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Silverblatt, B.L.
Westinghouse Electric Corp., Pittsburgh, PA (USA)1977
Westinghouse Electric Corp., Pittsburgh, PA (USA)1977
AbstractAbstract
[en] The invention concerns a nuclear reactor of the type with a vessel, a vessel head carried at the top of this vessel by a core cylinder comprising a flange internally supported by the vessel, and an upper support structure supported between the core cylinder flange and the vessel head to align laterally the head, vessel, flange and support structure. A bottom key device is provided for lining up the flange, support structure and vessel, and an upper key device for laterally lining up support structure and the vessel head and for maintaining this alignment when they are removed simultaneously from the core cylinder and vessel. When re-assembling the reactor, the top support structure and the vessel head are lowered simultaneously so that an opening in the top alignment structure engages in the upper extension of the bottom alignment structure. A plurality of alignment stuctures may be utilised round the circumference of the reactor vessel. The disposition of the invention also facilitates the removal of the core cylinder from the reactor vessel. In this way, the alignment on re-assembly is ensured by the re-entry of the bottom extension under the flange of the core cylinder with the groove or keyway of the reactor vessel
[fr]
L'invention concerne un reacteur nucleaire du type ayant une cuve, une tete de cuve supportee au sommet de cette cuve, par un cylindre de coeur comportant une bride supportee interieurement par la cuve, et une structure de support superieure supportee entre la bride du cylindre de coeur et la tete de cuve pour aligner lateralement la tete, la cuve, la bride et la structure de support. Un dispositif inferieur a clavette est prevu pour aligner la bride, la structure de support et la cuve, et un dispositif superieur a clayette pour aligner lateralement la structure de support et la tete de cuve et maintenir cet alignement pendant leur enlevement simultane du cylindre de coeur et de la cuve. Pour reassembler le reacteur, la structure de support superieure et la tete de cuve sont simultanement abaissees de facon qu'une ouverture de la structure d'alignement superieure soit engagee sur l'extension superieure de la structure d'alignement inferieure. Une pluralite de structures d'alignement peuvent etre utilisees le long de la circonference de la cuve de reacteur. L'agencement de l'invention facilite aussi l'enlevement du cylindre de coeur de la cuve de reacteur. Dans de telles conditions, l'alignement sur reassemblage est asssure par reengagement de l'extension inferieure d'en dessous de la bride du cylindre de coeur avec la rainure ou chemin de passage de clavette de la cuve de reacteurOriginal Title
Dispositif d'alignement pour structures internes de cuve de reacteur nucleaire
Primary Subject
Source
13 Oct 1977; 11 p; FR PATENT DOCUMENT 2368118/A/; Available from Institut National de la Propriete Industrielle, Paris (France); Priority claim: 18 Oct 1976, US.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Pierart, Robert.
Societe Financiere et Industrielle des Ateliers et Chantiers de Bretagne, 75 - Paris (France)1980
Societe Financiere et Industrielle des Ateliers et Chantiers de Bretagne, 75 - Paris (France)1980
AbstractAbstract
[en] This invention essentially concerns a trunnion support acting as a bearing intended, in particular, for supporting a nuclear reactor vessel in a metal structure
[fr]
La presente invention a essentiellement pour objet un support de tourillon formant palier destine en particulier a supporter une cuve de reacteur nucleaire dans une structure metalliqueOriginal Title
Support de tourillon formant palier et chaudiere nucleaire utilisant un tel support
Primary Subject
Source
28 Nov 1980; 9 p; FR PATENT DOCUMENT 2455694/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Sepelak, G.R.
Westinghouse Electric Corp., Pittsburgh, Pa. (USA)1976
Westinghouse Electric Corp., Pittsburgh, Pa. (USA)1976
AbstractAbstract
[en] This invention concerns the creation of a reactor vessel support that does away at low cost with the fitting of seals. This support includes a vessel closure system structure, the vessel being fitted with a peripheral flange, to be maintained by the wall of a container, surrounding the vessel radially, as well as a support ring fitted to the flange and supported by the edge of the container. The support ring and the plug structure are directly connected to the upper surface of the vessel flange
[fr]
La presente invention a pour but de creer un support de cuve de reacteur, qui supprime de facon peu onereuse le montage des joints d'etancheite. Ce support comprend une structure de bouchon fermant la cuve, cette cuve ayant une bride a sa peripherie, pour etre maintenue par une paroi d'un conteneur, entourant radialement la cuve, ainsi qu'un anneau de support monte sur la bride et porte par le bord du conteneur. L'anneau de support et la structure de bouchon sont relies directement a la surface superieure de la bride de la cuveOriginal Title
Support de reacteur nucleaire
Primary Subject
Source
30 Mar 1976; 8 p; FR PATENT DOCUMENT 2309017/A/; Available from Institut National de la Propriete Industrielle, Paris (France); Priority claim: 25 Apr 1975, US.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Schuster, R.M.; Luria, N.G.
CEA, 75 - Paris (France)1977
CEA, 75 - Paris (France)1977
AbstractAbstract
[en] This invention concerns an electric crossover that makes a steam and pressure-tight seal for a conductor crossing two separate walls of a nuclear reactor vessel that seismic tremors or thermal expansion of the walls and conductor subject to relative displacements. The conductors, that have to cross the vessels, are fixed to the walls of the vessel in crossover systems fitted in crossover channels made in the walls of the vessel on their initial manufacture. The separate walls of the vessel move independently when they undergo an earth tremor or a temperature change between the walls or between the conductor. This shift can damage the conductor or the crossover system and this could give rise to cause steam or other materials to leak in the reactor should leaks occur in the primary system. Furthermore, in the case of medium or high power conductors, which are relatively rigid, the non-alignment of the crossover channels can bring about awkward stresses in the conductors or their protective sheathing. The aims of this invention are fulfilled by designing an electric crossover to pass at least one conductor through the two separate walls of a vessels, that includes an initial sub-assembly crossover, secured in a leak-tight manner to the first wall and a second sub-sessembly crossover in sliding or rolling contact with the second wall, whilst forming a leak-tight seal with it
[fr]
La presente invention concerne un dispositif de traversee electrique qui realise un joint etanche a la vapeur et la pression pour conducteur qui traverse les deux parois independantes d'une enceinte de reacteur nucleaire que des secousses sismiques ou la dilatation thermique des parois et du conducteur soumettent a un deplacement relatif. On fixe les conducteurs, qui doivent traverser l'enceinte, aux parois de l'enceinte dans des dispositifs de traversee montes dans des buses de traversee realisees dans les parois de l'enceinte pendant leur fabrication initiale. Les parois independantes de l'enceinte se deplacent de facon independante. Lorsqu'elles sont soumises a une secousse sismique ou une variation de temperature entre les parois ou entre les parois et le conducteur. Ce deplacement peut causer des dommages au conducteur ou au dispositif de traversee et il pourrait en resulter une fuite de vapeur et d'autres materiaux au reacteur en cas de fuites dans le systeme primaire. D'autre part, dans le cas de conducteurs de puissance moyenne ou elevee, qui sont relativement rigides, le non-alignement des buses de traversee peut creer des contraintes genantes sur les conducteurs ou sur leur enveloppe protectrice. On atteint les buts de la presente invention en realisant un dispositif de traversee electrique pour faire passer au moins un conducteur a travers les deux parois independantes d'une enceinte qui comporte un premier sous-ensemble de traversee, fixe de facon etanche a la premiere paroi, et un deuxieme sous-ensemble de traversee en contact glissant ou roulant avec la deuxieme paroi, tout en formant un joint etanche avec celle-ciOriginal Title
Dispositif de traversee electrique
Primary Subject
Source
26 Sep 1977; 21 p; FR PATENT DOCUMENT 2365903/A/; Available from Institut National de la Propriete Industrielle, Paris (France); Priority claim: 27 Sep 1976, US.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] In Petten the Nuclear Structure Group uses neutron radiative capture as a tool for the study of bound and unbound states. Neutron rich nuclei provide a testing ground for physical theories and are relevant for nuclear applications. Moreover, neutron beams do not heat the target and therefore work with polarized target nuclei is feasible. In this paper: a slightly modified text of a video presentation: it will be shown how replacement of the reactor vessel was involving our group
Primary Subject
Source
Capture gamma-ray spectroscopy conference; Knoxville, TN (USA); 10-14 Sep 1984; CONF-840906--
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Farmer, R.C.; Goldsmith, H.A.; Proudlove, M.J.
Nuclear Power Co. (Whetstone) Ltd. (UK)1981
Nuclear Power Co. (Whetstone) Ltd. (UK)1981
AbstractAbstract
[en] This invention concerns suction pads for supporting loads. Specifically, the suction pad is part of a pair of pads located at the ends of a bridge forming a vehicle for transporting instruments for the non-destructive testing of a large vessel intended to contain a fuel assembly for a nuclear reactor immersed in a liquid metal coolant. For example, the vehicle is of the type described in the French patent application filed this day under the heading 'Vehicle for transporting instruments for testing against a wall'
[fr]
Plus precisement, le patin d'aspiration fait partie d'une paire de patins places aux extremites d'un pont formant un vehicule de transport d'instruments de controle par essais non-destructifs d'une cuve de grande dimension destinee a contenir un ensemble combustible de reacteur nucleaire immerge dans un metal liquide de refroidissement. Le vehicule est par exemple du type decrit dans la demande de brevet francais deposee ce jour sous le titre 'Vehicule de transport d'instruments de controle contre une paroi'Original Title
Patin de maintien d'une charge contre une surface par aspiration
Primary Subject
Source
13 Feb 1981; 9 p; FR PATENT DOCUMENT 2462649/A/; Available from Institut National de la Propriete Industrielle, Paris (France); Priority claim: 25 Jul 1979, GB.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A quick-acting stud tensioner apparatus for enabling the loosening or tightening of a stud nut on a reactor vessel stud. The apparatus is adapted to engage the vessel stud by closing a gripper around an upper end of the vessel stud when the apparatus is seated on the stud. Upon lifting the apparatus, the gripper releases the vessel stud so that the apparatus can be removed
Primary Subject
Source
8 Jan 1982; 18 p; ZA PATENT DOCUMENT 82/0132/A/; Available from Patents Office, Private Bag X400, Pretoria, 0001; Priority 29 January 1981 United States. No. 229,362.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
American Nuclear Society annual meeting; Los Angeles, CA (USA); 6 - 11 Jun 1982; CONF-820609--; Published in summary form only.
Record Type
Journal Article
Literature Type
Conference
Journal
Transactions of the American Nuclear Society; ISSN 0003-018X; 
; v. 41 p. 257-258
; v. 41 p. 257-258
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The invention relates to an automatic device for tightening a nut onto a stud, with special reference to the upper tensioning nut of studs for joining a cover of reactor vessel
[fr]
La presente invention a pour objet un dispositif automatique de vissage d'un ecrou sur un goujon et en particulier d'un ecrou superieur de mise sous tension d'un goujon de fixation du couvercle d'une cuve de reacteur nucleaireOriginal Title
Dispositif automatique de vissage d'un ecrou et procede de mise en oeuvre
Primary Subject
Source
25 Apr 1980; 14 p; FR PATENT DOCUMENT 2437680/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] An arrangement for inspecting a reactor vessel immersed in a water-filled tank comprises a mast carriage which is arranged for movement around the opening of a reactor vessel and which has fixedly connected thereto a mast which carries a track means on which inspection apparatus can be driven. To render it unnecessary to lift the mast carriage and mast into the reactor hall when, for example, replacing inspection apparatus, there is arranged, in accordance with the invention, on the upper end of the mast a docking unit which is provided with a second track means connecting with the first track means. A carriage supporting the inspection apparatus can be driven onto the second track means. Guide means are arranged between the docking unit and the mast, and guide ropes for guiding the docking unit, which is provided with a buoyant body, up to the surface of the tank and to guide and pull the docking unit back to its working position on the mast top
Primary Subject
Source
26 Feb 1985; v p; US PATENT DOCUMENT 4,501,716/A/; U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50; PAT-APPL-376998.
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
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