Version: 2024.08
Loading Scheme...
This area was updated. Please refer to the CPC Notices of Changes and Notices of Editorial Corrections for more information.
CPC | COOPERATIVE PATENT CLASSIFICATION | ||||||
| G21C | NUCLEAR REACTORS (fusion reactors, hybrid fission-fusion reactors G21B; nuclear explosives G21J) [2018-08] WARNINGS
|
G21C 1/00 | Reactor types [2018-01] |
G21C 1/02 | . | Fast fission reactors, i.e. reactors not using a moderator {; Metal cooled reactors; Fast breeders} [2017-08] |
G21C 1/022 | . . | {characterised by the design or properties of the core} [2018-01] |
G21C 1/024 | . . . | {where the core is divided in zones with fuel and zones with breeding material} [2013-01] |
G21C 1/026 | . . . | {Reactors not needing refuelling, i.e. reactors of the type breed-and-burn, e.g. travelling or deflagration wave reactors or seed-blanket reactors} [2024-08] |
G21C 1/028 | . . | {cooled by a pressurised coolant (cooling arrangements G21C 15/00)} [2013-01] |
G21C 1/03 | . . | cooled by a coolant not essentially pressurised, e.g. pool-type reactors [2013-01] |
G21C 1/04 | . | Thermal reactors {; Epithermal reactors} [2017-08] |
G21C 1/06 | . . | Heterogeneous reactors, i.e. in which fuel and moderator are separated [2013-01] |
G21C 1/07 | . . . | Pebble-bed reactors; Reactors with granular fuel [2013-01] |
G21C 1/08 | . . . | moderator being highly pressurised, e.g. boiling water reactor, integral super-heat reactor, pressurised water reactor (G21C 1/22 takes precedence) [2013-01] |
G21C 1/082 | . . . . | {Reactors where the coolant is overheated} [2013-01] |
G21C 1/084 | . . . . | {Boiling water reactors} [2013-01] |
G21C 1/086 | . . . . | {Pressurised water reactors} [2013-01] |
G21C 1/088 | . . . . | {Inherently safe boiling water reactors} [2019-01] |
G21C 1/09 | . . . . | Pressure regulating arrangements, i.e. pressurisers [2013-01] |
G21C 1/10 | . . . . | moderator and coolant being different or separated [2013-01] |
G21C 1/12 | . . . . . | moderator being solid, e.g. Magnox reactor {or gas-graphite reactor} [2018-01] |
G21C 1/14 | . . . | moderator being substantially not pressurised, e.g. swimming-pool reactor (G21C 1/22 takes precedence) [2013-01] |
G21C 1/16 | . . . . | moderator and coolant being different or separated, e.g. sodium-graphite reactor {, sodium-heavy water reactor or organic coolant-heavy water reactor} [2018-01] |
G21C 1/22 | . . . | using liquid or gaseous fuel [2013-01] |
G21C 1/24 | . . | Homogeneous reactors, i.e. in which the fuel and moderator present an effectively homogeneous medium to the neutrons [2013-01] |
G21C 1/26 | . . . | Single-region reactors [2013-01] |
G21C 1/28 | . . . | Two-region reactors [2013-01] |
G21C 1/30 | . | Subcritical reactors {; Experimental reactors other than swimming-pool reactors or zero-energy reactors} [2018-01] |
G21C 1/303 | . . | {Experimental or irradiation arrangements inside the reactor (irradiation loops G21C 1/306)} [2018-01] |
G21C 1/306 | . . | {Irradiation loops} [2013-01] |
G21C 1/32 | . |
G21C 1/322 | . . | {wherein the heat exchanger is disposed above the core} [2013-01] |
G21C 1/324 | . . | {wherein the heat exchanger is disposed beneath the core} [2013-01] |
G21C 1/326 | . . | {wherein the heat exchanger is disposed next to or beside the core} [2013-01] |
G21C 1/328 | . . | {wherein the prime mover is also disposed in the vessel} [2013-01] |
G21C 3/00 | Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements [2013-01] |
G21C 3/02 | . |
G21C 3/04 | . . | Constructional details [2013-01] |
G21C 3/041 | . . . | {Means for removal of gases from fuel elements} [2013-01] |
G21C 3/042 | . . . | {Fuel elements comprising casings with a mass of granular fuel with coolant passages through them} [2013-01] |
G21C 3/044 | . . . | {Fuel elements with porous or capillary structure} [2013-01] |
G21C 3/045 | . . . | {Pellets} [2019-01] |
G21C 3/047 | . . . . | {Pellet-clad interaction} [2019-01] |
G21C 3/048 | . . . . | {Shape of pellets} [2019-01] |
G21C 3/06 | . . . | Casings; Jackets [2013-01] |
G21C 3/07 | . . . . | characterised by their material, e.g. alloys [2013-01] |
G21C 3/08 | . . . . | provided with external means to promote heat-transfer, e.g. fins, baffles [2013-01] |
G21C 3/10 | . . . . | End closures {; Means for tight mounting therefor} [2017-08] |
G21C 3/105 | . . . . . | {Flattened end-closures} [2013-01] |
G21C 3/12 | . . . . | Means forming part of the element for locating it within the reactor core {(means not forming part of the element G21C 5/06)} [2013-01] |
G21C 3/14 | . . . . | Means forming part of the element for inserting it into, or removing it from, the core; Means for coupling adjacent elements {, e.g. to form a stringer} [2017-08] |
G21C 3/16 | . . . | Details of the construction within the casing [2013-01] |
G21C 3/17 | . . . . | Means for storage or immobilisation of gases in fuel elements [2013-01] |
G21C 3/18 | . . . . | Internal spacers or other non-active material within the casing, e.g. compensating for expansion of fuel rods or for compensating excess reactivity (interlayers G21C 3/20) [2013-01] |
G21C 3/20 | . . . . | with coating on fuel or on inside of casing; with non-active interlayer between casing and active material {with multiple casings or multiple active layers} [2013-01] |
G21C 3/22 | . . | with fissile or breeder material in contact with coolant [2013-01] |
G21C 3/24 | . . | with fissile or breeder material in fluid form within a non-active casing [2013-01] |
G21C 3/26 | . . | with fissile or breeder material in powder form within a non-active casing [2013-01] |
G21C 3/28 | . . | with fissile or breeder material in solid form within a non-active casing [2013-01] |
G21C 3/30 | . | Assemblies of a number of fuel elements in the form of a rigid unit [2013-01] |
G21C 3/32 | . . | Bundles of parallel pin-, rod-, or tube-shaped fuel elements [2013-01] |
G21C 3/3206 | . . . | {Means associated with the fuel bundle for filtering the coolant, e.g. nozzles, grids} [2013-01] |
G21C 3/3213 | . . . |
G21C 3/322 | . . . | Means to influence the coolant flow through or around the bundles [2013-01] |
G21C 3/3225 | . . . . | {by waterrods} [2019-01] |
G21C 3/324 | . . . | Coats or envelopes for the bundles [2013-01] |
G21C 3/3245 | . . . . | {made of moderator material} [2013-01] |
G21C 3/326 | . . . | comprising fuel elements of different composition; comprising, in addition to the fuel elements, other pin-, rod-, or tube-shaped elements, e.g. control rods, grid support rods, fertile rods, poison rods or dummy rods [2013-01] |
G21C 3/3262 | . . . . | {Enrichment distribution in zones} [2019-01] |
G21C 3/3265 | . . . . . | {Radial distribution} [2019-01] |
G21C 3/3267 | . . . . . | {Axial distribution} [2019-01] |
G21C 3/328 | . . . . | Relative disposition of the elements in the bundle lattice [2013-01] |
G21C 3/33 | . . . | Supporting or hanging of elements in the bundle (spacer grids G21C 3/34); Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles [2013-01] |
G21C 3/3305 | . . . . | {Lower nozzle} [2013-01] |
G21C 3/331 | . . . . | {Comprising hold-down means, e.g. springs} [2013-01] |
G21C 3/3315 | . . . . | {Upper nozzle} [2013-01] |
G21C 3/332 | . . . . | Supports for spacer grids [2013-01] |
G21C 3/334 | . . . | Assembling {, maintenance or repair of} the bundles {(assembling, maintenance or repair of other reactor components G21C 19/207)} [2013-01] |
G21C 3/335 | . . . | Exchanging elements in irradiated bundles [2013-01] |
G21C 3/336 | . . . |
G21C 3/338 | . . . . | Helicoidal spacer elements [2013-01] |
G21C 3/34 | . . . | Spacer grids [2013-01] |
G21C 3/3408 | . . . . | {Compact spacer grids, e.g. made of a plate or a blade} [2013-01] |
G21C 3/3416 | . . . . | {Spacer grids formed by metallic wires, e.g. springs} [2013-01] |
G21C 3/3424 | . . . . | {Fabrication of spacer grids} [2013-01] |
G21C 3/3432 | . . . . | {Grids designed to influence the coolant, i.e. coolant mixing function} [2019-01] |
G21C 3/344 | . . . . | formed of assembled tubular elements [2013-01] |
G21C 3/348 | . . . . | formed of assembled non-intersecting strips [2013-01] |
G21C 3/352 | . . . . | formed of assembled intersecting strips [2013-01] |
G21C 3/356 | . . . . | being provided with fuel element supporting members [2013-01] |
G21C 3/3563 | . . . . . | {Supporting members formed only by deformations in the strips} [2013-01] |
G21C 3/3566 | . . . . . | {Supporting members formed only of elements fixed on the strips} [2013-01] |
G21C 3/36 | . . | Assemblies of plate-shaped fuel elements or coaxial tubes [2013-01] |
G21C 3/38 | . | Fuel units consisting of a single fuel element in a supporting sleeve {or in another supporting element} [2013-01] |
G21C 3/40 | . | Structural combination of fuel element with thermoelectric element for direct production of electric energy from fission heat (for temperature measurement G21C 17/10 ){or with another arrangement for direct production of electric energy, e.g. a thermionic device (combination with thermoelements for temperature measurements G21C 17/102)} [2013-01] |
G21C 3/42 | . | Selection of substances for use as reactor fuel [2013-01] |
G21C 3/44 | . . | Fluid or fluent reactor fuel [2013-01] |
G21C 3/46 | . . . | Aqueous compositions [2013-01] |
G21C 3/48 | . . . . | True or colloidal solutions of the active constituent [2013-01] |
G21C 3/50 | . . . . | Suspensions of the active constituent; Slurries [2013-01] |
G21C 3/52 | . . . | Liquid metal compositions [2013-01] |
G21C 3/54 | . . . | Fused salt, oxide or hydroxide compositions [2013-01] |
G21C 3/56 | . . . | Gaseous compositions; Suspensions in a gaseous carrier [2013-01] |
G21C 3/58 | . . | Solid reactor fuel {Pellets made of fissile material} [2013-01] |
G21C 3/60 | . . . | Metallic fuel; Intermetallic dispersions [2013-01] |
G21C 3/62 | . . . | Ceramic fuel [2013-01] |
G21C 3/623 | . . . . | {Oxide fuels} [2013-01] |
G21C 3/626 | . . . . | {Coated fuel particles} [2013-01] |
G21C 3/64 | . . . . | Ceramic dispersion fuel, e.g. cermet [2013-01] |
G21C 5/00 | Moderator or core structure; Selection of materials for use as moderator [2013-01] |
G21C 5/02 | . | Details [2013-01] |
G21C 5/04 | . . | Spatial arrangements allowing for Wigner growth [2013-01] |
G21C 5/06 | . . | Means for locating or supporting fuel elements {(means forming part of the element G21C 3/12)} [2013-01] |
G21C 5/08 | . . | Means for preventing undesired asymmetric expansion of the complete structure {; Stretching devices, pins} [2017-08] |
G21C 5/10 | . . | Means for supporting the complete structure {(arrangements for supporting vessels and core-structures G21C 13/024)} [2013-01] |
G21C 5/12 | . | characterised by composition, e.g. the moderator containing additional substances which ensure improved heat resistance of the moderator {(purification of fluid moderators during the operation of the reactor G21C 19/30)} [2013-01] |
G21C 5/123 | . . | {Moderators made of organic materials} [2013-01] |
G21C 5/126 | . . | {Carbonic moderators (carbon and graphite in general C01B 32/00; refractory carbon-bulbs C04B 35/00; carbon electrodes C25B)} [2017-08] |
G21C 5/14 | . | characterised by shape [2013-01] |
G21C 5/16 | . . | Shape of its constituent parts [2013-01] |
G21C 5/18 | . | characterised by the provision of more than one active zone [2013-01] |
G21C 5/20 | . . | wherein one zone contains fissile material and another zone contains breeder material [2013-01] |
G21C 5/22 | . . | wherein one zone is a superheating zone [2013-01] |
G21C 7/00 | Control of nuclear reaction [2013-01] |
G21C 7/005 | . | {Flux flattening} [2013-01] |
G21C 7/02 | . | by using self-regulating properties of reactor materials, {e.g. Doppler effect}(arrangements that involve temperature stability G21C 7/32) [2013-01] |
G21C 7/04 | . . |
G21C 7/06 | . | by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section [2013-01] |
G21C 7/08 | . . | by displacement of solid control elements, e.g. control rods [2013-01] |
G21C 7/10 | . . . | Construction of control elements [2013-01] |
G21C 7/103 | . . . . | Control assemblies containing one or more absorbants as well as other elements, e.g. fuel or moderator elements [2013-01] |
G21C 7/107 | . . . . | Control elements adapted for pebble-bed reactors [2013-01] |
G21C 7/11 | . . . . | Deformable control elements, e.g. flexible, telescopic, articulated [2013-01] |
G21C 7/113 | . . . . | Control elements made of flat elements; Control elements having cruciform cross-section [2013-01] |
G21C 7/117 | . . . . | Clusters of control rods; Spider construction [2013-01] |
G21C 7/12 | . . . | Means for moving control elements to desired position (dropping rods in an emergency G21C 9/02) [2013-01] |
G21C 7/14 | . . . . | Mechanical drive arrangements [2013-01] |
G21C 7/16 | . . . . | Hydraulic or pneumatic drive [2013-01] |
G21C 7/18 | . . . | Means for obtaining differential movement of control elements [2013-01] |
G21C 7/20 | . . . | Disposition of shock-absorbing devices (shock-absorbers in general F16F ){; Braking arrangements} [2018-01] |
G21C 7/22 | . . | by displacement of a fluid or fluent neutron-absorbing material {, e.g. by adding neutron-absorbing material to the coolant} [2017-08] |
G21C 7/24 | . . | Selection of substances for use as neutron-absorbing material [2013-01] |
G21C 7/26 | . | by displacement of the moderator or parts thereof {by changing the moderator concentration} [2013-01] |
G21C 7/27 | . . | Spectral shift control [2013-01] |
G21C 7/28 | . | by displacement of the reflector or parts thereof [2013-01] |
G21C 7/30 | . | by displacement of the reactor fuel or fuel elements [2013-01] |
G21C 7/32 | . | by varying flow of coolant through the core {by adjusting the coolant or moderator temperature} [2013-01] |
G21C 7/34 | . | by utilisation of a primary neutron source [2013-01] |
G21C 7/36 | . | Control circuits [2013-01] |
G21C 9/00 | Emergency protection arrangements structurally associated with the reactor {, e.g. safety valves provided with pressure equalisation devices}(emergency cooling arrangements G21C 15/18) [2016-08] |
G21C 9/001 | . | {against explosions, e.g. blast shields} [2016-08] |
G21C 9/002 | . | {against Na- or Ka- reactions} [2013-01] |
G21C 9/004 | . | Pressure suppression [2013-01] |
G21C 9/008 | . . | by rupture-discs or -diaphragms [2013-01] |
G21C 9/012 | . . | by thermal accumulation or by steam condensation, e.g. ice condensers [2013-01] |
G21C 9/016 | . | Core catchers [2013-01] |
G21C 9/02 | . | Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; {Control elements having arrangements activated in an emergency}(control elements per se G21C 7/00) [2013-01] |
G21C 9/022 | . . | {Reactor fuses} [2013-01] |
G21C 9/024 | . . | {Rupture diaphragms} [2013-01] |
G21C 9/027 | . . | by fast movement of a solid, e.g. pebbles [2013-01] |
G21C 9/033 | . . | by an absorbent fluid [2013-01] |
G21C 9/04 | . | Means for suppressing fires {; Earthquake protection} [2023-08] |
G21C 9/06 | . . | Means for preventing accumulation of explosives gases, e.g. recombiners [2013-01] |
G21C 11/00 | Shielding structurally associated with the reactor [2013-01] |
G21C 11/02 | . |
G21C 11/022 | . . | {inside the reactor vessel} [2013-01] |
G21C 11/024 | . . . | {structurally combined with the casing} [2013-01] |
G21C 11/026 | . . | {in apertures or channels through a wall} [2013-01] |
G21C 11/028 | . . | {characterised by the form or by the material} [2013-01] |
G21C 11/04 | . . | on waterborne craft [2013-01] |
G21C 11/06 | . | Reflecting shields, i.e. for minimising loss of neutrons [2013-01] |
G21C 11/08 | . | Thermal shields; Thermal linings, i.e. for dissipating heat from gamma radiation which would otherwise heat an outer biological shield {; Thermal insulation} [2023-08] |
G21C 11/081 | . . | {consisting of a non-metallic layer of insulating material} [2013-01] |
G21C 11/083 | . . | {consisting of one or more metallic layers} [2013-01] |
G21C 11/085 | . . . | {consisting exclusively of several metallic layers} [2013-01] |
G21C 11/086 | . . | {consisting of a combination of non-metallic and metallic layers, e.g. metal-sand-metal-concrete} [2013-01] |
G21C 11/088 | . . | {consisting of a stagnant or a circulating fluid} [2013-01] |
G21C 13/00 | Pressure vessels; Containment vessels; Containment in general (for chemical or physical processes B01J 3/00; pressure vessels in general F16J 12/00) [2013-01] |
G21C 13/02 | . | Details [2013-01] |
G21C 13/022 | . . | {Ventilating arrangements} [2013-01] |
G21C 13/024 | . . | Supporting constructions for pressure vessels or containment vessels [2013-01] |
G21C 13/028 | . . | Seals, e.g. for pressure vessels or containment vessels [2013-01] |
G21C 13/0285 | . . . | {for container apertures} [2013-01] |
G21C 13/032 | . . | Joints between tubes and vessel walls, e.g. taking into account thermal stresses [2013-01] |
G21C 13/036 | . . . | the tube passing through the vessel wall, i.e. continuing on both sides of the wall [2013-01] |
G21C 13/04 | . . | Arrangements for expansion and contraction [2013-01] |
G21C 13/06 | . . |
G21C 13/063 | . . . | {Seals for closures or for rotatable closures} [2019-01] |
G21C 13/067 | . . . | for tubes, e.g. standpipes; Locking devices for plugs [2013-01] |
G21C 13/0675 | . . . . | {Seals for the plugs} [2013-01] |
G21C 13/073 | . . . | Closures for reactor-vessels, e.g. rotatable [2013-01] |
G21C 13/0735 | . . . . | {Seals for closures or for rotatable closures} [2013-01] |
G21C 13/08 | . | Vessels characterised by the material; Selection of materials for pressure vessels [2013-01] |
G21C 13/087 | . . | Metallic vessels [2013-01] |
G21C 13/0875 | . . . | {Tube-type vessels, e.g. for not essentially pressurised coolants} [2013-01] |
G21C 13/093 | . . | Concrete vessels [2013-01] |
G21C 13/0933 | . . . | {made of prestressed concrete} [2013-01] |
G21C 13/0936 | . . . . | {Particulars concerning prestressing devices and cables} [2013-01] |
G21C 13/10 | . | Means for preventing contamination in the event of leakage, {e.g. double wall} [2013-01] |
G21C 15/00 | Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants [2013-01] |
G21C 15/02 | . | Arrangements or disposition of passages in which heat is transferred to the coolant; {Coolant flow control devices (G21C 19/04 takes precedence; coolant flow control through fuel assemblies, e.g. flow restrictors G21C 3/322)} [2013-01] |
G21C 15/04 | . . |
G21C 15/06 | . . . | in fuel elements [2013-01] |
G21C 15/08 | . . | from moderating material [2013-01] |
G21C 15/10 | . . | from reflector or thermal shield [2013-01] |
G21C 15/12 | . . | from pressure vessel; from containment vessel [2013-01] |
G21C 15/14 | . . | from headers; from joints in ducts [2013-01] |
G21C 15/16 | . |
G21C 15/18 | . | Emergency cooling arrangements; Removing shut-down heat [2013-01] |
G21C 15/182 | . . | {comprising powered means, e.g. pumps} [2013-01] |
G21C 15/185 | . . . | {using energy stored in reactor system} [2019-01] |
G21C 15/187 | . . . | {using energy from the electric grid} [2019-01] |
G21C 15/20 | . | Partitions or thermal insulation between fuel channel and moderator [2013-01] |
G21C 15/22 | . |
G21C 15/24 | . |
G21C 15/243 | . . | for liquids [2013-01] |
G21C 15/247 | . . . | for liquid metals [2013-01] |
G21C 15/25 | . . . | using jet pumps [2013-01] |
G21C 15/253 | . . | for gases, e.g. blowers [2013-01] |
G21C 15/257 | . . |
G21C 15/26 | . . | by convection, e.g. using chimneys, using divergent channels [2013-01] |
G21C 15/28 | . | Selection of specific coolants (if serving as the moderator G21C 5/12; compositions per se C09K 5/00; {organic coolants G21C 5/123}); {Additions to the reactor coolants, e.g. against moderator corrosion (purification and regeneration of the reactor coolants G21C 19/30)} [2013-01] |
G21C 17/00 |
G21C 17/001 | . | {Mechanical simulators (electrical or magnetic simulators G06G 7/54)} [2013-01] |
G21C 17/002 | . | {Detection of leaks (by testing the coolant or the moderator G21C 17/04)} [2013-01] |
G21C 17/003 | . | Remote inspection of vessels, e.g. pressure vessels [2013-01] |
G21C 17/007 | . . | Inspection of the outer surfaces of vessels [2013-01] |
G21C 17/01 | . . | Inspection of the inner surfaces of vessels [2013-01] |
G21C 17/013 | . . | Inspection vehicles [2013-01] |
G21C 17/017 | . | Inspection or maintenance of pipe-lines or tubes in nuclear installations [2013-01] |
G21C 17/02 | . | Devices or arrangements for monitoring coolant or moderator [2013-01] |
G21C 17/021 | . . | {Solid moderators testing, e.g. graphite} [2013-01] |
G21C 17/022 | . . | for monitoring liquid coolants or moderators [2013-01] |
G21C 17/0225 | . . . | {Chemical surface treatment, e.g. corrosion (corrosion prevention in presence of water from scale removal or by modification of the properties of the liquid C02F 5/00; inhibiting corrosion by adding corrosion inhibitors C23F 11/00)} [2013-01] |
G21C 17/025 | . . . |
G21C 17/0255 | . . . . | {Liquid metal leaks detection (detecting leaks in pipe-line systems in general F17D 5/00)} [2013-01] |
G21C 17/028 | . . | for monitoring gaseous coolants [2013-01] |
G21C 17/032 | . . | Reactor-coolant flow measuring or monitoring {(measuring volume or mass flow in general G01F)} [2013-01] |
G21C 17/035 | . . | Moderator- or coolant-level detecting devices {(indicating or measuring liquid level in general G01F 23/00)} [2013-01] |
G21C 17/038 | . . | Boiling detection in moderator or coolant [2013-01] |
G21C 17/04 | . . | Detecting burst slugs [2013-01] |
G21C 17/041 | . . . | {characterised by systems for checking the coolant channels, e.g. matrix systems} [2013-01] |
G21C 17/042 | . . . | {Devices for selective sampling, e.g. valves, shutters, rotatable selector valves} [2013-01] |
G21C 17/044 | . . . | {Detectors and metering devices for the detection of fission products} [2013-01] |
G21C 17/045 | . . . . | {Precipitation chambers} [2013-01] |
G21C 17/047 | . . . . | {Detection and metering circuits} [2013-01] |
G21C 17/048 | . . . | {characterised by a special construction of fuel elements, e.g. by a confined "tracer"} [2013-01] |
G21C 17/06 | . | Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination (G21C 17/08, G21C 17/10 take precedence; detecting leaking fuel elements during reactor operation G21C 17/04) [2013-01] |
G21C 17/063 | . . | {Burn-up control (G21C 17/066 takes precedence)} [2013-01] |
G21C 17/066 | . . | {Control of spherical elements} [2013-01] |
G21C 17/07 | . . | Leak testing [2013-01] |
G21C 17/08 | . | Structural combination of reactor core or moderator structure with viewing means, e.g. with television camera, periscope, window [2013-01] |
G21C 17/10 | . | Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain [2013-01] |
G21C 17/102 | . . | {the sensitive element being part of a fuel element or a fuel assembly (structural combination with a thermoelectric element for direct production of electrical energy G21C 3/40)} [2013-01] |
G21C 17/104 | . . | Measuring reactivity [2013-01] |
G21C 17/108 | . . | Measuring reactor flux [2013-01] |
G21C 17/112 | . . | Measuring temperature [2013-01] |
G21C 17/116 | . . | Passages or insulators, e.g. for electric cables [2013-01] |
G21C 17/12 | . . | Sensitive element forming part of control element [2013-01] |
G21C 17/14 | . | Period meters [2013-01] |
G21C 19/00 | Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel [2013-01] |
G21C 19/02 | . | Details of handling arrangements [2013-01] |
G21C 19/04 | . . | Means for controlling flow of coolant over objects being handled; Means for controlling flow of coolant through channel being serviced {, e.g. for preventing "blow-out"} [2017-08] |
G21C 19/06 | . . | Magazines for holding fuel elements or control elements [2013-01] |
G21C 19/065 | . . . | {Rotatable magazines} [2013-01] |
G21C 19/07 | . . . | Storage racks; Storage pools [2013-01] |
G21C 19/08 | . . | Means for heating fuel elements before introduction into the core; Means for heating or cooling fuel elements after removal from the core [2013-01] |
G21C 19/10 | . . | Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements (manipulators B25J) [2013-01] |
G21C 19/105 | . . . | with grasping or spreading coupling elements [2013-01] |
G21C 19/11 | . . . | with revolving coupling elements, e.g. socket coupling [2013-01] |
G21C 19/115 | . . . | with latching devices and ball couplings [2013-01] |
G21C 19/12 | . . | Arrangements for exerting direct hydraulic or pneumatic force on fuel element or on control element [2013-01] |
G21C 19/14 | . | characterised by their adaptation for use with horizontal channels in the reactor core [2013-01] |
G21C 19/16 | . | Articulated or telescopic chutes or tubes for connection to channels in the reactor core [2013-01] |
G21C 19/18 | . | Apparatus for bringing fuel elements to the reactor charge area, e.g. from a storage place [2013-01] |
G21C 19/19 | . | Reactor parts specifically adapted to facilitate handling, e.g. to facilitate charging or discharging of fuel elements [2013-01] |
G21C 19/20 | . | Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel [2013-01] |
G21C 19/202 | . . | {Arrangements for handling ball-form, i.e. pebble fuel} [2013-01] |
G21C 19/205 | . . | {Interchanging of fuel elements in the core, i.e. fuel shuffling} [2013-01] |
G21C 19/207 | . . | {Assembling, maintenance or repair of reactor components (G21C 3/334 takes precedence)} [2013-01] |
G21C 19/22 | . . | Arrangements for obtaining access to the interior of a pressure vessel whilst the reactor is operating [2013-01] |
G21C 19/24 | . . . | by using an auxiliary vessel which is temporarily sealed to the pressure vessel [2013-01] |
G21C 19/26 | . | Arrangements for removing jammed or damaged fuel elements or control elements; Arrangements for moving broken parts thereof [2013-01] |
G21C 19/28 | . | Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core (pumping coolant G21D) [2013-01] |
G21C 19/30 | . . | with continuous purification of circulating fluent material, e.g. by extraction of fission products {deterioration or corrosion products, impurities, e.g. by cold traps (purification of circulating fluid fuels G21C 19/50; separation in general B01D)} [2013-01] |
G21C 19/303 | . . . |
G21C 19/307 | . . . |
G21C 19/31 | . . . . | for molten metals [2013-01] |
G21C 19/313 | . . . . . | using cold traps [2013-01] |
G21C 19/317 | . . . | Recombination devices for radiolytic dissociation products [2013-01] |
G21C 19/32 | . | Apparatus for removing radioactive objects or materials from the reactor discharge area, e.g. to a storage place; Apparatus for handling radioactive objects or materials within a storage place or removing them therefrom (disposal of waste material G21F 9/00) [2013-01] |
G21C 19/34 | . | Apparatus or processes for dismantling nuclear fuel, e.g. before reprocessing {; Apparatus or processes for dismantling strings of spent fuel elements}(shielded cells G21F 7/00) [2017-08] |
G21C 19/36 | . . | Mechanical means only [2013-01] |
G21C 19/365 | . . . | Removing cannings or casings from fuel [2013-01] |
G21C 19/37 | . . . . | by separating into pieces both the canning or the casing and the fuel element, e.g. by cutting or shearing [2013-01] |
G21C 19/375 | . . . | Compacting devices, e.g. for fuel assemblies [2013-01] |
G21C 19/38 | . . | Chemical means only [2013-01] |
G21C 19/40 | . | Arrangements for preventing occurrence of critical conditions, e.g. during storage [2013-01] |
G21C 19/42 | . | Reprocessing of irradiated fuel [2013-01] |
G21C 19/44 | . . | of irradiated solid fuel [2013-01] |
G21C 19/46 | . . . | Aqueous processes {, e.g. by using organic extraction means, including the regeneration of these means} [2017-08] |
G21C 19/48 | . . . | Non-aqueous processes [2013-01] |
G21C 19/50 | . . | of irradiated fluid fuel {, e.g. regeneration of fuels while the reactor is in operation} [2017-08] |
G21C 21/00 |
G21C 21/02 | . | Manufacture of fuel elements or breeder elements contained in non-active casings [2013-01] |
G21C 21/04 | . . | by vibrational compaction or tamping {of fuel in the jacket} [2013-01] |
G21C 21/06 | . . | by {rotatable} swaging {of the jacket around the fuel} [2013-01] |
G21C 21/08 | . . | by a slip-fit cladding process {by crimping the jacket around the fuel} [2013-01] |
G21C 21/10 | . . | by extrusion, drawing, or stretching {by rolling, e.g. "picture frame" technique} [2013-01] |
G21C 21/12 | . . | by hydrostatic or thermo-pneumatic canning {in general by pressing without lengthening, e.g. explosive coating} [2013-01] |
G21C 21/14 | . . | by plating {the fuel} in a fluid [2013-01] |
G21C 21/16 | . . | by casting or dipping techniques [2013-01] |
G21C 21/18 | . | Manufacture of control elements covered by group G21C 7/00 [2014-02] |
G21C 23/00 | Adaptations of reactors to facilitate experimentation or irradiation [2013-01] |