EP0014661B1 - Device for the installation of a nuclear-reactor block in a vessel - Google Patents

Device for the installation of a nuclear-reactor block in a vessel Download PDF

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Publication number
EP0014661B1
EP0014661B1 EP80400188A EP80400188A EP0014661B1 EP 0014661 B1 EP0014661 B1 EP 0014661B1 EP 80400188 A EP80400188 A EP 80400188A EP 80400188 A EP80400188 A EP 80400188A EP 0014661 B1 EP0014661 B1 EP 0014661B1
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EP
European Patent Office
Prior art keywords
block
vessel
nuclear
chamber
parts
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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
Application number
EP80400188A
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German (de)
French (fr)
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EP0014661A1 (en
Inventor
Robert Pierart
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Alstom SA
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Alsthom Atlantique SA
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Priority to AT80400188T priority Critical patent/ATE3197T1/en
Publication of EP0014661A1 publication Critical patent/EP0014661A1/en
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Publication of EP0014661B1 publication Critical patent/EP0014661B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/02—Hulls assembled from prefabricated sub-units
    • B63B3/04—Hulls assembled from prefabricated sub-units with permanently-connected sub-units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks

Definitions

  • the present invention essentially relates to a device for installing a block forming a nuclear reactor in a ship.
  • the invention aims to facilitate this implementation. It relates to a device for installing a block forming a nuclear reactor in a ship, said ship being made of at least two prefabricated parts subsequently assembled end to end, one of the parts comprising a housing, one side of which is open for the introduction of said block before the assembly of said parts by substantially horizontal translation of said block from a barge, by rolling or sliding, characterized in that it comprises a temporary support which rests on the bottom of said housing and on which the block is deposited, and that using lifting means composed of a plurality of columns for guiding the block in vertical translation, said columns being provided at their upper part with jacks to which the block is suspended by cables or analogues, or momentarily raises said block, remove the temporary support through the opening in the housing, then lower the block to rest it in its final location on r the bottom of the aforementioned housing.
  • the reactor block 6 will be introduced by substantially horizontal translation into the housing 5 by sliding or rolling it on the barge until it reaches the support. 10 provided in housing 5, as can be seen in FIG.
  • jacks 13 are connected to the reactor unit 6, and more precisely to the base 8, by cables or the like 16 anchored at 17 to the base, as can be seen better in FIG. 12.
  • the cables can be constituted by a plurality of screwed segments having a head at one of their ends and passing through the bodies of jacks 13a in a manner known per se.
  • Such cables advantageously allow the lifting or lowering of the reactor block 6 in successive or stepwise steps.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Revetment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manipulator (AREA)

Abstract

PCT No. PCT/FR80/00020 Sec. 371 Date Oct. 7, 1980 Sec. 102(e) Date Sep. 22, 1980 PCT Filed Feb. 6, 1980 PCT Pub. No. WO80/01662 PCT Pub. Date Aug. 21, 1980.The invention relates to a method and an assembly for a equipping vessel propelled by nuclear power. In accordance with the invention, a vessel is made in two prefabricated parts (2,3) and a chamber (5) is provided in the part (2). A nuclear reactor block (6) is placed in said chamber before assembling the two parts. The invention applies to building diverse nuclear powered vessels such as ice-breakers for example.

Description

La présente invention a essentiellement pour objet un dispositif pour l'installation d'un bloc formant réacteur nucléaire dans un navire.The present invention essentially relates to a device for installing a block forming a nuclear reactor in a ship.

Jusqu'à récemment, les réacteurs nucléaires étaient construits directement à l'intérieur des navires, le montage s'effectuant, élément par élément, en utilisant les engins de levage habituels des chantiers de construction.Until recently, nuclear reactors were built directly inside ships, assembly being carried out, element by element, using the usual lifting devices on construction sites.

Certains des éléments constituaient des masses indivisibles de plusieurs centaines de tonnes. Il en résulte que l'on ne pouvait, pratiquement, envisager la construction d'un navire à propulsion nucléaire, que dans les quelconques chantiers disposant de moyens de levage exceptionnellement puissants.Some of the elements constituted indivisible masses of several hundred tonnes. It follows that one could, practically, consider the construction of a nuclear powered ship, that in any yards with exceptionally powerful lifting means.

En outre, une telle construction d'un réacteur nucléaire à bord d'un navire exigeait un très long délai et immobilisait la forme de construction du navire, pendant une période excessive, ce qui entraînait une désorganisation du programme de construction ainsi que des coûts prohibitifs.In addition, such a construction of a nuclear reactor on board a ship required a very long time and immobilized the form of construction of the ship, for an excessive period, which led to disorganization of the construction program as well as prohibitive costs. .

Enfin, les conditions de travail pour le montage du réacteur à bord du navire, notamment pour l'exécution des travaux en propreté nucléaire, ne pouvaient pas être réalisées de manière vraiment satisfaisante.Finally, the working conditions for mounting the reactor on board the ship, in particular for carrying out work in nuclear cleanliness, could not be really satisfactorily achieved.

C'est pourquoi selon un procédé connu il a été proposé de réaliser le navire en deux parties flottantes préfabriquées qui sont ultérieurement assemblées. L'une des parties comporte un logement dans lequel, avant l'assemblage des deux parties, on introduit par translation horizontale un bloc formant réacteur nucléaire. Un dispositif et un procédé pour l'installation d'un bloc moteur dans un navire (voir le préambule de la revendication 1 ) sont connus par les documents FR-A-2 397 322 et GB-A-2001 013 qui se correspondent. Compte tenu de l'encombrement et du poids du réacteur nucléaire (plusieurs milliers de tonnes) la mise en place de celui-ci est une opération complexe.This is why, according to a known method, it has been proposed to make the ship in two prefabricated floating parts which are subsequently assembled. One of the parts comprises a housing in which, before the assembly of the two parts, a block forming a nuclear reactor is introduced by horizontal translation. A device and a method for installing an engine block in a ship (see the preamble of claim 1) are known from documents FR-A-2 397 322 and GB-A-2001 013 which correspond. Given the size and weight of the nuclear reactor (several thousand tonnes), setting it up is a complex operation.

L'invention a pour but de faciliter cette mise en place. Elle a pour objet un dispositif pour l'installation d'un bloc formant réacteur nucléaire dans un navire, ledit navire étant réalisé en au moins deux parties préfabriquées ultérieurement assemblées bout à bout, l'une des parties comportant un logement, dont un côté est ouvert pour l'introduction dudit bloc avant l'assemblage desdites parties par translation sensiblement horizontale dudit bloc à partir d'une barge, par roulement ou glissement, caractérisé en ce qu'il comporte un support provisoire qui repose sur le fond dudit logement et sur lequel le bloc est déposé, et qu'à l'aide de moyens élévateurs composés d'une pluralité de colonnes de guidage du bloc en translation verticale, lesdites colonnes étant pourvues à leur partie supérieure de vérins auxquels le bloc est suspendu par des câbles ou analogues, ou soulève, momentanément, ledit bloc, on enlève le support provisoire à travers l'ouverture du logement, puis on descend le bloc pour le faire reposer à son emplacement définitif sur le fond du logement précité. Certaines caractéristiques d'un mode préféré de réalisation sont définies dans les revendications 2 et 3.The invention aims to facilitate this implementation. It relates to a device for installing a block forming a nuclear reactor in a ship, said ship being made of at least two prefabricated parts subsequently assembled end to end, one of the parts comprising a housing, one side of which is open for the introduction of said block before the assembly of said parts by substantially horizontal translation of said block from a barge, by rolling or sliding, characterized in that it comprises a temporary support which rests on the bottom of said housing and on which the block is deposited, and that using lifting means composed of a plurality of columns for guiding the block in vertical translation, said columns being provided at their upper part with jacks to which the block is suspended by cables or analogues, or momentarily raises said block, remove the temporary support through the opening in the housing, then lower the block to rest it in its final location on r the bottom of the aforementioned housing. Certain characteristics of a preferred embodiment are defined in claims 2 and 3.

L'invention sera décrite ci-après plus en détail à l'aide d'une exemple de réalisation et des dessins, dans lesquels:

  • - Les figures 1 à 9 illustrent schématiquement et dans l'ordre, en plan (figures 1, 8 et 9) et en élévation (figures 2 à 7), les différentes étapes de construction et d'aménagement d'un navire réalisé selon les principes de l'invention,
  • - La figure 10 est une vue schématique en élévation avec arrachement partiel de ce navire après achèvement de sa construction,
  • - La figure 11 est une vue de dessus du bloc réacteur muni de ses moyens élévateurs, et
  • - La figure 12 est une vue selon la flèche XII de la figure 11, montrant en élévation et partiellement une colonne équipée de vérins à sa partie supérieure.
The invention will be described below in more detail with the aid of an exemplary embodiment and the drawings, in which:
  • - Figures 1 to 9 illustrate schematically and in order, in plan (Figures 1, 8 and 9) and in elevation (Figures 2 to 7), the different stages of construction and layout of a ship made according to principles of the invention,
  • FIG. 10 is a diagrammatic elevation view with partial cutaway of this ship after completion of its construction,
  • FIG. 11 is a top view of the reactor unit fitted with its lifting means, and
  • - Figure 12 is a view along arrow XII of Figure 11, showing in elevation and partially a column equipped with jacks at its upper part.

Suivant un exemple de réalisation, et en se reportant notamment aux figures 1 à 10, l'installation d'un réacteur nucléaire dans un navire à propulsion nucléaire comprend les étapes suivantes:

  • Dans une forme de construction navale 1, on construit tout d'abord une coque de navire en deux parties, à savoir une partie avant 2 et une partie arrière 3, comme on le voit bien sur la figure 1. Dans la partie avant 2 qui repose dans la forme 1 par l'intermédiaire de tins 4, est ménagé un logement 5 destiné à recevoir un bloc formant réacteur ou chaudière nucléaire 6. Brièvement parlant, ce bloc 6 est constitué par une enveloppe 7 renfermant notamment une cuve et des générateurs de vapeur non représentés, ladite enveloppe 7 et son contenu étant supportés par un socle 8 auquel sont associés des moyens de déplacement non représentés.
According to an exemplary embodiment, and with particular reference to FIGS. 1 to 10, the installation of a nuclear reactor in a nuclear powered ship comprises the following steps:
  • In a form of shipbuilding 1, a ship's hull is first built in two parts, namely a front part 2 and a rear part 3, as can be seen in FIG. 1. In the front part 2 which rests in form 1 by means of tins 4, is provided a housing 5 intended to receive a block forming a nuclear reactor or boiler 6. Briefly speaking, this block 6 is constituted by an envelope 7 containing in particular a tank and generators of steam not shown, said envelope 7 and its contents being supported by a base 8 with which displacement means (not shown) are associated.

Comme on le voit clairement sur la figure 2, le bloc réacteur 6 est transporté jusqu'au voisinage et sensiblement au niveau du logement 5 au moyen d'une barge 9 introduite dans la forme 1 qui a été préalablement mise en eau. Il convient de noter ici qu'on a disposé dans le logement 5 un support provisoire 10 du bloc réacteur 6, lequel support peut être constitué par exemple par des longrines, cales ou analogues. Ce support 10 est indispensable en ce qu'il permet de rattraper la différence de niveau existant entre le plancher de la barge 9 et le logement 5.As can be clearly seen in FIG. 2, the reactor block 6 is transported to the vicinity and substantially at the level of the housing 5 by means of a barge 9 introduced in the form 1 which has been previously impounded. It should be noted here that there is disposed in the housing 5 a temporary support 10 of the reactor block 6, which support may be constituted for example by sills, wedges or the like. This support 10 is essential in that it makes it possible to make up for the difference in level existing between the floor of the barge 9 and the housing 5.

Ainsi, on introduira par translation sensiblement horizontale le bloc réacteur 6 dans le logement 5 en le faisant glisser ou rouler sur la barge jusqu'à ce qu'il parvienne sur le support 10 prévu dans le logement 5, comme on le voit bien sur la figure 2.Thus, the reactor block 6 will be introduced by substantially horizontal translation into the housing 5 by sliding or rolling it on the barge until it reaches the support. 10 provided in housing 5, as can be seen in FIG.

Cette introduction étant réalisée, on enlève la barge 9 et, comme il apparait sur la figure 3, on amène, au moyen de grues ou analogues des moyens élévateurs 11 du bloc 6 à proximité immédiate de celui-ci, puis on relie le bloc à ces moyens élévateurs. Plus précisement, les moyens élévateurs 11 qui seront décrits ultérieurement en détail en se reportant aux figures 11 et 12, comprennent essentiellement des colonnes de guidage 12 du bloc 6 en translation verticale, lesdites colonnes étant pourvues à leur partie supérieure de vérins 13 auxquels le bloc 6 peut être suspendu.This introduction being carried out, the barge 9 is removed and, as it appears in FIG. 3, it is brought, by cranes or the like, lifting means 11 of the block 6 in the immediate vicinity thereof, then connects the block to these lifting means. More precisely, the lifting means 11 which will be described later in detail with reference to FIGS. 11 and 12, essentially comprise guide columns 12 of the block 6 in vertical translation, said columns being provided at their upper part with jacks 13 to which the block 6 can be suspended.

Comme on le voir sur la figure 3, les colonnes de guidage 12 sont enfilées dans le socle 8 du bloc réacteur 6 et prennent appui sur le plancher du logement 5.As can be seen in FIG. 3, the guide columns 12 are threaded into the base 8 of the reactor block 6 and bear on the floor of the housing 5.

Ainsi, par commande des vérins 13, le bloc 6 peut être momentanément soulevé le long des colonnes 12, comme on le voit sur la figure 4, ce qui permet l'évacuation du support provisoire 10, comme cela est visible sur la figure 5.Thus, by controlling the jacks 13, the block 6 can be momentarily lifted along the columns 12, as seen in FIG. 4, which allows the temporary support 10 to be evacuated, as can be seen in FIG. 5.

Comme on le voit sur la figure 6, le bloc réacteur est ensuite redescendu le long des colonnes de guidage 12, de façon qu'il repose sur son emplacement définitif dans le logement 5. Et, comme il apparait sur la figure 7, on évacue les moyens élévateurs 11 qui avaient été installés provisoirement de la façon décrite ci-avant.As seen in Figure 6, the reactor unit is then lowered along the guide columns 12, so that it rests on its final location in the housing 5. And, as it appears in Figure 7, we evacuate the elevating means 11 which had been provisionally installed in the manner described above.

Le bloc réacteur 6 étant ainsi définitivement en place dans la partie avant du navire, on sort cette dernière de la forme 1 (figure 8), on la retourne, et on la réintroduit dans ladite forme pour réaliser ensuite l'assemblage bout à bout de la partie avant 2 avec la partie arrière 3 comme il apparait sur la figure 9. Et on obtient finalement un navire tel que celui montré sur la figure 10.The reactor block 6 is thus definitively in place in the forward part of the ship, the latter is removed from form 1 (FIG. 8), it is turned over, and it is reintroduced into said form in order to then carry out the end-to-end assembly of the front part 2 with the rear part 3 as it appears in figure 9. And one finally obtains a ship such as that shown in figure 10.

On ne décrira pas ici en détail les diverses opérations de construction et de raboutage les deux parties du navire ni même les travaux annexes exigés par la présence du bloc réacteur et qui peuvent être menés parallèlement aux opérations de construction proprement dites, car, encore une fois, la présente invention vise essentiellement l'introduction du bloc par translation horizontale dans un logement et l'une des parties du navire et son installation dans ce logement.We will not describe here in detail the various construction and splicing operations of the two parts of the ship or even the ancillary works required by the presence of the reactor block and which can be carried out in parallel with the actual construction operations, because, once again , the present invention essentially relates to the introduction of the block by horizontal translation in a housing and one of the parts of the ship and its installation in this housing.

A ce propos, on a montré à plus grande échelle sur les figures 11 et 12 les moyens élévateurs amovibles 11 permettant la translation verticale du bloc réacteur 6 dans son logement pour assurer son installation définitive.In this regard, we have shown on a larger scale in Figures 11 and 12 the removable elevating means 11 allowing the vertical translation of the reactor block 6 in its housing to ensure its final installation.

Suivant l'exemple de réalisation représenté sur ces figures, ces moyens élévateurs sont au nombre de quatre et comportent par conséquent quatre colonnes de guidage 12 qui sont enfilées dans des ouvertures traversantes 14 ménagées aux quatre coins du socle 8 du bloc réacteur 6. Comme on le voit bien sur le's figures 11 et 12, les colonnes 12 sont, à leur partie supérieure, solidaires d'une plate-forme 15 qui supporte les vérins 13 dont on a montré schématiquement en 13a les corps, et en 13b les groupes hydrauliques.According to the embodiment shown in these figures, these lifting means are four in number and therefore comprise four guide columns 12 which are threaded through through openings 14 formed at the four corners of the base 8 of the reactor block 6. As we clearly seen in the's Figures 11 and 12, the columns 12 are, at their upper part, integral with a platform 15 which supports the jacks 13 which have been shown schematically in 13a the bodies, and in 13b the hydraulic groups.

Ces vérins 13 sont réliés au bloc réacteur 6, et plus précisément au socle 8, par des câbles ou analogues 16 ancrés en 17 au socle, comme on le voit mieux sur la figure 12.These jacks 13 are connected to the reactor unit 6, and more precisely to the base 8, by cables or the like 16 anchored at 17 to the base, as can be seen better in FIG. 12.

Les câbles peuvent être constitués par une pluralité de segments vissés comportant une tête à l'une de leurs extrémités et passant au travers des corps de vérins 13a d'une manière connue en soi. Ainsi, de tels câbles permettent avantageusement le soulèvement ou la descente du bloc réacteur 6 par étapes successives ou pas à pas.The cables can be constituted by a plurality of screwed segments having a head at one of their ends and passing through the bodies of jacks 13a in a manner known per se. Thus, such cables advantageously allow the lifting or lowering of the reactor block 6 in successive or stepwise steps.

On a montré en 18 sur la figure 12 une passerelle protégeant l'opérateur qui ainsi peut travailler en toute sécurité au voisinage des vérins 13. Enfin, on a prévu selon l'invention, et comme il apparait sur la figure 11, des passerelles de liaison 19 entre les quatre moyens élévateurs 11.We have shown at 18 in FIG. 12 a gangway protecting the operator who can thus work in complete safety in the vicinity of the jacks 13. Finally, we have provided according to the invention, and as it appears in FIG. 11, gangways of connection 19 between the four lifting means 11.

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné au'à titre d'exemple.Of course, the invention is in no way limited to the embodiment described and illustrated which has not been given by way of example.

C'est ainsi qu'il est parfaitement possible d'appliquer les principes de l'invention, sans sortir du cadre de celle-ci, en adoptant une séquence de construction du navire autre que celle qui a été décrite ci-avant. Il est également possible d'appliquer l'invention à la construction d'une centrale nulcéaire sur barge.Thus it is perfectly possible to apply the principles of the invention, without departing from the scope thereof, by adopting a construction sequence of the ship other than that which has been described above. It is also possible to apply the invention to the construction of a nuclear power station on a barge.

Par ailleurs, on peut très bien, sans sortir du cadre de l'invention introduire le bloc réacteur latéralement dans un navire en construction dans une forme ou sur une cale de chanter naval.Furthermore, it is very well, without departing from the scope of the invention, to introduce the reactor unit laterally into a ship under construction in the form or on a hold of naval singing.

Claims (3)

1. A device for installing a nuclear reactor block in a vessel (2, 3), said vessel being built in at least two prefabricated parts (2, 3) which are then assembled end to end, one of the parts (2) including a chamber (5), one side of which is open for the introduction of said block (6) before said parts are assembled by a substantially horizontal translation movement of said block from a barque (9) by rolling or sliding, characterized in that it comprises a temporary support situated on the bottom of said chamber and on which said block is placed, and that by means of hoisting means (11) composed of a plurality of guide columns (12) for guiding the block (6) in a vertical translation movement, the tops of said columns being provided with jacks (13) from which said block (6) is suspended by cables (16) or the like, said block is raised momentarily to remove the temporary support (10) through the opening of the chamber (5), then the block is lowered to make it rest in its final position at the bottom of the aforementioned chamber (5).
2. A device according to claim 1, characterized in that the tops of the aforementioned columns (12) are integral with a platform (15) which supports the aforementioned jacks (13).
3. A device according to any one of the previous claims, characterized in that the aforementioned block (6) includes a stand (8) provided with through orifices (14) in which the aforementioned columns (12) are inserted.
EP80400188A 1979-02-07 1980-02-06 Device for the installation of a nuclear-reactor block in a vessel Expired EP0014661B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400188T ATE3197T1 (en) 1979-02-07 1980-02-06 DEVICE FOR INSTALLATION OF A NUCLEAR REACTOR BLOCK IN A SHIP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7903088A FR2448476A1 (en) 1979-02-07 1979-02-07 METHOD FOR CONSTRUCTING AND FITTING A NUCLEAR PROPELLED VESSEL AND DEVICE FOR CARRYING OUT SAID METHOD
FR7903088 1979-02-07

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EP0014661A1 EP0014661A1 (en) 1980-08-20
EP0014661B1 true EP0014661B1 (en) 1983-05-04

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US (1) US4398484A (en)
EP (1) EP0014661B1 (en)
JP (1) JPS56500171A (en)
AT (1) ATE3197T1 (en)
CA (1) CA1132729A (en)
DE (1) DE3062920D1 (en)
ES (1) ES8102952A1 (en)
FR (1) FR2448476A1 (en)
WO (1) WO1980001662A1 (en)

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ATE3197T1 (en) 1983-05-15
WO1980001662A1 (en) 1980-08-21
CA1132729A (en) 1982-09-28
ES488300A0 (en) 1981-02-16
DE3062920D1 (en) 1983-06-09
ES8102952A1 (en) 1981-02-16
JPS56500171A (en) 1981-02-19
FR2448476A1 (en) 1980-09-05
FR2448476B1 (en) 1982-02-05
EP0014661A1 (en) 1980-08-20
US4398484A (en) 1983-08-16

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