EP0864162B1 - Installation de demantelement a distance de structures irradiees - Google Patents

Installation de demantelement a distance de structures irradiees Download PDF

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Publication number
EP0864162B1
EP0864162B1 EP96941072A EP96941072A EP0864162B1 EP 0864162 B1 EP0864162 B1 EP 0864162B1 EP 96941072 A EP96941072 A EP 96941072A EP 96941072 A EP96941072 A EP 96941072A EP 0864162 B1 EP0864162 B1 EP 0864162B1
Authority
EP
European Patent Office
Prior art keywords
installation
remote
structures according
dismantling
irradiated structures
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.)
Expired - Lifetime
Application number
EP96941072A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0864162A1 (fr
Inventor
François Bodin
Georges Lebiez
Franck Vivier
Ludovic Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orano Demantelement SAS
Original Assignee
Compagnie Generale des Matieres Nucleaires SA
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Application filed by Compagnie Generale des Matieres Nucleaires SA filed Critical Compagnie Generale des Matieres Nucleaires SA
Publication of EP0864162A1 publication Critical patent/EP0864162A1/fr
Application granted granted Critical
Publication of EP0864162B1 publication Critical patent/EP0864162B1/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
    • B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/34—Disposal of solid waste

Definitions

  • the subject of the invention is an installation of remote dismantling of irradiated structures.
  • the invention therefore essentially rests on the ideas to make the liquid jet projection tool more mobile abrasive and add to the installation of means of measuring and reducing contamination of structures to be cut.
  • Another aspect of the invention is the possibility guarantee proper operation by ensuring that the cutting is done properly; we can then add at installation, in addition to cameras or means remote observation, a probe or other detector of the structure in order to recognize its position or shape and adjust the trajectory of the cutting tool, even if we can have starting information provided by a plan or some other way.
  • the invention relates to a installation for dismantling irradiated structures comprising a support for the structure, a support module of a cutting head belonging to a projection of pressurized water and abrasive particles, characterized in that the module is movable in front of the structure and orientable, and in that it carries a distance from the structure, a dosimeter and a device decontamination.
  • FIG. 1 Demineralized water used as a cutting agent arrives from the distribution network of the plant to which the installation belongs by a piping 1, on which a motor pump can be found 2, then a battery of filters 3, before a pressure amplifier 6 which brings the water to 4000 bars.
  • the piping 1 is extended by a high pipe pressure 5 at the output of the pressure amplifier 6, which is successively composed of a collector 7 carrier a pressure verification pressure gauge 8 and a seal turning 9, then a pipe 11 provided with a valve 12.
  • the purpose of the rotating joint 9 is to allow movement the piping 11 relative to the manifold 7 for the reasons that we will soon see; piping 11, one of which end is in the open as the elements of the installation whose description precedes, then plunges in an excavation, the bottom of which forms a swimming pool 10 where the cutting takes place.
  • the swimming pool 10 is filled with water for added safety, but this is not essential if other precautions are taken to protect the exterior from contamination; a reworked installation to operate out of water will moreover described below.
  • the wall of the excavation carries two pairs of arms 13 vertical support between which a gateway 15 horizontal is thrown away.
  • a carriage 17 is movable along the bridge 15, the upper face of which forms slides extending in a direction denoted Y, and it is surmounted by a turret 81 intended to support an arm telescopic 16 vertical which extends through it.
  • the turret 81 allows the telescopic arm 16 to slide following the vertical direction Z and turning around this direction Z on a complete circle.
  • the arm telescopic 16 extends below the gangway 15, and ends with a wrist 18 immersed in the water of the pool 10.
  • the arms are movable in a direction X horizontal and perpendicular to the Y direction by sliding on rails 14 formed on the wall of the excavation.
  • the piping 11 is in fact composed of two rigid sections 82 and 83 respectively secured to the bridge 15 and of the telescopic arm 16, and which are connected by a second rotary joint 84, which is like the previous 9 a section flexible piping able to deform according to installation movements.
  • the first rigid section 82 is the one that leads to the first rotating joint 9, and the second ends with flexible piping 20.
  • nozzle holder 24 located at the end of the wrist 18, to which it is joined by an articulation device provided of a waterproof housing motor and, at outside, a notched sector 23 rotating with the nozzle holder 24 and in the notches of which a locking finger 22 is pushed back by a hydraulic cylinder 21 secured to the wrist 18.
  • the nozzle 25 is thus placed at an inclination desired by the action of the engine and maintained by engagement of the locking finger 22 in the notch wish.
  • This possibility of moving the nozzle holder 24 around a horizontal axis on a semicircle, between the two vertical directions, joined to that of turning the arm telescopic 16 on a complete circle, allows to place the nozzle 25 in any orientation.
  • the flexible tubing 20 ends in the nozzle 25 and, as we can see in Figure 3, it ends in front of a sapphire or ceramic launching nozzle 26 which roughly forms the section of the water jet which fate; a jet guide 27 placed at the outlet of the nozzle 25 and separated from the launching nozzle 26 by a chamber 28 retains erratic drops; and it's in room 28 which ends, obliquely to the axis of the jet, a conduit 29 supply of sand, the content of which mixes with this place in the water of the jet, which therefore acquired a capacity abrasion at the outlet of nozzle 25.
  • the duct 29 is a duct for outlet of a hopper 30 which overcomes it and is carried by the telescopic arm 16 at its top;
  • hopper 30 is a small capacity hopper (a few liters) intended for feed regulation, and a large hopper 31 extending over the excavation feeds it through a duct 32 with large cross section.
  • Conduits 29 and 32 are with valves 85 and 86 open and closed since the control cabinet 4.
  • An element interesting of the invention is an induction probe terminated by a tube 37, part of which is a magnet permanent and which extends at the end of the nozzle holder 24: this probe, which the abrasive water jet passes through, is used to recognize by contact the shape and position of the structure 34, which is not necessarily known in advance: the tube 37 is then advanced towards structure 34 until touching it in a number of points, the position of which is communicated to the cabinet 4. We use all the available displacements of the nozzle holder 24 by through the mechanisms that link it to fixed parts of the installation.
  • Races available in the three directions X, Y and Z are in several meters so that nozzle 25 can go around the structure 34; the palpages relate to all sides of it since the nozzle holder 24 can be swiveled in all directions.
  • Contact of structure 34 is detected by a magnetic sensor fixed to the nozzle 25, sensitive displacement of the tube 37, which is otherwise pushed back towards a position extended by a spring 36 disposed behind him and leaning on the structure of the nozzle holder 24, around the nozzle 25.
  • the abrasive water jet is therefore projected towards the structure 34 according to a trajectory decided by the operator of the control cabinet 4 and who can take into account plans of structure 34, observations by cameras 19 and 19 'and information provided by the induction probe.
  • a device located at the rear is used for this purpose.
  • the loop piping includes an inlet section 42 which leads to a filter at sand 43, ends at its top and ends with a disperser 55 which smoothes the water and its content on a sand bed 56 covering a distributor screen 57; water stripped of its largest particles - retained by the sieve 57 and the sand bed 56- flows at the bottom of the sand filter 43 and takes a section intermediate 44 of the loop piping up to bottom of the candle filter 45, in which it rises crossing a sort of strainer 87 with holes occupied by porous shaped cartridges cylindrical filled with crushed resin forming the filter candles 59. Perforations allow the water to pass through the strainer 87 at the location of the filter candles 59 while unloading the last particles in the resin; she then enters a outlet section 46 of the loop piping and returns to pool 10.
  • the filters must be cleaned 43 and 45 periodically impurities which end up patch them up. For this, we isolate them from the rest of the loop piping by closing valves 54, 58 and 60 respectively placed on sections 42, 44 and 46.
  • the sand filter 43 is cleaned by washing with water coming from a basin 61 and rising in a pipe 67 which opens at the bottom of the filter thanks to the action of a pump 62, after a valve has been opened 63; the wash water flows through the sand bed 56 towards the top and flows into a drain line 68 which opens at the top of the filter 43 and whose valve 69 of closure has been opened.
  • the impurities are entrained and discharged into a decanter 80 at the end of the pipe 68.
  • the efficiency of washing can be increased by the action of a booster 64 which is connected to the bottom sand filter 43 and therefore creates an overpressure air, via an air line 65 that closes a valve 66 outside of periods of use.
  • Candles 59 are hanging on the strainer 87 by a low resistance link. They can be evacuated, with the impurities they retain, by sucking them up through another drain pipe 70 whose closing valve 71 has just been opened: the liquid content of the candle filter 45 which surmounts them drops them through this pipe 70 to a another settling tank 72. New 59 candles are safes installed in place of the previous ones.
  • a dosimeter 49 directed towards structure 34 and which measures its contamination; depending on the result found, we can activate a decontamination 51, the active element of which is a turnstile 52 formed of a tube terminated at its ends opposite by two nozzles 53 placed obliquely and in opposite directions, so that a water flow from a bypass 50 of the flexible piping 20 and then traversing the interior of the turnstile 52 exerts a torque on it, which does turn on the base of the decontamination device 51: a rotating jet of water is projected at high pressure; of course, the decontamination device 51 is arranged so that this jet is never intercepted by elements of the telescopic arm 16, wrist 18 or nozzle holder 24, or by elements which are related to them.
  • the jet travels a plane next to wrist 18 and nozzle holder 24 and will strike structure 34 on part of its angular travel, which partly cleans it of inlays of radioactive products.
  • the device decontamination 51 is advantageously placed in front of the installation and can be placed near the nozzle 25.
  • dosimeter 49 should also be placed as close as possible to structure 34. It is possible that the best arrangement includes a nozzle 25 surrounded by the dosimeter 49 and the decontaminator 51 on its two sides, the nozzle 25 being slightly in before.
  • the cutting of the structure 34 then follows.
  • a piece of structure 34 is detached, it is hung to a sling, lifted and removed from the pool 10 and introduced into a storage barrel by means of a bridge rolling or the like.
  • the assembly of the decontamination device 51, of the dosimeter 49 and nozzle 25 on the same mobile device therefore makes it possible to decontaminate quickly and safely and selectively the structure to be cut, which would be more difficult to accomplish with a separate device than would be incentivized to operate much more long time for more safety (lack of dosimeter for measure the initial contamination then its reduction, and lack of sensor to be sure to decontaminate at a sufficiently short distance).
  • the invention makes it possible not to detach any cut whose radioactivity is greater than a fixed value, and whose processing would then be problematic.
  • Figure 5 shows how it is possible to adapt the invention to make it usable in a cutting process outside the confinement offered by the aqueous medium of a swimming pool.
  • the structure 34 is now placed on a bowl-shaped sprayer device 101, the bottom is bristling with pyramids against which water bounces and loses energy before sinking between them at the bottom of the bowl and cross a sieve of prefiltration 102 which retains the largest impurities.
  • the water then enters a funnel 103 and from there in a filter 104 capable of stopping particles solids with a diameter between 5 and 100 ⁇ m, which remain in a sieving bag 105, suspended above of the bottom of the filter 104 and which constitutes its element active; filtered and purified water taken out of the sieving 105 flows to the bottom of the filter 104 and is then evacuated via a pipe 106 which can be closed by a valve 107 and which leads to a drainage installation; the periodic opening of the valve 107 makes it possible to empty the filter 104 of the liquid.
  • Another essential element that has been modified in this achievement is the arrangement of suction recovery device, which ends here to a containment bell 100 surrounding the nozzle holder 24 so as to cover part of the structure 34 corresponding to the cutting area.
  • a horn 108 opens into the volume surrounded by the containment bell 100 and allows suction cutting aerosols; its other end leads to a cyclonic filter 109 provided with a lower pocket of screening 110 for recovering particles of cutting and sand; water flowing below the pocket 110 can be periodically emptied from the filter cyclonic 109 by a pipe 111 leading to the drain installation, when a valve 112 is opened.
  • a valve 113 is closed, arranged on a suction pipe 114, opening out towards the top of the cyclonic filter 109 and by which the still humid air leaves this filter to reach the air-water separator 115 (the bottom of which still has a piping 116 communicating with the drainage installation and can be closed by a valve 117), where it is dried up.
  • the dry air runs through a pipe 118, still fitted with a valve 119 to stop aspiration if desired, and cross a vacuum cleaner 120 before being expelled into a pipe 121.
  • the installation is able to treat completely the nuclear facility parts to dismantle, including the thickest ones and have the most complicated form; cutting can be operated on metals, ceramics and glass in particular.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Working Measures On Existing Buildindgs (AREA)
EP96941072A 1995-11-30 1996-11-28 Installation de demantelement a distance de structures irradiees Expired - Lifetime EP0864162B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9514177A FR2741991B1 (fr) 1995-11-30 1995-11-30 Procede et installation de demantelement a distance de structures irradiees
FR9514177 1995-11-30
PCT/FR1996/001886 WO1997020323A1 (fr) 1995-11-30 1996-11-28 Installation de demantelement a distance de structures irradiees

Publications (2)

Publication Number Publication Date
EP0864162A1 EP0864162A1 (fr) 1998-09-16
EP0864162B1 true EP0864162B1 (fr) 2000-02-23

Family

ID=9485027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96941072A Expired - Lifetime EP0864162B1 (fr) 1995-11-30 1996-11-28 Installation de demantelement a distance de structures irradiees

Country Status (8)

Country Link
US (1) US6049580A (uk)
EP (1) EP0864162B1 (uk)
JP (1) JP4386964B2 (uk)
AU (1) AU1033997A (uk)
DE (1) DE69606778T2 (uk)
FR (1) FR2741991B1 (uk)
UA (1) UA42855C2 (uk)
WO (1) WO1997020323A1 (uk)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111002391A (zh) * 2019-12-30 2020-04-14 安徽傲宇数控科技有限公司 一种竖向移动式水射流切割机

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806278A1 (de) * 1998-02-16 1999-08-26 Alba Ind Gmbh Verfahren zum Zertrennen eines radioaktiven Bauteils eines Kernreaktors und Vorrichtung hierzu
US6402587B1 (en) * 1999-12-22 2002-06-11 General Electric Company Floor mounted ultra high pressure abrasive cutting apparatus
US6656014B2 (en) * 2001-03-12 2003-12-02 Alan P. Aulson Mobile bridge cutting arrangement
DE10115739A1 (de) * 2001-03-26 2002-10-17 Sina Industrieservice Gmbh & C Verfahren und Vorrichtung zur Dekontamination einer Fläche
US6587535B1 (en) * 2001-07-10 2003-07-01 General Electric Company Jet pump slip joint labyrinth seal method
ATE320889T1 (de) * 2001-12-06 2006-04-15 Karl-Heinz Schmall Wasserstrahl-schneidemaschine mit berührungsloser und wahlweise taktiler abstands-führungssensor- einrichtung
US7080888B2 (en) * 2003-03-04 2006-07-25 Ash Equipment Company, Inc. Dual nozzle hydro-demolition system
US8814274B2 (en) * 2004-10-27 2014-08-26 Gerard J. MacNeil Machine and method for deconstructing a vertical wall
FR2957551B1 (fr) * 2010-03-19 2012-08-24 Snecma Procede de desepaississement par jet d'eau d'une piece en materiau composite
FR3007883B1 (fr) * 2013-06-27 2015-07-17 Commissariat Energie Atomique Installation et procede de manutention et decoupe de caisson contenant des produits radioactifs
WO2015123349A2 (en) * 2014-02-11 2015-08-20 Par Systems, Inc. Multi-functional end effector with integrated waterjet, milling spindle system and/or scanning sensor, and a fluid stream catcher mounting system
JP6787688B2 (ja) * 2016-05-16 2020-11-18 オークマ株式会社 工作機械
KR101845493B1 (ko) * 2017-09-18 2018-04-05 주식회사 선광티앤에스 원자력 시설에서 발생되는 방사성 금속폐기물을 절단하기 위한 장치
KR102080909B1 (ko) * 2018-07-06 2020-02-24 한국수력원자력 주식회사 원자로의 해체 시스템
CN110014375B (zh) * 2019-05-06 2021-06-08 广州大学 一种喷头调节机构
DE102019135684A1 (de) * 2019-12-23 2021-06-24 Siempelkamp NIS Ingenieurgesellschaft mbH Verfahren und Anordnung zum Reinigen von Flüssigkeit
CA3113627C (en) * 2020-03-31 2022-04-19 Ats Automation Tooling Systems Inc. Nuclear dismantling apparatus and method
CN112643792A (zh) * 2021-01-29 2021-04-13 阎文忠 水切割刀喷头及驱动水切割刀喷头驱动装置
IT202100018182A1 (it) * 2021-07-09 2023-01-09 Claudio Mascialino Metodo ed impianto per il trattamento di materiale contaminante e/o contaminato, in particolare materiale radioattivo derivante dal decommissioning di componenti attivati e/o contaminati di impianti nucleari
EP4205905A1 (en) * 2021-12-30 2023-07-05 SR Robotics Sp. z.o.o. Underwater, remote-controlled high pressure cutting device with addition of abrasive material, and cutting and abrasive material feeding method

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Publication number Priority date Publication date Assignee Title
ATE36089T1 (de) * 1984-01-26 1988-08-15 Schmutz Gmbh Ernst Verfahren und vorrichtung zum reinigen radioaktiv verseuchter anlagenteile.
FR2638671B1 (fr) * 1988-11-10 1994-09-23 Von Laue Paul Langevin Inst Ma Dispositif et procede de decoupe de pieces irradiees par jet d'eau sous pression
US5427159A (en) * 1994-01-06 1995-06-27 Countertops, Inc. Countertop finishing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111002391A (zh) * 2019-12-30 2020-04-14 安徽傲宇数控科技有限公司 一种竖向移动式水射流切割机

Also Published As

Publication number Publication date
AU1033997A (en) 1997-06-19
UA42855C2 (uk) 2001-11-15
JP2000501180A (ja) 2000-02-02
WO1997020323A1 (fr) 1997-06-05
EP0864162A1 (fr) 1998-09-16
DE69606778T2 (de) 2000-09-21
FR2741991B1 (fr) 1998-01-16
US6049580A (en) 2000-04-11
FR2741991A1 (fr) 1997-06-06
DE69606778D1 (de) 2000-03-30
JP4386964B2 (ja) 2009-12-16

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