JP2019032323A - Transport method of contaminated soil accommodated in flexible container and device - Google Patents
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- 238000000034 method Methods 0.000 title claims description 9
- 239000002689 soil Substances 0.000 title abstract description 10
- 238000003860 storage Methods 0.000 claims abstract description 88
- 239000002901 radioactive waste Substances 0.000 claims abstract description 22
- 238000012432 intermediate storage Methods 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 2
- 238000011109 contamination Methods 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 5
- 230000002285 radioactive effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 1
- 239000000725 suspension Substances 0.000 description 7
- 238000005202 decontamination Methods 0.000 description 6
- 230000003588 decontaminative effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 206010073306 Exposure to radiation Diseases 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Abstract
Description
本発明はフレキシブルコンテナに収容して仮置場などに保管されている汚染土壌の中間貯蔵施設への輸送方法および装置に関する。
The present invention relates to a method and apparatus for transporting contaminated soil to an intermediate storage facility housed in a flexible container and stored in a temporary storage site or the like.
平成２３年３月の福島原発事故で県内外の各地に広汎に生じた放射能汚染について、環境省の除染基準では特措法に基づいて汚染対象となる区域を空間線量が所定値以下となるよう除染し、除染によって生じる放射性廃棄物は原則として各地方自治体の仮置場に、それが利用できないときは個々の除染現場の周辺の保管所に保管し、その後当初約３年を目途として設置が予定される中間貯蔵施設に輸送され、次いで最終処分場で処理することとされていたが、現在ではようやくそれらの一部について輸送が開始されたはかりである。オリンピックイヤーの２０２０年(平成３２年)をもって輸送完了予定とされているが、予定通り進行したとしても今後さらに大幅な遅れが見込まれる。 Regarding the radioactive contamination that has occurred extensively in and outside the prefecture in the March 2011 Fukushima nuclear accident, the air dose in the area subject to contamination in the decontamination standards of the Ministry of the Environment is less than the prescribed value based on the Special Measures Law In principle, radioactive waste generated by decontamination is stored in the temporary storage area of each local government, and when it is not available, it is stored in a storage area around each decontamination site. It was supposed to be transported to the intermediate storage facility where it is scheduled to be installed and then processed at the final disposal site, but now it is the scale that has finally started transporting some of them. Although it is scheduled to be completed in 2020, the year of the Olympic year, even if it proceeds as planned, there will be a greater delay in the future.
放射廃棄物としての土壌や植物体は耐水性のある大型土のうの形態をとる合成樹脂・繊維系の袋体とそれに付帯する吊りベルトとからなるフレキシブルコンテナに密封されて仮置場等に保管される。
放射性廃棄物を保管する時には外部への飛散、二次汚染を生じないようにこれらをフレコン等に収容して地下に段積みし、又は地上に保管する場合には覆土およびシート掛け等をする。
Soil and plants as radioactive waste are sealed in a flexible container consisting of a synthetic resin / fiber bag in the form of a water-resistant large sandbag and an attached suspension belt, and stored in a temporary storage site. .
When storing radioactive wastes, they should be stored in a flexible container or the like and stacked underground so that they do not scatter to the outside or cause secondary contamination, or cover them with soil and sheets when stored on the ground.
フレキシブルコンテナは大量の土壌又は粒状農産物等を収容輸送するために一般的に用いられている容量が約０．５トン〜２トン程度の収容バッグであり、繰り返しの使用を予定したランニング形のフレキシブルコンテナと１回だけの使用で使い捨てとなる強度や耐用年数がそれらよりも劣るクロス形のフレキシブルコンテナとに大別される（以下場合によってフレコンという）。除染ガイドラインではランニング形のフレコンの使用が推奨されているが生産量が追いつかないため実際には寿命の短いクロス形のフレコン等も用いられている。 A flexible container is a storage bag with a capacity of about 0.5 to 2 tons that is generally used for storing and transporting a large amount of soil or granular agricultural products. The container is roughly divided into a cross-type flexible container that has a strength and useful life that is disposable after only one use (hereinafter referred to as a flexible container in some cases). In the decontamination guidelines, the use of running-type flexible containers is recommended, but since the production volume cannot keep up, cross-shaped flexible containers with a short life are also used.
フレコンは前記のように一般的な土壌や粒状農産物の大量の収容／輸送を目的としたものであって、放射性廃棄物を含む土壌等の収容を予定したものではない。したがって、たとえばフレコンの自然劣化（風化）についてはランニング形については自然光を模似したＵＶの照射に対して数年（２〜７年）の耐用年数があるものとされており、放射性廃棄物の保管に用いる場合には直接外気に触れていないので比較的劣化が少ないと推定されているが、セシウム等からの放射線（ガンマー線）を照射された状態によってこの耐用年数がどのように変化するかは現在具体的には知られていない。汚染土壌等を収容したフレコンは前記のように密封されて地下に保管され、地上保管の場合でも覆土されてシートで覆ってあるため、外部からは破損の状況は確認できないが、一部野積みにされているフレコンについては風化して破損したり、植物の芽が袋体を破って伸びていることがすでに発見されて問題化しており、各地での仮置場のフレコンについてはすでに相当程度劣化が進んでいるものと考えられる。 As described above, the flexible container is intended to contain / transport a large amount of general soil and granular agricultural products, and is not intended to contain soil containing radioactive waste. Therefore, for example, with regard to natural deterioration (weathering) of flexible containers, the running type is supposed to have a useful life of several years (2 to 7 years) against UV irradiation that mimics natural light. When used for storage, it is estimated that there is relatively little deterioration because it does not touch the outside air directly, but how does this useful life change depending on the state of radiation (gamma rays) from cesium, etc. Is not currently known specifically. The FIBC containing contaminated soil is sealed and stored underground as described above, and even in the case of ground storage, it is covered with soil and covered with a sheet. It has already been discovered that the flexible containers that have been weathered are damaged due to weathering, or that the buds of the plants are growing by breaking the bags, and the flexible containers in temporary storage places in various places have already deteriorated considerably Is considered to be progressing.
放射性廃棄物の保管や輸送の問題は我国において始めて当面する問題であり、その課題を解決するために提起された公知の技術文献はほとんど存在しない。仮置場で保管中のフレコンが劣化により破損を生じて放射性廃棄物が散逸又は漏出して放射能漏れを生じている場合にはこのフレコンから放射性廃棄物を取り出して新しいフレコンに移しておく等の対策が提案されている。特開２０１７−６５７９４号（特許文献１）にはフレコンに収容された放射性廃棄物の取出し／詰替えのためにフレコン底部を破断する技術が提案されている。 The problem of storage and transportation of radioactive waste is the first problem in our country, and there are few well-known technical literatures proposed to solve the problem. If the FIBC stored in the temporary storage site is damaged due to deterioration and the radioactive waste is dissipated or leaked, the radioactive waste is taken out from this FIBC and transferred to a new FIBC Countermeasures have been proposed. Japanese Patent Laying-Open No. 2017-65794 (Patent Document 1) proposes a technique for breaking the bottom of the flexible container in order to take out / refill the radioactive waste contained in the flexible container.
しかしこの技術は中間貯蔵施設における放射性廃棄物の減容処理に先立って分別のためにフレコンを破袋して放射性廃棄物を取り出すために提案されたものであって、仮置場から中間貯蔵施設への放射性廃棄物の輸送を意図して提案されたものではない。 However, this technology was proposed to break up the flexible containers for separation and take out the radioactive waste prior to volume reduction processing of the intermediate waste at the intermediate storage facility. It was not proposed with the intention of transporting radioactive waste.
特開２０１６−１５１４１５号には弾性シート付のモッコが提案されており、これは仮置場等に保管されているフレコンをモッコにのせて中間貯蔵施設に輸送することを意図したものであり、フレコンを包んだモッコをまとめてクレーン等で吊上げて処理するものである。特許文献２によれば放射性廃棄物はフレコンに収容されたままでモッコに包まれて輸送されるので取扱い操作自体は簡単である。フレコンは外部への放射能漏れ防止するためたとえ輸送期間中でも厳重な密封状態にしておくことが求められているが、特許文献２ではをフレコンが保管中にすでに破損していたり輸送中に加わる衝撃によって破損した場合、外部に対する放射能漏れを完全に防止するように全体を密封しておく対策はとられていない。 Japanese Patent Application Laid-Open No. 2006-151415 proposes a mocco with an elastic sheet, which is intended for transporting a flexible container stored in a temporary storage place or the like to an intermediate storage facility. The mocco wrapped around is collected and lifted with a crane or the like. According to Patent Document 2, since the radioactive waste is contained in a flexible container and transported by being wrapped in mocco, the handling operation itself is simple. In order to prevent leakage of radioactive rays to the outside, it is required that the flexible container be kept tightly sealed even during the transportation period. However, in Patent Document 2, the flexible container is already damaged during storage or the impact applied during transportation. In case of damage, no measures have been taken to completely seal the whole so as to completely prevent radiation leakage to the outside.
仮置場などに保管されているフレコンを中間貯蔵施設に輸送する場合には、フレコンに付設している吊りベルト（把手）をクレーンで吊上げてダンプトラック等の輸送手段に積込み／積下しをするが、この際のフレコンの重量自体によって加わる力や操作中のゆれや衝突による力で生地の劣化したフレコンにほころびや破れが生じると、吊りベルトが破損したり、内部の放射性廃棄物が散逸して作業者や一般の生活環境に放射能漏れによる被曝を生じさせるおそれがある。 When transporting FIBC stored in a temporary storage site to an intermediate storage facility, lift the lifting belt (handle) attached to the FIBC with a crane and load / unload it onto a transportation means such as a dump truck. However, if the FIBC deteriorated due to the force applied by the weight of the FIBC itself, the vibration during operation, or the force of the collision causes breakage or tearing, the suspension belt may be damaged or the radioactive waste inside will be dissipated. There is a risk of radiation exposure to workers and the general living environment.
フレコンの輸送は大型車によって仮置場から中間貯蔵施設に直接輸送する直行型と周辺の校庭などに一時的に現場保管したものを一旦積込場まで集荷し、さらにこれらをまとめて中間貯蔵施設に輸送する集約型とに分けられるが、後者の場合にはフレコンの吊上げ／吊下げの移動機会が増えるのでその分だけ加わる応力や衝突力による破損の機会が一層多くなる。 Flexible containers are transported directly to the intermediate storage facility by direct transportation from the temporary storage site to the intermediate storage facility by large vehicles, and temporarily stored in the surrounding school yard, etc. In the latter case, the chance of lifting / hanging the flexible container is increased, so that the chance of breakage due to the applied stress and impact force is further increased.
パイロット輸送では水漏れの対策としてフレコンを防水容器でさらに密封して輸送することも一部で行われたが、その分コストが嵩み、特に防水容器にフレコンを吊上げ／吊下す作業が増大するので、作業中のフレコンの破袋の惧れが増大する。また今後の実際の輸送でフレコンの全数について防水容器を用いることはコスト上好ましくないので、それを必要とするフレコンを分別して選択的に防水容器を使用することも考えられるが、どの程度までの含水率でのフレコンから防水容器を使用すべきかを決定することは容易ではない。 In pilot transportation, some FIBCs were further sealed and transported in waterproof containers as a countermeasure against water leakage. However, the cost increased, and the work for lifting / suspending FIBCs from waterproof containers was particularly increased. As a result, there is an increased risk of flexible container breakage during work. In addition, since it is not preferable in terms of cost to use waterproof containers for the total number of flexible containers in actual transportation in the future, it is conceivable to selectively use waterproof containers by separating the flexible containers that require them. It is not easy to determine whether a waterproof container should be used from a flexible container with a moisture content.
またフレコン輸送のために防水容器を用いることの欠点を考えてフレコンを防水容器に入れる代わりに輸送手段（トラック）の荷台の構造によってフレコンからの逸水の影響が外部に及ばさない工夫も提案されている。しかし、特に前記集約型の輸送の場合、大型の仮置場を利用できなかった理由として除染地が幹線道路から直ちにアクセスできない立地にあることが多く、そのような場合は標準型の１０トントラックは出入できないので小型の車輪を利用することになるが、このような車にまで前0記防水のための設計をそのまま適用することは実際的ではない。 In addition, considering the disadvantages of using waterproof containers for transporting flexible containers, instead of placing flexible containers in waterproof containers, we also proposed a device that prevents the effects of water leakage from flexible containers from being affected by the structure of the platform of the transportation means (truck). Has been. However, especially in the case of the above-mentioned intensive transportation, the large-scale temporary storage area could not be used because the decontamination site is often inaccessible from the main road. In such cases, the standard 10-ton truck is in and out. Since it is not possible to use small wheels, it is not practical to apply the design for waterproofing as it is to such vehicles.
すでに不具合を生じているフレコンについて、その割合を約１割[１０%]と推定した報告もあるが、その数値自体は確実なものではなく、また１０%が低い値だと断定するされていることもできない。
汚水漏れによる汚染や悪臭も大きな問題となるが、風化によるフレコンの変質で汚染物質が万一外部に散逸するとその影響は深刻な場合があり、フレコンの風化、損傷は実際にはまだ問題を生じていなくてもヒヤリハットとしては相当高いレベルのスコアを考えて予め対処しなくてはならない問題である。
There is a report that estimates that the percentage of flexible containers that have already failed is about 10% [10%], but the figure itself is not certain, and it is determined that 10% is a low value. I can't do that either.
Contamination and bad odor due to leakage of sewage are also a major problem, but if the pollutant is dissipated to the outside due to the deterioration of the flexible container due to weathering, the impact may be serious, and the weathering and damage of the flexible container still cause problems. Even if it is not, it is a problem that must be dealt with in advance as a near-miss, considering a considerably high score.
仮置場から中間貯蔵施設のストックヤードへのフレコンの輸送はすでにパイロット輸送による検証を終え、２８〜２９年度には特定の地域からの実際の輸送も少量ながら実施されている。しかし今後輸送が本格化して輸送量や輸送距離が増大し、また仮置場での保管期間が延びてフレコンの風化のさらなる進行が予想される計画の後半においては、フレコンの破損による放射能漏れおよびそれに対する被曝の危険性が次第に増大するものと考えられ、それに対する解決等を予め用意しておくことが必要となる。 The transportation of flexible containers from the temporary storage site to the stockyard of the intermediate storage facility has already been verified by pilot transportation, and actual transportation from specific areas has been carried out in a small amount in FY28-29. However, in the latter half of the plan, where transportation will become more serious in the future and the amount and distance of transportation will increase, and the storage period at the temporary storage site will be extended and further weathering of the flexible container will be expected. It is considered that the risk of exposure to this will gradually increase, and it is necessary to prepare a solution for this.
本発明の方法においては、筒状の保管用フレコンに収容されて一時的に保管されている放射性廃棄物を中間貯蔵施設に輸送する際に、前記保管用コンテナをこれと対応する形態の筒状の輸送用コンテナの内部に密封して輸送する方法において、前記筒状の輸送用フレコンを形状及び寸法がこれと対応する筒状のフレーム体からなる取付架台にかぶせて上方に開口した正立状態で取り付け、前記保管用コンテナを前記輸送用フレコンの上方開口部から吊下して前記輸送用フレコンの内部に入れ、前記輸送用フレコンの上方開口部を密封して、前記保管用コンテナを前記輸送用フレコン共に中間貯蔵施設に輸送する。 In the method of the present invention, when the radioactive waste stored in the cylindrical storage flexible container and temporarily stored is transported to the intermediate storage facility, the storage container is in a cylindrical shape corresponding to this. In the method of transporting in a sealed state inside the transport container, the tubular transport flexible container is covered with a mounting frame made of a cylindrical frame body corresponding to the shape and dimensions, and the upright state is opened upward The storage container is suspended from the upper opening of the transportation flexible container and is put into the transportation flexible container, the upper opening of the transportation flexible container is sealed, and the storage container is transported by the transportation flexible container. Both flexible containers are transported to an intermediate storage facility.
本発明においては仮置場等で保管用フレコンに収容されて保管されている放射性廃棄物を中間貯蔵施設にいそうする際に、保管フレコンを対応する形態の輸送用フレコンの内部に密封して輸送する。 In the present invention, when radioactive waste stored and stored in a storage flexible container in a temporary storage site or the like is put in an intermediate storage facility, the storage flexible container is sealed and transported inside a corresponding form of transportation flexible container. To do.
ここで保管中の廃棄物の含水分が経時的に増大していて輸送中に外部に流出するような状態にあっても保管用のフレコン自体は輸送用のフレコンの内部に密封されるので輸送用のフレコンが少なくとも輸送中にこの水分を外部に流出させない程度の防水性を有していれば輸送中に外部に水分流出による影響が及ばない。
特に保管用フレコンが風化により変質して破損による放射性物質の流出ガ懸念される場合や吊りベルトの切断によってフレコンの落下の惧れがあるような場合でも輸送中は外側を輸送用フレコンで覆われているので輸送処理の負担は全てこの輸送用フレコンに係るものとなり液もれや放射能もれのおそれはない。
Here, even if the moisture content of the waste during storage increases with time and flows to the outside during transportation, the storage flexible container itself is sealed inside the transportation flexible container. If the flexible container for use has at least a waterproof property that does not allow this moisture to flow outside during transportation, the outside will not be affected by moisture outflow during transportation.
Even if the storage FIBC is deteriorated by weathering and there is a risk of radioactive material spillage due to breakage, or even if there is a risk of the FIBC falling due to the cutting of the suspension belt, the outside is covered with the shipping FIBC during transportation. Therefore, the burden of transportation treatment is all related to this transportation flexible container, and there is no risk of leakage or radioactivity leakage.
本発明においては保管用コンテナを輸送用コンテナの内部に密封する際に、まず輸送用コンテナを取付架台のフレーム体にかぶせてこれを上方に開口した正立状態で取付ける。 In the present invention, when the storage container is sealed in the inside of the shipping container, the shipping container is first placed on the frame body of the mounting base and attached in an upright state opened upward.
保管用コンテナを輸送用コンテナの内部に密封するためには、まず保管用コンテナを輸送用コンテナの収容口の位置に合わせて吊下げることになるが、この作業を容易かつ正確に行うためには筒状の輸送用コンテナが収容口を上向きにして起立していること（正立状態）が必要であるが、本発明では輸送用コンテナを取付架台のフレーム部材にかぶせて取付けるようにしたので、その位置決めが極めて迅速かつ容易となり、作業に遅れが生じたり手間取ったりして位置合わせ中に吊りベルトが切れたり、破損箇所から廃棄物が散逸する惧れはほとんどない。この場合取付架台の筒状のフレーム体は輸送用コンテナと対応する形態にあるので取付は極めて容易に行われる。 In order to seal the storage container inside the shipping container, the storage container must first be suspended according to the position of the shipping container's receiving port. Although it is necessary for the cylindrical shipping container to stand upright with the accommodation port facing upward (upright state), in the present invention, since the shipping container is mounted on the frame member of the mounting base, The positioning becomes extremely quick and easy, and there is almost no possibility that the work is delayed or troublesome, the suspension belt is cut during the alignment, and the waste is dissipated from the damaged part. In this case, since the cylindrical frame body of the mounting base is in a form corresponding to the shipping container, the mounting is extremely easy.
輸送用フレコンの上方開口端部を閉じて保管用フレコンを内部に密封した後ではこれらフレコンは輸送用フレコンに付帯した吊りベルトにより移動させられるので、その作業は極めて円滑かつ確実に行われる。 After the upper opening end of the transportation flexible container is closed and the storage flexible container is sealed inside, these flexible containers are moved by the suspension belt attached to the transportation flexible container, so that the operation is performed extremely smoothly and reliably.
本発明の装置においては、筒状の保管用フレコンに収容されて一時的に保管されている放射性廃棄物を中間貯蔵施設に輸送する際に、前記保管用コンテナを形状および寸法がこれと対応する筒状の輸送用コンテナの内部に収容して輸送する装置において、前記筒状の輸送用フレコンの上方に開口した正立状態の形状及び寸法に対応する形態の筒状のフレーム体からなる取付架台であって、前記取付架台が、前記筒状の輸送用フレコンを前記取付架台にかぶせた際に上記コンテナの上部開口端部をそれに沿って下方に折返して取り付けるようになされた周方向フレーム体と、前記周方向フレーム体に周方向に等間隔で下向きに取付けられた複数の支持フレーム体とを備えた前記取付架台と、上方に開口した正立状態で前記取付架台に取り付けられ、前記保管用フレコンを前記上方開口端部から吊下して内部に収容する形状および寸法を有する前記輸送用フレコンとを備えている。 In the apparatus of the present invention, when the radioactive waste housed in the cylindrical storage flexible container and temporarily stored is transported to an intermediate storage facility, the storage container corresponds to the shape and size thereof. In an apparatus for storing and transporting inside a cylindrical transport container, a mounting base comprising a cylindrical frame body having a shape corresponding to the shape and dimensions of an upright state opened above the cylindrical transport flexible container The mounting frame has a circumferential frame body that is configured to fold down and attach the upper opening end of the container downward when the tubular transportation flexible container is placed on the mounting frame. The mounting frame comprising a plurality of support frame bodies mounted on the circumferential frame body at equal intervals downward in the circumferential direction, and mounted on the mounting frame in an upright state opened upward , And a said shipping FIBC shaped and dimensioned to accommodate the storage for flexible containers internally suspended from the said upper open end.
本発明の装置においては輸送作業に先立って輸送用フレコンを取付けておく取付架台が筒状のフレーム体からなり、このフレーム体は輸送用のフレコンの上方に開口した正立状態に対応する寸法、形状の形態をとっているので、フレコンをフレーム体の上方開口部からフレームの枠内に収容して上方開口部をフレーム枠の上方に対し周方向に沿って取付け上縁部を外側(下方）に折返すことにより容易に取付架台に取付けることができる。 In the apparatus of the present invention, the mounting frame to which the transportation flexible container is attached prior to the transportation work consists of a cylindrical frame body, and this frame body has dimensions corresponding to an upright state opened above the transportation flexible container, Since it is in the form of a shape, the flexible container is accommodated in the frame of the frame from the upper opening of the frame body, and the upper opening is attached along the circumferential direction with respect to the upper side of the frame frame, and the upper edge is outside (downward) It can be easily mounted on the mounting base by folding it back.
この取付状態では輸送用フレコンが上方に開口した正立状態にあるのでトラックのクレーン等により吊下げられる保管用フレコンをその開口部の直上に位置させるだけで保管用のフレコンを収容位置に迅速かつ容易に位置決めし、輸送用フレコンの内部に収容、密封することができる。 In this installed state, the transportation flexible container is in an upright state with an upward opening, so that the storage flexible container can be quickly and quickly moved to the accommodation position simply by positioning the storage flexible container suspended by a truck crane or the like directly above the opening. It can be easily positioned and housed and sealed inside a transport flexible container.
前記取付架台のフレーム体の寸法、形状、したがって保管用フレコンの寸法、形状に対応し、保管用のフレコンとしては標準的な幾つかの形態があるが、一般的に除染で用いられているフレコンは二、三種類であル。これらに対応する前記取付架台のフレーム体の寸法、形状、したがってこれに対応して取付けられる輸送用のフレコンの寸法、形状は夫々の仮置場で用いられている保管用のフレコンの寸法、形状によって変わるが、その標準的なトン袋の形態はそれほど多くないので数種類程度のものを用意しあれば充分に対応できるものと考えられる。 It corresponds to the size and shape of the frame body of the mounting frame, and hence the size and shape of the storage flexible container, and there are several standard forms of storage flexible containers, but they are generally used for decontamination. There are two or three types of flexible containers. The size and shape of the frame body of the mounting base corresponding to these, and accordingly, the size and shape of the transportation flexible container to be installed corresponding to this will depend on the size and shape of the storage flexible container used in each temporary storage site. Although it varies, the standard shape of the ton bag is not so many, so it is considered that it can be sufficiently handled if several types are prepared.
一方放射性廃棄物を収容して保管されていた保管用フレコンは貯蔵の期間、条件によって物理的／科学的な影響を受けて含水分、密度、硬さ等が変動し、場合によっては仮置場（現場保管所)−(積込み所）−中間処理施設の輸送の際に液もれ、放射能もれ、吊りベルト切れなどの事故を生じある場合がある。このようなコンテナの変質（風化）の目安の一つとしてコンテナ中の充填物が固化、膨張して保管用コンテナに膨出部を生じることが挙げられる。 On the other hand, storage flexible containers that have been stored with radioactive wastes are affected by physical / scientific effects depending on the storage period and conditions, and the moisture content, density, hardness, etc. fluctuate. On-site storage)-(loading site)-There may be accidents such as leakage of liquid, leakage of radioactivity, and running out of the hanging belt when transporting to an intermediate treatment facility. One standard for such alteration (weathering) of the container is that the filler in the container is solidified and expanded to form a bulging portion in the storage container.
フレコンに中膨れ／下膨れ状態がみられることがあり、これらの部分は固化して多少の振動を加えても回復しない場合が多い。この膨れの度合は各フレコンによって一定せず輸送用フレコン／フレーム体の使用によって獲られる開口部の通過が困難な場合がある。 In some cases, the flexible container may have a middle swelling / bottom swelling state, and these portions are often solidified and do not recover even when a slight vibration is applied. The degree of swelling is not constant for each flexible container, and it may be difficult to pass through an opening obtained by using a flexible container / frame body for transportation.
このような都度、輸送用フレコンを取り換えることは管理上好ましくなく、このような場合にはフレーム体の頂部の開口状態を規定する環状の周方向フレームとして周方向に拡張可能な弾性体を用いることが考えられる。 In such a case, it is not preferable in terms of management to replace the transportation flexible container. In such a case, an elastic body that can be expanded in the circumferential direction is used as an annular circumferential frame that defines the opening state of the top of the frame body. Can be considered.
本発明においては、前記取付架台のフレーム体の上端部の開口部を形成する周方向のフレーム体が周方向に拡大可能な弾性部材からなる構成およびこの弾性部材として周方向のコイルバを用い、前記周方向に拡大可能な弾性部材からなるフレーム体が周方向の等間隔位置に設けられたパイプ部材に貫装されたコイルバネからなり、前記周方向の各パイプ部材が板バネを介して支持フレーム体に夫々結合された構成をとる。 In the present invention, a structure in which the circumferential frame body forming the opening of the upper end portion of the frame body of the mounting base is made of an elastic member that can be expanded in the circumferential direction, and a circumferential coil bar is used as the elastic member, A frame body made of an elastic member that can be expanded in the circumferential direction is composed of a coil spring penetrating a pipe member provided at an equally spaced position in the circumferential direction, and each pipe member in the circumferential direction is supported by a leaf spring. Are combined with each other.
これによれば、保管用フレコンの膨出部がフレーム体の開口部を通過し難いような場合は、コイルバネを広げることにより開口部の径を大きくして保管用フレコンの円滑な通過を計ることができ、個々の保管用フレコンで異なることのある膨出部の大きさに充分に対応することができる。 According to this, when it is difficult for the bulging part of the storage flexible container to pass through the opening of the frame body, the diameter of the opening is enlarged by widening the coil spring so that the storage flexible container can be smoothly passed. It is possible to cope with the size of the bulging portion which may be different for each storage flexible container.
図１に示す輸送用のフレコン１は通常のフレコンと同様の材質の合成樹脂繊維のシートによってほぼ円筒状の袋体として形成され、その下半部１Ａに仮置場等に保管されている保管用のフレコン３（図４に示す）を収容し、上半部１Ｂの締め紐１Ｃを絞めることによりフレコン１の上方開口部を閉じて保管用のフレコン3を収容した内部を密封するようになされている。 The transport flexible container 1 shown in FIG. 1 is formed as a substantially cylindrical bag body with a synthetic resin fiber sheet made of the same material as a normal flexible container, and is stored in a temporary storage place or the like in its lower half 1A. The flexible container 3 (shown in FIG. 4) is accommodated, and the upper opening portion of the flexible container 1 is closed by tightening the tightening string 1C of the upper half 1B to seal the interior accommodating the flexible container 3 for storage. Yes.
なおフレコン各部の図１に示した寸法は一例であり、図４に示すような保管用のフレコン３を内部に円滑に収容できる寸法、形態であれば任意のものを用いることができる。 The dimensions shown in FIG. 1 of each part of the flexible container are merely examples, and any dimension can be used as long as it can smoothly accommodate the flexible container 3 for storage as shown in FIG.
図２に示すフレーム体２の寸法は一例であり、前記輸送用のフレコン１の内容に容易に収容され、その際に突出する図１の上方部分１Ｂをフレーム体２の上方の環状フレーム体２Ｂに沿って下方に折返えすことにより輸送用フレコン１が上方に開口した安定した位置をとる状態となるような寸法、形態であればよい。 The dimensions of the frame body 2 shown in FIG. 2 are merely examples, and the upper portion 1B of FIG. 1 that is easily accommodated in the contents of the transport flexible container 1 and protrudes at that time is the annular frame body 2B above the frame body 2. It is sufficient that the flexible container 1 for transportation is dimensioned and shaped so as to be in a stable position where the flexible container 1 is opened upward by folding back along the line.
保管用フレコン３に収容されて仮置場に保管されていた放射性廃棄物を中間貯槽施設に輸送する際には、まず図１に示す輸送用のフレコン１を図２に示す取付架台のフレーム体２に収容する。より詳細には、輸送用のフレコン１の下半部若しくは本体部１Ａをフレーム体２の内部に入れ上方に突出する上半部１Ｂをフレーム体２の頂部の同方向フレーム体２Ａに沿って下方に折返し、図３の写真に示すようにフレコン１が内容物を収容するための本来の状態すなわち上方に開口した状態として正立させる。 When transporting the radioactive waste stored in the storage flexible container 3 and temporarily stored in the temporary storage site to the intermediate storage tank facility, first, the transportation flexible container 1 shown in FIG. 1 is attached to the frame 2 of the mounting base shown in FIG. To house. More specifically, the lower half or main body 1A of the flexible container 1 for transportation is placed inside the frame body 2 and the upper half 1B protruding upward is lowered along the same-direction frame body 2A at the top of the frame body 2. As shown in the photograph of FIG. 3, the flexible container 1 is brought upright as the original state for accommodating the contents, that is, the state opened upward.
ここで保管用フレコン３を密封収容するために用いる輸送用フレコン１は中間貯蔵施設で保管用フレコンを輸送する過程で万一保管用フレコン３に漏水や放射能漏れが生じてもそれを外部に散逸させない機能があれば充分であり、この点では少なくとも保管用フレコンと同等の防水及び遮蔽機能があれば充分である。 Here, the transportation flexible container 1 used for hermetically storing the storage flexible container 3 is in the process of transporting the storage flexible container at the intermediate storage facility, even if water leakage or radioactive leakage occurs in the storage flexible container 3 to the outside. A function that does not dissipate is sufficient, and in this respect, at least a waterproof and shielding function equivalent to a storage flexible container is sufficient.
図２は前記保管用フレコン３を輸送用フレコン１の内部に収容する際に、フレコン１を安定した開口状態に維持しておくために用いる取付架台を構成するフレーム体２の説明図である。フレーム体２は内部に輸送用フレコン１をほぼ収容できる寸法にたとえば鉄筋用棒鋼によって形成されている。 FIG. 2 is an explanatory view of the frame body 2 constituting the mounting base used to keep the flexible container 1 in a stable open state when the storage flexible container 3 is accommodated in the transportation flexible container 1. The frame body 2 is formed of, for example, steel bars for reinforcing bars so as to be able to accommodate the transportation flexible container 1 therein.
輸送用フレコン１をフレーム体２に取付ける際には、前記図２に示したフレーム体２の内周面に沿って図１に示す輸送用フレコン１を入れ、その上半部１Ｂをフレコン１の頂部の環状フレーム部材２Ａに沿って下方に折返して取り付ける（図３）。 When the transport flexible container 1 is attached to the frame body 2, the transport flexible container 1 shown in FIG. 1 is placed along the inner peripheral surface of the frame body 2 shown in FIG. Attached by folding downward along the top annular frame member 2A (FIG. 3).
放射性廃棄物を収容して仮置場に保管されている保管用フレコン３は図４に示すようにこの状態で上方からクレーン（図示せず）のフック４によって輸送用フレコン１の開口部の上方に吊下げられる。開口部はフレコン１の上半部１Ｂをフレーム体２の上縁部に沿って下方に折返した状態として維持されている。 As shown in FIG. 4, the storage flexible container 3 containing radioactive waste and stored in the temporary storage area is placed above the opening of the transportation flexible container 1 by the hook 4 of a crane (not shown) from above in this state. Can be hung. The opening is maintained as a state in which the upper half 1B of the flexible container 1 is folded downward along the upper edge of the frame body 2.
保管用フレコン３は吊りベルトを図４に示すトラック側のクレーンのフック４に係合させて輸送用フレコン１の開口部の直上の位置まで水平に移動させて位置決めし、ついでクレーンを降下させてフレコン３を開口部に吊下す。このとき開口部の位置が確定していないとクレーンの運転動作が煩雑になって修正や再操作に手間どり、保管用フレコン３に衝撃や力が加わる機会が増大し、フレコンが長年の貯蔵で劣化しているときは破損は落下の事故の惧れが大きくなり、作業者や周辺の環境に悪影響を及ぼす。 The storage flexible container 3 is positioned by engaging the suspension belt with the hook 4 of the crane on the truck side shown in FIG. 4 and moving it horizontally to a position directly above the opening of the transportation flexible container 1, and then lowering the crane. The flexible container 3 is suspended from the opening. At this time, if the position of the opening is not fixed, the operation of the crane becomes complicated, making it difficult to correct and re-operate, increasing the chances of impact and force being applied to the storage flexible container 3, and the flexible container can be stored for many years. When it is deteriorated, there is a greater risk of a fall accident, which will adversely affect the operator and the surrounding environment.
この実施態様では、新しい輸送用フレコン１を予め用意してこれを取付架台のフレーム体２に上方開口状態で取付けておくことにより、保管用フレコン３の輸送用フレコン１に対する収納操作を迅速かつ安全におこなうことができる。 In this embodiment, a new transportation flexible container 1 is prepared in advance and is attached to the frame 2 of the mounting base in an upwardly opened state, whereby the storage flexible container 3 can be quickly and safely stored in the transportation flexible container 1. Can be done.
輸送用フレコン１は通常のフレコンと同程度のものをフレコンメーカーから入手可能なのでそのためのコストは合理的な範囲となり、また取付用架台も入手容易な通常の材料から構成することできかつ架台は現在フレコンとして用いられているものの寸法や形状を考慮して二、三種類程度用意すればほとんどの場合に対応することできる。 Since the transportation FIBC 1 can be obtained from the FIBC manufacturer as much as the normal FIBC, the cost for that is reasonable, and the mounting base can be made of ordinary materials that are easily available. In consideration of the size and shape of the flexible container, it is possible to cope with almost all cases by preparing about two or three types.
なお図３に示すように輸送用フレコン１の開口部に位置合わせをして保管用フレコン３を収容した後(下方のフレコン１の本体部１Ａに収容した後）、図１に示す上方部１Ｂを再度折上げて図１のひも１Ｃを絞って開口部を閉じると、この後の輸送は全て外側のフレコン１が保管用のフレコン３を内部に密封した状態で吊りベルト１Ｄにより行われるので中間所蔵施設までの輸送には何等不具合いを生じることはない。 As shown in FIG. 3, after the storage flexible container 3 is accommodated after being aligned with the opening of the transportation flexible container 1 (after being accommodated in the main body 1A of the flexible container 1 below), the upper part 1B shown in FIG. 1 and squeezing the string 1C in FIG. 1 to close the opening, all subsequent transport is performed by the hanging belt 1D with the outer flexible container 1 sealed with the storage flexible container 3 inside. There will be no problems with transportation to the holding facility.
尚、取付架台のフレーム体の頂部の環状フレーム体２Ａは一般的なフレコンの寸法よりもやや大き目に設定してあるが、保管用フレコンが長年貯蔵されていると内容物の化学反応による変化等による変質が生じて回復不能な膨張、変形を生じる場合があり、これが一定の範囲を超えると膨張部が開口部を通過し難くなる。 The annular frame body 2A at the top of the frame body of the mounting base is set to be slightly larger than the size of a general flexible container. However, if the flexible container for storage is stored for many years, the change due to the chemical reaction of the contents, etc. May cause unrecoverable expansion and deformation, and if this exceeds a certain range, the expansion section will hardly pass through the opening.
図５ではこのような場合に対応して取付架台のフレーム体の頂部の開口部に相当する環状部分を周方向に拡張可能な弾性部材（たとえばコイルバネ５）によって形成している。コイルバネ５は環状体の周方向の等間隔位置の複数個所でパイプ状部材６に貫装されるようにし、このパイプ状部材６を夫々板バネ７を介してたて方向の支持フレーム体２Ａに連結してある。 In FIG. 5, corresponding to such a case, an annular portion corresponding to the opening at the top of the frame of the mounting base is formed by an elastic member (for example, a coil spring 5) that can be expanded in the circumferential direction. The coil springs 5 are inserted into the pipe-shaped member 6 at a plurality of positions at equal intervals in the circumferential direction of the annular body, and the pipe-shaped members 6 are respectively attached to the support frame body 2A in the vertical direction via the leaf springs 7. It is connected.
この例ではたとえば保管用フレコン３が貯蔵中の変質によって下方部が膨出し輸送用フレコン１の頂部の環状フレーム体２Ａによる上方開口部を通過し難くなっている場合。コイルバネ５を周方向に拡大させる。これによって環状開口部のフレーム体が拡大すると共に連結されている４本の板バネ７もラッパ状に弾性湾曲して保管用のフレコン３の膨出部分の円滑な通過を許容する。 In this example, for example, when the storage flexible container 3 is deteriorated during storage, the lower part is swollen and it is difficult to pass through the upper opening portion of the annular frame body 2A at the top of the transportation flexible container 1. The coil spring 5 is expanded in the circumferential direction. As a result, the frame body of the annular opening expands and the four leaf springs 7 connected to each other elastically bend in a trumpet shape to allow smooth passage of the bulging portion of the storage flexible container 3.
この場合、保管用フレコン３の外径に多少の変動があっても輸送用フレコン１を取付けた架台のフレーム体２Ａの弾性拡張によってこれを吸収することができるので多少の変形であればフレーム体２Ａの寸法を変更せずに対応できるので、多種類の架台を用意しなくても良いことになる。 In this case, even if there is some variation in the outer diameter of the storage flexible container 3, it can be absorbed by the elastic expansion of the frame body 2A of the gantry to which the transportation flexible container 1 is attached. Since it can respond without changing the dimension of 2A, it is not necessary to prepare many kinds of mounts.
また積込み／積下しや輸送作業は全て輸送対象とする保管用のフレコン３を新しい輸送用のフレコン１の内部に密封した状態で行われるので作業員は輸送用の外部への放射能を漏洩事故に対する懸念なく安全かつ安心した状態で作業を進めることができる。 In addition, loading / unloading and transportation operations are carried out with the storage flexible container 3 to be transported sealed inside the new transportation flexible container 1, so that workers leak radiation to the outside for transportation. Work can be carried out in a safe and secure state without concern for accidents.
本発明によれば放射性廃棄物の処理の一環としての仮置場から中間貯蔵施設へのフレコンの輸送を外部への液もれや放射能被曝の惧れがなく安全かつ容易に行うことができる。 According to the present invention, the transportation of the flexible container from the temporary storage site to the intermediate storage facility as part of the processing of the radioactive waste can be performed safely and easily without any risk of liquid leakage or radiation exposure to the outside.
１： 輸送用のフレコン
１Ａ: 下半部（本体部）
１Ｂ: 上半部
１Ｃ: 締め紐
１Ｄ: 吊りベルト
２：フレーム体
２Ａ： フレーム体
３： 保管用フレコン
４： フック
５： コイルバネ
６： パイプ
７： 板バネ
８： フレーム体
1: Flexible container 1A for transportation: Lower half (main part)
1B: Upper half 1C: Fastening strap 1D: Suspension belt 2: Frame body 2A: Frame body 3: Storage flexible container 4: Hook 5: Coil spring 6: Pipe 7: Leaf spring 8: Frame body
Claims (4)
前記筒状の輸送用フレコンを形状及び寸法がこれと対応する筒状のフレーム体からなる取付架台にかぶせて上方に開口した正立状態で取り付け、
前記保管用コンテナを前記輸送用フレコンの上方開口部から吊下して前記輸送用フレコンの内部に入れ、
前記輸送用フレコンの上方開口部を密封して、前記保管用コンテナを前記輸送用フレコン共に中間貯蔵施設に輸送する方法。 When transporting radioactive waste stored in a cylindrical storage flexible container temporarily to an intermediate storage facility, the storage container is placed inside the corresponding cylindrical transport container. In the method of sealing and transporting,
Attach the tubular transportation flexible container in an upright state with the shape and dimensions of the tubular flexible container covering the mounting frame made of a tubular frame body corresponding to the tubular flexible body.
The storage container is hung from the upper opening of the transportation flexible container and put inside the transportation flexible container,
A method of sealing an upper opening of the transportation flexible container and transporting the storage container together with the transportation flexible container to an intermediate storage facility.
前記筒状の輸送用フレコンの上方に開口した正立状態の形状及び寸法に対応する形態の筒状のフレーム体からなる取付架台であって、前記取付架台が、前記筒状の輸送用フレコンを前記取付架台にかぶせた際に上記コンテナの上部開口端部をそれに沿って下方に折返して取り付けるようになされた周方向フレーム体と、
前記周方向フレーム体に周方向に等間隔で下向きに取付けられた複数の支持フレーム体とを備えた前記取付架台と、
上方に開口した正立状態で前記取付架台に取り付けられ、
前記保管用フレコンを前記上方開口端部から吊下して内部に収容する形状および寸法を有する前記輸送用フレコンとを備えた前記保管用フレコンを中間処理施設に輸送する装置。 When transporting radioactive waste contained in a cylindrical storage flexible container and temporarily stored to an intermediate storage facility, the storage container has a shape and size corresponding to that of the cylindrical transport container. In equipment that is housed and transported inside,
A mounting frame comprising a cylindrical frame body having a shape corresponding to the shape and dimensions of the upright state opened above the cylindrical transportation flexible container, wherein the mounting frame is configured to replace the cylindrical transportation flexible container. A circumferential frame body adapted to fold and attach the upper opening end of the container downward along the container when it is placed on the mounting frame;
The mounting frame comprising a plurality of support frame bodies attached to the circumferential frame body at regular intervals in the circumferential direction; and
Attached to the mounting base in an upright state opened upward,
An apparatus for transporting the storage flexible container to the intermediate treatment facility, comprising the transportation flexible container having a shape and a size for suspending the storage flexible container from the upper opening end and accommodating the same.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017152788 | 2017-08-07 | ||
| JP2017152788 | 2017-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2018148951A Pending JP2019032323A (en) | 2017-08-07 | 2018-08-07 | Transport method of contaminated soil accommodated in flexible container and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599503A (en) * | 2020-05-29 | 2020-08-28 | 中国人民解放军63653部队 | Flexible packaging container for extremely-low radioactive contaminated soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4901959A (en) * | 1988-07-26 | 1990-02-20 | Stage Jack W | Collapsible support stand for flexible trash bag |
| JP3178680U (en) * | 2012-07-13 | 2012-09-27 | 日豊製袋工業株式会社 | Self-supporting auxiliary frame for flexible container bags |
| JP6110979B1 (en) * | 2016-04-15 | 2017-04-05 | 株式会社日立パワーソリューションズ | Suspended carrying device and carrying method |
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2018
- 2018-08-07 JP JP2018148951A patent/JP2019032323A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4901959A (en) * | 1988-07-26 | 1990-02-20 | Stage Jack W | Collapsible support stand for flexible trash bag |
| JP3178680U (en) * | 2012-07-13 | 2012-09-27 | 日豊製袋工業株式会社 | Self-supporting auxiliary frame for flexible container bags |
| JP6110979B1 (en) * | 2016-04-15 | 2017-04-05 | 株式会社日立パワーソリューションズ | Suspended carrying device and carrying method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599503A (en) * | 2020-05-29 | 2020-08-28 | 中国人民解放军63653部队 | Flexible packaging container for extremely-low radioactive contaminated soil |
| CN111599503B (en) * | 2020-05-29 | 2022-05-31 | 中国人民解放军63653部队 | Flexible packaging container for extremely-low radioactive contaminated soil |
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