JPH0192696A - Method for cutting and disassembling cylindrical structure - Google Patents
Method for cutting and disassembling cylindrical structureInfo
- Publication number
- JPH0192696A JPH0192696A JP24998687A JP24998687A JPH0192696A JP H0192696 A JPH0192696 A JP H0192696A JP 24998687 A JP24998687 A JP 24998687A JP 24998687 A JP24998687 A JP 24998687A JP H0192696 A JPH0192696 A JP H0192696A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- rsw
- cut
- abrasive jet
- crane
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 239000002002 slurry Substances 0.000 abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000009835 boiling Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000006148 magnetic separator Substances 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000012857 radioactive material Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、例えば沸騰水型（ＢＷＲ型）原子力発電所の
熱遮蔽壁（Ｒ３Ｗ）など円筒状構造物の切削解体工法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for cutting and dismantling a cylindrical structure such as a heat shield wall (R3W) of a boiling water type (BWR type) nuclear power plant.
［技術的背景と従来技術］
かかるコンクリート構造物の解体が一般構造物の解体と
大きく異なる点は、放射化（新放射性物質に変化するこ
と）されていること、放射化された物質で汚染されてい
ること、および全体的に鉄筋量の多いアラシブなコンク
リート構造物が多いことである。[Technical Background and Prior Art] The major difference between the demolition of such concrete structures and the demolition of general structures is that they are radioactive (changed into new radioactive materials) and that they are not contaminated with radioactive materials. The main reason for this is that there are many concrete structures with a large amount of reinforcing steel.
このため、放射化された部分については、作業者が接近
できないので遠隔操作による解体処理および放射化され
た解体片や粉塵の飛散防止が必要となる。For this reason, since workers cannot approach the activated parts, it is necessary to dismantle them by remote control and prevent the activated dismantled pieces and dust from scattering.
［発明の目的］
従って本発明の目的は、鉄筋コンクリート製の円筒状構
造物をブロック状に切削、撤去する構造物の切削解体工
法を提供するにある。[Object of the Invention] Therefore, an object of the present invention is to provide a structure cutting and demolition method for cutting and removing a cylindrical reinforced concrete structure into blocks.
［発明の構成］
本発明によれば、円筒状構造物を外壁側から切削解体す
る工法において、遠隔操作でアブレイシブジェットによ
り該構造物を上方から下方に向けて順次軸線方向および
円周方向に切削して所定寸法の小ブロックに切断し、切
断したブロックを搬出するようにしている。[Structure of the Invention] According to the present invention, in a method of cutting and dismantling a cylindrical structure from the outer wall side, the structure is sequentially axially and circumferentially moved from above to below using an abrasive jet under remote control. It is cut into small blocks of predetermined dimensions, and the cut blocks are transported out.
［発明の作用効果］
従って、例えばＢＷＲ型原子力発電所の熱遮蔽壁を解体
するに際し、遠隔操作により上方から下方に向けて所定
寸法に切削して小ブロックに切断し、切断した小ブロッ
クを搬出して人体に危険を及ぼすことなく安全に解体撤
去することができる。[Operations and Effects of the Invention] Therefore, for example, when dismantling the heat shielding wall of a BWR type nuclear power plant, it is possible to cut it into small blocks by cutting from the top to the bottom to a predetermined size by remote control, and then transport the cut small blocks. can be dismantled and removed safely without posing any danger to humans.
［好ましい実施の態様］
本発明の実施に際し、スラリーおよび排気の処理装置を
用いるのが好ましい。このようにすると、例えば放射化
された解体片や粉塵の飛散を防止することができる。[Preferred Embodiment] In practicing the present invention, it is preferable to use a slurry and exhaust treatment device. In this way, for example, it is possible to prevent radioactive dismantled pieces and dust from scattering.
［実施例コ 以下図面を参照して本発明の詳細な説明する。[Example code] The present invention will be described in detail below with reference to the drawings.
第１図は本発明の切削解体方法を例えばＢＷＲ型原子力
発電所の熱遮蔽壁（以下Ｒ８Ｗという）１に適用する場
合を示している。FIG. 1 shows a case where the cutting and dismantling method of the present invention is applied to, for example, a heat shield wall (hereinafter referred to as R8W) 1 of a BWR type nuclear power plant.
図において、ＢＳＷＩは直径的１０ｍ、高さ約１５ｍ、
厚さ約６０■の円筒形で、厚さ約３０〜４５■の厚内鋼
板による内外表面シェルおよびシェル間仕切板で構成さ
れた鋼構造物にコンクリートまたはモルタルを充填した
もので、生体遮蔽壁（ＢＳＷ）２に覆われた原子炉格納
容器（ＰＣＶ）３内に収納されている。In the figure, BSWI is 10 m in diameter and approximately 15 m in height.
It is a cylindrical steel structure with a thickness of about 60 cm, consisting of inner and outer shells made of thick steel plates with a thickness of about 30 to 45 cm, and shell partition plates, and filled with concrete or mortar. It is housed in a reactor containment vessel (PCV) 3 covered by a nuclear reactor containment vessel (PCV) 2.
本発明を実施するアブレイシブジェットによる切削解体
装置は、ＢＳＷＩの切断部にセットする切削装置１０と
、アブレイシブジェット装置２０と、スラリー処理装置
３０と、排気処理装置４０とからなり、揚重処理装置と
しては建屋４内の既設のクレーン５および５１が用いら
れている。The abrasive jet cutting and dismantling device according to the present invention includes a cutting device 10 set in the cutting section of the BSWI, an abrasive jet device 20, a slurry treatment device 30, and an exhaust treatment device 40. Existing cranes 5 and 51 in the building 4 are used as heavy processing equipment.
第２図および第３図において、切削装置１０は、ＢＳＷ
Ｉをまたぎ、押付はジヤツキ１１により固定される下向
きコ字状で下端から円筒一方向（図示の例では右方）に
延長部１２ａが突設されたガイドフレーム１２と、ガイ
ドフレーム１２の昇降ガイドレール１３に昇降ローラ１
４を介してガイドされ、昇降ラック１５ａに噛み合う昇
降ピニオンギヤのモータ１６により昇降され、延長部１
２ａに設けられた横行ラック１５ｂに噛み合う横行ピニ
オンギヤのモータ１７により横行される防音・漏水カバ
ー１８と、カバー１８にＢＳＷＩの中心に向けて設けら
れたジェットノズル１９とからなっている。In FIGS. 2 and 3, the cutting device 10 includes a BSW
A guide frame 12 having a downward U-shape, which is fixed by a jack 11 and has an extension 12a protruding from the lower end in one direction of the cylinder (to the right in the illustrated example), and a lifting guide for the guide frame 12. Elevating roller 1 on rail 13
4 and is lifted and lowered by a lifting pinion gear motor 16 that meshes with the lifting rack 15a.
It consists of a soundproof/water leakage cover 18 that is traversed by a motor 17 of a traverse pinion gear that meshes with a traverse rack 15b provided at 2a, and a jet nozzle 19 that is provided on the cover 18 toward the center of the BSWI.
第１図において、アブレイシブジェット装置２Ｏは、超
高圧ポンプ２１と、研磨材タンク２３と、監視制御盤２
５とからなっている。超高圧ポンプ２１は図示しない供
給水源に接続され、高圧水管２２を介してジェットノズ
ル１９に接続され、研磨材タンク２３は研磨材管２４を
介してジェットノズル１９に接続されている。なお監視
Ｉ（Ｊ押盤２５はアブレイシブジェット装置２０を含み
、切削解体装置全体をわ遠隔操作により制御するように
なっている。In FIG. 1, the abrasive jet device 2O includes an ultra-high pressure pump 21, an abrasive tank 23, and a monitoring control panel 2.
It consists of 5. The ultra-high pressure pump 21 is connected to a supply water source (not shown) and to the jet nozzle 19 via a high-pressure water pipe 22 , and the abrasive tank 23 is connected to the jet nozzle 19 via an abrasive pipe 24 . The monitoring I (J press board 25) includes an abrasive jet device 20, and the entire cutting and dismantling device is controlled by remote control.
スラリー処理装置３０は、ＢＳＷＩの底部に設けられた
スラリー受槽３０ａと、槽３０ａとＰＣＶ３の底部に設
けられた水中ポンプ３１ａとにスラリー排出管３１を介
して接続されたポンプ３２と、ポンプ３２の下流側に設
けられな磁選機３３と、磁選ｆｉ３３で分離された研磨
材を受ける研磨材受け３４と、磁選機３３からの水を受
ける原水槽３５と、原水ポンプ３６、原水管３６ａを介
して原水槽３５に接続された凝集反応槽３７と、凝集反
応槽３７の下流側に設けられた沈澱槽３８と、沈澱！３
８で分離されたスラッジを受けるスラリジ受け３８ａと
、沈澱槽３８からの水を受ける処理水槽３９とからなっ
ている。なお、図中符号３１ｂは吊り上げたスラリー受
槽３０ａ用のスラリー排出管である。The slurry processing device 30 includes a slurry receiving tank 30a provided at the bottom of the BSWI, a pump 32 connected to the tank 30a and a submersible pump 31a provided at the bottom of the PCV 3 via a slurry discharge pipe 31, and a pump 32. A magnetic separator 33 provided on the downstream side, an abrasive receiver 34 that receives the abrasive separated by the magnetic separator 33, a raw water tank 35 that receives water from the magnetic separator 33, a raw water pump 36, and a raw water pipe 36a A flocculation reaction tank 37 connected to the raw water tank 35, a sedimentation tank 38 provided downstream of the flocculation reaction tank 37, and a sedimentation! 3
It consists of a sludge receiver 38a that receives the sludge separated in step 8, and a treated water tank 39 that receives water from the settling tank 38. In addition, the code|symbol 31b in the figure is a slurry discharge pipe for the suspended slurry receiving tank 30a.
排気処理装置４０は、ＢＳＷＩの上端開口部を覆う＃ｌ
製蓋４１に排気管４２を介して接続された冷却用熱交換
器４３と、熱交換器４３の下流側に順に設けられたミス
トエリミネータ４４、電気ヒータ式加熱器４５、フィル
タ４６およびターボブロア４７からなり、熱交換器４３
とミストエリミネータ４４とは配管４８を介してスラリ
ー処理装置３０のスラリー排出管３１に接続され、ター
ボブロア４７は図示しない既設の排気処理設備に接続さ
れている。The exhaust treatment device 40 covers the upper end opening of the BSWI.
From a cooling heat exchanger 43 connected to the lid 41 via an exhaust pipe 42, a mist eliminator 44, an electric heater 45, a filter 46, and a turbo blower 47 provided in this order on the downstream side of the heat exchanger 43. , heat exchanger 43
and the mist eliminator 44 are connected to the slurry discharge pipe 31 of the slurry treatment device 30 via a pipe 48, and the turbo blower 47 is connected to an existing exhaust treatment facility (not shown).
次に本発明の実施の態様を説明する。Next, embodiments of the present invention will be described.
先ず、クレーン５でワイヤ６により切削装置１０を吊り
、ガイドフレーム１２がＢＳＷＩをまたぐように下ろし
、押付はジヤツキ１１を伸長してＢＳＷＩに固定し、ワ
イヤ６を外して鋼製蓋４１をセットする。First, the cutting device 10 is suspended by the wire 6 using the crane 5, and lowered so that the guide frame 12 straddles the BSWI.For pressing, the jack 11 is extended and fixed to the BSWI, the wire 6 is removed, and the steel lid 41 is set. .
次いで、アブレイシブジェット装置２０、スラリー処理
装置３０および排気処理装置４０を稼動し、昇降ピニオ
ンギヤのモータ１６を駆動しノズル１９を例えば２．９
８ｍ下降させ、横行ピニオンギヤのモータ１７を駆動し
ノズル１つを例えば１．４８ｍ横行させアブレイシブジ
ェットによりＲ８ＷＩをＬ字状に切削する。この際、ス
ラリーはＲ３ＷＩ内方底部のスラリー受槽３０ａに集め
られ、ＲＳＷＩ外方に洩れたスラリーはＰＣＶ３底部の
水中ポンプ３１ａを介してスラリー処理装置３０で処理
され、粉塵、ガスは排気処理装置４０で処理される。な
お、受槽３０ａは適時クレーン５で吊り上げ、スラリー
排出管３１ｂにスラリーを排出する。Next, the abrasive jet device 20, the slurry treatment device 30, and the exhaust treatment device 40 are operated, and the motor 16 of the lifting pinion gear is driven to control the nozzle 19 at a speed of, for example, 2.9 mm.
The R8WI is lowered by 8 m, the motor 17 of the traverse pinion gear is driven, and one nozzle is traversed by 1.48 m, for example, to cut R8WI into an L-shape using an abrasive jet. At this time, the slurry is collected in the slurry receiving tank 30a at the inner bottom of the R3WI, the slurry leaking to the outside of the RSWI is treated by the slurry treatment device 30 via the submersible pump 31a at the bottom of the PCV3, and dust and gas are collected by the exhaust treatment device 40. will be processed. Note that the receiving tank 30a is lifted up by the crane 5 at appropriate times and the slurry is discharged into the slurry discharge pipe 31b.
次いで、前記と同様にしてガイドフレーム１２を円周方
向右方に例えば１．４８ｍ移動して先に切断したＬ字状
の部分の右寄りの部分に固定し、Ｒ３ＷＩをＬ字形に切
断して例えば１．４８ｍ角で長さ２．９ｍの小ブロック
ＩＡに切断する。Next, in the same manner as described above, the guide frame 12 is moved to the right in the circumferential direction by, for example, 1.48 m and fixed to the right side of the previously cut L-shaped part, and R3WI is cut into an L-shape, for example. Cut into small blocks IA of 1.48 m square and 2.9 m long.
次いで、クレーン５で小ブロックＩＡを吊り上げ（第４
図）、建屋４に搬出し、クレーン５１で吊り直しく第５
図）、コンテナ５２に収納する（第６図）。Next, crane 5 lifts small block IA (fourth
Figure 5) is carried out to Building 4 and re-lifted by crane 51.
(Fig. 6) and stored in a container 52 (Fig. 6).
［まとめ］
以上説明したように本発明によれば、遠隔操作によりＲ
８Ｗ等の構造物を上方から下方に向けて所定寸法の小ブ
ロックに切断し、コンテナに収納するので、人体に危険
を及ぼすことなく安全に解体処理を行うことができる。[Summary] As explained above, according to the present invention, R
Since a structure such as 8W is cut into small blocks of a predetermined size from the top to the bottom and stored in a container, the dismantling process can be carried out safely without posing any danger to the human body.
第１図は本発明を実施する装置の全体構成図、第２図は
切削装置を示す斜視図、第３図は第２図の半径方向断面
図、第４図、第５図および第６図はそれぞれ小ブロック
の搬出工程を示す斜視図である。
１・・・熱遮蔽壁（Ｒ３Ｗ） ＩＡ・・・小ブロッ
ク １０・・・切削装置 １８・・・防音・漏水カ
バー １９・・・ジェットノズル２０・・・アブレイ
シブジェット装Ｗ３０・・・スラリー処理装置 ４０
・・・排気処理装置
第５図
第４図FIG. 1 is an overall configuration diagram of an apparatus for implementing the present invention, FIG. 2 is a perspective view showing a cutting device, FIG. 3 is a radial cross-sectional view of FIG. 2, and FIGS. 4, 5, and 6. 2A and 2B are perspective views showing the process of carrying out small blocks, respectively. 1...Heat shielding wall (R3W) IA...Small block 10...Cutting device 18...Soundproof/water leakage cover 19...Jet nozzle 20...Abrasive jet equipment W30...Slurry Processing device 40
...Exhaust treatment equipment Fig. 5 Fig. 4
Claims (1)
遠隔操作でアブレイシブジェットにより該構造物を上方
から下方に向けて順次軸線方向および円周方向に切削し
て所定寸法の小ブロックに切断し、切断したブロックを
搬出することを特徴とする円筒状構造物の切削解体工法
。In the method of cutting and dismantling a cylindrical structure from the outer wall side,
A cylinder characterized by cutting the structure into small blocks of predetermined dimensions by sequentially cutting the structure from above to below in the axial direction and circumferential direction using an abrasive jet under remote control, and transporting the cut blocks. Cutting and demolition method for shaped structures.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62249986A JPH07111477B2 (en) | 1987-10-05 | 1987-10-05 | Cutting and demolition equipment for cylindrical structures |
| US07/401,843 US5001870A (en) | 1987-10-05 | 1989-09-01 | Method of cutting and disassembling cylindrical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62249986A JPH07111477B2 (en) | 1987-10-05 | 1987-10-05 | Cutting and demolition equipment for cylindrical structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0192696A true JPH0192696A (en) | 1989-04-11 |
| JPH07111477B2 JPH07111477B2 (en) | 1995-11-29 |
Family
ID=17201130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62249986A Expired - Fee Related JPH07111477B2 (en) | 1987-10-05 | 1987-10-05 | Cutting and demolition equipment for cylindrical structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07111477B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2664083A1 (en) * | 1990-06-27 | 1992-01-03 | Framatome Sa | Method and device for dismantling an irradiated component of a nuclear reactor by cutting up its wall |
| FR2668848A2 (en) * | 1990-11-07 | 1992-05-07 | Framatome Sa | Method and device for dismantling an irradiated component of nuclear reactor by cutting its wall |
| JP2012031629A (en) * | 2010-07-30 | 2012-02-16 | Japan Atom Power Co Ltd:The | Cutting apparatus and cutting and demolition method for wall structure |
| JP2015004239A (en) * | 2013-06-21 | 2015-01-08 | 株式会社竹中工務店 | Holding cutting apparatus and holding cutting method |
| JP2015031621A (en) * | 2013-08-05 | 2015-02-16 | 日立Ｇｅニュークリア・エナジー株式会社 | Apparatus and method for removing top lid of reactor pressure vessel |
| EP2690631A3 (en) * | 2012-07-27 | 2015-04-29 | AREVA GmbH | Installation for the treatment of a mixture of water and solid material from water abrasive jet cutting in a nuclear facility |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044898A (en) * | 1983-08-23 | 1985-03-11 | 株式会社熊谷組 | Dismantling system of concrete heat shield wall |
-
1987
- 1987-10-05 JP JP62249986A patent/JPH07111477B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044898A (en) * | 1983-08-23 | 1985-03-11 | 株式会社熊谷組 | Dismantling system of concrete heat shield wall |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2664083A1 (en) * | 1990-06-27 | 1992-01-03 | Framatome Sa | Method and device for dismantling an irradiated component of a nuclear reactor by cutting up its wall |
| FR2668848A2 (en) * | 1990-11-07 | 1992-05-07 | Framatome Sa | Method and device for dismantling an irradiated component of nuclear reactor by cutting its wall |
| JP2012031629A (en) * | 2010-07-30 | 2012-02-16 | Japan Atom Power Co Ltd:The | Cutting apparatus and cutting and demolition method for wall structure |
| EP2690631A3 (en) * | 2012-07-27 | 2015-04-29 | AREVA GmbH | Installation for the treatment of a mixture of water and solid material from water abrasive jet cutting in a nuclear facility |
| JP2015004239A (en) * | 2013-06-21 | 2015-01-08 | 株式会社竹中工務店 | Holding cutting apparatus and holding cutting method |
| JP2015031621A (en) * | 2013-08-05 | 2015-02-16 | 日立Ｇｅニュークリア・エナジー株式会社 | Apparatus and method for removing top lid of reactor pressure vessel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07111477B2 (en) | 1995-11-29 |
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