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Novatome Patents
Assignee:
Novatome
Address:
Courbevoie, FR
No. of patents:
44
Patents:












Patent Number Title Of Patent Date Issued
5013521 Internal shell of a fast-neutron nuclear reactor comprising a thermal protection device May 7, 1991
The internal shell (6) of the nuclear reactor comprises at least one cylindrical sleeve (10) with a vertical axis. An annular enclosure (20) is arranged on the internal periphery of the cylindrical sleeve (10), at the top part thereof. The enclosure (20) is open upwards and delimited by
4960152 Device for compensating by supplying a measured amount of fluid and its application for replenis October 2, 1990
The device includes a main receptacle (1) having an overflow pipe (2) and a secondary receptacle (9) mounted so as to be freely movable in the vertical direction inside the main receptacle (1). The inner space of the secondary receptacle (9) communicates with a drainage pipe (8) for flui
4927597 Device for cooling the main vessel of a fast neutron nuclear reactor cooled by a liquid metal May 22, 1990
The upper part of the vessel (3) is cooled as a result of the circulation of cooled sodium (27). The cooled sodium coming form the lower part of the reactor core is introduced into a first collector (15) via pipes (17) and then overflows into a second collector (16). The second collector
4851186 Nuclear reactor core and process for charging said core July 25, 1989
The core is constituted by detachable assemblies (21) disposed vertically and maintained in position by a support or bolster (22) receiving the lower part or foot (21a) of the assemblies (21) inside sleeves having a vertical axis (25). Each of the sleeves (25) includes at least one o
4832904 Emergency cooling device for a fast neutron nuclear reactor May 23, 1989
The cooling device comprises a heat exchanger (7) immersed in the hot header (4) of the nuclear reactor vessel, a substantially vertical tubular conduit (14) passing through the stepped wall (2) vertically below the exchanger (7), a bell (16) fixed under the exchanger (7) in the extensio
4828788 Support device for a discharge tank associated with a suspended pump of a nuclear reactor May 9, 1989
The pump (8) comprises a vertical body (8a) and a discharge sphere (10) in its lower part. Discharge pipes (14) are connected to the sphere (10). The sphere (10) is suspended from the plating (4) of the reactor through a flexible metal strip (20). The sphere (10) is connected to the stri
4803041 Process for the recycling of nuclear fuel pellets previously irradiated in a fast neutron nuclea February 7, 1989
In order to multiply by three or four the combustion level of nuclear fuel pellets in fast neutron nuclear reactors, it is proposed that following a normal irradiation period of said pellets in the reactor core, that the irradiated can be replaced by a new can with an internal diameter s
4786464 Cover plug of the core of a fast neutron nuclear reactor November 22, 1988
The cover plug (4) comprises a cylindrical barrel (8), a support plate (10), a group of vertical tubes (12) for the control rods and for the instrumentation of the core, an apertured transverse plate (28) fixed to the lower end of the barrel (8) and a transverse deflection plate (32)
4786463 Emergency heat exchanger for cooling the primary fluid of a nuclear reactor, and a process for a November 22, 1988
A liquid metal cooled pool type nuclear reactor incorporates an emergency heat exchanger having a novel geometry. The heat exchanger comprises circular and annular tube plates coaxially aligned. The tube bundle has a vertical straight part connected to the central tube plate, a bent
4738698 Finned liquid particles separator April 19, 1988
A separator disposed in parallel relationship is provided for separating liquid particles entrained in a gas stream. It comprises zigzag walls (25) having fins (27) each covering each of the convex folds (28) of the walls while forming an open scoop (29) facing the gas flow. Each fin has
4730493 Process and device for ultrasonic detection of gas bubbles in a liquid metal March 15, 1988
An ultrasonic beam is sent into liquid metal from a transmitting point (3) outside the enclosure (1) containing the liquid metal, the beam is detected outside the enclosure (1) after it has passed through the liquid metal, the amplitude of the ultrasonic waves detected is compared with t
4724799 Steam generator in which the heat-carrying fluid is a liquid metal and the detection of leakages February 16, 1988
A steam generator in which the heat-carrying fluid is a liquid metal and the detection of leakages is carried out by sampling the liquid metal. The end of the steam generator through which the liquid metal enters comprises a tube plate (2), a thermal protection plate (10) and a hollow fl
4714229 Anti-vibratory support device for a pipe whose thickness is small relative to the diameter December 22, 1987
Anti-vibratory support device for a pipe whose thickness is small relative to its diameter, comprising a collar (2) formed by at least two rigid annular sectors (2a, 2b, 2c) which are articulated at at least one of their ends to the succeeding sector, to pivot about an axis parallel to
4713214 Device for purifying liquid metal coolant for a fast neutron nuclear reactor December 15, 1987
Device for purifying liquid metal coolant for a fast neutron nuclear reactor, comprising a pump (6) for circulating the liquid metal, the metal then being purified and heated after purification, as well as a filter (24) of metallic fibers. It consists of an assembly of annular chambers
4694864 Double-wall tube for a heat exchanger September 22, 1987
A double-wall tube for a heat exchanger and method for producing same, the tube being formed by two tubular walls (1, 2) mounted one inside the other with a very small clearance (3)and then made to have a tight fit therebetween, the outer surface of the inner wall (2) and the inner s
4676947 Device for thermal protection of a component of a fast-neutron nuclear reactor June 30, 1987
The invention relates to a device for thermal protection of a component of a fast-neutron nuclear reactor consisting of at least one shell (10, 11) of a diameter smaller than the diameter of the passage (2) for the component (4) but greater than the diameter of the component (4). The
4639350 Cover-plug for the core of a fast neutron nuclear reactor January 27, 1987
Cover-plug for the core of a fast neutron nuclear reactor, comprising a support-plate (6), a cylindrical shell (8) having a vertical axis fixed integrally to the support plate (6) and braces (14) which are transverse relative to the shell (8). Vertical tubes fixed to the support plate (6
4624217 Steam generators having a central body of the sodium-water type November 25, 1986
According to the invention, the central body (10) of the steam generator filled with liquid sodium in its upper and middle part comprises in its lower part, on one hand, a crowned end wall (23) under which an inert gas is injected for forming a pocket (24) which contains a small volume o
4612976 Steam generator for a nuclear reactor cooled with liquid metal September 23, 1986
A steam generator for a nuclear reactor cooled with liquid metal, comprising a bundle consisting of double-walled tubes (20) arranged inside an enclosure in which the liquid metal circulates. The tubes (20) which are substantially straight and directed in the axial direction of the s
4600554 Secondary heat transfer circuit for a nuclear reactor cooled by a liquid metal such as sodium, a July 15, 1986
The invention relates to a secondary heat transfer circuit for a liquid metal-cooled nuclear reactor, as well as to a steam generator which can be used in such a circuit.According to the invention, a downstream buffer tank and an upstream buffer tank are arranged within the steam generat
4592888 Device for emergency removal of the heat dissipated by a fast breeder nuclear reactor when shut June 3, 1986
Device for the emergency removal of the heat dissipated by a fast breeder nuclear reactor when shut down, comprising a liquid-liquid heat exchanger immersed in the vessel of the reactor and a liquid-air exchanger for the cooling of the secondary liquid of the latter exchanger. The liquid
4587081 Slab for closing the vessel of a fast neutron nuclear reactor May 6, 1986
Slab for closing a fast neutron nuclear reactor, comprising a first central annular part (10) the diameter of which is substantially equal to the diameter of the reactor vessel (5) and a second peripheral annular part (11) connected to the first part (10) by its outer shell (14). Both pa
4585058 Heat exchanger having a bundle of straight tubes April 29, 1986
Heat exchanger comprising a bundle (35) with straight vertical tubes, whose inner wall serves as the entry duct (46) for the fluid to be heated. This inner wall consists of a first shell (45) having a vertical axis, welded to the lower tube plate (39), a second shell (46) coaxial with th
4560530 Device for providing protection against heat and radiation for an intermediate heat exchanger im December 24, 1985
A device for providing protection against heat and radiation for an intermediate heat exchanger immersed in the vessel of a nuclear reactor. In its upper part, the exchanger has an inner sleeve (8a) inside which a liquid metal circulates, and an outer sleeve (8b), these sleeves being
4552210 Device for producing steam by heat exchange between a heat-transfer liquid metal and feed water November 12, 1985
Device for producing steam by heat exchange between a heat-transfer liquid metal and feed water, comprising a cylindrical casing (31) receiving liquid metal in its upper part through at least one nozzle (35, 36). The liquid metal enters in a space bounded by a central sleeve (38), a lowe
4550688 Steam outlet connection for a steam generator November 5, 1985
Steam outlet connection for connecting the outlet (5) of a tube of the bank of tubes of a steam generator to the pipe (8) connecting it to a steam header. The connection is of the T type with a straight portion (10) closed at one end and a side branch (19) connected to the pipe (8). The
4534140 Annular slab for closing the vessel of a fast neutron nuclear reactor August 13, 1985
Annular slab for closing the vessel of a fast nuclear reactor, comprising at least one downwardly divergent frusto-conical sleeve coaxial with the inner and outer sleeves delimiting the slab, dividing the slab envelope into upper and lower parts respectively filled with concrete incorpor
4517153 Device for removing cooling fluid, making it possible to locate defective arrays in a nuclear re May 14, 1985
Device for removing cooling fluid and for locating defective fuel arrays in a nuclear reactor in operation by detection of fission products in the cooling fluid. The device consists of at least two independent locating modules (12, 14) and of sampling pipes (17, 24) associated with each
4515109 Apparatus for the production of steam by heat exchange between a heat-transfer liquid metal and May 7, 1985
Apparatus for the production of steam by heat-exchange between a heat-transfer liquid metal and feed-water, comprising an envelope (1) containing a tube bundle (8) which occupies only part of the internal volume of the envelope with the bundle (8) in which the feed water is passed in
4495138 Junction device between the delivery duct of a primary pump and a duct joined to the core suppor January 22, 1985
A junction device between the delivery duct of a primary pump and a duct joined to the core support of a liquid metal cooled fast neutron nuclear reactor comprises a frusto-conical sleeve (6) widening out towards the inlet (2) of the duct joined to the core support, a connecting member (
4477410 Device for cooling the main vessel of a fast fission nuclear reactor October 16, 1984
The annular space (19) delimited by the main vessel (3) and an internal shell (16) is in communication with the zone (15) of the reactor vessel, in which the cold primary liquid is located. The annular space (20) delimited by the shell (16) and by an internal shell (17) is in communi
4469051 Emergency shut-off device, in case of leakage of a steam generator tube September 4, 1984
The invention relates to an emergency shut-off device, in the case of leakage, of a tube of a steam generator where the heat of vaporization is contributed by a liquid metal circulating in contact with the outer surface of the tube. The device includes on the terminal portion of the
4443403 Apparatus for loading and unloading fuel assemblies for a fast neutron nuclear reactor April 17, 1984
Apparatus for loading and unloading fuel assemblies, for fast neutron nuclear reactors, and in particular for groups of fast neutron nuclear reactors cooled by liquid sodium located on one and the same site. The apparatus is removable as a unit and comprises a lock chamber (25) in the
4440718 Fuel assembly transfer device for breeder nuclear reactor April 3, 1984
A dismountable and movable device for the transfer of fuel assemblies for a breeder nuclear reactor, comprising a platform (11) mounted for rotation on a support (12) resting on the structure of the reactor. The platform is provided with apertures (19, 20) and carries a hopper (23) which
4404292 Refractory material intended especially for contacting molten aluminum and process for its manuf September 13, 1983
A refractory material and the process for its manufacture, designed particularly for contacting molten aluminum. The material is composed of an aggregate constituted by silicon nitride, and a binder. Preferably, the silicon nitride enters into the composition of the material in a pro
4403500 Apparatus for measuring a parameter relating to at least one substance possibly present in one o September 13, 1983
Apparatus for measuring a parameter relating to at least one substance possibly present in at least one chamber of a set of measurement chambers kept under very low residual pressure. The chambers (12) are connected, on the one hand to a single vacuum pump installation (14), by low condu
4397811 Nuclear reactor with integral heat exchangers August 9, 1983
A nuclear reactor having integral heat exchangers comprises intermediate heat exchangers (35) which are entirely contained within the reactor vessel (1) and bear on the support (4) for the reactor core (5) at the periphery of the latter. Each one of the intermediate heat exchangers (35)
4377552 Nuclear reactor exchanger March 22, 1983
Nuclear reactor exchanger which assures the transfer of heat between two streams of coolant sodium. It includes an outlet connector which channels coolant sodium leaving a bundle of exchanger tubes traversed on the inside by the sodium and immersed externally in coolant sodium, and an in
4364713 Electromagnetic conduction-pump for liquid metal December 21, 1982
An electromagnetic conduction pump for liquid metal, including a part of refractory material; two magnetic circuits each including a horizontal arm embedded in the refractory material, the first having a gap and the other being closed; a rising channel arranged in the refractory material
4363777 Closure element for limiting the convection currents in an annular space about a nuclear reactor December 14, 1982
The apparatus comprises an annular cup (5) solid with the component (1) and surrounding its outer wall, a frusto-conical support surface (9) having as axis the vertical axis (2) of the component (1) fixed at the perimeter of its large base to the passage (4) into which the component (1)
4335883 Sealing device for a component vertically disposed within the primary vessel of a nuclear reacto June 22, 1982
The device is constituted by a seal-bearing ring 21 disposed about the flange 2 of the component 5 and resting on the plate 1 of the reactor, having a first set of annular seals 26,27 ensuring sealing between the inner side surface of the seal-bearing ring 21 and the outer side surface
4286926 Conduction pump for liquid metal September 1, 1981
The invention relates to a conduction pump for liquid metal.This pump comprises a magnetic circuit for creating a magnetic field in the stream of liquid metal circulating in a pipe, and a turn, filled with liquid metal, for supplying an electric current perpendicular to the magnetic fiel
4253695 Automatic grapple March 3, 1981
An automatic grapple comprising a hollow body and a slide suspended by a maneuvering cable with axially spaced portions to transform the relative movement of the slide to a displacement of gripping arms for engaging an object to be seized. The slide carries a locking member having variab
4213494 Process and apparatus for low pressure casting July 22, 1980
In the low pressure casting of a metal in a mould supplied from below by an electromagnetic pump, the durations of the various stages of the moulding cycle are determined in dependence on the temperature of the mould, the temperature of the metal in the mould and the temperature of the m

 
 
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