EP1395791B1 - Method and installation for destroying a rocket mounted on an ammunition - Google Patents

Method and installation for destroying a rocket mounted on an ammunition Download PDF

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Publication number
EP1395791B1
EP1395791B1 EP02738261A EP02738261A EP1395791B1 EP 1395791 B1 EP1395791 B1 EP 1395791B1 EP 02738261 A EP02738261 A EP 02738261A EP 02738261 A EP02738261 A EP 02738261A EP 1395791 B1 EP1395791 B1 EP 1395791B1
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EP
European Patent Office
Prior art keywords
fuze
liquid agent
corrosive liquid
munition
chamber
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
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EP02738261A
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German (de)
French (fr)
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EP1395791A1 (en
Inventor
Marc Ferrari
Marie Gaudre
Jean-Michel Tauzia
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Safran Ceramics SA
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SNPE Materiaux Energetiques SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
    • F42B33/06—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0091—Elimination of undesirable or temporary components of an intermediate or finished product, e.g. making porous or low density products, purifying, stabilising, drying; Deactivating; Reclaiming

Definitions

  • the present invention is in the field of munitions found on the battlefield. It is more particularly ammunition of all kinds, either abandoned, or fired but not exploded, for various reasons; these ammunition include their trigger rockets.
  • a munition contains a metal envelope containing a main cargo of explosive, smoke, incendiary or chemical nature.
  • the ammunition is equipped with a rocket that includes a firing device into which sensitive materials such as black powder and / or primary explosives and safety mechanisms enter. Depending on the type of main load, it is interposed between the latter and the rocket, explosive relay charges or dispersion.
  • the rocket itself generally comprises a safety mechanism, that is to say a means of interruption of the pyrotechnic chain which, before use, is in the safety position.
  • a safety mechanism that is to say a means of interruption of the pyrotechnic chain which, before use, is in the safety position.
  • the primary explosive is separated from the secondary explosive Relay load or main load: the initiation of the primary explosive by percussion, for example, can not result in the detonation of other charges.
  • this security is removed either voluntarily by an operator, or automatically under the effect of the acceleration of the firing for a shell: therefore a percussion which initiates the primary charge, can cause the detonation of the other charges and the explosion of the ammunition.
  • the munitions considered here are conventional ammunition producing a blast and splintering effect (the main charge is an explosive), but also ammunition containing a smoke composition or an incendiary composition (main charge) dispersed during the explosion. relay charge to produce a masking effect or spread a fire. Finally, it may be chemical munitions that contain at least one toxic chemical agent dispersed by the explosion of the relay charge, these chemical agents are known under the name of "combat gas".
  • the problem to be solved is therefore to bring the munition into a state such that it can be transported to a site or a destruction facility in conditions that meet several constraints: protection of people, the environment and compliance with regulations.
  • WO-A-96 00880 describes a closed enclosure in which a munition can be burned or exploded.
  • the closed chamber is kept in depression to prevent the gaseous effluents from escaping.
  • the closed chamber is supplied with a coolant (preferably water) which, once vaporized, also serves to bind the gaseous effluents and dust.
  • WO-A-92 21918 describes a closed enclosure in which a munition can be burned or exploded.
  • the closed chamber is kept in depression to prevent the gaseous effluents from escaping.
  • the gaseous effluents are withdrawn from the closed chamber to be retained by a known filtering system.
  • WO-A-98 58890 recommends treating a munition with a corrosive liquid agent (for example nitric acid whose normality is between 3 and 8) to at least partially dissolve the container and the contents.
  • a corrosive liquid agent for example nitric acid whose normality is between 3 and 8
  • WO-A-98 58890 recommends the use of an enclosure either to immerse the munition in the corrosive liquid agent or to water said munition with the corrosive liquid agent.
  • WO-A-98 58890 suggests a device for evacuation of gaseous effluents.
  • WO-A-98 58890 does not consider keeping the enclosure in depression, since WO-A-98 58890 offers the option of blowing air or oxygen to influence chemical reactions.
  • DE-C-197 09 367 describes a closed enclosure in which a munition can be burned or dismantled.
  • the closed chamber is maintained in depression and is fed continuously with water which also serves to bind the gaseous effluents.
  • the gaseous effluents are withdrawn from the closed chamber to be retained by a filtering system.
  • the gaseous effluents withdrawn are essentially those resulting from the dissolution of the rocket by the corrosive liquid agent, these gaseous effluents are also those escaping from the munition (for example toxic gases) if the action of the corrosive liquid agent on the rocket has been prolonged beyond the dissolution of the part comprising the primary charge of the rocket.
  • the chamber in which the dissolution takes place is depressed to avoid any dispersion to the outside of these gaseous effluents.
  • the reopening of the enclosure is done after purging or sweeping the atmosphere of the enclosure.
  • the ammunition, whose rocket has been dissolved and therefore for which the risk of explosion is considerably reduced, or even eliminated, is placed in a suitable container for further treatment of destruction of the munition and its components.
  • the dissolution of the rocket is by immersion of said rocket in the corrosive liquid agent.
  • the rocket of the munition is immersed in the corrosive liquid agent.
  • the corrosive liquid agent is agitated by means adapted to promote the action of said corrosive liquid on the metal of the rocket.
  • the dissolution of the rocket is by sprinkling or watering said rocket by the corrosive liquid agent.
  • the corrosive liquid is often new liquid, the limitation of the number of cycles made will be determined by the capacity of the enclosure, specifically by the capacity of the tank which collects corrosive liquid watering.
  • the watering zone may be delimited using a mask disposed around the desired area.
  • the rocket is dissolved by applying a corrosive buffer to said rocket.
  • the corrosive liquid agent is immobilized by an absorbent or gelling material to make the buffer.
  • the corrosive liquid agent is chosen from those usually used in chemical machining.
  • the nature of the corrosive liquid agent used is determined by the nature of the material constituting the rocket.
  • the liquid is essentially a nitric acid solution whose normality is between 3 and 9.
  • the liquid is essentially a solution of soda or potash or a mixture whose normality is between 1 and 10.
  • the initial temperature of the corrosive liquid watering agent of the ammunition rocket or at the beginning of the immersion is greater than the ambient temperature in order to have a sufficient dissolution rate.
  • the initial temperature is greater than 40 ° C.
  • the temperature of the corrosive liquid agent, in which is immersed the fuse of the ammunition is regulated between about 65 ° C and about 90 ° C, by methods, adapted to limit the heating of the ammunition.
  • the pyrolysis of the resulting liquid mixture recovered in the enclosure, after at least one destruction cycle, is carried out in a rotary furnace whose inlet temperature is approximately 400 ° C. and that of exit approximately 800 ° C. .
  • the resulting liquid mixture is for example mixed with an absorbent material and fuel (chips or sawdust, ...) which is incinerated in said furnace to produce the thermal input necessary for pyrolysis.
  • This incineration also includes the appropriate treatment of the fumes from incineration and pyrolysis.
  • the ammunition withdrawn from the enclosure after destruction of its rocket is transported to an appropriate installation.
  • the operation can be continued until the destruction of the contents of the munition.
  • destruction it is necessary to understand here: the effective destruction of the constituents, their dissolution or dissociation and their dispersion in the liquid agent which will then phlegmatize these constituents.
  • nitric acid the corrosive liquid agent used is nitric acid
  • the registrant verified that nitric acid had no effect on black powder, on primary explosives such as mercury fulminate and lead styphnate, on secondary explosives such as tolite or hexogen.
  • primary explosives such as mercury fulminate and lead styphnate
  • secondary explosives such as tolite or hexogen.
  • dissolved nitric acid compounds such as SnCl 4 and TiCl 4
  • destroys the yperite or partially hydrolyzes the phosgene it has no effect on certain arsenic compounds, chloropicrin and fumigant compounds: these substances must therefore be treated by other means than by the action of the corrosive agent.
  • the present invention also relates to an installation for implementing the previously described method.
  • This installation essentially comprises a chamber closed by a cover.
  • the enclosure and the lid must resist any vapors from the corrosive liquid agent. Suitable means allow the depression of the enclosure.
  • the lid comprises the devices for withdrawing the gaseous effluents to an auxiliary enclosure.
  • the tank containing the corrosive liquid agent is made of a material resistant to said corrosive agent and comprises means for regulating the temperature of the mixture during the dissolution of the rocket.
  • the tank optionally comprises sprinkler watering means.
  • the vessel also comprises means for separating the liquid portion from the solid or pasty portion of the mixture resulting from the dissolution of the rocket by the corrosive liquid agent.
  • the enclosure comprises the attachment means of the ammunition to descend to partially or totally immerse in the corrosive liquid agent, to remove it from the liquid and the enclosure.
  • said installation is a mobile installation that is brought as close as possible to the munitions discovery site to be treated. If the conditions of the discovery require it and allow it the destruction of the rockets is done almost in situ.
  • the present invention solves well the problems posed.
  • the rocket and ammunition are separated smoothly and safely. The products resulting from this separation, in fact destruction of the rocket, can be processed simply by methods known elsewhere.
  • the munition, free of its rocket, is in a configuration where it can be safely handled and transported to a facility where it will be destroyed.
  • Figure 1 schematically shows the particular case of the destruction of the rocket shell.
  • the rocket destruction installation 2 mounted on a munition 1 comprises an enclosure 5 closed by a cover 15.
  • the enclosure 5, the cover 15 and the devices associated with them must withstand any possible corrosive agent vapors.
  • the lid 15 comprises vacuum devices 13 of the enclosure 5 to prevent gaseous emissions to the outside: the lid acts as a hood.
  • the cover 15 can close the enclosure 5 in a sealed manner.
  • the cover comprises withdrawal devices 17 for the gaseous effluents which are then stored in an auxiliary enclosure 7.
  • the cover includes handling devices 19 adapted to the size of the cover.
  • a tank 12 which contains the corrosive liquid agent 6 and the mixtures resulting from the dissolution of the rocket 2 and any liquid or solid products escaping from the munition 1 if it is open when the rocket is destroyed.
  • This tank 12 is for example double-walled to regulate the temperature of its contents.
  • the tank comprises mechanical or pneumatic devices (bubbling gas) to homogenize the mixture, these means are not shown in this diagram.
  • the tank 12 is in a material resistant to the corrosive liquid agent 6 in the temperature range: for example the tank 12 may be made of polypropylene.
  • the tank 12 optionally comprises a spraying device 14 of the spindle 2 by the corrosive liquid agent 6.
  • the spraying device 14 is fed either directly from a reservoir 16 containing the new corrosive agent or by taking up the liquid mixture of the tank 12.
  • the tank 12 also comprises means for separating the liquid part 6 from the solid or pasty part resulting from the dissolution of the rocket 2 by the corrosive liquid agent. On the tank 12 a drain installation 11 allows the liquid mixture to be withdrawn for further processing.
  • the lid 15 comprises a fastening device 8 of the ammunition 1.
  • the ammunition 1 is installed in the device 8, vertically, its tip which comprises the rocket 2 directed downwards.
  • the attachment device 8 is a single polypropylene net resistant to corrosive agents, or a cage that can receive one or more ammunition, or a clamp with self-locking jaws to hold the ammunition by its guide flange.
  • the attachment device 8 is connected to a handling device 18 which brings the tip of the munition to the height of the watering device 14 or immerses the tip of the munition in the liquid of the tank 12.
  • the handling device 18 also makes it possible to quickly recover the ammunition and thus to stop the reactions of dissolutions in case of anomalies.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Air Bags (AREA)
  • ing And Chemical Polishing (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The invention concerns the field of ammunitions equipped with their fuze, found on the battlefield. Such ammunitions represent a major pyrotechnic risk. The problem consists in destroying the fuze so as to be able to dismantle said ammunition. The method consists in placing said ammunition ( 1 ) in a closed chamber ( 5 ) to carry out at least once the following cycle: depressurizing the chamber ( 5 ), dissolving the fuze ( 2 ) of the ammunition ( 1 ) with a liquid corrosive agent, drawing off the gaseous effluents towards an auxiliary chamber ( 7 ), reopening the chamber ( 5 ) after dissolving the fuze ( 2 ), removing the ammunition ( 1 ), recovering the mixture resulting from the attack of the fuze ( 2 ) by the liquid corrosive agent ( 6 ) and treating it by pyrolysis.

Description

La présente invention se situe dans le domaine des munitions trouvées sur le champ de bataille. Il s'agit plus particulièrement de munitions de toutes natures, soit abandonnées, soit tirées mais n'ayant pas explosé, pour diverses raisons ; ces munitions comportent leurs fusées de déclenchement.The present invention is in the field of munitions found on the battlefield. It is more particularly ammunition of all kinds, either abandoned, or fired but not exploded, for various reasons; these ammunition include their trigger rockets.

Une munition comporte une enveloppe métallique renfermant un chargement principal de nature explosive, fumigène, incendiaire ou chimique.A munition contains a metal envelope containing a main cargo of explosive, smoke, incendiary or chemical nature.

Pour activer le chargement principal, la munition est équipée d'une fusée qui comporte un dispositif de mise à feu dans lequel entrent des matériaux sensibles tels que la poudre noire ou/et des explosifs primaires et des mécanismes de sécurité. Selon le type de chargement principal, il est interposé entre ce dernier et la fusée, des charges relais d'explosion ou de dispersion.To activate the main load, the ammunition is equipped with a rocket that includes a firing device into which sensitive materials such as black powder and / or primary explosives and safety mechanisms enter. Depending on the type of main load, it is interposed between the latter and the rocket, explosive relay charges or dispersion.

Il est bien connu de l'homme de l'art que la partie la plus sensible de la munition est la fusée. La fusée et le corps principal sont conditionnés dans des emballages séparés et ne sont assemblés qu'au moment de l'utilisation. Une munition privée de sa fusée est donc considérée comme très sûre.
La fusée elle-même comporte en général un mécanisme de sécurité, c'est à dire un moyen d'interruption de la chaîne pyrotechnique qui, avant l'utilisation, est en position de sécurité. Dans cette position de sécurité l'explosif primaire est séparé de l'explosif secondaire de la charge relais ou de la charge principale : l'initiation de l'explosif primaire par percussion, par exemple, ne peut entraîner la détonation des autres charges. Au moment de l'utilisation, cette sécurité est enlevée soit volontairement par un opérateur, soit automatiquement sous l'effet de l'accélération du tir pour un obus : donc une percussion qui initie la charge primaire, peut provoquer la détonation des autres charges et l'explosion de la munition.It is well known to those skilled in the art that the most sensitive part of the ammunition is the rocket. The rocket and the main body are packaged in separate packages and are assembled only at the time of use. A private ammunition of his rocket is therefore considered very safe.
The rocket itself generally comprises a safety mechanism, that is to say a means of interruption of the pyrotechnic chain which, before use, is in the safety position. In this safety position the primary explosive is separated from the secondary explosive Relay load or main load: the initiation of the primary explosive by percussion, for example, can not result in the detonation of other charges. At the moment of use, this security is removed either voluntarily by an operator, or automatically under the effect of the acceleration of the firing for a shell: therefore a percussion which initiates the primary charge, can cause the detonation of the other charges and the explosion of the ammunition.

Les munitions ici considérées sont des munitions conventionnelles produisant un effet de souffle et de projection d'éclats (la charge principale est un explosif), mais aussi des munitions contenant une composition fumigène ou une composition incendiaire (charge principale) dispersée lors de l'explosion de la charge relais pour produire un effet de masquage ou propager un incendie. Enfin il peut s'agir de munitions chimiques qui contiennent au moins un agent chimique toxique dispersé par l'explosion de la charge relais, ces agents chimiques sont connus sous la dénomination de « gaz de combat ».The munitions considered here are conventional ammunition producing a blast and splintering effect (the main charge is an explosive), but also ammunition containing a smoke composition or an incendiary composition (main charge) dispersed during the explosion. relay charge to produce a masking effect or spread a fire. Finally, it may be chemical munitions that contain at least one toxic chemical agent dispersed by the explosion of the relay charge, these chemical agents are known under the name of "combat gas".

Ces munitions trouvées sur le champ de bataille, souvent plusieurs dizaines d'années après les évènements (plus particulièrement ceux de la 1ère ou 2ème guerre mondiale) sont en mauvais état. Surtout lesdites munitions présentent un risque majeur qui est celui d'explosion : la fusée est montée sur la munition et son état (en sécurité ou non) est inconnu. Il n'y a aucune protection possible pour l'opérateur vis à vis de ce risque d'explosion.These munitions found on the battlefield, often decades after the events (especially those of the 1 st or 2 nd world war) are in poor condition. Especially the said ammunition present a major risk which is that of explosion: the rocket is mounted on the ammunition and its state (safe or not) is unknown. There is no protection for the operator against this risk of explosion.

Le problème à résoudre est donc d'amener la munition dans un état tel qu'elle puisse être transportée vers un site ou une installation de destruction dans des conditions qui répondent à plusieurs contraintes : protection des personnes, de l'environnement et respect des réglementations en vigueur.The problem to be solved is therefore to bring the munition into a state such that it can be transported to a site or a destruction facility in conditions that meet several constraints: protection of people, the environment and compliance with regulations.

WO-A-96 00880 décrit une enceinte fermée dans laquelle une munition peut être brûlée ou explosée. L'enceinte fermée est maintenue en dépression pour éviter que les effluents gazeux ne s'échappent. L'enceinte fermée est alimentée d'un liquide de refroidissement (de préférence de l'eau) qui, une fois vaporisé, sert aussi à lier les effluents gazeux et les poussières. WO-A-96 00880 describes a closed enclosure in which a munition can be burned or exploded. The closed chamber is kept in depression to prevent the gaseous effluents from escaping. The closed chamber is supplied with a coolant (preferably water) which, once vaporized, also serves to bind the gaseous effluents and dust.

WO-A-92 21918 décrit une enceinte fermée dans laquelle une munition peut être brûlée ou explosée. L'enceinte fermée est maintenue en dépression pour éviter que les effluents gazeux ne s'échappent. Les effluents gazeux sont soutirés à l'enceinte fermée pour être retenus par un système de filtrage connu. WO-A-92 21918 describes a closed enclosure in which a munition can be burned or exploded. The closed chamber is kept in depression to prevent the gaseous effluents from escaping. The gaseous effluents are withdrawn from the closed chamber to be retained by a known filtering system.

WO-A-98 58890 préconise de traiter une munition par un agent liquide corrosif (par exemple de l'acide nitrique dont la normalité est comprise entre 3 et 8) pour en dissoudre au moins partiellement le conteneur et le contenu. WO-A-98 58890 recommends treating a munition with a corrosive liquid agent (for example nitric acid whose normality is between 3 and 8) to at least partially dissolve the container and the contents.

Pour cela il peut être nécessaire d'enlever la fusée au préalable. WO-A-98 58890 préconise l'utilisation d'une enceinte soit, pour immerger la munition dans l'agent liquide corrosif soit pour arroser ladite munition avec l'agent liquide corrosif. WO-A-98 58890 suggère un dispositif d'évacuation des effluents gazeux. WO-A-98 58890 ne considère pas de maintenir l'enceinte en dépression, puisque WO-A-98 58890 propose en option d'insuffler de l'air ou de l'oxygène pour influencer les réactions chimiques.For this it may be necessary to remove the rocket beforehand. WO-A-98 58890 recommends the use of an enclosure either to immerse the munition in the corrosive liquid agent or to water said munition with the corrosive liquid agent. WO-A-98 58890 suggests a device for evacuation of gaseous effluents. WO-A-98 58890 does not consider keeping the enclosure in depression, since WO-A-98 58890 offers the option of blowing air or oxygen to influence chemical reactions.

DE-C-197 09 367 décrit une enceinte fermée dans laquelle une munition peut être brûlée ou démantelée. L'enceinte fermée est maintenue en dépression et est alimentée en continu par de l'eau qui sert aussi à lier les effluents gazeux. Les effluents gazeux sont soutirés à l'enceinte fermée pour être retenus par un système de filtrage. DE-C-197 09 367 describes a closed enclosure in which a munition can be burned or dismantled. The closed chamber is maintained in depression and is fed continuously with water which also serves to bind the gaseous effluents. The gaseous effluents are withdrawn from the closed chamber to be retained by a filtering system.

Dans un domaine différent du contexte où nous nous plaçons le brevet FR 2 704 641 décrit une installation automatique de neutralisation de munitions chimiques. Pour avoir accès à l'intérieur de la munition et neutraliser la charge chimique, cette installation comporte un moyen de séparation de la fusée et du corps de la munition . Ledit moyen est constitué par une lance à jet d'eau mélangée de charges abrasives qui découpe la fusée qui est alors recueillie dans un support ; ensuite des moyens appropriés permettent d'introduire à l'intérieur de la munition un agent dissolvant de la charge d'agent chimique. Il est évident que ce moyen de séparation de la fusée et du corps de la munition n'est pas utilisable pour résoudre notre problème : le procédé est trop agressif pour une fusée dont on ne connaît pas l'état (fusée en position sécurité ou non).In a field different from the context in which we place the patent FR 2,704,641 describes an automatic facility for the neutralization of chemical munitions. To access the interior of the munition and neutralize the chemical load, this installation comprises a means of separation of the rocket and the body of the munition. Said means is constituted by a jet of water mixed with abrasive charges which cuts the rocket which is then collected in a support; then appropriate means allow to introduce inside the ammunition agent dissolving the chemical agent load. It is obvious that this means of separation of the rocket and the body of the ammunition is not usable to solve our problem: the method is too aggressive for a rocket whose state is not known (rocket in safe position or not ).

Par ailleurs, la corrosion ou l'usinage chimique de pièce mécaniques, plus ou moins grandes et de formes complexes, sont connus. L'utilisation de ces techniques pour le démantèlement de munitions pose toutefois plusieurs problèmes. Tout d'abord le choix d'un agent corrosif de composition assez simple mais efficace ; puis celui de la compatibilité dudit agent corrosif avec les produits rencontrés ou qui seront rencontrés au cours de l'action de l'agent corrosif sur la munition ; notamment sur les explosifs primaires et secondaires, éventuellement les autres compositions (fumigènes ou incendiaires) et les éventuels agents chimiques. EnfinMoreover, the corrosion or the chemical machining of mechanical parts, more or less large and complex shapes, are known. However, the use of these techniques for the dismantling of ammunition poses several problems. First of all, the choice of a corrosive agent of rather simple but effective composition; then that of the compatibility of said corrosive agent with the products encountered or which will be encountered during the action of the corrosive agent on the munition; in particular on the primary and secondary explosives, possibly the other compositions (smoke or incendiaries) and the possible chemical agents. Finally

un problème difficile et important est celui du traitement du mélange résultant de l'action de l'agent corrosif sur la munition. Ce mélange ne peut être rejeté tel que et sa neutralisation chimique est très délicate.a difficult and important problem is that of the treatment of the mixture resulting from the action of the corrosive agent on the munition. This mixture can not be rejected as such and its chemical neutralization is very delicate.

La présente invention concerne un procédé de destruction de fusées montées sur des munitions comprenant chacune un corps, une charge explosive de dispersion initiée par une fusée, ledit procédé consistant à placer au moins une munition dans une enceinte qui est alors fermée et caractérisé en ce que le cycle suivant d'opérations est effectué au moins une fois :

  • l'enceinte est mise en dépression,
  • la fusée est dissoute par un agent liquide corrosif,
  • les effluents gazeux sont soutirés vers une enceinte auxiliaire pour un traitement ultérieur,
  • après dissolution de la fusée l'enceinte est réouverte,
  • la munition est retirée et conditionnée dans un conteneur adapté pour un traitement ultérieur,
  • éventuellement un autre cycle de destruction est répété jusqu'à ce l'agent liquide corrosif ne soit plus suffisamment corrosif pour assurer un cycle supplémentaire,
  • le mélange liquide résultant de l'attaque des fusées par l'agent liquide corrosif est alors récupéré,
  • ledit mélange liquide est ensuite traité par pyrolyse,
  • les dépôts solides ou pâteux sont récupérés, convenablement conditionnés pour des traitements ultérieurs.
The present invention relates to a method for destroying rockets mounted on ammunition each comprising a body, an explosive charge of dispersion initiated by a rocket, said method consisting in placing at least one ammunition in an enclosure which is then closed and characterized in that the following cycle of operations is performed at least once:
  • the enclosure is depressed,
  • the rocket is dissolved by a corrosive liquid agent,
  • the gaseous effluents are withdrawn to an auxiliary chamber for further processing,
  • after dissolution of the rocket the enclosure is reopened,
  • the ammunition is removed and packaged in a suitable container for further processing,
  • possibly another cycle of destruction is repeated until the corrosive liquid agent is no longer sufficiently corrosive to ensure an additional cycle,
  • the liquid mixture resulting from the attack of the rockets by the corrosive liquid agent is then recovered,
  • said liquid mixture is then treated by pyrolysis,
  • solid or pasty deposits are recovered, suitably packaged for subsequent treatments.

Les effluents gazeux soutirés sont essentiellement ceux résultants de la dissolution de la fusée par l'agent liquide corrosif, ces effluents gazeux sont aussi ceux s'échappant de la munition (par exemple des gaz toxiques) si l'action de l'agent liquide corrosif sur la fusée a été prolongée au delà de la dissolution de la partie comportant la charge primaire de la fusée. L'enceinte dans laquelle se fait la dissolution est mise en dépression pour éviter toute dispersion vers l'extérieur de ces effluents gazeux. La réouverture de l'enceinte se fait après une purge ou un balayage de l'atmosphère de l'enceinte. La munition, dont la fusée a été dissoute et donc pour laquelle le risque d'explosion est considérablement réduit, voire même supprimé, est placée dans un conteneur approprié pour un traitement ultérieur de destruction de la munition et de ses constituants.The gaseous effluents withdrawn are essentially those resulting from the dissolution of the rocket by the corrosive liquid agent, these gaseous effluents are also those escaping from the munition (for example toxic gases) if the action of the corrosive liquid agent on the rocket has been prolonged beyond the dissolution of the part comprising the primary charge of the rocket. The chamber in which the dissolution takes place is depressed to avoid any dispersion to the outside of these gaseous effluents. The reopening of the enclosure is done after purging or sweeping the atmosphere of the enclosure. The ammunition, whose rocket has been dissolved and therefore for which the risk of explosion is considerably reduced, or even eliminated, is placed in a suitable container for further treatment of destruction of the munition and its components.

Dans une première réalisation de l'invention la dissolution de la fusée se fait par immersion de ladite fusée dans l'agent liquide corrosif. Avantageusement seule la fusée de la munition est immergée dans l'agent liquide corrosif. L'agent liquide corrosif est agité par des moyens adaptés pour favoriser l'action dudit liquide corrosif sur le métal de la fusée.In a first embodiment of the invention the dissolution of the rocket is by immersion of said rocket in the corrosive liquid agent. Advantageously only the rocket of the munition is immersed in the corrosive liquid agent. The corrosive liquid agent is agitated by means adapted to promote the action of said corrosive liquid on the metal of the rocket.

Dans une seconde réalisation de l'invention la dissolution de la fusée se fait par aspersion ou arrosage de ladite fusée par l'agent liquide corrosif. Dans cette réalisation le liquide corrosif étant souvent du liquide neuf, la limitation du nombre de cycles réalisés va être déterminée par la contenance de l'enceinte, plus précisément par la contenance de la cuve qui recueille le liquide corrosif d'arrosage. La zone d'arrosage peut être délimitée en utilisant un masque disposé autour de la zone souhaitée.In a second embodiment of the invention the dissolution of the rocket is by sprinkling or watering said rocket by the corrosive liquid agent. In this embodiment the corrosive liquid is often new liquid, the limitation of the number of cycles made will be determined by the capacity of the enclosure, specifically by the capacity of the tank which collects corrosive liquid watering. The watering zone may be delimited using a mask disposed around the desired area.

Dans une troisième réalisation de l'invention la dissolution de la fusée se fait par application d'un tampon corrosif sur ladite fusée. L'agent liquide corrosif est immobilisé par un matériau absorbant ou gélifiant pour réaliser le tampon.In a third embodiment of the invention, the rocket is dissolved by applying a corrosive buffer to said rocket. The corrosive liquid agent is immobilized by an absorbent or gelling material to make the buffer.

L'agent liquide corrosif est choisi parmi ceux habituellement utilisé en usinage chimique. La nature de l'agent liquide corrosif utilisé est déterminée par la nature du matériau constitutif de la fusée. Avantageusement si la fusée est à base de fer ou d'acier, par exemple pour des obus, le liquide est essentiellement une solution d'acide nitrique dont la normalité est comprise entre 3 et 9.The corrosive liquid agent is chosen from those usually used in chemical machining. The nature of the corrosive liquid agent used is determined by the nature of the material constituting the rocket. Advantageously, if the rocket is based on iron or steel, for example for shells, the liquid is essentially a nitric acid solution whose normality is between 3 and 9.

Si la fusée est à base d'aluminium, par exemple pour les bombes d'aviation, le liquide est essentiellement une solution de soude ou de potasse ou un mélange dont la normalité est comprise entre 1 et 10.If the rocket is based on aluminum, for example for aviation bombs, the liquid is essentially a solution of soda or potash or a mixture whose normality is between 1 and 10.

Préférentiellement la température initiale de l'agent liquide corrosif d'arrosage de la fusée de la munition ou au début de l'immersion, est supérieure à la température ambiante pour avoir une vitesse de dissolution suffisante. Par exemple dans le cas d'une solution d'acide nitrique la température initiale est supérieure à 40°C.Preferably, the initial temperature of the corrosive liquid watering agent of the ammunition rocket or at the beginning of the immersion is greater than the ambient temperature in order to have a sufficient dissolution rate. For example, in the case of a nitric acid solution, the initial temperature is greater than 40 ° C.

Préférentiellement encore la température de l'agent liquide corrosif, dans lequel est immergé la fusée de la munition est régulée entre environ 65°C et environ 90°C, par des procédés, adaptés pour limiter l'échauffement de la munition.Preferably also the temperature of the corrosive liquid agent, in which is immersed the fuse of the ammunition is regulated between about 65 ° C and about 90 ° C, by methods, adapted to limit the heating of the ammunition.

Préférentiellement la pyrolyse du mélange liquide résultant récupéré dans l'enceinte, après au moins un cycle de destruction, se fait dans un four tournant dont la température d'entrée est d'environ 400°C et celle de sortie d'environ 800°C. Le mélange liquide résultant est par exemple mélangé à un matériau absorbant et combustible (copeaux ou sciure de bois, ...) qui est incinéré dans ledit four pour produire l'apport thermique nécessaire à la pyrolyse. Cette incinération comporte aussi le traitement approprié des fumées de l'incinération et de la pyrolyse.Preferably, the pyrolysis of the resulting liquid mixture recovered in the enclosure, after at least one destruction cycle, is carried out in a rotary furnace whose inlet temperature is approximately 400 ° C. and that of exit approximately 800 ° C. . The resulting liquid mixture is for example mixed with an absorbent material and fuel (chips or sawdust, ...) which is incinerated in said furnace to produce the thermal input necessary for pyrolysis. This incineration also includes the appropriate treatment of the fumes from incineration and pyrolysis.

Avantageusement la munition retirée de l'enceinte après destruction de sa fusée, est transportée vers une installation appropriée .Advantageously, the ammunition withdrawn from the enclosure after destruction of its rocket, is transported to an appropriate installation.

Avantageusement dans le cas des munitions chimiques l'opération peut être poursuivie jusqu'à la destruction des contenus de la munition. Par destruction il faut ici entendre : la destruction effective des constituants, leur mise en solution ou leur dissociation et leur dispersion dans l'agent liquide qui va alors flegmatiser ces constituants.Advantageously in the case of chemical munitions the operation can be continued until the destruction of the contents of the munition. By destruction it is necessary to understand here: the effective destruction of the constituents, their dissolution or dissociation and their dispersion in the liquid agent which will then phlegmatize these constituents.

Par exemple lorsque l'agent liquide corrosif utilisé est l'acide nitrique ; le titulaire a vérifié que l'acide nitrique était sans effet sur la poudre noire, sur des explosifs primaires tels que le fulminate de mercure et le styphnate de plomb, sur des explosifs secondaires tels que la tolite ou l'hexogène. Lorsque la dissolution de la fusée par de l'acide nitrique peut mettre l'acide nitrique en contact avec d'autres composés contenu dans la munition il faut là aussi vérifier le comportement dudit acide. Si l'acide nitrique dissout des composés tels que Sn Cl4 et TiCl4, détruit l'ypérite ou hydrolyse partiellement le phosgène, il est sans effet sur certains composés arséniés, sur la chloropicrine et les composés fumigènes : ces substances doivent donc être traitées par d'autres moyens que par l'action de l'agent corrosif.For example when the corrosive liquid agent used is nitric acid; the registrant verified that nitric acid had no effect on black powder, on primary explosives such as mercury fulminate and lead styphnate, on secondary explosives such as tolite or hexogen. When the dissolution of the rocket by nitric acid can put the nitric acid in contact with other compounds contained in the ammunition must also verify the behavior of said acid. If the dissolved nitric acid compounds such as SnCl 4 and TiCl 4, destroys the yperite or partially hydrolyzes the phosgene, it has no effect on certain arsenic compounds, chloropicrin and fumigant compounds: these substances must therefore be treated by other means than by the action of the corrosive agent.

La présente invention concerne également une installation pour mettre en oeuvre le procédé précédemment décrit. Cette installation comporte essentiellement une enceinte fermée par un couvercle. L'enceinte et le couvercle doivent résister aux éventuelles vapeurs de l'agent liquide corrosif. Des moyens appropriés permettent la mise en dépression de l'enceinte. Le couvercle comporte les dispositifs de soutirage des effluents gazeux vers une enceinte auxiliaire. La cuve contenant l'agent liquide corrosif est en matériau résistant audit agent corrosif et comporte des moyens pour réguler la température du mélange pendant la dissolution de la fusée. La cuve comporte éventuellement des moyens d'arrosage des fusées. La cuve comporte aussi des moyens pour séparer la partie liquide de la partie solide ou pâteuse du mélange résultant de la dissolution de la fusée par l'agent liquide corrosif.The present invention also relates to an installation for implementing the previously described method. This installation essentially comprises a chamber closed by a cover. The enclosure and the lid must resist any vapors from the corrosive liquid agent. Suitable means allow the depression of the enclosure. The lid comprises the devices for withdrawing the gaseous effluents to an auxiliary enclosure. The tank containing the corrosive liquid agent is made of a material resistant to said corrosive agent and comprises means for regulating the temperature of the mixture during the dissolution of the rocket. The tank optionally comprises sprinkler watering means. The vessel also comprises means for separating the liquid portion from the solid or pasty portion of the mixture resulting from the dissolution of the rocket by the corrosive liquid agent.

Enfin l'enceinte comporte les moyens d'accrochage de la munition permettant de la descendre pour l'immerger partiellement ou totalement dans l'agent liquide corrosif, de la retirer de ce liquide et de l'enceinte.Finally the enclosure comprises the attachment means of the ammunition to descend to partially or totally immerse in the corrosive liquid agent, to remove it from the liquid and the enclosure.

L'enceinte comporte aussi un certain nombre d'installations périphériques :

  • une installation pour la préparation de la solution d'agent liquide corrosif à la composition et au titre adapté,
  • une enceinte auxiliaire pour stocker ou traiter les effluents gazeux de la réaction de dissolution,
  • différents conteneurs pour conditionner la munition dont la fusée a été détruite, les mélanges liquides ou solides et pâteux résultants de la dissolution de la fusée et de l'ouverture éventuelle de la munition.
The enclosure also has a number of peripheral installations:
  • an installation for the preparation of the liquid agent solution which is corrosive to the composition and the adapted title,
  • an auxiliary chamber for storing or treating the gaseous effluents of the dissolution reaction,
  • different containers for conditioning the ammunition whose rocket was destroyed, the liquid or solid and pasty mixtures resulting from the dissolution of the rocket and the eventual opening of the ammunition.

Avantageusement ladite installation est une installation mobile que l'on amène le plus près possible du site de découverte des munitions à traiter. Si les conditions de la découverte le nécessitent et le permettent la destruction des fusées est faite quasiment in situ.
La présente invention résout bien les problèmes posés. La séparation de la fusée et du corps de la munition se fait en douceur, dans des conditions de sécurité satisfaisantes. Les produits résultants de cette séparation, en fait destruction de la fusée, peuvent être traités simplement par des procédés connus par ailleurs. La munition, débarrassée de sa fusée est dans une configuration où elle peut être manipulée et transportée sans danger vers une installation où elle sera détruite.Advantageously, said installation is a mobile installation that is brought as close as possible to the munitions discovery site to be treated. If the conditions of the discovery require it and allow it the destruction of the rockets is done almost in situ.
The present invention solves well the problems posed. The rocket and ammunition are separated smoothly and safely. The products resulting from this separation, in fact destruction of the rocket, can be processed simply by methods known elsewhere. The munition, free of its rocket, is in a configuration where it can be safely handled and transported to a facility where it will be destroyed.

Ci-dessous l'invention est exposée plus en détail à l'aide de la figure 1. La figure 1 représente de façon schématique le cas particulier de la destruction de la fusée d'obus.Below the invention is explained in more detail with the help of Figure 1. Figure 1 schematically shows the particular case of the destruction of the rocket shell.

L'installation de destruction de fusée 2 montée sur une munition 1 comporte une enceinte 5 fermée par un couvercle 15. L'enceinte 5, le couvercle 15 et les dispositifs qui leurs sont associés doivent résister aux éventuelles vapeurs d'agent corrosif. Le couvercle 15 comprend des dispositifs de mise en dépression 13 de l'enceinte 5 pour éviter des émanations gazeuses vers l'extérieur : le couvercle agit comme une hotte aspirante. Optionnellement le couvercle 15 peut fermer de façon étanche l'enceinte 5. Le couvercle comporte des dispositifs de soutirage 17 des effluents gazeux qui sont alors stockés dans une enceinte auxiliaire 7. Le couvercle comporte des dispositifs de manutention 19 adaptés à la taille du couvercle. A l'intérieur de l'enceinte 5, se trouve une cuve 12 qui contient l'agent liquide corrosif 6 et les mélanges résultant de la dissolution de la fusée 2 et des éventuels produits liquides ou solides qui s'échappent de la munition 1 si elle est ouverte lors de la destruction de la fusée. Cette cuve 12 est par exemple à double paroi pour réguler la température de son contenu. La cuve comporte des dispositifs mécaniques ou pneumatiques (bullage de gaz) pour homogénéiser le mélange, ces moyens ne sont pas représentés sur le présent schéma. La cuve 12 est dans un matériau résistant à l'agent liquide corrosif 6 dans la plage de température : par exemple la cuve 12 peut être en polypropylène.The rocket destruction installation 2 mounted on a munition 1 comprises an enclosure 5 closed by a cover 15. The enclosure 5, the cover 15 and the devices associated with them must withstand any possible corrosive agent vapors. The lid 15 comprises vacuum devices 13 of the enclosure 5 to prevent gaseous emissions to the outside: the lid acts as a hood. Optionally, the cover 15 can close the enclosure 5 in a sealed manner. The cover comprises withdrawal devices 17 for the gaseous effluents which are then stored in an auxiliary enclosure 7. The cover includes handling devices 19 adapted to the size of the cover. Inside the chamber 5, there is a tank 12 which contains the corrosive liquid agent 6 and the mixtures resulting from the dissolution of the rocket 2 and any liquid or solid products escaping from the munition 1 if it is open when the rocket is destroyed. This tank 12 is for example double-walled to regulate the temperature of its contents. The tank comprises mechanical or pneumatic devices (bubbling gas) to homogenize the mixture, these means are not shown in this diagram. The tank 12 is in a material resistant to the corrosive liquid agent 6 in the temperature range: for example the tank 12 may be made of polypropylene.

La cuve 12 comporte éventuellement un dispositif d'arrosage 14 de la fusée 2 par l'agent liquide corrosif 6. Le dispositif d'arrosage 14 est alimenté soit directement à partir d'un réservoir 16 contenant de l'agent corrosif neuf soit en reprenant le mélange liquide de la cuve 12.The tank 12 optionally comprises a spraying device 14 of the spindle 2 by the corrosive liquid agent 6. The spraying device 14 is fed either directly from a reservoir 16 containing the new corrosive agent or by taking up the liquid mixture of the tank 12.

La cuve 12 comporte aussi des moyens pour séparer la partie liquide 6 de la partie solide ou pâteuse résultant de la dissolution de la fusée 2 par l'agent liquide corrosif. Sur la cuve 12 une installation de vidange 11 permet de soutirer le mélange liquide pour son traitement ultérieur.The tank 12 also comprises means for separating the liquid part 6 from the solid or pasty part resulting from the dissolution of the rocket 2 by the corrosive liquid agent. On the tank 12 a drain installation 11 allows the liquid mixture to be withdrawn for further processing.

Le couvercle 15 comporte un dispositif d'accrochage 8 de la munition 1. La munition 1 est installée, dans le dispositif 8, verticalement, sa pointe qui comporte la fusée 2 dirigée vers le bas. Par exemple le dispositif d'accrochage 8 est un simple filet en polypropylène résistant aux agent corrosifs, ou une cage qui peut recevoir une ou plusieurs munitions, ou encore une pince à mâchoires autobloquantes pour retenir la munition par sa collerette de guidage. Le dispositif d'accrochage 8 est relié à un dispositif de manutention 18 qui amène la pointe de la munition à la hauteur du dispositif d'arrosage 14 ou immerge la pointe de la munition dans le liquide de la cuve 12. Le dispositif de manutention 18 permet aussi de relever rapidement la munition et donc de stopper les réactions de dissolutions en cas d'anomalies.The lid 15 comprises a fastening device 8 of the ammunition 1. The ammunition 1 is installed in the device 8, vertically, its tip which comprises the rocket 2 directed downwards. For example, the attachment device 8 is a single polypropylene net resistant to corrosive agents, or a cage that can receive one or more ammunition, or a clamp with self-locking jaws to hold the ammunition by its guide flange. The attachment device 8 is connected to a handling device 18 which brings the tip of the munition to the height of the watering device 14 or immerses the tip of the munition in the liquid of the tank 12. The handling device 18 also makes it possible to quickly recover the ammunition and thus to stop the reactions of dissolutions in case of anomalies.

Un cycle de destruction de fusée commence sur l'installation ouverte :

  • par l'installation de la munition 1 dans le dispositif d'accrochage 8,
  • la munition 1 est disposée verticalement, fusée 2 dirigée vers le bas,
  • le couvercle 15, avec le dispositif d'accrochage 8 relié au dispositif de manutention 18, est amené sur l'enceinte 5 ; il est descendu pour réaliser la fermeture de l'enceinte 5. Le dispositif de mise en dépression 13 et le dispositif de soutirage 17 sont raccordés. Le dispositif de manutention 18 amène soit la pointe de la munition 1 à la hauteur du dispositif d'arrosage 14 qui est alors activé soit immerge la pointe de la munition dans le bain contenu dans la cuve 12. La réaction de dissolution de la fusée 2 commence,
  • en fin de dissolution l'atmosphère de l'enceinte 5 est balayée par un gaz. Les dispositifs 13 et 17 sont débranchés, le couvercle 15 relevé et déplacé de façon à retirer la munition, sans sa fusée qui a été détruite, du dispositif d'accrochage 8.
La description porte sur une seule munition, il est évident que suivant la taille des munitions et celle de l'installation plusieurs munitions peuvent être traitées simultanément.A rocket destruction cycle begins on the open installation:
  • by the installation of the munition 1 in the attachment device 8,
  • the ammunition 1 is disposed vertically, rocket 2 directed downwards,
  • the cover 15, with the attachment device 8 connected to the handling device 18, is brought to the enclosure 5; it is lowered to close the enclosure 5. The vacuum device 13 and the withdrawal device 17 are connected. The handling device 18 brings either the tip of the munition 1 to the height of the watering device 14 which is then activated or immersed the tip of the ammunition in the bath contained in the tank 12. The dissolution reaction of the rocket 2 start,
  • at the end of dissolution the atmosphere of the chamber 5 is swept by a gas. The devices 13 and 17 are disconnected, the lid 15 raised and moved so as to withdraw the munition, without its rocket which has been destroyed, from the attachment device 8.
The description relates to a single ammunition, it is obvious that according to the size of ammunition and that of the installation several munitions can be treated simultaneously.

Claims (11)

  1. A method for the destruction of fuzes (2) mounted in munitions (1), each munition comprising especially a body (3) and an explosive dispersion charge (4) initiated by a fuze (2), consisting in placing at least one munition (1) in a closed chamber (5), in which the following cycle of operations is carried out at least once:
    - a reduced pressure is created in the chamber (5);
    - the fuze (2) is dissolved by a corrosive liquid agent (6);
    - the gaseous effluents are withdrawn to an auxiliary chamber (7) for subsequent treatment;
    - after the fuze (2) has been dissolved, the chamber (5) is reopened;
    - the munition (1) is removed and packaged for subsequent treatment;
    - optionally, another destruction cycle is carried out until the corrosive agent is no longer sufficiently corrosive to provide an additional cycle;
    - the liquid mixture resulting from etching away the fuzes (2) by the corrosive liquid agent (6) is then recovered; and
    - said mixture is then treated by pyrolysis.
  2. The method according to claim 1, characterized in that the fuze (2) is dissolved by immersing said fuze in the corrosive liquid agent (6).
  3. The method according to claim 1, characterized in that the fuze (2) is dissolved by sprinkling said fuze with the corrosive liquid agent (6).
  4. The method according to any one of claims 1 to 3, characterized in that the corrosive liquid agent essentially comprises a nitric acid solution whose normality is between 3 and 9.
  5. The method according to any one of claims 1 to 3, characterized in that the corrosive liquid agent essentially comprises a sodium hydroxide solution, a potassium hydroxide solution or a mixture thereof, the normality of which is between 1 and 10.
  6. The method according to any one of claims 1 to 5, characterized in that the initial temperature of the corrosive liquid agent is greater than 40°C.
  7. The method according to any one of claims 1 to 6, characterized in that the temperature of the corrosive liquid agent is regulated between about 65°C and about 90°C.
  8. The method according to any one of claims 1 to 7, characterized in that the pyrolysis of the resulting mixture, recovered from the chamber (5) after at least one destruction cycle, is carried out in a rotary furnace whose inlet temperature is about 400°C and whose outlet temperature is about 800°C.
  9. The method according to any one of claims 1 to 8, characterized in that the munition (1) removed from the chamber (5) after destruction of its fuze is destroyed in an appropriate plant.
  10. The method according to any one of claims 1 to 9, characterized in that the operation is continued until the contents of the munition have been destroyed.
  11. Installation for the destruction of fuzes (2) mounted in munitions (1), said installation comprising a chamber (5), a cover (15) that includes a device (13) for creating a reduced pressure in the closed chamber (5), a device (17) for withdrawing the gaseous effluents to an auxiliary chamber (7) and a device (8) for fastening a munition (1) to be treated by a corrosive liquid agent (6), in which said fastening device (8) is moved by a device (18) either so as to immerse the fuze (2) in the corrosive liquid agent (6) or so as to bring said fuze (2) opposite a sprinkling device (14).
EP02738261A 2001-05-21 2002-05-17 Method and installation for destroying a rocket mounted on an ammunition Expired - Lifetime EP1395791B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0106655 2001-05-21
FR0106655A FR2824901B1 (en) 2001-05-21 2001-05-21 METHOD AND INSTALLATION FOR ROCKET DESTRUCTION MOUNTED ON AMMUNITION
PCT/FR2002/001669 WO2002095322A1 (en) 2001-05-21 2002-05-17 Method and installation for destroying a rocket mounted on an ammunition

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EP1395791A1 EP1395791A1 (en) 2004-03-10
EP1395791B1 true EP1395791B1 (en) 2007-08-15

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JP (1) JP3927126B2 (en)
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DE (1) DE60221826T2 (en)
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JP3688564B2 (en) * 2000-07-24 2005-08-31 株式会社神戸製鋼所 Chemical bomb demolition equipment

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DE60221826D1 (en) 2007-09-27
JP3927126B2 (en) 2007-06-06
US20040107824A1 (en) 2004-06-10
ATE370384T1 (en) 2007-09-15
JP2004531685A (en) 2004-10-14
EP1395791A1 (en) 2004-03-10
FR2824901B1 (en) 2003-09-12
FR2824901A1 (en) 2002-11-22
CN1503895A (en) 2004-06-09
DE60221826T2 (en) 2008-05-08
WO2002095322A1 (en) 2002-11-28
CN100334417C (en) 2007-08-29
US7073424B2 (en) 2006-07-11

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