and out while sequentially forming the openings corresponding to the sizes of the main lid member and the sub lid member, the opening area of the carry-in / out port is suppressed to a minimum. This can sufficiently reduce radiation leakage. Further, a turning device for turning the sub lid member on a horizontal plane as in the case of the sixth and seventh aspects can be dispensed with. Furthermore, the attaching / detaching operation of the main lid member at the time of shifting the repetitive process performed between the first loading / unloading port and the second loading / unloading port between the new first loading / unloading port and the second loading / unloading port. Can be reduced.
【0023】請求項9の発明は、分割式遮蔽蓋の着脱方
法であって、上面側から下面側にかけて所定量単位で減
少された段部を一端面および他端面にそれぞれ備えた主
蓋部材と、上面側から下面側にかけて所定量単位で減少
および増加された段部を一端面および他端面にそれぞれ
備えた複数の副蓋部材とを有し、これら主蓋部材および
副蓋部材を段部同士を重複させながら配列することによ
り貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方法
であって、前記貯蔵庫本体には、前記主蓋部材が一端側
に位置するように正方向に配列された分割式遮蔽蓋で塞
がれた第1搬入出口と、前記主蓋部材が他端側に位置す
るように逆方向に配列された分割式遮蔽蓋で塞がれた第
2搬入出口とを一組とする複数組が、同一寸法で搬入出
口長手方向か搬入出口幅方向の何れかの方向に並列配置
されており、前記複数組中の特定組における第1搬入出
口および第2搬入出口の主蓋部材をそれぞれ抜脱して待
機位置に仮置きすることによって、各主蓋部材の抜脱位
置に開口部を形成する仮置き工程と、前記第1搬入出口
の開口部を介して貯蔵庫本体に対する放射性物質の搬入
出を行う第1搬入出工程と、前記第2搬入出口の開口部
に隣接する副蓋部材を抜脱し、前記第1搬入出口の開口
部に移載して新たな開口部を第2搬入出口に形成する第
1移載工程と、前記第2搬入出口の開口部を介して貯蔵
庫本体に対する放射性物質の搬入出を行う第2搬入出工
程と、前記第1搬入出口の開口部に隣接する副蓋部材を
抜脱し、前記第2搬入出口の開口部に移載して新たな開
口部を第1搬入出口に形成する第2移載工程と、前記第
1搬入出工程、前記第1移載工程、前記第2搬入出工程
および前記第2移載工程を搬入出の終了または中断まで
繰り返す反復工程と、前記反復工程後に前記待機位置の
主蓋部材を前記第1搬入出口および第2搬入出口の開口
部にそれぞれ移載する遮蔽工程とを有することを特徴と
している。さらに、反復工程中、第1搬入出口と第2搬
入出口とが端部まで移動し、さらに継続して作業する場
合、他の組の主蓋部材を用いて第1および第2搬入出口
を閉じ、新たな組の貯蔵庫に開口を設ける別庫移行もで
きる。上記の構成によれば、請求項8の場合よりも少な
い蓋部材の着脱操作回数で放射性物質の搬入出を行うこ
とが可能になり、主蓋部材や副蓋部材のサイズに対応し
た開口部を順次形成しながら放射性物質の搬入出を行う
ことができるため、搬入出口の開口面積を必要最小限に
抑制することにより放射線の漏洩を十分に低減すること
ができる。尚、第1移載工程と第2移載工程は、順序を
逆にしても支障はない。According to a ninth aspect of the present invention, there is provided a method of attaching and detaching a split type shielding lid, comprising: a main lid member provided with a stepped portion which is reduced by a predetermined amount from an upper surface to a lower surface on one end surface and the other end surface; A plurality of sub-lid members provided on one end surface and the other end surface with a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. Is a method of attaching / detaching a division type shielding lid that closes the loading / unloading port of the storage main body by arranging the storage lids in an overlapping manner, wherein the storage lid main body is arranged in the forward direction such that the main lid member is located at one end side. The first loading / unloading port closed with the split-type shielding lid and the second loading / unloading port closed with the split-type shielding lid arranged in the opposite direction so that the main lid member is located on the other end side. Plural sets are the same size and the loading / unloading longitudinal direction or loading By being arranged side by side in any direction of the mouth width direction, the main lid members of the first loading / unloading port and the second loading / unloading port in the specific set of the plurality of sets are respectively pulled out and temporarily placed at the standby position, A temporary placement step of forming an opening at a position where the main lid member is removed, a first loading / unloading step of loading / unloading the radioactive substance into / from the storage main body through the opening of the first loading / unloading port, A first transfer step of removing the auxiliary lid member adjacent to the opening of the loading / unloading port, transferring the sub lid member to the opening of the first loading / unloading port, and forming a new opening in the second loading / unloading port, A second loading / unloading step of loading / unloading the radioactive substance to / from the storage body through the opening of the loading / unloading port, and removing the sub-lid member adjacent to the opening of the first loading / unloading port, and opening the second loading / unloading port. To form a new opening at the first loading / unloading port. A loading step, a repetition step of repeating the first loading / unloading step, the first transfer step, the second loading / unloading step, and the second transfer step until the loading / unloading ends or is interrupted, and the standby after the repetition step. And a shielding step of transferring the main lid member at the position to the openings of the first loading / unloading port and the second loading / unloading port, respectively. Further, during the repetition process, when the first loading / unloading port and the second loading / unloading port move to the end and work is continued, the first and second loading / unloading ports are closed using another set of main lid members. In addition, it is also possible to shift to a separate storage in which a new set of storages is provided with an opening. According to the above configuration, it is possible to carry in and out the radioactive material with a smaller number of attachment / detachment operations of the lid member than in the case of claim 8, and the opening corresponding to the size of the main lid member and the sub lid member is formed. Since the radioactive material can be carried in and out while being sequentially formed, the radiation area can be sufficiently reduced by suppressing the opening area of the carry-in / out port to the minimum necessary. Note that there is no problem even if the order of the first transfer step and the second transfer step is reversed.
【0024】請求項10の発明は、分割式遮蔽蓋の着脱
方法であって、上面側から下面側にかけて所定量単位で
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方
法であって、前記主蓋部材は、前記副蓋部材と同一形状
に形成された第1部材と、前記主蓋部材から前記第1部
材の幅を差し引いた逆凸型部材とからなり、前記副蓋部
材は、各段部が一体的に形成されており、前記貯蔵庫本
体には、前記主蓋部材が一端側に位置するように正方向
に配列された分割式遮蔽蓋で塞がれた第1搬入出口と、
前記主蓋部材が他端側に位置するように逆方向に配列さ
れた分割式遮蔽蓋で塞がれた第2搬入出口とを一組とす
る複数組が、同一寸法で搬入出口長手方向か搬入出口幅
方向の何れかの方向に並列配置されており、前記複数組
中の特定組における第1搬入出口および第2搬入出口の
逆凸型部材および第1搬入出口の第1部材をそれぞれ抜
脱して待機位置に仮置きすることによって、第1搬入出
口に放射性物質の搬入出を可能とする開口部を形成する
仮置き工程と、前記第1搬入出口の開口部を介して貯蔵
庫本体に対する放射性物質の搬入出を行う第1搬入出工
程と、前記第2搬入出口の開口部に隣接する第1部材ま
たは副蓋部材を抜脱し、前記第1搬入出口の開口部に移
載して新たな開口部を第2搬入出口に形成する第1移載
工程と、前記第2搬入出口の開口部を介して貯蔵庫本体
に対する放射性物質の搬入出を行う第2搬入出工程と、
前記第1搬入出口の開口部に隣接する副蓋部材を抜脱
し、前記第2搬入出口の開口部に移載して新たな開口部
を第1搬入出口に形成する第2移載工程と、前記第1搬
入出工程、前記第1移載工程、前記第2搬入出工程およ
び前記第2移載工程を搬入出の終了または中断まで繰り
返す反復工程と、前記反復工程後に前記待機位置の主蓋
部材を前記第1搬入出口および第2搬入出口の開口部に
それぞれ移載する遮蔽工程とを有することを特徴として
いる。上記の構成によれば、請求項8の場合よりも少な
い蓋部材の着脱操作回数で放射性物質の搬入出が可能に
なり、主蓋部材や副蓋部材のサイズに対応した請求項9
より少ない開口部を順次形成しながら放射性物質の搬入
出を行うことができるため、搬入出口の開口面積を必要
最小限に抑制することにより放射線の漏洩を十分に低減
することができる。また、別庫移行も実施することがで
きる。According to a tenth aspect of the present invention, there is provided a method of attaching / detaching a split-type shielding lid, comprising: a main lid member having a stepped portion reduced by a predetermined amount from an upper surface to a lower surface on one end surface and the other end surface; A plurality of sub-lid members provided on one end surface and the other end surface with a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. Are arranged so as to overlap each other, so as to close the loading / unloading port of the storage main body, wherein the main lid member has a first member formed in the same shape as the sub lid member; The sub-cover member is formed of an inverted convex member obtained by subtracting the width of the first member from the cover member, and the sub-cover member is formed integrally with each stepped portion. Divisions arranged in a positive direction so that they are located on the side A first transfer port which is closed by the shielding cover,
A plurality of sets each including a second loading / unloading port closed with a split-type shielding lid arranged in the opposite direction so that the main lid member is located at the other end side have the same dimensions as the loading / unloading port in the longitudinal direction. It is arranged in parallel in any direction of the width direction of the loading / unloading port, and removes the inverted convex member of the first loading / unloading port and the second loading / unloading port and the first member of the first loading / unloading port in the specific set of the plurality of sets. A temporary placement step of forming an opening at the first loading / unloading port to enable the loading / unloading of the radioactive material by temporarily removing it at the standby position; and a step of radiating the storage body through the opening of the first loading / unloading port. A first loading / unloading step of loading / unloading a substance, and removing a first member or a sub-lid member adjacent to the opening of the second loading / unloading port, transferring the material to the opening of the first loading / unloading port, and renewing a new one. A first transfer step of forming an opening at a second loading / unloading port, A step out second input for performing loading and unloading of radioactive materials for the storage body through the opening of the inlet and outlet,
A second transfer step of removing the auxiliary lid member adjacent to the opening of the first loading / unloading port, transferring the sub lid member to the opening of the second loading / unloading port, and forming a new opening in the first loading / unloading port; A repetition step of repeating the first loading / unloading step, the first transfer step, the second loading / unloading step, and the second transfer step until the end of loading / unloading or interruption; and a main lid at the standby position after the repetition step. And a shielding step of transferring the member to the openings of the first loading / unloading port and the second loading / unloading port, respectively. According to the above configuration, the radioactive substance can be carried in and out with a smaller number of attaching and detaching operations of the lid member than in the case of claim 8, and the size of the main lid member and the sub lid member can be adjusted.
Since the radioactive substance can be carried in and out while sequentially forming fewer openings, the leakage of radiation can be sufficiently reduced by suppressing the opening area of the carry-in / out port to the minimum necessary. In addition, separate storage transfer can be performed.
【0025】請求項11の発明は、請求項1ないし4の
何れか1項に記載の分割式遮蔽蓋であって、前記貯蔵庫
本体に対して所定幅Pの放射性物質が貯蔵されるように
なっており、前記搬入出口の幅をW、前記搬入出口の端
面から前記放射性物質の最外面までの距離をe、前記放
射性物質の隙間をc、前記搬入出口の蓋部材下面の支持
幅をf、前記主蓋部材の下面幅をLA、副蓋部材の下面
幅をLB、副蓋部材の下面幅で設置可能な放射性物質の
数量をm、主蓋部材および副蓋部材による分割数をNと
したとき、 LA≧LB+e+f ・・・(1) LB≧m(P+c) ・・・(2) LA+(N−1)LB=W+2f ・・・(3) これら条件式(1)〜(3)を満足することを特徴とし
ている。上記の構成によれば、主蓋部材や副蓋部材が放
射性物質を搬入出する際の障害とならないため、効率良
く搬入出することができる。According to an eleventh aspect of the present invention, there is provided the split type shielding lid according to any one of the first to fourth aspects, wherein a radioactive substance having a predetermined width P is stored in the storage main body. The width of the loading / unloading port is W, the distance from the end face of the loading / unloading port to the outermost surface of the radioactive substance is e, the gap between the radioactive substances is c, the support width of the lower surface of the loading / unloading lid member is f, The lower surface width of the main lid member is LA, the lower surface width of the sub lid member is LB, the number of radioactive materials that can be installed at the lower surface width of the sub lid member is m, and the number of divisions by the main lid member and the sub lid member is N. When: LA ≧ LB + e + f (1) LB ≧ m (P + c) (2) LA + (N−1) LB = W + 2f (3) These conditional expressions (1) to (3) are satisfied. It is characterized by doing. According to the above configuration, the main lid member and the sub lid member do not hinder the loading / unloading of the radioactive substance, so that the radioactive substance can be loaded / unloaded efficiently.
【0026】[0026]
【発明の実施の形態】〔実施形態1〕本発明の第1の実
施形態を図1ないし図9に基づいて以下に説明する。第
1の実施形態に係る分割式遮蔽蓋は、図1に示すよう
に、貯蔵庫本体1とで放射性物質用貯蔵庫を構成してい
る。貯蔵庫本体1は、ピット式やサイロ式等の構造体か
らなっており、ピット式の貯蔵庫本体1は、図2に示す
ように、外周壁3で囲まれた空間を仕切り壁4で区分す
ることによって、複数の貯蔵室にそれぞれ搬入出口1a
を有した構成にされている。一方、サイロ式の貯蔵庫本
体1は、図3に示すように、外周壁3で囲まれた内部空
間の上部を梁部材5で区分することによって、一つの貯
蔵室(内部空間)に対して複数の搬入出口1aを有した
構成にされている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiment 1] A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the split shield lid according to the first embodiment and the storage body 1 constitute a storage for radioactive materials. The storage main body 1 is made of a pit-type or silo-type structure. The pit-type storage main body 1 divides a space surrounded by an outer peripheral wall 3 with a partition wall 4, as shown in FIG. To each of the plurality of storage rooms,
Is provided. On the other hand, as shown in FIG. 3, the silo-type storage main body 1 divides the upper part of the internal space surrounded by the outer peripheral wall 3 with a beam member 5 so that a plurality of storage rooms (internal spaces) can be provided. Is provided.
【0027】上記の貯蔵庫本体1の搬入出口1aには、
図1に示すように、分割式遮蔽蓋が載置されている。分
割式遮蔽蓋は、上面側から下面側にかけて所定量単位で
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材21と、上面側から下面側にかけて所定量単位
で減少および増加された段部を一端面および他端面にそ
れぞれ備えた複数の副蓋部材22とを有している。そし
て、これら主蓋部材21および副蓋部材22は、放射線
が両当接部7a・8aの隙間を同時に通過して外部に漏
洩しないように段部同士を重複させながら配列されるこ
とによって、貯蔵庫本体1の搬入出口1aを塞いでい
る。At the loading / unloading port 1a of the storage main body 1,
As shown in FIG. 1, a split type shielding lid is placed. The split-type shielding lid has a main lid member 21 having a stepped portion, which is reduced by a predetermined amount from the upper surface to the lower surface, on each of one end surface and the other end surface, and decreases and increases by a predetermined amount from the upper surface to the lower surface. And a plurality of sub-lid members 22 each having the stepped portion on one end surface and the other end surface. The main lid member 21 and the sub lid member 22 are arranged while overlapping the steps so that the radiation does not simultaneously pass through the gap between the abutting portions 7a and 8a and leak to the outside. The loading / unloading port 1a of the main body 1 is closed.
【0028】上記の主蓋部材21および副蓋部材22
は、段部で層状に分割された上部層7と下部層8との2
層構造にされている。主蓋部材21は、上部層7の第1
蓋部材2a(層状主部材)と下部層8の第6蓋部材2
a' (層状主部材)とからなっている。また、各副蓋部
材22は、上部層7の第2〜第5蓋部材2b〜2e(層
状副部材)と下部層8の第7〜第10蓋部材2b' 〜2
e' (層状副部材)とからなっている。そして、上部層
7における蓋部材2a〜2e同士の当接部7aと、下部
層8における蓋部材2a' 〜2e' 同士の当接部8aと
は、主蓋部材21および副蓋部材22が段部同士を重複
させた状態となるように、水平方向に所定のズレ量dを
変位した位置に設定されている。The main lid member 21 and the sub lid member 22 described above.
Represents two layers of the upper layer 7 and the lower layer 8 divided into layers at the steps.
It has a layered structure. The main lid member 21 is provided on the first layer 7 of the upper layer 7.
Lid member 2 a (layered main member) and sixth lid member 2 of lower layer 8
a '(layered main member). Each of the sub-lid members 22 includes the second to fifth lid members 2b to 2e (layered sub-members) of the upper layer 7 and the seventh to tenth lid members 2b 'to 2 of the lower layer 8.
e '(layered sub-member). The contact portion 7a between the lid members 2a to 2e in the upper layer 7 and the contact portion 8a between the lid members 2a 'to 2e' in the lower layer 8 are formed by the main lid member 21 and the sub lid member 22. The position is set at a position displaced by a predetermined shift amount d in the horizontal direction so that the portions are overlapped.
【0029】上記の第1〜第10蓋部材2a〜2e'
は、図4(a)〜(c)に示すように、長方形状の平板
状に形成されており、同一の厚みおよび長さに設定され
ている。各蓋部材2a〜2e' の上面には、吊上げ機構
を構成する複数の係合部9が形成されている。各係合部
9は、図5(a)・(b)に示すように、各蓋部材2a
〜2e' 内に形成された係合穴9aと、係合穴9aの上
面の一部を開放した挿入口9bとを有している。挿入口
9bは、懸吊部材6の横断面形状に略一致するように形
成されており、懸吊部材6は、任意の角度に回動可能な
回動軸6bと、回動軸6bの下端部の両側面から互いに
反対方向に突設された鉤部6aとを有している。そし
て、懸吊部材6は、図示しないクレーン装置により昇降
可能にされていると共に、鉤部6aを係合穴9aに挿入
して回動軸6bを回動させることによって、係合部9に
対する係合状態と解除状態とを切り換え可能になってい
る。The first to tenth lid members 2a to 2e '
As shown in FIGS. 4A to 4C, is formed in a rectangular flat plate shape, and has the same thickness and length. A plurality of engaging portions 9 constituting a lifting mechanism are formed on the upper surface of each of the lid members 2a to 2e '. As shown in FIGS. 5 (a) and 5 (b), each engaging portion 9 is provided with each lid member 2a.
To 2e ', and an insertion opening 9b which is partially open on the upper surface of the engagement hole 9a. The insertion port 9b is formed so as to substantially match the cross-sectional shape of the suspension member 6, and the suspension member 6 has a pivot shaft 6b capable of pivoting at an arbitrary angle and a lower end of the pivot shaft 6b. And hook portions 6a projecting from opposite sides of the portion in opposite directions. The suspension member 6 can be moved up and down by a crane device (not shown), and the hook member 6a is inserted into the engagement hole 9a to rotate the rotation shaft 6b, thereby engaging the engagement member 9 with the engagement member 9. It is possible to switch between a combined state and a released state.
【0030】図1に示すように、上記のように構成され
た第1〜第10蓋部材2a〜2e'のうち第2〜第10
蓋部材2b〜2e' は、同一の幅Lb〜Le' に設定さ
れている。一方、第1蓋部材2aは、他の第2〜第10
蓋部材2b〜2e' の幅Lb〜Le' にズレ量dの2倍
を加えた幅Laに設定されている。As shown in FIG. 1, of the first to tenth lid members 2a to 2e 'constructed as described above,
The cover members 2b to 2e 'are set to have the same width Lb to Le'. On the other hand, the first lid member 2a is
The width La is obtained by adding twice the displacement d to the widths Lb to Le 'of the lid members 2b to 2e'.
【0031】また、上部層7および下部層8における搬
入出口長手方向(第1〜第10蓋部材2a〜2e' の幅
方向)の両端部は、貯蔵庫本体1の外周壁3に形成され
た上支持段3aおよび下支持段3bでそれぞれ支持され
ている。これらの上支持段3aおよび下支持段3bは、
外周壁3の上端面から内側方向に階段状に形成されてお
り、下支持段3bの深さは、第1〜第10蓋部材2a〜
2e' の厚みに一致するように設定されている。また、
下支持段3bは、搬入出口1aの全周に形成されてお
り、下部層8の紙面垂直方向(第1〜第10蓋部材2a
〜2e' の長さ方向)の両端部を支持するようになって
いる。Both ends of the upper layer 7 and the lower layer 8 in the carry-in / out port longitudinal direction (the width direction of the first to tenth lid members 2a to 2e ') are formed on the outer peripheral wall 3 of the storage main body 1. It is supported by the supporting step 3a and the lower supporting step 3b, respectively. These upper support stage 3a and lower support stage 3b
It is formed stepwise inward from the upper end surface of the outer peripheral wall 3, and the depth of the lower support step 3 b is set to the first to tenth lid members 2 a to 2 a.
The thickness is set to match the thickness of 2e '. Also,
The lower supporting step 3b is formed on the entire periphery of the loading / unloading port 1a, and is perpendicular to the plane of the lower layer 8 (the first to tenth lid members 2a).
E2e ′ in the longitudinal direction).
【0032】上記の構成において、貯蔵庫本体1に放射
性物質を搬入する際の分割式遮蔽蓋の着脱方法について
の例を説明する。In the above configuration, an example of a method of attaching and detaching the division type shielding lid when carrying the radioactive substance into the storage main body 1 will be described.
【0033】先ず、図6(a)に示すように、上部層7
の第1蓋部材2aを抜脱する。即ち、図5(a)・
(b)に示すように、クレーン装置を遠隔操作し、懸吊
部材6を第1蓋部材2aの上方に位置させ、懸吊部材6
の鉤部6aを係合部9の挿入口9bに挿通させる。そし
て、鉤部6aが係合穴9aに進入したときに回動軸6b
を90°回動させることによって、懸吊部材6を係合部
9に係合させた後、懸吊部材6を介して第1蓋部材2a
を持ち上げて抜脱する。First, as shown in FIG.
Of the first lid member 2a. That is, FIG.
As shown in (b), the crane device is remotely operated to position the suspension member 6 above the first lid member 2a.
Is inserted through the insertion port 9b of the engaging portion 9. When the hook 6a enters the engagement hole 9a, the rotation shaft 6b
Is rotated by 90 ° so that the suspension member 6 is engaged with the engagement portion 9, and then the first lid member 2 a is interposed via the suspension member 6.
Lift and remove.
【0034】上記のようにして第1蓋部材2aを抜脱す
ると、第1蓋部材2aを図示しない所定の待機場所に仮
置きした後、図6(b)に示すように、第1蓋部材2a
の下方に位置する下部層8の第6蓋部材2a' を上記と
同様の動作で抜脱することによって、搬入出口1aの一
端側の一部を開口する(仮置き工程)。そして、この開
口部を介して放射性物質10を図示しないクレーン装置
により懸吊しながら貯蔵庫本体1内に搬入することによ
って、開口部の下方に位置する第1収容部および第2
収容部に放射性物質10をそれぞれ荷積みする(搬入
出工程)。When the first lid member 2a is withdrawn as described above, the first lid member 2a is temporarily placed in a predetermined standby position (not shown), and then, as shown in FIG. 2a
By pulling out the sixth lid member 2a 'of the lower layer 8 located below the lower part 8 by the same operation as described above, a part of one end of the loading / unloading port 1a is opened (temporary placing step). Then, the radioactive substance 10 is carried into the storage main body 1 through the opening while being suspended by a crane device (not shown), so that the first storage section and the second storage section located below the opening are opened.
Each of the radioactive substances 10 is loaded into the storage section (load-in / out step).
【0035】第1収容部および第2収容部への放射
性物質10の搬入が完了すると、図6(c)に示すよう
に、上部層7に存在する第2蓋部材2bを第1および第
2収容部・の上方の下部層8に移載する。この後、
図6(d)に示すように、下部層8の第7蓋部材2b'
を第2蓋部材2bの上面(上部層7)に移載することに
よって、第3収容部および第4収容部の上方を開口
する(移載工程)。そして、この開口部を介して放射性
物質10を図示しないクレーン装置により懸吊しながら
搬入することによって、第3収容部および第4収容部
に放射性物質10を荷積みする(搬入出工程)。When the transport of the radioactive substance 10 into the first and second storage sections is completed, as shown in FIG. 6C, the second lid member 2b existing in the upper layer 7 is moved to the first and second storage sections. It is transferred to the lower layer 8 above the storage section. After this,
As shown in FIG. 6D, the seventh lid member 2b 'of the lower layer 8 is formed.
Is transferred to the upper surface (upper layer 7) of the second lid member 2b, thereby opening the upper portions of the third storage portion and the fourth storage portion (a transfer step). The radioactive substance 10 is loaded into the third storage section and the fourth storage section by carrying the radioactive substance 10 through the opening while being suspended by a crane device (not shown) (loading-in / out step).
【0036】上記のような上部層7および下部層8の一
部を開口する操作を順に繰り返し(反復工程)、最終の
第10収容部 への放射性物質10の荷積みを終了する
と、図6(e)に示すように、待機場所に仮置きしてい
た第6蓋部材2a' を下部層8の開口部に移載する。そ
して、第6蓋部材2a' の上面に第1蓋部材2aを載置
することによって、貯蔵庫本体1の搬入出口1aを塞ぐ
(遮蔽工程)。また、図7に示すように、最終の第10
収容部 に至るまでの例えば第8収容部で放射性物質
10の搬入を中止する場合には、第8収容部の上方に
位置する開口部を塞ぐように、この開口位置に第6蓋部
材2a' と第1蓋部材2aとを移載する(遮蔽工程)。
尚、放射性物質10の搬出は、上述の動作と逆の動作で
行うことができるため、その説明を省略する。The above operation of opening a part of the upper layer 7 and a part of the lower layer 8 is repeated in order (repeating step), and when the loading of the radioactive substance 10 into the final tenth container is completed, FIG. As shown in e), the sixth lid member 2a 'temporarily placed in the standby place is transferred to the opening of the lower layer 8. Then, the loading / unloading port 1a of the storage main body 1 is closed by placing the first lid member 2a on the upper surface of the sixth lid member 2a '(shielding step). In addition, as shown in FIG.
For example, when the transport of the radioactive substance 10 is stopped in the eighth storage unit before reaching the storage unit, the sixth lid member 2a 'is placed at this opening position so as to close the opening located above the eighth storage unit. And the first lid member 2a are transferred (shielding step).
Note that the unloading of the radioactive substance 10 can be performed by an operation reverse to the above-described operation, and a description thereof will be omitted.
【0037】以上のように、本実施形態の構成および着
脱方法によれば、蓋部材2a〜2e' の1個分の開口面
積で放射性物質10を搬入出することができるため、放
射線の漏洩を必要最小限に低減することができる。従っ
て、搬入出中にクレーン装置が故障した場合のように、
オペレータが放射性雰囲気中で搬入出口1aを塞ぐ必要
が生じた場合において、少なくとも第6蓋部材2a' で
下部層8の開口部を塞ぐ操作を行えば、放射線の直接的
な漏洩を隙間からの漏洩のみに低減することができる。
そして、このように低減された放射性雰囲気中で第1蓋
部材2aを第6蓋部材2a' に載置する操作を行うこと
ができるため、オペレータの被曝を十分に低減しながら
搬入出口1aを短時間で完全に塞ぐことができる。As described above, according to the configuration and the attaching / detaching method of the present embodiment, the radioactive substance 10 can be carried in / out with the opening area of one of the lid members 2a to 2e '. It can be reduced to the minimum necessary. Therefore, like when the crane device breaks down during loading and unloading,
If the operator needs to close the loading / unloading opening 1a in a radioactive atmosphere and at least perform an operation of closing the opening of the lower layer 8 with the sixth lid member 2a ', the direct leakage of radiation from the gap can be prevented. Can only be reduced.
Since the operation of placing the first lid member 2a on the sixth lid member 2a 'can be performed in the reduced radioactive atmosphere, the carry-in / out port 1a can be shortened while sufficiently reducing the exposure of the operator. It can be completely closed in time.
【0038】尚、第1〜第10蓋部材2a〜2e' は、
上述のように第2〜第10蓋部材2b〜2e' が同一の
幅Lb〜Le' に設定されている方が製作上および現場
管理上の簡素化の点で望ましいが、下記の条件を満足す
れば、任意の幅La〜Le'を選択することができる。The first to tenth lid members 2a to 2e 'are
As described above, it is desirable that the second to tenth lid members 2b to 2e 'have the same width Lb to Le' in terms of simplicity in manufacturing and on-site management, but satisfy the following conditions. Then, any widths La to Le ′ can be selected.
【0039】即ち、第1蓋部材2aの幅Laが下方に位
置する第6蓋部材2a' の幅La'にズレ量dの2倍を
加えた長さであるという第1の条件と、Lb=Lb' ,
Lc=Lc' ,Ld=Le' ,Le=Le' からなる第
2の条件と、第6蓋部材2a' の幅La' が残りの第2
〜第5蓋部材2b〜2eの幅Lb〜Leに対して同等ま
たはそれ以上に大きな長さであるという第3の条件とを
満足していれば、任意の幅La〜Leを選択することが
できる。ここで、第3の条件を満足する必要がある理由
は、図8に示すように、例えば第6蓋部材2a' の幅L
a' が第4蓋部材2dの幅Ldよりも狭いと、第4蓋部
材2dを下部層8の開口部に移載することができなくな
るからである。That is, the first condition that the width La of the first lid member 2a is a length obtained by adding twice the displacement d to the width La 'of the sixth lid member 2a' located below, and Lb = Lb ',
The second condition of Lc = Lc ′, Ld = Le ′, Le = Le ′ and the width La ′ of the sixth lid member 2a ′ are the second
If the third condition that the length is equal to or greater than the width Lb to Le of the fifth lid members 2b to 2e is satisfied, an arbitrary width La to Le can be selected. it can. Here, the reason that the third condition needs to be satisfied is, for example, as shown in FIG. 8, the width L of the sixth lid member 2a '.
If a ′ is smaller than the width Ld of the fourth lid member 2 d, the fourth lid member 2 d cannot be transferred to the opening of the lower layer 8.
【0040】また、本実施形態においては、主蓋部材2
1を構成する第1蓋部材2aと第6蓋部材2a' とが個
別に形成されているが、クレーン等の取り扱い設備に余
裕があれば、一体的に形成されていても良く、この場合
には、第1蓋部材2aと第6蓋部材2a' を移載すると
きの作業を簡単化することができる。In this embodiment, the main lid member 2
The first lid member 2a and the sixth lid member 2a 'that constitute the first member 1 are formed separately, but may be formed integrally if there is room in handling equipment such as a crane. Can simplify the operation of transferring the first lid member 2a and the sixth lid member 2a '.
【0041】また、本実施形態においては、分割式遮蔽
蓋が上部層7と下部層8との2層構造にされているが、
これに限定されることもなく、図9(a)・(b)に示
すように、上部層7、中部層11および下部層8の3層
構造にされていても良い。但し、3層構造の場合には、
第1蓋部材2aの幅Laが下方に位置する第6蓋部材2
a' の幅La' にズレ量dの2倍を加えた長さであると
いう第1の条件と、第6蓋部材2a' の幅La' が下方
に位置する第11蓋部材2a''の幅La''にズレ量dの
2倍を加えた長さであるという第2の条件と、Lb=L
b' =Lb'',Lc=Lc' =Lc'',Ld=Ld' =
Ld'',Le=Le' =Le''からなる第3の条件と、
第11蓋部材2a''の幅La''が第2〜第5蓋部材2b
〜2eの幅Lb〜Leに対して同等またはそれ以上に大
きな長さであるという第4の条件とを満足する必要があ
る。但し、第4の条件は、第1、第6および第11蓋部
材2a・2a' ・2a''以外の幅を全て等しくするのが
実用上好ましいものであることは、2層構成の場合と同
様である。Further, in the present embodiment, the split type shielding lid has a two-layer structure of the upper layer 7 and the lower layer 8,
The present invention is not limited to this, and may have a three-layer structure of the upper layer 7, the middle layer 11, and the lower layer 8, as shown in FIGS. However, in the case of a three-layer structure,
The sixth lid member 2 in which the width La of the first lid member 2a is located below
The first condition that the length is obtained by adding twice the amount of displacement d to the width La ′ of a ′, and the width of the eleventh lid member 2a ″ in which the width La ′ of the sixth lid member 2a ′ is located below. A second condition that the length is obtained by adding twice the displacement amount d to the width La ″, and Lb = L
b ′ = Lb ″, Lc = Lc ′ = Lc ″, Ld = Ld ′ =
A third condition consisting of Ld ″, Le = Le ′ = Le ″;
The width La ″ of the eleventh lid member 2a ″ is the second to fifth lid members 2b.
It is necessary to satisfy a fourth condition that the length is equal to or larger than the widths Lb to Le of 22e. However, the fourth condition is that it is practically preferable that all widths other than the first, sixth, and eleventh lid members 2a, 2a ′, 2a ″ are equal to those in the case of a two-layer configuration. The same is true.
【0042】〔実施形態2〕本発明の第2の実施形態を
図10に基づいて以下に説明する。尚、第1の実施形態
と同一の部材には、同一の符号を付記してその説明を省
略する。[Embodiment 2] A second embodiment of the present invention will be described below with reference to FIG. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【0043】第2の実施形態に係る分割式遮蔽蓋は、図
10(a)・(b)に示すように、主蓋部材21と副蓋
部材22とを有している。主蓋部材21は、副蓋部材2
2の第2〜第5蓋部材2b〜2e等と同一幅で各段部ご
とに層状に分割された第1および第6蓋部材2a・2
a' (層状主部材)と、主蓋部材21から副蓋部材22
の幅を差し引いた逆凸型部材12とからなっている。逆
凸型部材12は、上部層7に対応する上層部12aと、
下部層8に対応する下層部12bとからなっており、上
層部12aは、下層部12bの幅LA にズレ量dの2倍
を加えた幅LA +2dに設定されている。そして、主蓋
部材21の側方には、副蓋部材22の上部層7に対応す
る第2〜第5蓋部材2b〜2e(層状副部材)と、副蓋
部材22の下部層8に対応する第7〜第10蓋部材2
b' 〜2e' (層状副部材)とが配置されており、これ
らの蓋部材2b〜2e' ・2b' 〜2e' は、同一幅に
設定されている。その他の構成は、第1の実施形態と同
一である。The split type cover according to the second embodiment has a main cover 21 and a sub cover 22 as shown in FIGS. 10 (a) and 10 (b). The main lid member 21 includes the sub lid member 2
The first and sixth lid members 2a and 2 divided into layers at the respective steps with the same width as the second to fifth lid members 2b to 2e and the like.
a ′ (layered main member) and the main lid member 21 to the sub lid member 22
And the inversely convex member 12 from which the width is subtracted. The inverted convex member 12 includes an upper layer portion 12a corresponding to the upper layer 7,
The upper layer 12a has a width LA + 2d obtained by adding twice the amount of displacement d to the width LA of the lower layer 12b. On the side of the main lid member 21, the second to fifth lid members 2 b to 2 e (layered sub-members) corresponding to the upper layer 7 of the sub lid member 22 and the lower layer 8 of the sub lid member 22. 7th to 10th lid members 2
b 'to 2e' (layered sub-members) are arranged, and these lid members 2b to 2e 'and 2b' to 2e 'are set to have the same width. Other configurations are the same as those of the first embodiment.
【0044】上記の構成において、貯蔵庫本体1に放射
性物質を搬入する際の分割式遮蔽蓋の着脱方法について
説明する。In the above configuration, a method of attaching and detaching the split type shielding lid when carrying the radioactive substance into the storage main body 1 will be described.
【0045】先ず、逆凸型部材12の図示しない係合部
に懸吊部材を係合させた後、逆凸型部材12を持ち上げ
て抜脱し、所定の待機場所に仮置きする。続いて、第1
蓋部材2aおよび第6蓋部材2a' を抜脱して仮置きす
ることによって、搬入出口1aの一端側の一部を開口す
る(仮置き工程)。この後、この開口部を介して放射性
物質10を図示しないクレーン装置により懸吊しながら
貯蔵庫本体1内に搬入することによって、開口部の下方
に位置する第1収容部および第2収容部に放射性物
質10をそれぞれ荷積みする(搬入出工程)。First, after the suspension member is engaged with the engaging portion (not shown) of the inverted convex member 12, the inverted convex member 12 is lifted and removed, and temporarily placed in a predetermined standby place. Then, the first
By removing and temporarily placing the lid member 2a and the sixth lid member 2a ', a part of one end of the loading / unloading port 1a is opened (temporary placing step). Thereafter, the radioactive substance 10 is carried into the storage main body 1 via this opening while being suspended by a crane device (not shown), so that the radioactive substance 10 is transferred to the first storage section and the second storage section located below the opening. Each of the substances 10 is loaded (load-in / out step).
【0046】第1収容部および第2収容部への放射
性物質10の搬入が完了すると、上部層7に存在する第
2蓋部材2bを第1および第2収容部・の上方の下
部層8に移載する。この後、下部層8の第7蓋部材2
b' を第2蓋部材2bの上面(上部層7)に移載するこ
とによって、第3収容部および第4収容部の上方を
開口する(移載工程)。そして、この開口部を介して放
射性物質10を図示しないクレーン装置により懸吊しな
がら搬入することによって、第3収容部および第4収
容部に放射性物質10を荷積みする(搬入出工程)。When the transport of the radioactive substance 10 into the first and second storage sections is completed, the second lid member 2b existing in the upper layer 7 is moved to the lower layer 8 above the first and second storage sections. Transfer. After this, the seventh lid member 2 of the lower layer 8
By transferring b ′ to the upper surface (upper layer 7) of the second lid member 2b, the upper portions of the third and fourth storage portions are opened (a transfer step). The radioactive substance 10 is loaded into the third storage section and the fourth storage section by carrying the radioactive substance 10 through the opening while being suspended by a crane device (not shown) (loading-in / out step).
【0047】上記のような上部層7および下部層8の一
部を開口する操作を順に繰り返し(反復工程)、最終の
第10収容部 への放射性物質10の荷積みを終了する
と、待機場所に仮置きしていた第1蓋部材2a(または
2a’)を下部層8の開口部に移載すると共に、第1蓋
部材2aの上面に第6蓋部材2a' (または2a)を載
置する。そして、搬入出口1aの端部に残った開口部に
逆凸型部材12を移載することによって、搬入出口1a
を塞ぐ(遮蔽工程)。尚、放射性物質10の搬出は、上
述の動作と逆の動作で行うことができるため、その説明
を省略する。The operation of opening the upper layer 7 and a part of the lower layer 8 as described above is repeated in order (repetition step), and when the loading of the radioactive substance 10 into the final tenth container is completed, the waiting place is set. The temporarily placed first lid member 2a (or 2a ') is transferred to the opening of the lower layer 8, and the sixth lid member 2a' (or 2a) is placed on the upper surface of the first lid member 2a. . Then, by transferring the inverted convex member 12 to the opening remaining at the end of the loading / unloading port 1a, the loading / unloading port 1a is transferred.
(Shielding step). Note that the unloading of the radioactive substance 10 can be performed by an operation reverse to the above-described operation, and a description thereof will be omitted.
【0048】以上のように、本実施形態の構成および着
脱方法によれば、第1〜第10蓋部材2a〜2e' を同
一幅で得ることができるため、第1〜第10蓋部材2a
〜2e' を容易に作成することができる。また、放射性
物質10を搬入出する際に必要な開口面積を逆凸型部材
12の幅の変更により設定すれば、第1〜第10蓋部材
2a〜2e' の幅(重量)を必要最小限に設定すること
ができるため、懸吊能力の低いクレーン装置を用いて設
備コストを低減することができる。As described above, according to the configuration and the attaching / detaching method of the present embodiment, the first to tenth lid members 2a to 2e 'can be obtained with the same width, so that the first to tenth lid members 2a
~ 2e 'can be easily created. In addition, if the opening area required for carrying in and out the radioactive substance 10 is set by changing the width of the inverted convex member 12, the width (weight) of the first to tenth lid members 2a to 2e 'can be reduced to a necessary minimum. , The equipment cost can be reduced by using a crane device having a low suspension capacity.
【0049】〔実施形態3〕本発明の第3の実施形態を
図11ないし図18に基づいて以下に説明する。尚、第
1の実施形態と同一の部材には、同一の符号を付記して
その説明を省略する。Embodiment 3 A third embodiment of the present invention will be described below with reference to FIGS. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【0050】第3の実施形態に係る分割式遮蔽蓋は、図
11(a)に示すように、主蓋部材21である第1蓋部
材14と、副蓋部材22である第2〜第5蓋部材15〜
18を有している。第1蓋部材14は、図12(b)に
示すように、上面側から下面側にかけて所定量単位で減
少された段部を一端面および他端面にそれぞれ備えた断
面逆凸型形状に形成されており、上部14aは、下部1
4bの幅LA1にズレ量dの2倍を加算した幅LA2( =L
A1+2d)に設定されている。As shown in FIG. 11 (a), the dividing type cover according to the third embodiment has a first cover 14 as a main cover 21 and a second to fifth as a sub-cover 22. Lid member 15 ~
18. As shown in FIG. 12 (b), the first lid member 14 is formed in a reverse convex shape in cross section having a stepped portion reduced by a predetermined amount from the upper surface side to the lower surface side on one end surface and the other end surface, respectively. And the upper part 14a is
Width LA2 (= L) obtained by adding twice the amount of displacement d to width LA1 of 4b.
A1 + 2d).
【0051】また、第2〜第5蓋部材15〜18は、上
部15a〜18aおよび下部15b〜18bを有してお
り、上部15aが下部15bに対して水平方向にズレ量
d分を変位することによって、上面側から下面側にかけ
て所定量単位で減少および増加された段部を一端面およ
び他端面にそれぞれ備えた形状に形成されている。そし
て、これらの第1〜第5蓋部材14〜18は、下部14
b〜18bが同一の厚みHに設定されていると共に、同
一の総厚Tに設定されている。Each of the second to fifth lid members 15 to 18 has upper portions 15a to 18a and lower portions 15b to 18b, and the upper portion 15a is displaced in the horizontal direction by a shift amount d with respect to the lower portion 15b. Thus, the stepped portion is formed on the one end face and the other end face, each of which has a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. These first to fifth lid members 14 to 18 are
b to 18b are set to the same thickness H and the same total thickness T.
【0052】また、分割式遮蔽蓋における搬入出口長手
方向の両端部は、図11(a)に示すように、貯蔵庫本
体1の外周壁3に形成された上支持段3aおよび下支持
段3bでそれぞれ支持されている。これらの上支持段3
aおよび下支持段3bは、外周壁3の上端面から内側方
向に階段状に形成されている。その他の構成は、第1の
実施形態と同一である。As shown in FIG. 11A, upper and lower support steps 3a and 3b formed on the outer peripheral wall 3 of the storage main body 1 are provided at both ends in the longitudinal direction of the carry-in / out port of the split type cover. Each is supported. These upper support stage 3
a and the lower support step 3 b are formed stepwise inward from the upper end surface of the outer peripheral wall 3. Other configurations are the same as those of the first embodiment.
【0053】上記の構成において、貯蔵庫本体1に放射
性物質を搬入する際の分割式遮蔽蓋の着脱方法について
説明する。In the above configuration, a method of attaching and detaching the division type shielding lid when carrying the radioactive substance into the storage main body 1 will be described.
【0054】先ず、第1蓋部材14の図示しない係合部
に懸吊部材を係合させた後、第1蓋部材14をクレーン
装置により持ち上げて抜脱し、所定の待機場所に仮置き
することによって、図11(b)に示すように、搬入出
口1aの一端側の一部を開口する(仮置き工程)。この
後、この開口部を介して放射性物質10を図示しないク
レーン装置により懸吊しながら貯蔵庫本体1内に搬入す
ることによって、開口部の下方に位置する第1収容部
および第2収容部に放射性物質10をそれぞれ荷積み
する(搬入出工程)。First, after the suspension member is engaged with the engaging portion (not shown) of the first lid member 14, the first lid member 14 is lifted and removed by a crane device, and temporarily placed in a predetermined standby place. As a result, as shown in FIG. 11B, a part of one end of the loading / unloading port 1a is opened (temporary placing step). Thereafter, the radioactive substance 10 is carried into the storage main body 1 via this opening while being suspended by a crane device (not shown), so that the radioactive substance 10 is transferred to the first storage section and the second storage section located below the opening. Each of the substances 10 is loaded (load-in / out step).
【0055】次に、図11(c)に示すように、第2蓋
部材15をクレーン装置により上方に持ち上げて180
°水平面で旋回させた後、第1および第2収容部・
の上方に移載することによって、第3収容部および第
4収容部の上方を開口する(旋回移載工程)。そし
て、この開口部を介して放射性物質10を図示しないク
レーン装置により懸吊しながら搬入することによって、
第3収容部および第4収容部に放射性物質10を荷
積みする(搬入出工程)。Next, as shown in FIG. 11C, the second lid member 15 is lifted up
° After turning in a horizontal plane, the first and second storage units
The upper part of the third storage part and the fourth storage part are opened by being transferred above (the turning transfer step). Then, by carrying in the radioactive substance 10 through this opening while suspending it by a crane device (not shown),
The radioactive substance 10 is loaded in the third storage part and the fourth storage part (load-in / out step).
【0056】上記のような搬入出口1aの一部を開口す
る操作を順に繰り返し(反復工程)、最終の第10収容
部 への放射性物質10の荷積みを終了すると、図11
(d)に示すように、待機場所に仮置きしていた第1蓋
部材14を第10収容部 の上方の開口位置に移載する
ことにより開口部を塞ぐ(遮蔽工程)。また、図13に
示すように、最終の第10収容部 に至るまでの例えば
第7収容部で放射性物質10の搬入を中止する場合に
は、第7収容部の上方の開口位置に第1蓋部材14を
移載することにより開口部を塞ぐ(遮蔽工程)。尚、放
射性物質10の搬出は、上述の動作と逆の動作で行うこ
とができるため、その説明を省略する。The operation of opening a part of the loading / unloading port 1a as described above is sequentially repeated (repeating step), and when the loading of the radioactive substance 10 into the final tenth storage section is completed, FIG.
As shown in (d), the opening is closed by transferring the first lid member 14 temporarily placed in the standby place to the opening position above the tenth storage section (shielding step). In addition, as shown in FIG. 13, when the transport of the radioactive substance 10 is stopped in, for example, the seventh storage unit until reaching the final tenth storage unit, the first lid is placed at the opening position above the seventh storage unit. The opening is closed by transferring the member 14 (shielding step). Note that the unloading of the radioactive substance 10 can be performed by an operation reverse to the above-described operation, and a description thereof will be omitted.
【0057】以上のように、本実施形態の構成および着
脱方法によれば、第1の実施形態のように蓋部材14〜
18を複数層に分割せずに単一層とできるため、下記の
3利点が生じる。即ち、取り扱いが簡単(上下2層の
2回ハンドリングを1回にできる。)蓋部材の断面係
数、断面二次モーメントが大きくなるため、強度上の制
約が少なくなり、各蓋部材14〜18の総厚Tを遮蔽上
の必要最小限に抑制して分割式遮蔽蓋の軽量化を図れる
場合もある。さらに、蓋部材14〜18同士を積層す
る必要がないため、蓋部材14〜18の懸吊に使用され
る係合部を上面から突出した簡単な構成にすることがで
きる。As described above, according to the configuration and the attaching / detaching method of the present embodiment, the lid members 14 to
Since 18 can be formed into a single layer without being divided into a plurality of layers, the following three advantages occur. That is, the handling is simple (the upper and lower two layers can be handled twice.) Since the section modulus and the second moment of area of the lid member are increased, the restrictions on the strength are reduced, and the lid members 14 to 18 In some cases, the total thickness T can be suppressed to a minimum necessary for shielding, so that the weight of the divided shielding lid can be reduced. Furthermore, since there is no need to stack the lid members 14 to 18, it is possible to provide a simple configuration in which the engaging portions used to suspend the lid members 14 to 18 protrude from the upper surface.
【0058】尚、本実施形態においては、図14(a)
に示すように、搬入出口長手方向の外周壁3の上支持段
3aおよび下支持段3bにより各蓋部材14〜18の上
部14a〜18aおよび下部14b〜18bをそれぞれ
支持可能な構成にされているが、遮蔽性能が担保できれ
ば、これに限定されることはない。即ち、図14(b)
に示すように、外周壁3上端の内側に一つ形成された支
持段3cで各蓋部材14〜18の上部14a〜18aを
支持するように構成されていても良いし、図14(c)
に示すように、外周壁3の上端面で各蓋部材14〜18
の上部14a〜18aを支持するように構成されていて
も良い。In this embodiment, FIG.
As shown in the figure, the upper support step 3a and the lower support step 3b of the outer peripheral wall 3 in the carry-in / out port longitudinal direction are configured to be able to support the upper parts 14a to 18a and the lower parts 14b to 18b of the lid members 14 to 18, respectively. However, the present invention is not limited to this as long as the shielding performance can be ensured. That is, FIG.
As shown in FIG. 14 (c), the supporting steps 3c formed on the inside of the upper end of the outer peripheral wall 3 may be configured to support the upper portions 14a to 18a of the lid members 14 to 18, or FIG.
As shown in FIG.
May be configured to support the upper portions 14a to 18a.
【0059】また、本実施形態においては、各蓋部材1
4〜18が上部14a〜18aおよび下部14b〜18
bの2層構造にされているが、これに限定されることも
なく、図15(a)・(b)に示すように、3層構造で
あっても良い。また、本実施形態の各蓋部材14〜18
は、図16(a)に示すように、幅方向の両端面が上面
および下面に対して垂直方向に曲折されていても良い
し、図16(b)・(c)に示すように、幅方向の両端
面が上面および下面に対して所定の傾斜角度θで曲折さ
れていても良い。尚、一般的には、装着時に傾斜面が
ガイドとなって装着が容易化すると共に、有効遮蔽厚
が図16(b)・(c)に示すように垂直の場合よりも
大きくとることができることから、傾斜されている場合
が多い。In the present embodiment, each lid member 1
4 to 18 are upper portions 14a to 18a and lower portions 14b to 18
Although a two-layer structure b is used, the present invention is not limited to this, and a three-layer structure may be used as shown in FIGS. In addition, each of the lid members 14 to 18 of the present embodiment.
16 (a), both end surfaces in the width direction may be bent perpendicularly to the upper surface and the lower surface as shown in FIG. 16 (a), or the width may be bent as shown in FIGS. 16 (b) and (c). Both end surfaces in the direction may be bent at a predetermined inclination angle θ with respect to the upper surface and the lower surface. In addition, generally, the inclined surface serves as a guide at the time of mounting to facilitate the mounting, and the effective shielding thickness can be set to be larger than the case where it is vertical as shown in FIGS. 16 (b) and (c). Therefore, it is often inclined.
【0060】さらに、本実施形態においては、図12
(b)に示すように、上部14aと下部14bとを一体
化して第1蓋部材14が形成されているが、これに限定
されることもない。即ち、第1蓋部材14は、必要によ
り第1蓋部材14の上部14aと下部14bとを上下方
向に2分割することによって、図17(a)・(b)に
示すように、上部材19aと下部材19bとに別体化し
た状態で第1蓋部材19が形成されていても良い。ま
た、第1蓋部材14は、図18(a)・(b)に示すよ
うに、他の第2〜第5蓋部材15〜18と同一形状に形
成した第1部材20bと、第1蓋部材14から第1部材
20bを差し引いた断面逆凸型形状の逆凸型部材20a
とに2分割した構成を有する第1蓋部材20とされてい
ても良い。そして、これらの構成の場合には、第1蓋部
材19の重量が上部材19a(逆凸型部材20a)と下
部材19b(第1部材20b)とに分散され、各部材1
9a・19b(20a・20b)を他の第2〜第5蓋部
材15〜18よりも軽量化することができるため、第2
〜第5蓋部材15〜18に対応したクレーン装置を採用
することができる。Further, in the present embodiment, FIG.
As shown in (b), the first lid member 14 is formed by integrating the upper part 14a and the lower part 14b, but the present invention is not limited to this. That is, the first lid member 14 is divided into an upper part 14a and a lower part 14b of the first lid member 14 in the vertical direction as necessary, so that the upper member 19a is divided as shown in FIGS. 17 (a) and (b). The first lid member 19 may be formed separately from the first member 19 and the lower member 19b. As shown in FIGS. 18A and 18B, the first lid member 14 includes a first member 20b formed in the same shape as the other second to fifth lid members 15 to 18, and a first lid 20b. Inverted convex member 20a having an inverted convex cross section obtained by subtracting the first member 20b from the member 14
The first lid member 20 may be configured to be divided into two. In the case of these configurations, the weight of the first lid member 19 is distributed to the upper member 19a (the inverted convex member 20a) and the lower member 19b (the first member 20b).
9a and 19b (20a and 20b) can be made lighter than the other second to fifth lid members 15 to 18, so that the second
To crane devices corresponding to the fifth lid members 15 to 18 can be adopted.
【0061】〔実施形態4〕本発明の第4の実施形態を
図19ないし図24に基づいて以下に説明する。尚、第
3の実施形態と同一の部材には、同一の符号を付記して
その説明を省略する。[Embodiment 4] A fourth embodiment of the present invention will be described below with reference to FIGS. Note that the same members as those of the third embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【0062】第4の実施形態に係る分割式遮蔽蓋は、図
22(a)に示すように、上部14aおよび下部14b
を有した断面逆凸型形状の主蓋部材21である第1蓋部
材14と、上部15a〜18aと下部15b〜18bと
が水平方向に変位された副蓋部材22である第2〜第5
蓋部材15〜18とを一組として有している。第1蓋部
材14の下部14bは、第2〜第5蓋部材15〜18の
下部15b〜18bと同等若しくは広い幅に設定されて
いる。そして、各分割式遮蔽蓋は、ピット式やサイロ式
等の貯蔵庫本体1に形成された複数の例えば第1〜第3
搬入出口1a・1a' ・1a''をそれぞれ塞いでいる。As shown in FIG. 22 (a), the split type cover according to the fourth embodiment has an upper part 14a and a lower part 14b.
The first lid member 14 is a main lid member 21 having a reverse convex shape in cross section, and the second to fifth sub-lid members 22 are vertically displaced upper parts 15a to 18a and lower parts 15b to 18b.
It has lid members 15 to 18 as one set. The lower portion 14b of the first lid member 14 is set to be equal to or wider than the lower portions 15b to 18b of the second to fifth lid members 15 to 18. Each of the split-type shielding lids includes a plurality of, for example, first to third pits or silos formed on the storage main body 1.
The loading / unloading ports 1a, 1a 'and 1a''are closed.
【0063】上記の第1〜第3搬入出口1a・1a' ・
1a''は、図19に示すように、搬入出口幅方向(各蓋
部材14〜18の長手方向)に配列されている(但し、
図20に示すような各蓋部材14〜18の幅方向である
搬入出口長手方向の配列でも同様である)。第1搬入出
口1aを塞ぐ分割式遮蔽蓋は、搬入開始前においては図
中左端位置に第1蓋部材14を配置し、この第1蓋部材
14から第2〜第5蓋部材15〜18を図中右側に順に
配列した正配列の構成にされている。一方、第2および
第3搬入出口1a' ・1a''を塞ぐ分割式遮蔽蓋は、第
1搬入出口1aを塞ぐ分割式遮蔽蓋とは逆方向に図中右
側から左側に各蓋部材14〜18を配列した逆配列の構
成にされている。尚、図示しない以降の搬入出口は、上
記の逆配列の構成の分割式遮蔽蓋で塞がれている。尚、
副蓋部材22は、全て同一形状とし、正配列のときと逆
配列のときとでは180°回転させた状態で設置する。
また、分割式遮蔽蓋における搬入出口長手方向の両端部
は、図22(a)に示すように、貯蔵庫本体1の外周壁
3に形成された支持段3cでそれぞれ支持されている。
その他の構成は、第3の実施形態と同一である。The first to third loading / unloading ports 1a, 1a '.
1a ″ are arranged in the width direction of the loading / unloading port (the longitudinal direction of each of the lid members 14 to 18) as shown in FIG.
The same applies to the arrangement in the longitudinal direction of the loading / unloading port which is the width direction of each of the lid members 14 to 18 as shown in FIG. 20). Prior to the start of loading, the division type shielding lid for closing the first loading / unloading port 1a has the first lid member 14 disposed at the left end position in the drawing, and the second to fifth lid members 15 to 18 are separated from the first lid member 14. It has a normal array configuration arranged in order on the right side in the figure. On the other hand, the split-type shielding lids for closing the second and third loading / unloading ports 1a 'and 1a''are opposite to the split-type shielding lids for closing the first loading / unloading port 1a. 18 are arranged in an inverted arrangement. Note that the subsequent loading / unloading ports, not shown, are closed by the split type shielding lid having the above-mentioned reverse arrangement. still,
The sub-lid members 22 are all formed in the same shape, and are installed in a state of being rotated by 180 ° between the normal arrangement and the reverse arrangement.
As shown in FIG. 22 (a), both ends in the longitudinal direction of the loading / unloading port of the split type shielding lid are supported by supporting steps 3c formed on the outer peripheral wall 3 of the storage main body 1, respectively.
Other configurations are the same as those of the third embodiment.
【0064】上記の構成において、貯蔵庫本体1に放射
性物質を搬入する際の分割式遮蔽蓋の着脱方法について
説明する。In the above configuration, a method of attaching and detaching the division type shielding lid when carrying the radioactive substance into the storage main body 1 will be described.
【0065】放射性物質10の搬入開始前においては、
図19および図22(a)に示すように、全ての第1〜
第3搬入出口1a・1a' ・1a''が分割式遮蔽蓋によ
り塞がれた状態にされている。そして、放射性物質10
を搬入する場合には、先ず、第1搬入出口1aを塞いで
いる分割式遮蔽蓋の第1蓋部材14をクレーン装置によ
り持ち上げて抜脱し、所定の待機場所に仮置きすると共
に、同様の操作により第2搬入出口1a' の第1蓋部材
14' を抜脱して仮置きすることによって、図22
(b)に示すように、第1搬入出口1aの図中左端部分
と第2搬入出口1a' の図中右端部分とを開口する(仮
置き工程)。そして、第1搬入出口1aの開口部を介し
て放射性物質10を搬入する(搬入出工程)。Before starting to carry in the radioactive substance 10,
As shown in FIG. 19 and FIG.
The third loading / unloading ports 1a, 1a ', 1a''are closed by the divisional cover. And radioactive material 10
First, the first lid member 14 of the split type shielding lid closing the first loading / unloading port 1a is lifted and removed by a crane device, temporarily placed in a predetermined standby place, and the same operation is performed. By removing the first lid member 14 'of the second loading / unloading port 1a' and temporarily placing it,
As shown in (b), the left end of the first loading / unloading port 1a in the figure and the right end of the second loading / unloading port 1a 'in the figure are opened (temporary placing step). Then, the radioactive substance 10 is loaded through the opening of the first loading / unloading port 1a (loading / unloading step).
【0066】次に、図22(c)に示すように、第2搬
入出口1a' の第2蓋部材15' をクレーン装置により
上方に持ち上げ、第1搬入出口1aの開口部方向に水平
移動させた後、第1搬入出口1aの開口部に載置する。
この際、第1搬入出口1aの支持段3cと第2蓋部材1
5' の端部との形状が一致するため、第2蓋部材15'
を旋回させる必要がない。この後、図22(d)に示す
ように、第1搬入出口1aの第2蓋部材15をクレーン
装置により上方に持ち上げ、第2搬入出口1a' の開口
部方向に水平移動させた後、第2搬入出口1a' の開口
部に載置する。尚、この場合においても、第2搬入出口
1a' の支持段3cと第2蓋部材15の端部との形状が
一致するため、第2蓋部材15を旋回させる必要がない
(移載工程)。そして、このようにして第1搬入出口1
aにおける第2蓋部材15' と第3蓋部材16との間に
開口部が出現すると、この開口部を介して放射性物質1
0を搬入する(搬入出工程)。Next, as shown in FIG. 22 (c), the second lid member 15 'of the second loading / unloading port 1a' is lifted upward by a crane device and horizontally moved in the direction of the opening of the first loading / unloading port 1a. Then, it is placed in the opening of the first loading / unloading port 1a.
At this time, the support step 3c of the first loading / unloading port 1a and the second lid member 1
Since the shape of the second lid member 15 'is the same as that of the second lid member 15',
There is no need to turn. Thereafter, as shown in FIG. 22 (d), the second lid member 15 of the first loading / unloading port 1a is lifted upward by a crane device and is horizontally moved in the direction of the opening of the second loading / unloading port 1a '. 2 Placed in the opening of the loading / unloading port 1a ' Also in this case, since the shape of the supporting step 3c of the second loading / unloading port 1a 'and the end of the second lid member 15 match, it is not necessary to turn the second lid member 15 (transfer step). . Then, the first loading / unloading port 1
a, an opening appears between the second lid member 15 'and the third lid member 16 through the opening.
0 is carried in (a carry-in / out step).
【0067】この後、図22(e)に示すように、第1
搬入出口1aの第3蓋部材16を第2搬入出口1a' の
第2蓋部材15の側方に移載すると共に、第2搬入出口
1a' の第3蓋部材16' を第1搬入出口1aの第2蓋
部材15' の側方に移載することによって、第1搬入出
口1aに新たな開口部を出現させ、この開口部を介して
放射性物質10を搬入する。そして、このような操作を
順に繰り返すことによって(反復工程)、第1搬入出口
1aに対して放射性物質10を搬入する。そして、放射
性物質10が満杯になる等により第1搬入出口1aに対
する搬入を終了した後、続いて第2貯蔵庫に対する放射
性物質10の搬入を行う場合には、図21に示すよう
に、第1搬入出口1aの図中右側の開口部に第3搬入出
口1a''の第1蓋部材14''を移載する(別庫移行工
程)。Thereafter, as shown in FIG.
The third lid member 16 of the loading / unloading port 1a is transferred to the side of the second lid member 15 of the second loading / unloading port 1a ', and the third lid member 16' of the second loading / unloading port 1a 'is moved to the first loading / unloading port 1a. By transferring to the side of the second lid member 15 ', a new opening appears at the first loading / unloading port 1a, and the radioactive substance 10 is loaded through this opening. Then, by repeating such an operation in order (repeating step), the radioactive substance 10 is carried into the first carrying-in / out port 1a. Then, after the loading into the first loading / unloading port 1a is completed due to the radioactive substance 10 being full or the like, and subsequently, the loading of the radioactive substance 10 into the second storage is performed, as shown in FIG. The first lid member 14 ″ of the third loading / unloading port 1a ″ is transferred to the opening on the right side of the exit 1a in the drawing (separate storage transfer step).
【0068】この後、図23に示すように、以上のよう
な第1搬入出口1aと第2搬入出口1a' との間におけ
る操作を、第2搬入出口1a' と第3搬入出口1a''と
の間においても同様に行うことによって、第2搬入出口
1a' における放射性物質10の搬入を行う。また、例
えば第2搬入出口1a' における放射性物質10の搬入
を途中で中止する場合には、図24に示すように、第1
搬入出口1aの開口部に図示しない待機場所に仮置きし
ていた第1蓋部材14を移載することにより開口を塞ぐ
ことができる(遮蔽工程)。Thereafter, as shown in FIG. 23, the operation between the first loading / unloading port 1a and the second loading / unloading port 1a 'as described above is performed by the second loading / unloading port 1a' and the third loading / unloading port 1a ''. Similarly, the radioactive substance 10 is carried in at the second carry-in / out port 1a '. Further, for example, when the loading of the radioactive substance 10 at the second loading / unloading port 1a 'is stopped halfway, as shown in FIG.
The opening can be closed by transferring the first lid member 14 temporarily placed at a standby location (not shown) to the opening of the carry-in / out opening 1a (shielding step).
【0069】以上のように、本実施形態の構成および着
脱方法によれば、各蓋部材14〜18を旋回させること
なく第1〜第3搬入出口1a・1a' ・1a''に開口部
を順次出現させ、開口部を介して放射性物質10を搬入
することが可能であるため、クレーン装置に旋回機構を
設ける必要がなく、ひいては装置コストを低減すること
が可能になっている。As described above, according to the configuration and the attaching / detaching method of the present embodiment, the openings are formed in the first to third loading / unloading ports 1a, 1a ', 1a''without turning each of the lid members 14 to 18. Since it is possible to make the radioactive substances 10 appear sequentially and to carry the radioactive substance 10 through the opening, it is not necessary to provide a swivel mechanism in the crane apparatus, and it is possible to reduce the apparatus cost.
【0070】〔実施形態5〕本発明の第5の実施形態を
図25ないし図33に基づいて以下に説明する。尚、第
4の実施形態と同一の部材には、同一の符号を付記して
その説明を省略する。[Fifth Embodiment] A fifth embodiment of the present invention will be described below with reference to FIGS. Note that the same members as those of the fourth embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【0071】第5の実施形態に係る分割式遮蔽蓋は、図
25に示すように、ピット式やサイロ式等の貯蔵庫本体
1の搬入出口幅方向(第1〜第10蓋部材2a〜2e'
の長手方向)に形成された複数の例えば第1〜第4搬入
出口1a・1a' ・1a''・1a''''をそれぞれ塞いで
いる。そして、正配列の分割式遮蔽蓋と逆配列の分割式
遮蔽蓋とが交互に配置されることによって、第1搬入出
口1aおよび第3搬入出口1a''等の奇数番目の搬入出
口が正配列の分割式遮蔽蓋で塞がれている一方、第2搬
入出口1a' および第4搬入出口1a''' 等の偶数番目
の搬入出口が逆配列の分割式遮蔽蓋で塞がれている。そ
の他の構成は、第4の実施形態と同一である。As shown in FIG. 25, the split type shielding lid according to the fifth embodiment has a pit type, a silo type, etc., in the width direction of the loading / unloading port of the storage main body 1 (first to tenth lid members 2a to 2e ').
For example, the first to fourth carry-in / out ports 1a, 1a ', 1a'',1a''''are respectively closed. Then, the odd-numbered loading / unloading ports such as the first loading / unloading port 1a and the third loading / unloading port 1a ″ are arranged in a regular array by alternately disposing the split-type shielding lids in the normal arrangement and the split-type shielding lids in the reverse arrangement. , While the even-numbered loading / unloading ports, such as the second loading / unloading port 1a 'and the fourth loading / unloading port 1a''', are closed with the reversely arranged splitting / closing lids. Other configurations are the same as those of the fourth embodiment.
【0072】尚、本実施形態においては、正配列の分割
式遮蔽蓋と逆配列の分割式遮蔽蓋とが1列づつ交互に配
置された形態にされているが、これに限定されることは
なく、例えば図26に示すように、正配列の分割式遮蔽
蓋と逆配列の分割式遮蔽蓋とが2列等の複数列ごとに交
互に配置された形態にされていても良い。さらに、例え
ば図27に示すように、複数の例えば第1〜第4搬入出
口1a・1a' ・1a''・1a''''が貯蔵庫本体1の搬
入出口長手方向に形成されている場合において、分割式
遮蔽蓋が上記の1列や複数列ごとに交互に配置された形
態にされていても良い。In the present embodiment, the divisional shielding lids in the normal arrangement and the divisional shielding lids in the reverse arrangement are arranged alternately one by one. However, the present invention is not limited to this. Alternatively, for example, as shown in FIG. 26, a configuration may be adopted in which the divisionally-arranged shielding lids in the normal arrangement and the divisionally-arranged shielding lids in the reverse arrangement are alternately arranged in a plurality of rows such as two rows. Further, for example, as shown in FIG. 27, in the case where a plurality of first to fourth loading / unloading ports 1a, 1a ′, 1a ″, 1a ″ ″ are formed in the loading / unloading longitudinal direction of the storage main body 1, for example. Alternatively, the split-type shielding lids may be arranged alternately in the above-described one row or a plurality of rows.
【0073】上記の構成において、貯蔵庫本体1に放射
性物質を搬入する際の分割式遮蔽蓋の着脱方法について
説明する。A description will be given of a method of attaching / detaching the split-type shielding lid when the radioactive substance is carried into the storage main body 1 in the above configuration.
【0074】放射性物質10の搬入開始前においては、
図25および図29(a)に示すように、全ての第1〜
第4搬入出口1a・1a' ・1a''・1a''''が分割式
遮蔽蓋により塞がれた状態にされている。そして、放射
性物質10を搬入する場合には、先ず、第1搬入出口1
aを塞いでいる分割式遮蔽蓋の第1蓋部材14をクレー
ン装置により持ち上げて抜脱し、所定の待機場所に仮置
きすると共に、同様の操作により第2搬入出口1a' の
第1蓋部材14' を抜脱して仮置きすることによって、
図29(b)に示すように、第1搬入出口1aの図中左
端部分と第2搬入出口1a' の図中右端部分とを開口す
る(仮置き工程)。そして、これらの第1搬入出口1a
の開口部を介して放射性物質10を搬入する(第1搬入
出口工程)。Before starting to carry in the radioactive substance 10,
As shown in FIG. 25 and FIG.
The fourth loading / unloading ports 1a, 1a ', 1a'',1a''''are closed by the divisional cover. When the radioactive substance 10 is carried in, first, the first carry-in / out port 1
The first lid member 14 of the split type shielding lid that closes the first lid member 14 is lifted and removed by a crane device, temporarily placed at a predetermined standby place, and the first lid member 14 of the second loading / unloading port 1a 'is similarly operated. ''
As shown in FIG. 29B, the left end of the first loading / unloading port 1a in the figure and the right end of the second loading / unloading port 1a 'in the figure are opened (temporary placing step). And these first loading / unloading ports 1a
The radioactive substance 10 is carried in through the opening (1st carrying-in / out step).
【0075】次に、図29(c)に示すように、第2搬
入出口1a' の第2蓋部材15' をクレーン装置により
上方に持ち上げ、第1搬入出口1aの開口部方向に水平
移動させた後、第1搬入出口1aの開口部に載置する
(第1移載工程)。そして、第2蓋部材15' の抜脱に
より拡大した第2搬入出口1a' の開口部を介して放射
性物質10を搬入する(第2搬入出工程)。この後、図
29(d)に示すように、第1搬入出口1aの第2蓋部
材15をクレーン装置により第2搬入出口1a'の開口
部に移載し(第2移載工程)、第1搬入出口1aにおけ
る第2蓋部材15' と第3蓋部材16との間に出現した
開口部を介して放射性物質10を搬入する(第1搬入出
工程)。Next, as shown in FIG. 29 (c), the second lid member 15 'of the second loading / unloading port 1a' is lifted upward by a crane device and horizontally moved in the direction of the opening of the first loading / unloading port 1a. After that, it is placed in the opening of the first loading / unloading port 1a (first transfer step). Then, the radioactive substance 10 is carried in through the opening of the second carrying-in / out port 1a 'which has been enlarged by the removal of the second lid member 15' (second carrying-in / out step). Thereafter, as shown in FIG. 29 (d), the second lid member 15 of the first loading / unloading port 1a is transferred to the opening of the second loading / unloading port 1a 'by a crane device (second loading step). The radioactive substance 10 is carried in through an opening that appears between the second cover member 15 'and the third cover member 16 at the first carry-in / out port 1a (first carry-in / out step).
【0076】次に、図30(a)に示すように、第1搬
入出口1aの第3蓋部材16を第2搬入出口1a' の開
口部に移載することによって、第3蓋部材16の抜脱に
より拡大した第1搬入出口1aの開口部を介して放射性
物質10を搬入し、さらに、第2搬入出口1a' の第3
蓋部材16' を第1搬入出口1aの開口部に移載するこ
とによって、第3蓋部材16' の抜脱により拡大した第
2搬入出口1a' の開口部を介して放射性物質10を搬
入する。そして、このような操作を順に繰り返し(反復
工程)、最後に第1蓋部材14・14’で塞ぐことによ
って、図30(b)および図28に示すように、第1搬
入出口1aおよび第2搬入出口1a' における放射性物
質10の搬入を同時に行うことができる。また、作業を
途中で中断する場合には、その時点で第1蓋部材14・
14’で塞げば良いことは他の実施形態と同様である。Next, as shown in FIG. 30 (a), the third lid member 16 of the first loading / unloading port 1a is transferred to the opening of the second loading / unloading port 1a ', whereby the third lid member 16 is moved. The radioactive substance 10 is loaded through the opening of the first loading / unloading port 1a enlarged by withdrawal, and further, the third loading / unloading port of the second loading / unloading port 1a '.
By transferring the lid member 16 'to the opening of the first loading / unloading port 1a, the radioactive substance 10 is loaded through the opening of the second loading / unloading port 1a' which has been enlarged by the removal of the third lid member 16 '. . Then, such an operation is repeated in order (repetition step), and finally, the first loading / unloading port 1a and the second loading / unloading port 1a and the second loading / unloading port 2a are closed as shown in FIGS. The loading of the radioactive substance 10 into the loading / unloading port 1a 'can be performed simultaneously. If the work is interrupted halfway, the first lid member 14
What is necessary is to cover with 14 ', as in the other embodiments.
【0077】尚、本実施形態の着脱方法は、一体的に形
成された第1蓋部材14を備えた分割式遮蔽蓋に適用し
た場合ついて説明しているが、例えば図18(a)・
(b)に示すように、第1部材20bと逆凸型部材20
aとに2分割した構成の第1蓋部材20を備えた分割式
遮蔽蓋に適用することもできる。即ち、第1蓋部材20
の第1部材20bが他の第2〜第5蓋部材15〜18と
同一形状に形成されているため、先ず、仮置き工程にお
いて逆凸型部材20aを仮置きし、次いで第1および第
2移載工程において逆凸型部材20aを第2〜第5蓋部
材15〜18と同様に移載することによって、放射性物
質10を搬入することができる。Although the attachment / detachment method of the present embodiment has been described as applied to a split-type shielding lid having a first lid member 14 integrally formed, for example, FIG.
As shown in (b), the first member 20b and the reverse convex member 20
Also, the present invention can be applied to a split type shielding lid including the first lid member 20 having a configuration divided into two. That is, the first lid member 20
Since the first member 20b is formed in the same shape as the other second to fifth lid members 15 to 18, first, the inverted convex member 20a is temporarily placed in the temporary placing step, and then the first and second lid members 20b are placed. The radioactive substance 10 can be carried in by transferring the inverted convex member 20a in the transfer step in the same manner as the second to fifth lid members 15 to 18.
【0078】また、放射性物質10が放射性廃棄物であ
る場合には、形状が規格化され、整然と並べられて貯蔵
される例が多い。従って、図31に示すように、同一幅
寸法Pの放射性物質10を貯蔵対象として貯蔵庫内で等
間隔に配置する場合においては、下記の条件式(1)〜
(3)を満足した関係であることが望ましい。そして、
これらの条件式(1)〜(3)を満足すれば、分割式
遮蔽蓋の製作上および荷役作業管理上の容易化を実現す
ることができると共に、放射性物質10の搬入出時に
おいて、開口部の端面(各蓋部材14〜18の端面)に
対して適度な隙間(荷積みされた放射性物質10間の間
隔c以上)を保持したまま放射性物質10を昇降させる
ことができる。When the radioactive substance 10 is radioactive waste, the shape is standardized, and the radioactive substance 10 is often stored in an orderly manner. Therefore, as shown in FIG. 31, when the radioactive substances 10 having the same width dimension P are to be stored at regular intervals in the storage, the following conditional expressions (1) to
It is desirable that the relationship satisfy (3). And
If these conditional expressions (1) to (3) are satisfied, it is possible to realize easy production and management of cargo handling work of the split type shielding lid, and at the time of loading / unloading of the radioactive substance 10, the opening. The radioactive material 10 can be moved up and down while maintaining an appropriate gap (at least the distance c between the loaded radioactive materials 10) with respect to the end surfaces (end surfaces of the lid members 14 to 18).
【0079】 LA≧LB+e+f ・・・(1) LB≧m(P+c) ・・・(2) LA+(N−1)LB=W+2f ・・・(3)LA ≧ LB + e + f (1) LB ≧ m (P + c) (2) LA + (N−1) LB = W + 2f (3)
【0080】但し、 W:搬入出口の幅 e:搬入出口の端面から前記放射性物質の最外面までの
距離 P:放射性物質10の幅P c:放射性物質10の隙間 f:搬入出口の蓋部材下面の支持幅 LA:主蓋部材の下面幅(尚、図17の第1蓋部材19
にあっては下部材19bの幅) LB:副蓋部材の下面幅 m:副蓋部材の下面幅で設置可能な放射性物質10の数
量 N:主蓋部材および副蓋部材からなる蓋部材による分割
数(主蓋部材および副蓋部材の合計) である。W: width of the loading / unloading port e: distance from the end face of the loading / unloading port to the outermost surface of the radioactive substance P: width P of the radioactive substance 10 c: gap between the radioactive substances 10 f: lower surface of the lid of the loading / unloading port Support width LA: Lower surface width of the main lid member (the first lid member 19 in FIG. 17)
LB: Lower surface width of sub lid member m: Number of radioactive substances 10 that can be installed with lower surface width of sub lid member N: Division by lid member composed of main lid member and sub lid member (The total of the main lid member and the sub lid member).
【0081】尚、分割式遮蔽蓋が条件式(1)〜(3)
を満足しない場合には、例えば図33に示す場合は、第
2収容部の放射性物質10に対して搬入出しようとし
たときに、ア段階ではB1蓋部材の左側端と干渉し、イ
段階ではb1蓋部材の右側端と干渉する。従って、この
第2収容部において搬入出しようとすると、主蓋部材
および副蓋部材を外すか干渉箇所を避けながら昇降させ
る必要が生じることになる。Incidentally, the division type shielding lid is conditional expressions (1) to (3).
If the condition is not satisfied, for example, in the case shown in FIG. 33, when trying to carry in / out the radioactive substance 10 in the second storage section, it interferes with the left end of the B1 cover member in the A stage, and in the A stage b1 Interferes with the right end of the lid member. Therefore, when trying to carry in / out the second storage section, it is necessary to remove the main lid member and the sub lid member or to move up and down while avoiding the interference portion.
【0082】さらに、図32に示すように、分割式遮蔽
蓋が主蓋部材(底面幅:LA)を逆凸型部材AO(底面
幅:LA0)と第1部材BA(底面幅:LBA)とに分
割した場合には、条件式(1)〜(3)に加えて下記の
条件式(4)・(5)を満足すれば、上述の場合と同様
に、分割式遮蔽蓋の製作上および荷役作業管理上の容易
化を実現することができると共に、放射性物質10の搬
入出時において、開口部の端面(各蓋部材14〜18の
端面)に対して適度な隙間(荷積みされた放射性物質1
0間の間隔c以上)を保持したまま放射性物質10を昇
降させることができる。Further, as shown in FIG. 32, the split type shielding lid is composed of a main lid member (bottom width: LA) and an inverted convex member AO (bottom width: LA0) and a first member BA (bottom width: LBA). If the following conditional expressions (4) and (5) are satisfied in addition to the conditional expressions (1) to (3) in the case of dividing into In addition to facilitating the management of the cargo handling work, a suitable gap (the loaded radioactive material) with respect to the end faces of the openings (the end faces of the lid members 14 to 18) can be achieved when the radioactive substance 10 is carried in and out. Substance 1
The radioactive substance 10 can be moved up and down while maintaining the interval c of 0 or more).
【0083】 LBA=LB ・・・(4) LA=LAO+LBA ・・・(5) 尚、以上の全般の説明において、接合面は垂直とした
が、実際は、蓋部材の着脱が容易となること、接合
面の遮蔽欠損を補うことを目的として、図16(b)・
(c)および図32に例示するように、接合面を傾斜さ
せる場合にも適用できのは当然である。LBA = LB (4) LA = LAO + LBA (5) In the above general description, the joining surface is vertical, but in practice, it is easy to attach and detach the lid member. In order to compensate for the shielding loss of the joint surface, FIG.
As shown in FIG. 32C and FIG. 32, it is obvious that the present invention can be applied to the case where the joining surface is inclined.
【0084】[0084]
【発明の効果】請求項1の発明は、貯蔵庫本体の単一開
口区画毎の搬入出口に実施可能なものである。即ち、上
面側から下面側にかけて所定量単位で減少された段部を
一端面および他端面にそれぞれ備えた主蓋部材と、上面
側から下面側にかけて所定量単位で減少および増加され
た段部を一端面および他端面にそれぞれ備えた複数の副
蓋部材とを有し、これら主蓋部材および副蓋部材を段部
同士を重複させながら配列することにより貯蔵庫本体の
搬入出口を塞ぐ分割式遮蔽蓋において、前記主蓋部材
は、各段部ごとに層状に分割された層状主部材からな
り、前記副蓋部材は、各段部ごとに層状に分割された層
状副部材からなる構成である。According to the first aspect of the present invention, the invention can be carried out at the loading / unloading port for each single opening section of the storage main body. That is, a main lid member having a stepped portion reduced by a predetermined amount from the upper surface side to the lower surface side on each of one end surface and the other end surface, and a stepped portion reduced and increased by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-cover members provided on one end surface and the other end surface, respectively, and a split-type shielding cover for closing a carry-in / out port of the storage main body by arranging the main cover member and the sub-cover member while overlapping the steps. In the above, the main lid member is constituted by a layered main member divided into layers for each step portion, and the sub lid member is constituted by a layered sub member divided into layers for each step portion.
【0085】上記の構成によれば、後述の請求項5によ
る方法で単一開口区画毎に搬入出口の開口面積を必要最
小限に抑制しながら放射性物質の搬入出を行うことがで
き、さらに、主蓋部材および副蓋部材が層状主部材およ
び層状副部材で分割されるため、これら層状主部材およ
び層状副部材を運搬の単位として主蓋部材および副蓋部
材を着脱することができる。従って、層状部材が製作
し易い平板であり、主蓋部材や副蓋部材よりも軽量の
層状主部材および層状副部材に対応したクレーン装置を
用いて放射性物質の搬入出を行うことができるため、設
備コストを低減することができるという効果を奏する。According to the above configuration, the radioactive substance can be carried in and out while the opening area of the carry-in / out port is suppressed to a necessary minimum for each single opening section by the method according to claim 5 described later. Since the main lid member and the sub lid member are divided by the layered main member and the layered sub member, the main lid member and the sub lid member can be attached and detached by using the layered main member and the layered sub member as a unit of transportation. Therefore, since the layered member is a flat plate that is easy to manufacture, the loading and unloading of radioactive materials can be performed using a crane device corresponding to the layered main member and the layered sub-member that are lighter than the main lid member and the sub-lid member. There is an effect that the equipment cost can be reduced.
【0086】請求項2の発明は、上面側から下面側にか
けて所定量単位で減少された段部を一端面および他端面
にそれぞれ備えた主蓋部材と、上面側から下面側にかけ
て所定量単位で減少および増加された段部を一端面およ
び他端面にそれぞれ備えた複数の副蓋部材とを有し、こ
れら主蓋部材および副蓋部材を段部同士を重複させなが
ら配列することにより貯蔵庫本体の搬入出口を塞ぐ分割
式遮蔽蓋において、前記主蓋部材は、前記副蓋部材と同
一幅で各段部ごとに層状に分割された層状主部材と、前
記主蓋部材から前記副蓋部材の幅を差し引いた逆凸型部
材とからなり、前記副蓋部材は、各段部ごとに層状に分
割された層状副部材からなる構成である。According to a second aspect of the present invention, there is provided a main cover member provided with a stepped portion on one end surface and the other end surface which is reduced by a predetermined amount from the upper surface side to the lower surface side, and by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-lid members provided with the reduced and increased step portions on one end surface and the other end surface, respectively, and by arranging these main lid members and sub-lid members while overlapping the step portions, In the division type shielding lid that closes the loading / unloading port, the main lid member is a layered main member having the same width as the sub lid member and divided into layers at each step, and a width of the sub lid member from the main lid member. And the sub-cover member is configured by a layered sub-member divided into layers at each step.
【0087】上記の構成によれば、後述の請求項5によ
る方法で単一開口区画毎に搬入出口の開口面積を必要最
小限に抑制しながら放射性物質の搬入出を行うことがで
き、さらに、主蓋部材が層状主部材および逆凸型部材で
分割されると共に、副蓋部材が層状副部材で分割され
る。従って、逆凸型部材の他は全て同一寸法の平板と
することができて製作し易い。主蓋部材や副蓋部材よ
りも軽量の層状主部材、層状副部材および逆凸型部材に
対応したクレーン装置を用いて放射性物質の搬入出を行
うことができるため、設備コストを低減することができ
るという効果を奏する。According to the above configuration, the radioactive substance can be carried in and out while the opening area of the carry-in / out port is suppressed to a necessary minimum for each single opening section by the method according to claim 5 described below. The main lid member is divided by the layered main member and the inverted convex member, and the sub lid member is divided by the layered sub member. Therefore, all of the members except the inverted convex member can be formed as flat plates having the same dimensions, which facilitates manufacture. Since it is possible to carry in and out the radioactive material using a crane device corresponding to the layered main member, the layered sub member, and the inverted convex member which are lighter than the main lid member and the sub lid member, it is possible to reduce equipment costs. It has the effect of being able to.
【0088】請求項3の発明は、上面側から下面側にか
けて所定量単位で減少された段部を一端面および他端面
にそれぞれ備えた主蓋部材と、上面側から下面側にかけ
て所定量単位で減少および増加された段部を一端面およ
び他端面にそれぞれ備えた複数の副蓋部材とを有し、こ
れら主蓋部材および副蓋部材を段部同士を重複させなが
ら配列することにより貯蔵庫本体の搬入出口を塞ぐ分割
式遮蔽蓋において、前記主蓋部材は、各段部ごとに層状
に分割された層状主部材からなり、前記副蓋部材は、各
段部が一体的に形成されている構成である。According to a third aspect of the present invention, there is provided a main lid member provided with a stepped portion on one end surface and the other end surface which is reduced by a predetermined amount from the upper surface side to the lower surface side, and by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-lid members provided with the reduced and increased step portions on one end surface and the other end surface, respectively, and by arranging these main lid members and sub-lid members while overlapping the step portions, In a division type shielding lid for closing a loading / unloading port, the main lid member is composed of a layered main member divided into layers for each step portion, and the sub lid member is formed such that each step portion is integrally formed. It is.
【0089】上記の構成によれば、後述の請求項6ない
し10の何れか1項による方法で、搬入出口の開口面積
を必要最小限に抑制しながら放射性物質の搬入出を行う
ことができ、さらに、一般に最も大型となる主蓋部材が
層状主部材で分割されるため、主蓋部材よりも軽量の層
状主部材や副蓋部材に対応したクレーン装置を用いて放
射性物質の搬入出を行うことができることから設備コス
トを低減することができるという効果を奏する。According to the above configuration, the radioactive material can be carried in and out while the opening area of the carry-in / out port is minimized by the method according to any one of claims 6 to 10 described below. Furthermore, since the main lid member, which is generally the largest, is divided by the layered main member, the loading and unloading of radioactive materials is performed using a crane device corresponding to the layered main member and the sub-lid member that are lighter than the main lid member. Therefore, there is an effect that the equipment cost can be reduced.
【0090】請求項4の発明は、上面側から下面側にか
けて所定量単位で減少された段部を一端面および他端面
にそれぞれ備えた主蓋部材と、上面側から下面側にかけ
て所定量単位で減少および増加された段部を一端面およ
び他端面にそれぞれ備えた複数の副蓋部材とを有し、こ
れら主蓋部材および副蓋部材を段部同士を重複させなが
ら配列することにより貯蔵庫本体の搬入出口を塞ぐ分割
式遮蔽蓋において、前記主蓋部材は、前記副蓋部材と同
一形状に形成された第1部材と、前記主蓋部材から前記
第1部材の幅を差し引いた逆凸型部材とからなり、前記
副蓋部材は、各段部が一体的に形成されている構成であ
る。According to a fourth aspect of the present invention, there is provided a main cover member provided with a stepped portion on one end surface and the other end surface which is reduced by a predetermined amount from the upper surface to the lower surface, and a main cover member having a predetermined amount from the upper surface to the lower surface. A plurality of sub-lid members provided with the reduced and increased step portions on one end surface and the other end surface, respectively, and by arranging these main lid members and sub-lid members while overlapping the step portions, In the division type shielding lid for closing the loading / unloading port, the main lid member is a first member formed in the same shape as the sub lid member, and an inverted convex member obtained by subtracting a width of the first member from the main lid member. The sub lid member has a configuration in which each step is integrally formed.
【0091】上記の構成によれば、後述の請求項6ない
し10の何れか1項による方法で、搬入出口の開口面積
を必要最小限に抑制しながら放射性物質の搬入出を行う
ことができ、さらに、主蓋部材が副蓋部材と同一形状の
主部材と逆凸型部材とに分割される。従って、主蓋部材
よりも軽量の主部材、逆凸型部材および副蓋部材に対応
したクレーン装置を用いて放射性物質の搬入出を行うこ
とができるため、設備コストを低減することができると
いう効果を奏する。According to the above configuration, the radioactive substance can be carried in and out while the opening area of the carry-in / out port is suppressed to a minimum by the method according to any one of claims 6 to 10 described below. Further, the main lid member is divided into a main member having the same shape as the sub lid member and an inverted convex member. Therefore, the loading and unloading of the radioactive material can be performed using the crane device corresponding to the main member, the inverted convex member, and the sub-lid member that are lighter than the main lid member, so that the facility cost can be reduced. To play.
【0092】請求項5の発明は、請求項1または2記載
の分割式遮蔽蓋の着脱方法であって、前記主蓋部材を抜
脱して待機位置に仮置きすることによって、該主蓋部材
の抜脱位置に開口部を形成する仮置き工程と、前記開口
部を介して貯蔵庫本体に対する放射性物質の搬入出を行
う搬入出工程と、前記開口部に隣接する副蓋部材を層状
副部材ごとに該開口部に移載して新たな開口部を形成す
る移載工程と、前記搬入出工程と前記移載工程とを搬入
出の終了または中断まで繰り返す反復工程と、前記反復
工程後に前記待機位置の主蓋部材を前記開口部に移載す
る遮蔽工程とを有する構成である。上記の構成によれ
ば、主蓋部材や副蓋部材のサイズに対応した開口部を順
次形成しながら放射性物質の搬入出を行うことができる
ため、搬入出口の開口面積を必要最小限に抑制すること
により放射線の漏洩を十分に低減することができる。し
かも、単一開口毎に実施でき、蓋の仮置き場所も主蓋部
材用のスペースのみで済むという効果を奏する。According to a fifth aspect of the present invention, there is provided the method for attaching / detaching the split type cover according to the first or second aspect, wherein the main cover is detached and temporarily placed at a standby position to thereby remove the main cover. A temporary placement step of forming an opening at the extraction position, a loading / unloading step of loading / unloading the radioactive substance to / from the storage body through the opening, and a sub-lid member adjacent to the opening for each layered sub-member. A transfer step of transferring the wafer to the opening to form a new opening, a repeating step of repeating the loading / unloading step and the loading step until loading or unloading is completed or interrupted, and the standby position after the repeating step. And transferring the main lid member to the opening. According to the above configuration, since the radioactive material can be carried in and out while sequentially forming the openings corresponding to the sizes of the main lid member and the sub lid member, the opening area of the carry-in / out port is suppressed to a minimum. This can sufficiently reduce radiation leakage. In addition, the operation can be performed for each single opening, and there is an effect that the place for temporarily placing the lid only needs to be the space for the main lid member.
【0093】請求項6の発明は、請求項3または4記載
の分割式遮蔽蓋の着脱方法であって、前記主蓋部材を抜
脱して待機位置に仮置きすることによって、該主蓋部材
の抜脱位置に開口部を形成する仮置き工程と、前記開口
部を介して貯蔵庫本体に対する放射性物質の搬入出を行
う搬入出工程と、前記開口部に隣接する副蓋部材を抜脱
して水平面で旋回した後、該開口部に移載して新たな開
口部を形成する旋回移載工程と、前記搬入出工程と前記
旋回移載工程とを搬入出の終了または中断まで繰り返す
反復工程と、前記反復工程後に前記待機位置の主蓋部材
を前記開口部に移載する遮蔽工程とを有する構成であ
る。上記の構成によれば、主蓋部材や副蓋部材のサイズ
に対応した開口部を順次形成しながら放射性物質の搬入
出を行うことができるため、搬入出口の開口面積を必要
最小限に抑制することにより放射線の漏洩を十分に低減
することができる。しかも、単一開口毎に実施でき、蓋
の仮置き場所も主蓋部材用のスペースのみで済むという
効果を奏する。According to a sixth aspect of the present invention, there is provided the method of attaching or detaching the split type cover according to the third or fourth aspect, wherein the main cover is detached and temporarily placed at a standby position to thereby remove the main cover. A temporary placement step of forming an opening at the extraction position, a loading / unloading step of loading / unloading the radioactive substance to / from the storage body through the opening, and a horizontal lid surface withdrawing the sub-lid member adjacent to the opening. After turning, the turning and transferring step of transferring to the opening to form a new opening, a repeating step of repeating the loading and unloading step and the turning and transferring step until the end of loading and unloading or interruption, And a shielding step of transferring the main lid member at the standby position to the opening after the repetition step. According to the above configuration, since the radioactive material can be carried in and out while sequentially forming the openings corresponding to the sizes of the main lid member and the sub lid member, the opening area of the carry-in / out port is suppressed to a minimum. This can sufficiently reduce radiation leakage. In addition, the operation can be performed for each single opening, and there is an effect that the place for temporarily placing the lid only needs to be the space for the main lid member.
【0094】請求項7の発明は、分割式遮蔽蓋の着脱方
法であって、上面側から下面側にかけて所定量単位で減
少された段部を一端面および他端面にそれぞれ備えた主
蓋部材と、上面側から下面側にかけて所定量単位で減少
および増加された段部を一端面および他端面にそれぞれ
備えた複数の副蓋部材とを有し、これら主蓋部材および
副蓋部材を段部同士を重複させながら配列することによ
り貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方法
であって、前記主蓋部材を抜脱して待機位置に仮置きす
ることによって、該主蓋部材の抜脱位置に開口部を形成
する仮置き工程と、前記開口部を介して貯蔵庫本体に対
する放射性物質の搬入出を行う搬入出工程と、前記開口
部に隣接する副蓋部材を抜脱して水平面で旋回した後、
該開口部に移載して新たな開口部を形成する旋回移載工
程と、前記搬入出工程と前記旋回移載工程とを搬入出の
終了または中断まで繰り返す反復工程と、前記反復工程
後に前記待機位置の主蓋部材を前記開口部に移載する遮
蔽工程とを有する構成である。上記の構成によれば、主
蓋部材や副蓋部材のサイズに対応した開口部を順次形成
しながら放射性物質の搬入出を行うことができるため、
搬入出口の開口面積を必要最小限に抑制することにより
放射線の漏洩を十分に低減することができる。しかも、
単一開口毎に実施でき、蓋の仮置き場所も主蓋部材用の
スペースのみで済むという効果を奏する。The invention according to claim 7 relates to a method for attaching and detaching a split type shielding lid, wherein a main lid member provided with a stepped portion reduced by a predetermined amount from the upper surface side to the lower surface side on one end surface and the other end surface, respectively. A plurality of sub-lid members provided on one end surface and the other end surface with a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. Are arranged so as to overlap with each other so as to close the loading / unloading port of the storage main body, wherein the main lid member is pulled out and temporarily placed in a standby position, thereby removing the main lid member. A temporary placement step of forming an opening at a position, a loading / unloading step of loading / unloading a radioactive substance to / from the storage body through the opening, and a sub lid member adjacent to the opening was pulled out and turned on a horizontal plane. rear,
A swivel transfer step of transferring to the opening to form a new opening, an iterative step of repeating the loading / unloading step and the swivel transfer step until the end of loading / unloading or interruption, and And a shielding step of transferring the main lid member at the standby position to the opening. According to the above configuration, it is possible to carry in and out the radioactive material while sequentially forming the openings corresponding to the sizes of the main lid member and the sub lid member,
By suppressing the opening area of the carry-in / out port to the minimum necessary, leakage of radiation can be sufficiently reduced. Moreover,
This can be carried out for each single opening, and there is an effect that the place for temporarily placing the lid only needs to be the space for the main lid member.
【0095】請求項8の発明は、分割式遮蔽蓋の着脱方
法であって、上面側から下面側にかけて所定量単位で減
少された段部を一端面および他端面にそれぞれ備えた主
蓋部材と、上面側から下面側にかけて所定量単位で減少
および増加された段部を一端面および他端面にそれぞれ
備えた複数の副蓋部材とを有し、これら主蓋部材および
副蓋部材を段部同士を重複させながら配列することによ
り貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方法
であって、前記貯蔵庫本体には、前記主蓋部材が一端側
に位置するように正方向に配列された分割式遮蔽蓋で塞
がれた第1搬入出口と、前記主蓋部材が他端側に位置す
るように逆方向に配列された分割式遮蔽蓋で塞がれた複
数の第2搬入出口とが、同一寸法で搬入出口長手方向か
搬入出口幅方向の何れかの方向に並列配置されており、
前記第1搬入出口および特定の第2搬入出口の主蓋部材
をそれぞれ抜脱して待機位置に仮置きすることによっ
て、各主蓋部材の抜脱位置に開口部を形成する仮置き工
程と、前記第1搬入出口の開口部を介して貯蔵庫本体に
対する放射性物質の搬入出を行う搬入出工程と、前記第
1搬入出口および前記第2搬入出口の開口部に隣接する
副蓋部材をそれぞれ抜脱し、前記第2搬入出口および第
1搬入出口の開口部にそれぞれ移載して新たな開口部を
形成する移載工程と、前記搬入出工程と前記移載工程と
を搬入出の終了または中断まで繰り返す反復工程と、前
記反復工程において第1搬入出口の開口位置が最端部ま
で移動した後に、前記第1搬入出口の開口部に次の第2
搬入出口の主蓋部材を移載し、前記特定の第2搬入出口
を第1搬入出口とし、前記次の第2搬入出口を特定の第
2搬入出口とした後、これら新たな第1搬入出口と第2
搬入出口との間で前記反復工程を行う別庫移行工程と、
前記反復工程後に、前記待機位置の主蓋部材を前記第1
搬入出口および第2搬入出口の開口部にそれぞれ移載す
る遮蔽工程とを有する構成である。上記の構成によれ
ば、主蓋部材や副蓋部材のサイズに対応した開口部を順
次形成しながら放射性物質の搬入出を行うことができる
ため、搬入出口の開口面積を必要最小限に抑制すること
により放射線の漏洩を十分に低減することができる。ま
た、請求項6や請求項7の場合のように副蓋部材を水平
面で旋回させるための旋回装置を不要にすることができ
る。さらに、第1搬入出口と第2搬入出口との間で行わ
れる反復工程を、別庫となる新たな第1搬入出口と第2
搬入出口との間に移行する際の主蓋部材の着脱操作を少
なくすることができるという効果を奏する。An eighth aspect of the present invention is a method of attaching and detaching a split type shielding lid, wherein a main lid member having a stepped portion reduced by a predetermined amount from an upper surface to a lower surface on one end surface and the other end surface is provided. A plurality of sub-lid members provided on one end surface and the other end surface with a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. Is a method of attaching / detaching a split type shielding lid that closes the loading / unloading port of the storage main body by arranging the storage lids in an overlapping manner. A first loading / unloading port closed with a split-type shielding lid, and a plurality of second loading / unloading ports closed with split-type shielding lids arranged in the opposite direction so that the main lid member is located on the other end side; But with the same dimensions, Re or are arranged in parallel direction,
Temporarily removing the main lid members of the first loading / unloading port and the specific second loading / unloading port and temporarily placing the main lid members at a standby position, thereby forming an opening at the removal position of each main lid member; A loading / unloading step of loading / unloading the radioactive substance to / from the storage main body through the opening of the first loading / unloading port, and pulling out the sub lid member adjacent to the opening of the first loading / unloading port and the opening of the second loading / unloading port, The transfer step of transferring a new opening to each of the openings of the second loading / unloading port and the first loading / unloading port, and the loading / unloading step and the transferring step are repeated until the loading / unloading ends or is interrupted. A repetition step, and in the repetition step, after the opening position of the first loading / unloading port moves to the extreme end, the next second loading / unloading section is inserted into the opening of the first loading / unloading port.
After transferring the main cover member of the loading / unloading port, setting the specific second loading / unloading port as the first loading / unloading port, and setting the next second loading / unloading port as the specific second loading / unloading port, the new first loading / unloading port. And the second
A separate storage transfer step of performing the repetition step between the loading and unloading port,
After the repeating step, the main lid member at the standby position is moved to the first position.
And a shielding step of transferring the data to the opening of the loading / unloading port and the opening of the second loading / unloading port. According to the above configuration, since the radioactive material can be carried in and out while sequentially forming the openings corresponding to the sizes of the main lid member and the sub lid member, the opening area of the carry-in / out port is suppressed to a minimum. This can sufficiently reduce radiation leakage. Further, a turning device for turning the sub lid member on a horizontal plane as in the case of the sixth and seventh aspects can be dispensed with. Further, the repetition process performed between the first loading / unloading port and the second loading / unloading port is performed by adding a new first loading / unloading port, which is a separate storage, to the second loading / unloading port.
This has the effect of reducing the number of operations for attaching and detaching the main lid member when moving to and from the carry-in / out port.
【0096】請求項9の発明は、分割式遮蔽蓋の着脱方
法であって、上面側から下面側にかけて所定量単位で減
少された段部を一端面および他端面にそれぞれ備えた主
蓋部材と、上面側から下面側にかけて所定量単位で減少
および増加された段部を一端面および他端面にそれぞれ
備えた複数の副蓋部材とを有し、これら主蓋部材および
副蓋部材を段部同士を重複させながら配列することによ
り貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方法
であって、前記貯蔵庫本体には、前記主蓋部材が一端側
に位置するように正方向に配列された分割式遮蔽蓋で塞
がれた第1搬入出口と、前記主蓋部材が他端側に位置す
るように逆方向に配列された分割式遮蔽蓋で塞がれた第
2搬入出口とを一組とする複数組が、同一寸法で搬入出
口長手方向か搬入出口幅方向の何れかの方向に並列配置
されており、前記複数組中の特定組における第1搬入出
口および第2搬入出口の主蓋部材をそれぞれ抜脱して待
機位置に仮置きすることによって、各主蓋部材の抜脱位
置に開口部を形成する仮置き工程と、前記第1搬入出口
の開口部を介して貯蔵庫本体に対する放射性物質の搬入
出を行う第1搬入出工程と、前記第2搬入出口の開口部
に隣接する副蓋部材を抜脱し、前記第1搬入出口の開口
部に移載して新たな開口部を第2搬入出口に形成する第
1移載工程と、前記第2搬入出口の開口部を介して貯蔵
庫本体に対する放射性物質の搬入出を行う第2搬入出工
程と、前記第1搬入出口の開口部に隣接する副蓋部材を
抜脱し、前記第2搬入出口の開口部に移載して新たな開
口部を第1搬入出口に形成する第2移載工程と、前記第
1搬入出工程、前記第1移載工程、前記第2搬入出工程
および前記第2移載工程を搬入出の終了または中断まで
繰り返す反復工程と、前記反復工程後に前記待機位置の
主蓋部材を前記第1搬入出口および第2搬入出口の開口
部にそれぞれ移載する遮蔽工程とを有する構成である。
さらに、反復工程中、第1搬入出口と第2搬入出口とが
端部まで移動し、さらに継続して作業する場合、他の組
の主蓋部材を用いて第1および第2搬入出口を閉じ、新
たな組の貯蔵庫に開口を設ける別庫移行もできる。尚、
第1移載工程と第2移載工程は、順序を逆にしても支障
はない。上記の構成によれば、請求項8の場合よりも少
ない蓋部材の着脱操作回数で放射性物質の搬入出を行う
ことが可能になり、主蓋部材や副蓋部材のサイズに対応
した開口部を順次形成しながら放射性物質の搬入出を行
うことができるため、搬入出口の開口面積を必要最小限
に抑制することにより放射線の漏洩を十分に低減するこ
とができるという効果を奏する。A ninth aspect of the present invention is a method of attaching and detaching a split type shielding lid, wherein a main lid member having a stepped portion reduced by a predetermined amount from an upper surface to a lower surface on one end surface and the other end surface is provided. A plurality of sub-lid members provided on one end surface and the other end surface with a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. Is a method of attaching / detaching a division type shielding lid that closes the loading / unloading port of the storage main body by arranging the storage lids in an overlapping manner, wherein the storage lid main body is arranged in the forward direction such that the main lid member is located at one end side. The first loading / unloading port closed with the split-type shielding lid and the second loading / unloading port closed with the split-type shielding lid arranged in the opposite direction so that the main lid member is located on the other end side. Plural sets are the same size and the loading / unloading longitudinal direction or loading By being arranged side by side in any direction of the mouth width direction, the main lid members of the first loading / unloading port and the second loading / unloading port in the specific set of the plurality of sets are respectively pulled out and temporarily placed at the standby position, A temporary placement step of forming an opening at a position where the main lid member is removed, a first loading / unloading step of loading / unloading the radioactive substance into / from the storage main body through the opening of the first loading / unloading port, A first transfer step of removing the auxiliary lid member adjacent to the opening of the loading / unloading port, transferring the sub lid member to the opening of the first loading / unloading port, and forming a new opening in the second loading / unloading port, A second loading / unloading step of loading / unloading the radioactive substance to / from the storage body through the opening of the loading / unloading port, and removing the sub-lid member adjacent to the opening of the first loading / unloading port, and opening the second loading / unloading port. To form a new opening at the first loading / unloading port. A loading step, a repetition step of repeating the first loading / unloading step, the first transfer step, the second loading / unloading step, and the second transfer step until the loading / unloading ends or is interrupted, and the standby after the repetition step. And a shielding step of transferring the main lid member at the position to the openings of the first loading / unloading port and the second loading / unloading port, respectively.
Further, during the repetition process, when the first loading / unloading port and the second loading / unloading port move to the end and work is continued, the first and second loading / unloading ports are closed using another set of main lid members. In addition, it is also possible to shift to a separate storage in which a new set of storages is provided with an opening. still,
Even if the order of the first transfer step and the second transfer step is reversed, there is no problem. According to the above configuration, it is possible to carry in and out the radioactive material with a smaller number of attachment / detachment operations of the lid member than in the case of claim 8, and the opening corresponding to the size of the main lid member and the sub lid member is formed. Since the radioactive material can be carried in and out while being sequentially formed, the radiation area can be sufficiently reduced by minimizing the opening area of the carry-in / out port.
【0097】請求項10の発明は、分割式遮蔽蓋の着脱
方法であって、上面側から下面側にかけて所定量単位で
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方
法であって、前記主蓋部材は、前記副蓋部材と同一形状
に形成された第1部材と、前記主蓋部材から前記第1部
材の幅を差し引いた逆凸型部材とからなり、前記副蓋部
材は、各段部が一体的に形成されており、前記貯蔵庫本
体には、前記主蓋部材が一端側に位置するように正方向
に配列された分割式遮蔽蓋で塞がれた第1搬入出口と、
前記主蓋部材が他端側に位置するように逆方向に配列さ
れた分割式遮蔽蓋で塞がれた第2搬入出口とを一組とす
る複数組が、同一寸法で搬入出口長手方向か搬入出口幅
方向の何れかの方向に並列配置されており、前記複数組
中の特定組における第1搬入出口および第2搬入出口の
逆凸型部材および第1搬入出口の第1部材をそれぞれ抜
脱して待機位置に仮置きすることによって、第1搬入出
口に放射性物質の搬入出を可能とする開口部を形成する
仮置き工程と、前記第1搬入出口の開口部を介して貯蔵
庫本体に対する放射性物質の搬入出を行う第1搬入出工
程と、前記第2搬入出口の開口部に隣接する第1部材ま
たは副蓋部材を抜脱し、前記第1搬入出口の開口部に移
載して新たな開口部を第2搬入出口に形成する第1移載
工程と、前記第2搬入出口の開口部を介して貯蔵庫本体
に対する放射性物質の搬入出を行う第2搬入出工程と、
前記第1搬入出口の開口部に隣接する副蓋部材を抜脱
し、前記第2搬入出口の開口部に移載して新たな開口部
を第1搬入出口に形成する第2移載工程と、前記第1搬
入出工程、前記第1移載工程、前記第2搬入出工程およ
び前記第2移載工程を搬入出の終了または中断まで繰り
返す反復工程と、前記反復工程後に前記待機位置の主蓋
部材を前記第1搬入出口および第2搬入出口の開口部に
それぞれ移載する遮蔽工程とを有する構成である。上記
の構成によれば、別庫移行工程も請求項9に説明した方
法に準じて実施でき、請求項8の場合よりも少ない蓋部
材の着脱操作回数で放射性物質の搬入出が可能になり、
主蓋部材や副蓋部材のサイズに対応した請求項9より少
ない開口部を順次形成しながら放射性物質の搬入出を行
うことができるため、搬入出口の開口面積を必要最小限
に抑制することにより放射線の漏洩を十分に低減するこ
とができるという効果を奏する。A tenth aspect of the present invention is a method of attaching / detaching a split-type shielding lid, wherein a main lid member having a stepped portion reduced by a predetermined amount from an upper surface side to a lower surface side is provided on one end face and the other end face, respectively. A plurality of sub-lid members provided on one end surface and the other end surface with a stepped portion which is reduced and increased by a predetermined amount from the upper surface side to the lower surface side. Are arranged so as to overlap each other, so as to close the loading / unloading port of the storage main body, wherein the main lid member has a first member formed in the same shape as the sub lid member; The sub-cover member is formed of an inverted convex member obtained by subtracting the width of the first member from the cover member, and the sub-cover member is formed integrally with each stepped portion. Divisions arranged in a positive direction so that they are located on the side A first transfer port which is closed by the shielding cover,
A plurality of sets each including a second loading / unloading port closed with a split-type shielding lid arranged in the opposite direction so that the main lid member is located at the other end side have the same dimensions as the loading / unloading port in the longitudinal direction. It is arranged in parallel in any direction of the width direction of the loading / unloading port, and removes the inverted convex member of the first loading / unloading port and the second loading / unloading port and the first member of the first loading / unloading port in the specific set of the plurality of sets. A temporary placement step of forming an opening at the first loading / unloading port to enable the loading / unloading of the radioactive material by temporarily removing it at the standby position; and a step of radiating the storage body through the opening of the first loading / unloading port. A first loading / unloading step of loading / unloading a substance, and removing a first member or a sub-lid member adjacent to the opening of the second loading / unloading port, transferring the material to the opening of the first loading / unloading port, and renewing a new one. A first transfer step of forming an opening at a second loading / unloading port, A step out second input for performing loading and unloading of radioactive materials for the storage body through the opening of the inlet and outlet,
A second transfer step of removing the auxiliary lid member adjacent to the opening of the first loading / unloading port, transferring the sub lid member to the opening of the second loading / unloading port, and forming a new opening in the first loading / unloading port; A repetition step of repeating the first loading / unloading step, the first transfer step, the second loading / unloading step, and the second transfer step until the end of loading / unloading or interruption; and a main lid at the standby position after the repetition step. And a shielding step of transferring the member to the openings of the first loading / unloading port and the second loading / unloading port. According to the above configuration, the separate storage transfer step can also be performed in accordance with the method described in claim 9, and the loading and unloading of the radioactive substance can be performed with a smaller number of times of attaching and detaching the lid member than in the case of claim 8,
Since the loading and unloading of the radioactive material can be performed while sequentially forming fewer openings than in claim 9 corresponding to the size of the main lid member and the sub lid member, by suppressing the opening area of the loading and unloading to the minimum necessary. There is an effect that the leakage of radiation can be sufficiently reduced.
【0098】請求項11の発明は、請求項1ないし4の
何れか1項に記載の分割式遮蔽蓋であって、前記貯蔵庫
本体に対して所定幅Pの放射性物質が貯蔵されるように
なっており、前記搬入出口の幅をW、前記搬入出口の端
面から前記放射性物質の最外面までの距離をe、前記放
射性物質の隙間をc、前記搬入出口の蓋部材下面の支持
幅をf、前記主蓋部材の下面幅をLA、副蓋部材の下面
幅をLB、副蓋部材の下面幅で設置可能な放射性物質の
数量をm、主蓋部材および副蓋部材による分割数をNと
したとき、 LA≧LB+e+f ・・・(1) LB≧m(P+c) ・・・(2) LA+(N−1)LB=W+2f ・・・(3) これら条件式(1)〜(3)を満足する構成である。上
記の構成によれば、主蓋部材や副蓋部材が放射性物質を
搬入出する際の障害とならないため、効率良く搬入出す
ることができるという効果を奏する。According to an eleventh aspect of the present invention, there is provided the split type shielding lid according to any one of the first to fourth aspects, wherein a radioactive substance having a predetermined width P is stored in the storage body. The width of the loading / unloading port is W, the distance from the end face of the loading / unloading port to the outermost surface of the radioactive substance is e, the gap between the radioactive substances is c, the support width of the lower surface of the loading / unloading lid member is f, The lower surface width of the main lid member is LA, the lower surface width of the sub lid member is LB, the number of radioactive materials that can be installed at the lower surface width of the sub lid member is m, and the number of divisions by the main lid member and the sub lid member is N. When: LA ≧ LB + e + f (1) LB ≧ m (P + c) (2) LA + (N−1) LB = W + 2f (3) These conditional expressions (1) to (3) are satisfied. It is the structure which does. According to the above configuration, the main lid member and the sub lid member do not become an obstacle when the radioactive substance is carried in and out, so that there is an effect that the radioactive material can be carried in and out efficiently.
【図1】分割式遮蔽蓋の基本構造を示す説明図である。FIG. 1 is an explanatory diagram showing a basic structure of a division type shielding lid.
【図2】ピット式貯蔵庫本体の斜視図である。FIG. 2 is a perspective view of a pit type storage main body.
【図3】サイロ式貯蔵庫本体の斜視図である。FIG. 3 is a perspective view of a silo type storage main body.
【図4】蓋部材の係合部の例を示す図であり、(a)は
平面図、(b)はA−A線矢視断面図、(c)はB−B
線矢視断面図である。4A and 4B are diagrams illustrating an example of an engaging portion of a lid member, wherein FIG. 4A is a plan view, FIG. 4B is a cross-sectional view taken along line AA, and FIG.
FIG.
【図5】懸吊部材が係合部に係合する状態の例を示す図
であり、(a)は正面図、(b)は側面図である。5A and 5B are diagrams illustrating an example of a state in which a suspension member is engaged with an engagement portion, where FIG. 5A is a front view and FIG. 5B is a side view.
【図6】放射性物質の基本的な搬入過程を示す説明図で
あり、(a)は搬入開始前の状態、(b)は搬入開始直
後の状態、(c)は新たな開口部を形成する状態、
(d)は新たな開口部を介して搬入する状態、(e)は
搬入を完了した状態である。6A and 6B are explanatory diagrams showing a basic process of carrying in a radioactive substance, wherein FIG. 6A shows a state before the start of carrying in, FIG. 6B shows a state immediately after the start of carrying in, and FIG. Status,
(D) is a state in which the carry-in is performed through a new opening, and (e) is a state in which the carry-in is completed.
【図7】分割式遮蔽蓋を搬入途中で塞ぐ状態を示す説明
図である。FIG. 7 is an explanatory view showing a state in which a dividing type cover is closed during loading.
【図8】分割式遮蔽蓋の不具合を示す説明図である。FIG. 8 is an explanatory view showing a defect of the division type shielding lid.
【図9】分割式遮蔽蓋の構成図であり、(a)は搬入開
始前、(b)は搬入完了後である。9A and 9B are configuration diagrams of a division type shielding cover, where FIG. 9A is before the start of loading and FIG. 9B is after the loading is completed.
【図10】分割式遮蔽蓋の構成図であり、(a)は搬入
開始前、(b)は搬入完了後である。FIGS. 10A and 10B are configuration diagrams of a division type shielding cover, in which FIG. 10A is before a loading start and FIG. 10B is after a loading completion.
【図11】放射性物質の搬入過程を示す説明図であり、
(a)は搬入開始前の状態、(b)は搬入開始直後の状
態、(c)は新たな開口部を介して搬入する状態、
(d)は搬入を完了した状態である。FIG. 11 is an explanatory view showing a carrying-in process of a radioactive substance,
(A) is a state before the start of loading, (b) is a state immediately after the start of loading, (c) is a state of being loaded through a new opening,
(D) is a state where loading is completed.
【図12】蓋部材の正面図であり、(a)は副蓋部材の
正面図、(b)は主蓋部材の正面図である。12A and 12B are front views of a lid member, FIG. 12A is a front view of a sub lid member, and FIG. 12B is a front view of a main lid member.
【図13】分割式遮蔽蓋を搬入途中で塞ぐ状態を示す説
明図である。FIG. 13 is an explanatory view showing a state in which the dividing type cover is closed during loading.
【図14】段部の態様を示す説明図である。FIG. 14 is an explanatory view showing an aspect of a step portion.
【図15】分割式遮蔽蓋の構成図であり、(a)は搬入
開始前、(b)は搬入完了後である。FIGS. 15A and 15B are configuration diagrams of a division type shielding cover, in which FIG. 15A shows a state before carrying-in starts and FIG. 15B shows a state after carrying-in is completed.
【図16】段部の態様を示す説明図である。FIG. 16 is an explanatory view showing an aspect of a step portion.
【図17】分割式遮蔽蓋の構成図であり、(a)は搬入
開始前、(b)は搬入完了後である。17A and 17B are configuration diagrams of a division type shielding cover, wherein FIG. 17A shows a state before carrying-in is started, and FIG. 17B shows a state after carrying-in is completed.
【図18】分割式遮蔽蓋の構成図であり、(a)は搬入
開始前、(b)は搬入完了後である。FIGS. 18A and 18B are configuration diagrams of a division type shielding cover, in which FIG. 18A is a state before carrying-in is started, and FIG.
【図19】分割式遮蔽蓋における搬入出口幅方向の配列
状態を示す説明図である。FIG. 19 is an explanatory view showing an arrangement state of the division type cover in the width direction of the carry-in / out port.
【図20】分割式遮蔽蓋における搬入出口長手方向の配
列状態を示す説明図である。FIG. 20 is an explanatory diagram showing an arrangement state of the division type shielding lid in the carry-in / out port longitudinal direction.
【図21】分割式遮蔽蓋の配列状態を示す説明図であ
る。FIG. 21 is an explanatory view showing an arrangement state of a division type shielding lid.
【図22】放射性物質の搬入過程を示す説明図であり、
(a)は搬入開始前の状態、(b)は搬入開始直後の状
態、(c)は新たな開口部を形成する状態、(d)は新
たな開口部を介して搬入する状態、(e)は新たな次の
開口部を介して搬入する状態である。FIG. 22 is an explanatory view showing a carrying-in process of a radioactive substance,
(A) is a state before the start of carrying in, (b) is a state immediately after the start of carrying in, (c) is a state in which a new opening is formed, (d) is a state in which the carrying is performed through a new opening, (e). ) Indicates a state of being carried in through a new next opening.
【図23】放射性物質の搬入の過程を示す説明図であ
る。FIG. 23 is an explanatory view showing a process of carrying in a radioactive substance.
【図24】分割式遮蔽蓋を搬入途中で塞ぐ状態を示す説
明図である。FIG. 24 is an explanatory diagram showing a state in which the divisional cover is closed during loading.
【図25】分割式遮蔽蓋の配列状態を示す説明図であ
る。FIG. 25 is an explanatory diagram showing an arrangement state of the division type shielding lids.
【図26】分割式遮蔽蓋の配列状態を示す説明図であ
る。FIG. 26 is an explanatory diagram showing an arrangement state of the division type shielding lids.
【図27】分割式遮蔽蓋の配列状態を示す説明図であ
る。FIG. 27 is an explanatory diagram showing an arrangement state of the division type shielding lids.
【図28】分割式遮蔽蓋の配列状態を示す説明図であ
る。FIG. 28 is an explanatory diagram showing an arrangement state of a division type shielding lid.
【図29】放射性物質の搬入過程を示す説明図であり、
(a)は搬入開始前の状態、(b)は搬入開始直後の状
態、(c)は新たな開口部を介して搬入する状態、
(d)は新たな次の開口部を介して搬入する状態であ
る。FIG. 29 is an explanatory diagram showing a carrying-in process of a radioactive substance,
(A) is a state before the start of loading, (b) is a state immediately after the start of loading, (c) is a state of being loaded through a new opening,
(D) is a state where it is carried in through a new next opening.
【図30】放射性物質の搬入過程を示す説明図であり、
(a)は開口部を介して搬入する状態、(b)は搬入を
完了した状態である。FIG. 30 is an explanatory diagram showing a carrying-in process of a radioactive substance,
(A) is a state where it is carried in through the opening, and (b) is a state where the carry-in is completed.
【図31】分割式遮蔽蓋の各蓋部材のサイズおよび放射
性物質のサイズの関係を示す説明図である。FIG. 31 is an explanatory diagram showing the relationship between the size of each lid member and the size of a radioactive substance of a split type shielding lid.
【図32】接合面に傾斜を持たせ且つ主蓋部材を分割し
た場合の分割式遮蔽蓋の各蓋部材のサイズおよび放射性
物質のサイズの関係を示す説明図である。FIG. 32 is an explanatory view showing the relationship between the size of each lid member and the size of a radioactive substance of the split type shielding lid when the joining surface is inclined and the main lid member is divided.
【図33】分割式遮蔽蓋の各蓋部材のサイズおよび放射
性物質のサイズの関係を示す説明図である。FIG. 33 is an explanatory view showing the relationship between the size of each lid member and the size of a radioactive substance of the split type shielding lid.
【図34】従来の分割式遮蔽蓋の構造を示す図であり、
(a)は平面図、(b)はY−Y線矢視断面図、(c)
はX−X線矢視断面図である。FIG. 34 is a view showing the structure of a conventional split type shielding lid,
(A) is a plan view, (b) is a sectional view taken along line YY, (c).
Is a sectional view taken along the line XX.
【図35】放射線が漏洩する状態を示す説明図である。FIG. 35 is an explanatory diagram showing a state in which radiation leaks.
1 貯蔵庫本体 1a 第1搬入出口 2a〜2e 第1〜第5蓋部材 2a' 〜2e' 第6〜第10蓋部材 3 外周壁 4 仕切り壁 5 梁部材 6 懸吊部材 7 上部層 8 下部層 9 係合部 10 放射性物質 12 逆凸型部材 14〜18 第1〜第5蓋部材 21 主蓋部材 22 副蓋部材 DESCRIPTION OF SYMBOLS 1 Storage main body 1a 1st loading / unloading port 2a-2e 1st-5th lid member 2a'-2e '6th-10th lid member 3 Outer peripheral wall 4 Partition wall 5 Beam member 6 Suspension member 7 Upper layer 8 Lower layer 9 Engaging part 10 Radioactive substance 12 Inverted convex member 14-18 First to fifth lid member 21 Main lid member 22 Sub lid member
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【手続補正書】[Procedure amendment]
【提出日】平成10年11月17日(1998.11.
17)[Submission date] November 17, 1998 (1998.11.
17)
【手続補正1】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】0036[Correction target item name] 0036
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【0036】上記のような上部層7および下部層8の一
部を開口する操作を順に繰り返し(反復工程)、最終の
第10収容部(10)への放射性物質10の荷積みを終了す
ると、図6(e)に示すように、待機場所に仮置きして
いた第6蓋部材2a' を下部層8の開口部に移載する。
そして、第6蓋部材2a' の上面に第1蓋部材2aを載
置することによって、貯蔵庫本体1の搬入出口1aを塞
ぐ(遮蔽工程)。また、図7に示すように、最終の第1
0収容部(10)に至るまでの例えば第8収容部で放射性
物質10の搬入を中止する場合には、第8収容部の上
方に位置する開口部を塞ぐように、この開口位置に第6
蓋部材2a' と第1蓋部材2aとを移載する(遮蔽工
程)。尚、放射性物質10の搬出は、上述の動作と逆の
動作で行うことができるため、その説明を省略する。The above operation of opening a part of the upper layer 7 and a part of the lower layer 8 is repeated in order (repeating step), and when the loading of the radioactive substance 10 into the final tenth storage section (10) is completed, As shown in FIG. 6E, the sixth lid member 2a 'temporarily placed in the standby place is transferred to the opening of the lower layer 8.
Then, the loading / unloading port 1a of the storage main body 1 is closed by placing the first lid member 2a on the upper surface of the sixth lid member 2a '(shielding step). In addition, as shown in FIG.
For example, when the transport of the radioactive substance 10 is stopped in the eighth storage unit up to the zero storage unit (10) , the sixth position is set at the opening position so as to close the opening located above the eighth storage unit.
The lid member 2a 'and the first lid member 2a are transferred (shielding step). Note that the unloading of the radioactive substance 10 can be performed by an operation reverse to the above-described operation, and a description thereof will be omitted.
【手続補正2】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】0047[Correction target item name] 0047
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【0047】上記のような上部層7および下部層8の一
部を開口する操作を順に繰り返し(反復工程)、最終の
第10収容部(10)への放射性物質10の荷積みを終了す
ると、待機場所に仮置きしていた第1蓋部材2a(また
は2a’)を下部層8の開口部に移載すると共に、第1
蓋部材2aの上面に第6蓋部材2a' (または2a)を
載置する。そして、搬入出口1aの端部に残った開口部
に逆凸型部材12を移載することによって、搬入出口1
aを塞ぐ(遮蔽工程)。尚、放射性物質10の搬出は、
上述の動作と逆の動作で行うことができるため、その説
明を省略する。The operation of opening a part of the upper layer 7 and the lower layer 8 as described above is sequentially repeated (repeating step), and when the loading of the radioactive substance 10 into the final tenth storage part (10) is completed, The first lid member 2a (or 2a ′) temporarily placed in the standby place is transferred to the opening of the lower layer 8 and
The sixth lid member 2a '(or 2a) is placed on the upper surface of the lid member 2a. Then, by transferring the inverted convex member 12 to the opening remaining at the end of the loading / unloading port 1a, the loading / unloading port 1a is moved.
Close a (shielding step). In addition, carry out of the radioactive material 10
Since the operation can be performed in a manner reverse to the above operation, the description thereof is omitted.
【手続補正3】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】0056[Correction target item name] 0056
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【0056】上記のような搬入出口1aの一部を開口す
る操作を順に繰り返し(反復工程)、最終の第10収容
部(10)への放射性物質10の荷積みを終了すると、図1
1(d)に示すように、待機場所に仮置きしていた第1
蓋部材14を第10収容部(10)の上方の開口位置に移載
することにより開口部を塞ぐ(遮蔽工程)。また、図1
3に示すように、最終の第10収容部(10)に至るまでの
例えば第7収容部で放射性物質10の搬入を中止する
場合には、第7収容部の上方の開口位置に第1蓋部材
14を移載することにより開口部を塞ぐ(遮蔽工程)。
尚、放射性物質10の搬出は、上述の動作と逆の動作で
行うことができるため、その説明を省略する。The operation of opening a part of the loading / unloading port 1a as described above is repeated in order (repeating step), and when the loading of the radioactive substance 10 into the final tenth storage part (10) is completed, FIG.
As shown in FIG. 1 (d), the first temporary storage
The opening is closed by transferring the lid member 14 to the opening position above the tenth accommodation section (10) (shielding step). FIG.
As shown in FIG. 3, when the transport of the radioactive substance 10 is stopped in the seventh storage unit, for example, up to the final tenth storage unit (10) , the first lid is placed at the opening position above the seventh storage unit. The opening is closed by transferring the member 14 (shielding step).
Note that the unloading of the radioactive substance 10 can be performed by an operation reverse to the above-described operation, and a description thereof will be omitted.
【手続補正4】[Procedure amendment 4]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図6[Correction target item name] Fig. 6
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図6】 FIG. 6
【手続補正5】[Procedure amendment 5]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図9[Correction target item name] Fig. 9
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図9】 FIG. 9
【手続補正6】[Procedure amendment 6]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図10[Correction target item name] FIG.
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図10】 FIG. 10
【手続補正7】[Procedure amendment 7]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図11[Correction target item name] FIG.
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図11】 FIG. 11
【手続補正8】[Procedure amendment 8]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図15[Correction target item name] FIG.
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図15】 FIG.
【手続補正9】[Procedure amendment 9]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図31[Correction target item name] FIG.
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図31】 FIG. 31
【手続補正10】[Procedure amendment 10]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図32[Correction target item name] FIG. 32
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図32】 FIG. 32
【手続補正11】[Procedure amendment 11]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図33[Correction target item name] FIG.
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図33】 FIG. 33
Claims (11)
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋におい
て、 前記主蓋部材は、各段部ごとに層状に分割された層状主
部材からなり、 前記副蓋部材は、各段部ごとに層状に分割された層状副
部材からなることを特徴とする分割式遮蔽蓋。1. A main lid member having a stepped portion on one end surface and the other end surface which is reduced by a predetermined amount from the upper surface side to the lower surface side, and reduced and increased by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-lid members each having a step on one end surface and the other end surface, and a partition for closing the loading / unloading port of the storage main body by arranging these main lid members and sub-lid members while overlapping the steps. In the type shielding lid, the main lid member includes a layered main member divided into layers for each step, and the sub lid member includes a layered sub member divided into layers for each step. Characteristic split-type shielding lid.
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋におい
て、 前記主蓋部材は、前記副蓋部材と同一幅で各段部ごとに
層状に分割された層状主部材と、前記主蓋部材から前記
副蓋部材の幅を差し引いた逆凸型部材とからなり、 前記副蓋部材は、各段部ごとに層状に分割された層状副
部材からなることを特徴とする分割式遮蔽蓋。2. A main lid member having a stepped portion on one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface to the lower surface, and reduced and increased by a predetermined amount from the upper surface to the lower surface. A plurality of sub-lid members each having a step on one end surface and the other end surface, and a partition for closing the loading / unloading port of the storage main body by arranging these main lid members and sub-lid members while overlapping the steps. In the type shielding lid, the main lid member is a layered main member having the same width as the sub lid member and divided into layers at each step, and an inverted convex obtained by subtracting the width of the sub lid member from the main lid member. A split type shielding lid comprising: a mold member; and wherein the sub-lid member is formed of a layered sub-member divided into layers for each step.
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋におい
て、 前記主蓋部材は、各段部ごとに層状に分割された層状主
部材からなり、 前記副蓋部材は、各段部が一体的に形成されていること
を特徴とする分割式遮蔽蓋。3. A main lid member having a stepped portion on one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface to the lower surface, and reduced and increased by a predetermined amount from the upper surface to the lower surface. A plurality of sub-lid members each having a step on one end surface and the other end surface, and a partition for closing the loading / unloading port of the storage main body by arranging these main lid members and sub-lid members while overlapping the steps. In the type shielding lid, the main lid member is composed of a layered main member divided into layers for each step portion, and the sub lid member is formed such that each step portion is integrally formed. Type shielding lid.
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋におい
て、 前記主蓋部材は、前記副蓋部材と同一形状に形成された
第1部材と、前記主蓋部材から前記第1部材の幅を差し
引いた逆凸型部材とからなり、 前記副蓋部材は、各段部が一体的に形成されていること
を特徴とする分割式遮蔽蓋。4. A main lid member provided with a stepped portion at one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface side to the lower surface side, and reduced and increased by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-lid members each having a step on one end surface and the other end surface, and a partition for closing the loading / unloading port of the storage main body by arranging these main lid members and sub-lid members while overlapping the steps. In the type shielding lid, the main lid member includes a first member formed in the same shape as the sub lid member, and an inverted convex member obtained by subtracting a width of the first member from the main lid member. The sub-lid member is a split type shielding lid, wherein each step portion is integrally formed.
着脱方法であって、 前記主蓋部材を抜脱して待機位置に仮置きすることによ
って、該主蓋部材の抜脱位置に開口部を形成する仮置き
工程と、 前記開口部を介して貯蔵庫本体に対する放射性物質の搬
入出を行う搬入出工程と、 前記開口部に隣接する副蓋部材を層状副部材ごとに該開
口部に移載して新たな開口部を形成する移載工程と、 前記搬入出工程と前記移載工程とを搬入出の終了または
中断まで繰り返す反復工程と、 前記反復工程後に前記待機位置の主蓋部材を前記開口部
に移載する遮蔽工程とを有することを特徴とする分割式
遮蔽蓋の着脱方法。5. The method according to claim 1, wherein the main cover member is withdrawn and temporarily placed at a standby position, so that the main cover member is opened and removed at the withdrawal position. A temporary placing step of forming a portion, a loading / unloading step of loading / unloading the radioactive substance to / from the storage body through the opening, and transferring a sub lid member adjacent to the opening to the opening for each layered sub member. A loading step of loading and forming a new opening; a repeating step of repeating the loading / unloading step and the loading step until the loading / unloading is completed or interrupted; And a shielding step of transferring to the opening.
着脱方法であって、 前記主蓋部材を抜脱して待機位置に仮置きすることによ
って、該主蓋部材の抜脱位置に開口部を形成する仮置き
工程と、 前記開口部を介して貯蔵庫本体に対する放射性物質の搬
入出を行う搬入出工程と、 前記開口部に隣接する副蓋部材を抜脱して水平面で旋回
した後、該開口部に移載して新たな開口部を形成する旋
回移載工程と、 前記搬入出工程と前記旋回移載工程とを搬入出の終了ま
たは中断まで繰り返す反復工程と、 前記反復工程後に前記待機位置の主蓋部材を前記開口部
に移載する遮蔽工程とを有することを特徴とする分割式
遮蔽蓋の着脱方法。6. The method according to claim 3, wherein the main cover member is withdrawn and temporarily placed at a standby position, so that the main cover member is opened at the withdrawal position. A temporary placement step of forming a part, a loading / unloading step of loading / unloading the radioactive substance to / from the storage body through the opening, and after turning off in a horizontal plane by pulling out a sub lid member adjacent to the opening, A swivel transfer step of transferring the wafer to the opening to form a new opening, a repetition step of repeating the loading / unloading step and the swivel transfer step until loading or unloading is completed or interrupted, and the standby after the repetition step A step of transferring a main lid member at a position to the opening.
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方
法であって、 前記主蓋部材を抜脱して待機位置に仮置きすることによ
って、該主蓋部材の抜脱位置に開口部を形成する仮置き
工程と、 前記開口部を介して貯蔵庫本体に対する放射性物質の搬
入出を行う搬入出工程と、 前記開口部に隣接する副蓋部材を抜脱して水平面で旋回
した後、該開口部に移載して新たな開口部を形成する旋
回移載工程と、 前記搬入出工程と前記旋回移載工程とを搬入出の終了ま
たは中断まで繰り返す反復工程と、 前記反復工程後に前記待機位置の主蓋部材を前記開口部
に移載する遮蔽工程とを有することを特徴とする分割式
遮蔽蓋の着脱方法。7. A main lid member having a stepped portion, which is reduced by a predetermined amount from the upper surface side to the lower surface side, on each of one end surface and the other end surface, and is reduced and increased by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-lid members each having a step on one end surface and the other end surface, and a partition for closing the loading / unloading port of the storage main body by arranging these main lid members and sub-lid members while overlapping the steps. A method of attaching and detaching the main cover member, wherein the main cover member is withdrawn and temporarily placed at a standby position to form an opening at the withdrawal position of the main lid member. A loading / unloading step of loading / unloading the radioactive material to / from the storage body via a sub-lid member adjacent to the opening, and turning in a horizontal plane, and then transferring to the opening to form a new opening Rotating transfer process, A repetition step of repeating the unloading step and the turning transfer step until the loading or unloading is completed or interrupted, and a shielding step of transferring the main lid member at the standby position to the opening after the repetition step. How to attach / detach a split-type shielding lid.
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方
法であって、 前記貯蔵庫本体には、前記主蓋部材が一端側に位置する
ように正方向に配列された分割式遮蔽蓋で塞がれた第1
搬入出口と、前記主蓋部材が他端側に位置するように逆
方向に配列された分割式遮蔽蓋で塞がれた複数の第2搬
入出口とが、同一寸法で搬入出口長手方向か搬入出口幅
方向の何れかの方向に並列配置されており、 前記第1搬入出口および特定の第2搬入出口の主蓋部材
をそれぞれ抜脱して待機位置に仮置きすることによっ
て、各主蓋部材の抜脱位置に開口部を形成する仮置き工
程と、 前記第1搬入出口の開口部を介して貯蔵庫本体に対する
放射性物質の搬入出を行う搬入出工程と、 前記第1搬入出口および前記第2搬入出口の開口部に隣
接する副蓋部材をそれぞれ抜脱し、前記第2搬入出口お
よび第1搬入出口の開口部にそれぞれ移載して新たな開
口部を形成する移載工程と、 前記搬入出工程と前記移載工程とを搬入出の終了または
中断まで繰り返す反復工程と、 前記反復工程において第1搬入出口の開口位置が最端部
まで移動した後に、前記第1搬入出口の開口部に次の第
2搬入出口の主蓋部材を移載し、前記特定の第2搬入出
口を第1搬入出口とし、前記次の第2搬入出口を特定の
第2搬入出口とした後、これら新たな第1搬入出口と第
2搬入出口との間で前記反復工程を行う別庫移行工程
と、 前記反復工程後に、前記待機位置の主蓋部材を前記第1
搬入出口および第2搬入出口の開口部にそれぞれ移載す
る遮蔽工程とを有することを特徴とする分割式遮蔽蓋の
着脱方法。8. A main lid member provided with a stepped portion on one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface to the lower surface, and reduced and increased by a predetermined amount from the upper surface to the lower surface. A plurality of sub-lid members each having a step on one end surface and the other end surface, and a partition for closing the loading / unloading port of the storage main body by arranging these main lid members and sub-lid members while overlapping the steps. A method for mounting and dismounting a shielding cover, wherein the storage body is closed with a divided shielding lid arranged in a forward direction such that the main lid member is located at one end side.
The loading / unloading port and a plurality of second loading / unloading ports, which are closed by split type shielding lids arranged in the opposite direction so that the main lid member is located on the other end side, have the same dimensions and are located in the loading / unloading longitudinal direction or the loading / unloading port. It is arranged in parallel in any direction of the outlet width direction, and the main lid members of the first loading / unloading port and the specific second loading / unloading port are respectively pulled out and temporarily placed at the standby position, whereby each main lid member is A temporary placement step of forming an opening at the extraction position, a loading / unloading step of loading / unloading the radioactive material to / from the storage body through the opening of the first loading / unloading port, the first loading / unloading port and the second loading / unloading step. A transfer step in which the sub-lid members adjacent to the opening of the outlet are respectively removed and transferred to the openings of the second loading / unloading port and the first loading / unloading port to form a new opening; And the transfer process are completed or interrupted. And after the opening position of the first loading / unloading port has moved to the end in the repeating step, transferring the main lid member of the next second loading / unloading port to the opening of the first loading / unloading port, After the specific second loading / unloading port is defined as a first loading / unloading port and the next second loading / unloading port is defined as a specific second loading / unloading port, the repetition is performed between the new first loading / unloading port and the second loading / unloading port. Moving the main lid member at the standby position to the first lid after the repetition step.
And a shielding step of transferring the data to the opening of the loading / unloading port and the opening of the second loading / unloading port, respectively.
減少された段部を一端面および他端面にそれぞれ備えた
主蓋部材と、上面側から下面側にかけて所定量単位で減
少および増加された段部を一端面および他端面にそれぞ
れ備えた複数の副蓋部材とを有し、これら主蓋部材およ
び副蓋部材を段部同士を重複させながら配列することに
より貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱方
法であって、 前記貯蔵庫本体には、前記主蓋部材が一端側に位置する
ように正方向に配列された分割式遮蔽蓋で塞がれた第1
搬入出口と、前記主蓋部材が他端側に位置するように逆
方向に配列された分割式遮蔽蓋で塞がれた第2搬入出口
とを一組とする複数組が、同一寸法で搬入出口長手方向
か搬入出口幅方向の何れかの方向に並列配置されてお
り、 前記複数組中の特定組における第1搬入出口および第2
搬入出口の主蓋部材をそれぞれ抜脱して待機位置に仮置
きすることによって、各主蓋部材の抜脱位置に開口部を
形成する仮置き工程と、 前記第1搬入出口の開口部を介して貯蔵庫本体に対する
放射性物質の搬入出を行う第1搬入出工程と、 前記第2搬入出口の開口部に隣接する副蓋部材を抜脱
し、前記第1搬入出口の開口部に移載して新たな開口部
を第2搬入出口に形成する第1移載工程と、 前記第2搬入出口の開口部を介して貯蔵庫本体に対する
放射性物質の搬入出を行う第2搬入出工程と、 前記第1搬入出口の開口部に隣接する副蓋部材を抜脱
し、前記第2搬入出口の開口部に移載して新たな開口部
を第1搬入出口に形成する第2移載工程と、 前記第1搬入出工程、前記第1移載工程、前記第2搬入
出工程および前記第2移載工程を搬入出の終了または中
断まで繰り返す反復工程と、 前記反復工程後に前記待機位置の主蓋部材を前記第1搬
入出口および第2搬入出口の開口部にそれぞれ移載する
遮蔽工程とを有することを特徴とする分割式遮蔽蓋の着
脱方法。9. A main lid member having a stepped portion on one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface to the lower surface, and reduced and increased by a predetermined amount from the upper surface to the lower surface. A plurality of sub-lid members each having a step on one end surface and the other end surface, and a partition for closing the loading / unloading port of the storage main body by arranging these main lid members and sub-lid members while overlapping the steps. A method for mounting and dismounting a shielding cover, wherein the storage body is closed with a divided shielding lid arranged in a forward direction such that the main lid member is located at one end side.
A plurality of sets each including a loading / unloading port and a second loading / unloading port closed by a split-type shielding lid arranged in the opposite direction so that the main lid member is located on the other end side, are loaded with the same dimensions. The first loading / unloading port and the second loading / unloading port in a specific set of the plurality of sets are arranged in parallel in any one of the outlet longitudinal direction and the loading / unloading width direction.
By temporarily removing the main lid members at the loading / unloading ports and temporarily placing them at the standby position, forming temporary openings at the withdrawn / unloading positions of the respective main lid members, and via the opening of the first loading / unloading port. A first loading / unloading step of loading / unloading the radioactive material to / from the storage main body, and withdrawing a sub-lid member adjacent to the opening of the second loading / unloading port, and transferring the radioactive substance to the opening of the first loading / unloading port, and renewing the new A first transfer step of forming an opening in a second loading / unloading port; a second loading / unloading step of loading / unloading a radioactive substance into / from a storage body via the opening of the second loading / unloading port; A second transfer step of removing the sub-lid member adjacent to the opening of the second transfer opening and transferring it to the opening of the second transfer opening to form a new opening at the first transfer opening; Step, the first transfer step, the second loading / unloading step, and the second transfer step. A repetition step of repeating until the entry or exit is completed or interrupted; and a shielding step of transferring the main lid member at the standby position to the openings of the first loading / unloading port and the second loading / unloading port after the repeating step. How to attach / detach a split-type shielding lid.
で減少された段部を一端面および他端面にそれぞれ備え
た主蓋部材と、上面側から下面側にかけて所定量単位で
減少および増加された段部を一端面および他端面にそれ
ぞれ備えた複数の副蓋部材とを有し、これら主蓋部材お
よび副蓋部材を段部同士を重複させながら配列すること
により貯蔵庫本体の搬入出口を塞ぐ分割式遮蔽蓋の着脱
方法であって、 前記主蓋部材は、前記副蓋部材と同一形状に形成された
第1部材と、前記主蓋部材から前記第1部材の幅を差し
引いた逆凸型部材とからなり、前記副蓋部材は、各段部
が一体的に形成されており、 前記貯蔵庫本体には、前記主蓋部材が一端側に位置する
ように正方向に配列された分割式遮蔽蓋で塞がれた第1
搬入出口と、前記主蓋部材が他端側に位置するように逆
方向に配列された分割式遮蔽蓋で塞がれた第2搬入出口
とを一組とする複数組が、同一寸法で搬入出口長手方向
か搬入出口幅方向の何れかの方向に並列配置されてお
り、 前記複数組中の特定組における第1搬入出口および第2
搬入出口の逆凸型部材および第1搬入出口の第1部材を
それぞれ抜脱して待機位置に仮置きすることによって、
第1搬入出口に放射性物質の搬入出を可能とする開口部
を形成する仮置き工程と、 前記第1搬入出口の開口部を介して貯蔵庫本体に対する
放射性物質の搬入出を行う第1搬入出工程と、 前記第2搬入出口の開口部に隣接する第1部材または副
蓋部材を抜脱し、前記第1搬入出口の開口部に移載して
新たな開口部を第2搬入出口に形成する第1移載工程
と、 前記第2搬入出口の開口部を介して貯蔵庫本体に対する
放射性物質の搬入出を行う第2搬入出工程と、 前記第1搬入出口の開口部に隣接する副蓋部材を抜脱
し、前記第2搬入出口の開口部に移載して新たな開口部
を第1搬入出口に形成する第2移載工程と、 前記第1搬入出工程、前記第1移載工程、前記第2搬入
出工程および前記第2移載工程を搬入出の終了または中
断まで繰り返す反復工程と、 前記反復工程後に前記待機位置の主蓋部材を前記第1搬
入出口および第2搬入出口の開口部にそれぞれ移載する
遮蔽工程とを有することを特徴とする分割式遮蔽蓋の着
脱方法。10. A main lid member provided with a stepped portion on one end surface and the other end surface, which is reduced by a predetermined amount from the upper surface side to the lower surface side, and reduced and increased by a predetermined amount unit from the upper surface side to the lower surface side. A plurality of sub-lid members each having a step on one end surface and the other end surface, and a partition for closing the loading / unloading port of the storage main body by arranging these main lid members and sub-lid members while overlapping the steps. A method for attaching and detaching a shielding cover, wherein the main lid member is a first member formed in the same shape as the sub lid member, and an inverted convex member obtained by subtracting a width of the first member from the main lid member. Wherein the sub lid member is formed integrally with each stepped portion, and the storage main body has a divided shielding lid arranged in the forward direction such that the main lid member is located at one end side. 1st blocked by
A plurality of sets each including a loading / unloading port and a second loading / unloading port closed by a split-type shielding lid arranged in the opposite direction so that the main lid member is located on the other end side, are loaded with the same dimensions. The first loading / unloading port and the second loading / unloading port in a specific set of the plurality of sets are arranged in parallel in any one of the outlet longitudinal direction and the loading / unloading width direction.
By pulling out the inverted convex member of the loading / unloading port and the first member of the first loading / unloading port and temporarily placing them at the standby position,
A temporary placement step of forming an opening at the first loading / unloading port to enable the loading and unloading of the radioactive material, and a first loading / unloading step of loading / unloading the radioactive substance to / from the storage body via the opening of the first loading / unloading port. And removing the first member or sub-lid member adjacent to the opening of the second loading / unloading port, transferring the first member to the opening of the first loading / unloading port, and forming a new opening in the second loading / unloading port. 1 transfer step, a second loading / unloading step of loading / unloading the radioactive material to / from the storage body through the opening of the second loading / unloading port, and removing a sub lid member adjacent to the opening of the first loading / unloading port. Removing, transferring to the opening of the second loading / unloading port, and forming a new opening in the first loading / unloading port, the first loading / unloading step, the first loading / unloading step, 2 The loading / unloading step and the second transfer step are repeated until the loading / unloading is completed or interrupted. A detaching step, and a shielding step of transferring the main lid member at the standby position to the openings of the first loading / unloading port and the second loading / unloading port after the repetition step, respectively. Method.
射性物質が貯蔵されるようになっており、 前記搬入出口の幅をW、前記搬入出口の端面から前記放
射性物質の最外面までの距離をe、前記放射性物質の隙
間をc、前記搬入出口の蓋部材下面の支持幅をf、前記
主蓋部材の下面幅をLA、副蓋部材の下面幅をLB、副
蓋部材の下面幅で設置可能な放射性物質の数量をm、主
蓋部材および副蓋部材による分割数をNとしたとき、 LA≧LB+e+f ・・・(1) LB≧m(P+c) ・・・(2) LA+(N−1)LB=W+2f ・・・(3) これら条件式(1)〜(3)を満足することを特徴とす
る請求項1ないし4の何れか1項に記載の分割式遮蔽
蓋。11. A radioactive substance having a predetermined width P is stored in the storage body, wherein the width of the loading / unloading port is W, and a distance from an end face of the loading / unloading port to an outermost surface of the radioactive substance. E, the gap between the radioactive materials is c, the support width of the lower surface of the lid member at the loading / unloading port is f, the lower surface width of the main lid member is LA, the lower surface width of the sub lid member is LB, the lower surface width of the sub lid member is When the number of radioactive materials that can be installed is m and the number of divisions by the main lid member and the sub lid member is N, LA ≧ LB + e + f (1) LB ≧ m (P + c) (2) LA + (N -1) LB = W + 2f (3) The split type shielding lid according to any one of claims 1 to 4, wherein the conditional expressions (1) to (3) are satisfied.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32360798A JP3842458B2 (en) | 1998-11-13 | 1998-11-13 | Attaching / detaching the split-type shielding lid of the radioactive material storage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32360798A JP3842458B2 (en) | 1998-11-13 | 1998-11-13 | Attaching / detaching the split-type shielding lid of the radioactive material storage |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000147194A true JP2000147194A (en) | 2000-05-26 |
JP3842458B2 JP3842458B2 (en) | 2006-11-08 |
Family
ID=18156615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32360798A Expired - Lifetime JP3842458B2 (en) | 1998-11-13 | 1998-11-13 | Attaching / detaching the split-type shielding lid of the radioactive material storage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3842458B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013057556A (en) * | 2011-09-07 | 2013-03-28 | Showa Concrete Ind Co Ltd | Storage facility for sewage sludge containing radioactive material |
JP2013057557A (en) * | 2011-09-07 | 2013-03-28 | Showa Concrete Ind Co Ltd | Temporary storage facility for sewage sludge containing radioactive material |
JP2013152119A (en) * | 2012-01-24 | 2013-08-08 | Taiheiyo Cement Corp | Container for radioactive waste preservation |
JP2014089082A (en) * | 2012-10-29 | 2014-05-15 | Landes Co Ltd | Radiation shield lid for underground pit |
JP2014206503A (en) * | 2013-04-15 | 2014-10-30 | 清水建設株式会社 | Containment vessel for radioactive contaminants |
-
1998
- 1998-11-13 JP JP32360798A patent/JP3842458B2/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013057556A (en) * | 2011-09-07 | 2013-03-28 | Showa Concrete Ind Co Ltd | Storage facility for sewage sludge containing radioactive material |
JP2013057557A (en) * | 2011-09-07 | 2013-03-28 | Showa Concrete Ind Co Ltd | Temporary storage facility for sewage sludge containing radioactive material |
JP2013152119A (en) * | 2012-01-24 | 2013-08-08 | Taiheiyo Cement Corp | Container for radioactive waste preservation |
JP2014089082A (en) * | 2012-10-29 | 2014-05-15 | Landes Co Ltd | Radiation shield lid for underground pit |
JP2014206503A (en) * | 2013-04-15 | 2014-10-30 | 清水建設株式会社 | Containment vessel for radioactive contaminants |
Also Published As
Publication number | Publication date |
---|---|
JP3842458B2 (en) | 2006-11-08 |
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