Class   976	NUCLEAR TECHNOLOGY
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	FOREIGN ART COLLECTIONS

FOR000

CLASS-RELATED FOREIGN DOCUMENTS

	DIGESTS

DIG1

ALLEGED CONTROLLED FUSION REACTORS (G21B-1/00) ** (UNCONTROLLED REACTORS DIG. 423; ARRANGEMENTS FOR HEATING OR CONFINING PLASMA H05H-1/02)

DIG2

. (1 indent ) Combined fission-fusion reactors [G21B-1/00B] *** (see also DIG. 5+)

DIG3

. (1 indent ) Inertial confinement fusion reactor [G21B-1/00C] *** (plasma produced by laser H05H-1/22B; by particle beam H05H-1/22C)

DIG4

. (1 indent ) Using a beam of particles some of which react with other particles [G21B-1/02]

DIG5

NUCLEAR REACTORS [G21C-1/00] *** (FUSION REACTORS H05H-1/00; NUCLEAR EXPLOSIVES DIG. 423; ANALOGUE COMPUTERS THEREFOR G06G-7/54)

DIG6

. (1 indent ) Integral reactors (i.e., the reactor core and the heat exchanger are placed in one vessel; the reactor vessel and the heat exchanger form an integral construction) [G21C-1/00B]

DIG7

.. (2 indent ) Where the prime mover is also placed in the vessel [G21C-1/00B2]

DIG8

.. (2 indent ) Where the heat exchanger is disposed above the core [G21C-1/00B3]

DIG9

.. (2 indent ) Where the heat exchanger is disposed beneath the core [G21C-1/00B4]

DIG10

.. (2 indent ) Where the heat exchanger is disposed beside the core [G21C-1/00B5]

DIG11

. (1 indent ) Fast fission reactors (i.e., reactors not using a moderator; metal cooled reactors; fast breeders) [G21C-1/02]

DIG12

.. (2 indent ) Characterized by the concept and properties of the core [G21C-1/02B]

DIG13

... (3 indent ) Where the core is divided into zones with fuel and zones with breeding material [G21C-1/02B2]

DIG14

.. (2 indent ) Cooled by a not essentially pressurized coolant (e.g., tub type) [G21C-1/02D] *** (cooling arrangements DIG. 187+)

DIG15

.. (2 indent ) Cooled by a pressurized coolant [G21C-1/02F] *** (cooling arrangements DIG. 187+)

DIG16

. (1 indent ) Thermal reactors; Epithermal reactors [G21C-1/04]

DIG17

.. (2 indent ) Heterogeneous reactors (i.e., in which the fuel and moderator are separated) [G21C-1/06]

DIG18

... (3 indent ) Pebble-bed reactors; Reactors with granular fuel [G21C-1/06B]

DIG19

... (3 indent ) Moderator being highly pressurized (e.g., boiling water reactor; integral super-heat reactor; pressurized water reactor) [G21C-1/08] *** (DIG. 30 takes precedence)

DIG20

.... (4 indent ) Pressure regulating arrangements; "pressurizers" [G21C-1/08B]

DIG21

.... (4 indent ) Reactors where the coolant is overheated [G21C-1/08D]

DIG22

.... (4 indent ) Boiling water reactors [G21C-1/08E]

DIG23

.... (4 indent ) Pressurized water reactors [G21C-1/08F]

DIG24

.... (4 indent ) Moderator and coolant being different or separated [G21C-1/10]

DIG25

....• (5 indent ) Moderator being solid (e.g., Magnox reactor, gas-graphite reactor [G21C-1/12]

DIG26

... (3 indent ) Moderator being substantially not pressurized (e.g., swimming-pool reactor [G21C-1/14] *** (DIG. 30 takes precedence)

DIG27

.... (4 indent ) Moderator and coolant being different or separated (e.g., sodium-graphite reactor, sodium-heavy water reactor, organic coolant-heavy water reactor) [G21C-1/16]

DIG28

....• (5 indent ) Coolant being pressurized [G21C-1/18]

DIG29

....•. (6 indent ) Moderator being liquid (e.g., pressure-tube reactor, also the construction of the pressure-tubes) [G21C-1/20]

DIG30

... (3 indent ) Using fluid or fluent fuel [G21C-1/22] *** (With granular fuel DIG. 18)

DIG31

.. (2 indent ) Homogeneous reactors (i.e., in which the fuel and moderator present an effectively homogeneous medium to the neutrons) [G21C-1/24]

DIG32

... (3 indent ) Single-region reactors [G21C-1/26]

DIG33

... (3 indent ) Two-region reactors [G21C-1/28]

DIG34

. (1 indent ) Subcritical reactors; Experimental reactors with exception of swimming-pool reactors, zero-energy reactors [G21C-1/30]

DIG35

.. (2 indent ) Experimental and irradiation arrangements inside the reactor [G21C-1/30B] *** (irradiation loops DIG. 36; material testing by neutrons G01N-23/00B)

DIG36

.. (2 indent ) Irradiation loops [G21C-1/30D]

DIG37

REACTOR FUEL ELEMENTS AND THEIR ASSEMBLIES; SELECTION OF SUBSTANCES FOR USE AS REACTOR FUEL ELEMENTS [G21C-3/00]

DIG38

. (1 indent ) Fuel elements [G21C-3/02] *** (manufacturing DIG. 283)

DIG39

.. (2 indent ) Constructional details [G21C-3/04]

DIG40

... (3 indent ) Means for removal of gases from fuel elements [G21C-3/04B]

DIG41

... (3 indent ) Fuel elements comprising casings with a mass of granular fuel with coolant passages through them [G21C-3/04C]

DIG42

... (3 indent ) Fuel elements with porous or capillary structure [G21C-3/04D]

DIG43

... (3 indent ) Casings; Jackets; Jacket materials [G21C-3/06]

DIG44

.... (4 indent ) Jacket materials (e.g., alloys) [G21C-3/06B]

DIG45

.... (4 indent ) Provided with external means to promote heat-transfer (e.g., fins, baffles) [G21C-3/08]

DIG46

.... (4 indent ) End closures; means for tight mounting therefor [G21C-3/10]

DIG47

....• (5 indent ) Flattened end-closures [G21C-3/10B]

DIG48

.... (4 indent ) Means forming part of the element for locating it within the reactor core [G21C-3/12] *** (means not forming part of the element DIG. 102)

DIG49

.... (4 indent ) 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) [G21C-3/14]

DIG50

... (3 indent ) Details of the construction within the casing [G21C-3/16]

DIG51

.... (4 indent ) Means for storage or immobilization of gases in fuel elements [G21C-3/16B]

DIG52

.... (4 indent ) Internal spacers; Other nonactive material within the casings (e.g., compensating for expansion of fuel rod; compensating for excess reactivity) [G21C-3/18] *** (interlayers DIG. 53)

DIG53

.... (4 indent ) With coating on fuel or on inside of casing; with nonactive interlayer between casing and active material; with multiple casings or multiple active layers [G21C-3/20]

DIG54

.. (2 indent ) Elements with fissile or breeder material in contact with coolant [G21C-3/22]

DIG55

.. (2 indent ) Elements with fissile or breeder material in fluid form within a nonactive casing [G21C-3/24]

DIG56

.. (2 indent ) Elements with fissile or breeder material in powder form within a nonactive casing [G21C-3/26] *** (DIG. 57 takes precedence)

DIG57

.. (2 indent ) Elements with fissile or breeder material in solid form within a nonactive casing [G21C-3/28]

DIG58

. (1 indent ) Assemblies of number of fuel elements in the form of a rigid unit [G21C-3/30]

DIG59

.. (2 indent ) Bundles of parallel pin-, rod-, or tube-shaped fuel elements [G21C-3/32]

DIG60

... (3 indent ) Means to influence the coolant flow through or around the assembly [G21C-3/32B] *** (DIG. 246 takes precedence)

DIG61

... (3 indent ) Coats and envelope surrounding the assembly [G21C-3/32C]

DIG62

... (3 indent ) Made of moderator-material [G21C-3/32D]

DIG63

... (3 indent ) Comprising fuel-elements of various compositions; comprising other pin-, rod-, or tube-like forms [G21C-3/32G] *** (elements influencing the coolant flow DIG. 60)

DIG64

.... (4 indent ) Special arrangements of elements in the assembly-lattice (e.g., fissile rods, fertile rods, water rods, poison rods, dummy-rods) [G21C-3/32G2]

DIG65

... (3 indent ) Supporting or hanging the elements in the assembly [G21C-3/32H] *** (Spacer grids DIG. 71); Means forming part of the assembly for inserting it into, or removing it from, the core; Means for coupling adjacent assemblies (means forming part of the element for inserting it into, or removing it from, the core; or means for coupling adjacent elements DIG. 49)

DIG66

.... (4 indent ) Supports for spacer grids [G21C-3/32H2]

DIG67

... (3 indent ) Means for the storage or removal of fission gases [G21C-3/32K] *** (means for the storage of fission gases in the elements DIG. 50; means for the removal of fission gases from elements DIG. 39+)

DIG68

... (3 indent ) Assembling the bundle; Exchange of elements in the bundle [G21C-3/32L]

DIG69

... (3 indent ) Spacer elements [G21C-3/32M] *** (spacer grids DIG. 71)

DIG70

.... (4 indent ) Helicoidal spacer elements [G21C-3/32M2]

DIG71

... (3 indent ) Spacer grids; other spacer devices [G21C-3/34]

DIG72

.... (4 indent ) Compact spacer grids (e.g., made of a plate or a blade) [G21C-3/34A]

DIG73

.... (4 indent ) Spacer grids formed of assembled tubular elements [G21C-3/34B]

DIG74

.... (4 indent ) Spacer grids wherein each cell has a circular cross section; cells formed of assembled metallic nonintersecting strips [G21C-3/34C]

DIG75

.... (4 indent ) Spacer grids wherein each cell has a polygonal (e.g., square cross section) ; cells formed of assembled metallic nonintersecting strips [G21C-3/34D]

DIG76

....• (5 indent ) Polygonal cells formed of intersecting strips [G21C-3/34D2]

DIG77

....•. (6 indent ) The cells being provided with fuel element supporting members [G21C-3/34D2A]

DIG78

....•.. (7 indent ) Supporting members formed only by deformations in the intersecting strips [G21C-3/34D2A2]

DIG79

....•.. (7 indent ) Supporting members formed only of elements fixed on the strips (e.g., by welding) [G21C-3/34D2A4]

DIG80

.... (4 indent ) Spacer grids formed by metallic wires (e.g., springs) [G21C-3/34E]

DIG81

.... (4 indent ) Fabrication of spacer grids [G21C-3/34F]

DIG82

.. (2 indent ) Assemblies of plate-shaped fuel elements or coaxial tubes [G21C-3/36]

DIG83

. (1 indent ) Fuel units consisting of a single fuel element in a supporting sleeve or in another supporting element [G21C-3/38]

DIG84

. (1 indent ) Structural combination of fuel element with thermoelectric element for direct production of electric energy from fission heat; or with another arrangement for direct production of electric energy (e.g., a thermionic device) [G21C-3/40] *** (temperature measurement DIG. 236; combination with thermoelements for temperature measurements DIG. 241)

DIG85

. (1 indent ) Selection of substances for use as reactor fuel [G21C-3/42]

DIG86

.. (2 indent ) Fluid or fluent reactor fuel [G21C-3/44]

DIG87

... (3 indent ) Aqueous compositions [G21C-3/46]

DIG88

.... (4 indent ) True or colloidal solutions of the active constituent [G21C-3/48]

DIG89

.... (4 indent ) Suspensions of the active constituent; Slurries [G21C-3/50]

DIG90

... (3 indent ) Liquid metal compositions [G21C-3/52]

DIG91

... (3 indent ) Fused salt, oxide or hydroxide compositions [G21C-3/54]

DIG92

... (3 indent ) Gaseous compositions; Suspensions in a gaseous carrier [G21C-3/56]

DIG93

.. (2 indent ) Solid reactor fuel; Pellets made of fissile material [G21C-3/58]

DIG94

... (3 indent ) Metallic fuel; Intermetallic dispersions [G21C-3/60]

DIG95

... (3 indent ) Ceramic fuel [G21C-3/62]

DIG96

.... (4 indent ) Oxide fuels [G21C-3/62B]

DIG97

.... (4 indent ) Coated fuel particles [G21C-3/62J]

DIG98

.... (4 indent ) Ceramic dispersion fuel (e.g., cermet) [G21C-3/64]

DIG99

MODERATOR OR CORE STRUCTURE; SELECTION OF MATERIALS FOR USE AS MODERATOR [G21C-5/00]

DIG100

. (1 indent ) Details [G21C-5/02]

DIG101

.. (2 indent ) Spatial arrangements allowing for Wigner growth [G21C-5/04]

DIG102

.. (2 indent ) Means for locating or supporting fuel elements [G21C-5/06] *** (means forming part of the element DIG. 48)

DIG103

.. (2 indent ) Means for preventing undesired asymmetric expansion of the complete structure (e.g., stretching devices, pins) [G21C-5/08]

DIG104

.. (2 indent ) Means for supporting the complete structure [G21C-5/10] *** (arrangements for supporting vessels and core structure DIG. 168)

DIG105

. (1 indent ) Characterized by composition (e.g., the moderator containing additional substances which ensure improved heat resistance of the moderator [G21C-5/12] *** (purification of fluid moderators during the operation of the reactor DIG. 266)

DIG106

.. (2 indent ) Moderators made of organic materials [G21C-5/12B]

DIG107

.. (2 indent ) Carbonic moderators [G21C-5/12G]

DIG108

. (1 indent ) Characterized by shape [G21C-5/14]

DIG109

.. (2 indent ) Shape of its constituent parts [G21C-5/16]

DIG110

. (1 indent ) Characterized by the provision of more than one active zone [G21C-5/18]

DIG111

.. (2 indent ) Wherein one zone contains fissile material and another zone contains breeder material [G21C-5/20]

DIG112

.. (2 indent ) Wherein one zone is a superheating zone [G21C-5/22]

DIG113

CONTROL OF NUCLEAR REACTION [G21C-7/00]

DIG114

. (1 indent ) Flux flattening [G21C-7/00B]

DIG115

. (1 indent ) By using self-regulating properties of reactor materials (e.g., Doppler effect) [G21C-7/02] *** (arrangements that involve temperature stability DIG. 136)

DIG116

.. (2 indent ) Of burnable poisons [G21C-7/04]

DIG117

. (1 indent ) By application of neutron-absorbing material (i.e., material with absorption cross section very much in excess of reflection cross section) [G21C-7/06]

DIG118

.. (2 indent ) By displacement of solid control elements (e.g., control rods) [G21C-7/08]

DIG119

... (3 indent ) Construction of control elements [G21C-7/10]

DIG120

.... (4 indent ) Control assemblies containing one or more absorbant as well as other elements (e.g., fuel or moderator elements) [G21C-7/10B]

DIG121

.... (4 indent ) Control elements adapted for pebble bed reactors [G21C-7/10C]

DIG122

.... (4 indent ) Deformable control elements (e.g., flexible, telescopic or articulated) [G21C-7/10D]

DIG123

.... (4 indent ) Control elements made of flat elements; Control elements having cruciform cross section [G21C-7/10E]

DIG124

.... (4 indent ) Cluster or spider control rods [G21C-7/10F]

DIG125

... (3 indent ) Means for moving control elements to desired position [G21C-7/12]

DIG126

.... (4 indent ) Mechanical drive arrangements [G21C-7/14]

DIG127

.... (4 indent ) Hydraulic or pneumatic drive [G21C-7/16]

DIG128

... (3 indent ) Means for obtaining differential movement of control elements [G21C-7/18]

DIG129

... (3 indent ) Disposition of shock-absorbing devices; Braking arrangements [G21C-7/20] *** (shock absorbers in general F16F)

DIG130

.. (2 indent ) By displacement of a fluid or fluent neutron-absorbing material (e.g., by adding neutron absorbing material to the coolant) [G21C-7/22]

DIG131

.. (2 indent ) Selection of substances for use as neutron-absorbing material [G21C-7/24]

DIG132

. (1 indent ) By displacement of the moderator or parts thereof; by changing the moderator concentration [G21C-7/26]

DIG133

.. (2 indent ) Spectral shift control [G21C-7/26B]

DIG134

. (1 indent ) By displacement of the reflector or parts thereof [G21C-7/28]

DIG135

. (1 indent ) By displacement of the reactor fuel or fuel elements [G21C-7/30]

DIG136

. (1 indent ) By varying flow of coolant through the core; by adjusting the coolant or moderator temperature [G21C-7/32]

DIG137

. (1 indent ) By utilization of a primary neutron source [G21C-7/34]

DIG138

. (1 indent ) Control circuits [G21C-7/36]

DIG139

EMERGENCY PROTECTION ARRANGEMENTS STRUCTALLY ASSOCIATED WITH THE REACTOR (E.G., SAFETY VALVES PROVIDED WITH PRESSURE EQUALIZATION DEVICES) [G21C-9/00] *** (EMERGENCY COOLING ARRANGEMENTS DIG. 196)

DIG140

. (1 indent ) Pressure suppression [G21C-9/00B]

DIG141

.. (2 indent ) By rupture discs or diaphragms [G21C-9/00B2]

DIG142

.. (2 indent ) By stream condensation or by thermal accumulation [G21C-9/00B4]

DIG143

. (1 indent ) Core catchers [G21C-9/00D]

DIG144

. (1 indent ) Against explosions (e.g., blast shields) [G21C-9/00F]

DIG145

. (1 indent ) Against Na- or Ka- reactions [G21C-9/00I]

DIG146

. (1 indent ) 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) [G21C-9/02] *** (control elements, per se, DIG. 113+)

DIG147

.. (2 indent ) By fast movement of a solid (e.g, pebbles) [G21C-9/02B]

DIG148

.. (2 indent ) By an absorbant fluid [G21C-9/02D]

DIG149

.. (2 indent ) Reactor fuses [G21C-9/02F]

DIG150

.. (2 indent ) Rupture diaphragms [G21C-9/02H]

DIG151

. (1 indent ) Means for suppressing fires; Earthquake protection [G21C-9/04]

DIG152

SHEILDING STRUCTURALLY ASSOCIATED WITH THE REACTOR [G21C-11/00]

DIG153

. (1 indent ) Biological sheilding; Neutron and gamma shielding [G21C-11/02] *** (in general DIG. 319+)

DIG154

.. (2 indent ) Inside the reactor vessel [G21C-11/02B]

DIG155

... (3 indent ) Structurally combined with the casing [G21C-11/02B2]

DIG156

.. (2 indent ) In apertures or channels through a wall [G21C-11/02D]

DIG157

.. (2 indent ) Characterized by the form or by the material [G21C-11/02F]

DIG158

.. (2 indent ) On waterborne craft [G21C-11/04]

DIG159

. (1 indent ) Reflecting shields (i.e., for minimizing loss of neutrons) [G21C-11/06]

DIG160

. (1 indent ) Thermal shields; Thermal linings (i.e., for dissipating heat from gamma radiation which would otherwise heat an outer biological shield); Thermal insulation [G21C-11/08]

DIG161

.. (2 indent ) Consisting of a nonmetallic layer of insulating material [G21C-11/08B]

DIG162

.. (2 indent ) Consisting of one or more metallic layers [G21C-11/08D]

DIG163

... (3 indent ) Consisting exclusively of several metallic layers [G21C-11/08D2]

DIG164

.. (2 indent ) Consisting of a combination of nonmetallic and metallic layers (e.g., metal-sand-metal-concrete) [G21C-11/08E]

DIG165

.. (2 indent ) Consisting of a stagnant or a circulating fluid [G21C-11/08F]

DIG166

PRESSURE VESSELS; CONTAINMENT VESSELS [G21C-13/00] *** (CHEMICAL OR PHYSICAL PROCESSES B01J-3/00; PRESSURE VESSELS IN GENERAL F16J-12/00)

DIG167

. (1 indent ) Details (e.g., seals, supporting constructions, ventillating arrangements, tube joints with a vessel wall) [G21C-13/02]

DIG168

.. (2 indent ) Supporting constructions for pressure vessels or containers [G21C-13/02B]

DIG169

.. (2 indent ) Seals (e.g., for pressure vessels or containers [G21C-13/02D]

DIG170

... (3 indent ) For container apertures [G21C-13/02D2]

DIG171

.. (2 indent ) Tube joints with a vessel wall (e.g., taking into account thermal stresses) [G21C-13/02F]

DIG172

.. (2 indent ) Ventillating arrangements [G21C-13/02G]

DIG173

.. (2 indent ) Tube crossings through a vessel wall [G21C-13/02H]

DIG174

.. (2 indent ) Arrangements for expansion and contraction [G21C-13/04]

DIG175

.. (2 indent ) Sealing plugs [G21C-13/06]

DIG176

... (3 indent ) For tubes (e.g., standpipes; Locking-devices for the plugs included) [G21C-13/06B]

DIG177

.... (4 indent ) Seals for the plugs [G21C-13/06B2]

DIG178

... (3 indent ) Closures for reactor-vessels (also rotatable) [G21C-13/06D]

DIG179

.... (4 indent ) Seals for closures or for rotatable closures [G21C-13/06D2]

DIG180

. (1 indent ) Vessels characterized by the material; Selection of materials for pressure vessels [G21C-13/08]

DIG181

.. (2 indent ) Metallic vessels [G21C-13/08B]

DIG182

... (3 indent ) Tube-type vessels (e.g., for not essentially pressurized coolants) [G21C-13/08B2]

DIG183

.. (2 indent ) Concrete vessels [G21C-13/08D]

DIG184

... (3 indent ) Made of prestressed-concrete [G21C-13/08D2]

DIG185

.... (4 indent ) Particulars concerning pre-stressing devices (and cables) [G21C-13/08D2B]

DIG186

. (1 indent ) Means for preventing contamination in the event of leakage (e.g., double wall) [G21C-13/10]

DIG187

COOLING ARRANGEMENTS WITHIN THE PRESSURE VESSEL CONTAINING THE CORE; SELECTION OF SPECIFIC COOLANTS [G21C-15/00]

DIG188

. (1 indent ) Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices [G21C-15/02] *** (DIG. 246 takes precedence); (coolant flow control through fuel assemblies (e.g., flow restrictors) DIG. 60)

DIG189

.. (2 indent ) From fissile or breeder material [G21C-15/04] *** (DIG. 59 takes precedence)

DIG190

... (3 indent ) In fuel elements [G21C-15/06]

DIG191

.. (2 indent ) From moderating material [G21C-15/08]

DIG192

.. (2 indent ) From reflector or thermal shield [G21C-15/10]

DIG193

.. (2 indent ) From pressure vessel; from containment vessel [G21C-15/12]

DIG194

.. (2 indent ) From headers; from joints in ducts [G21C-15/14]

DIG195

. (1 indent ) Comprising means for separating liquid and steam [G21C-15/16]

DIG196

. (1 indent ) Emergency cooling arrangements; Removing shut-down heat [G21C-15/18]

DIG197

. (1 indent ) Partitions or thermal insulation between fuel channel and moderator [G21C-15/20]

DIG198

. (1 indent ) Structural association of coolant tubes with headers [G21C-15/22]

DIG199

. (1 indent ) Promoting flow of the coolant [G21C-15/24]

DIG200

.. (2 indent ) For liquids [G21C-15/24B]

DIG201

... (3 indent ) For liquid metals [G21C-15/24B2]

DIG202

... (3 indent ) Jet-pumps [G21C-15/24B4]

DIG203

.. (2 indent ) For gases (ventilators) [G21C-15/24D]

DIG204

.. (2 indent ) Heat-pipes [G21C-15/24F]

DIG205

.. (2 indent ) By convection (e.g., using chimneys, using divergent channels [G21C-15/26]

DIG206

. (1 indent ) Selection of specific coolants; additions to the reactor coolants (e.g., against moderator corrosion) [G21C-15/28] *** (if serving as the moderator DIG.105, Compositions, per se, C09K-5/00; Organic coolants DIG. 106; purification and regeneration of the reactor coolants DIG. 266)

DIG207

MONITORING; TESTING; MAINTAINING [G21C-17/00]

DIG208

. (1 indent ) Mechanical simulators [G21C-17/00B] *** (electrical or magnetic simulators G06G-7/54)

DIG209

. (1 indent ) Detection of leaks [G21C-17/00C] *** (by testing the coolant or the moderator DIG. 224)

DIG210

. (1 indent ) Remote inspection of vessels (e.g., pressure vessels) [G21C-17/00D]

DIG211

.. (2 indent ) Inspection of outer surfaces of vessels [G21C-17/00D1]

DIG212

.. (2 indent ) Inspection of inner surfaces of vessels [G21C-17/00D2]

DIG213

.. (2 indent ) Inspection vehicles [G21C-17/00D3]

DIG214

. (1 indent ) Inspection or maintenance of pipe-lines or tubes in nuclear installations [G21C-17/00F]

DIG215

. (1 indent ) Devices or arrangements for monitoring coolant or moderator [G21C-17/02]

DIG216

.. (2 indent ) For monitoring liquid coolants or moderators [G21C-17/02B]

DIG217

... (3 indent ) For monitoring liquid metal coolants [G21C-17/02B2] *** (molten metal sampling in general G01N-1/12B)

DIG218

.... (4 indent ) Liquid metal leaks detection [G21C-17/02B2B] *** (detecting leaks in pipe-line systems in general F17D-5/00)

DIG219

.. (2 indent ) For monitoring gaseous coolants [G21C-17/02D]

DIG220

.. (2 indent ) Solid moderators testing (e.g., graphite) [G21C-17/02F]

DIG221

.. (2 indent ) Reactor coolants flow measuring or monitoring [G21C-17/02H] *** (measuring volume or mass flow in general G01F)

DIG222

.. (2 indent ) Moderator or coolant level detection devices [G21C-17/02K] *** (indicating or measuring liquid level in general G01F-23/00)

DIG223

.. (2 indent ) Moderator or coolant boiling detection [G21C-17/02M]

DIG224

.. (2 indent ) Detecting burst slugs [G21C-17/04]

DIG225

... (3 indent ) Characterized by (matrix) systems for checking the coolant channels [G21C-17/04B]

DIG226

... (3 indent ) Devices for selective sampling (e.g., valves, shutters, rotatable selector valves) [G21C-17/04D]

DIG227

... (3 indent ) Detectors and metering devices for the detection of fission products [G21C-17/04F]

DIG228

.... (4 indent ) Precipitation chambers [G21C-17/04F2]

DIG229

.... (4 indent ) Detection and metering circuits [G21C-17/04F4]

DIG230

... (3 indent ) Characterized by a special construction of fuel elements (e.g., by a confined "tracer") [G21C-17/04H]

DIG231

. (1 indent ) Devices or arrangements for monitoring or testing fuel or fuel elements (e.g., for burn-up, for contamination, for leak-tightness) not during reactor operation [G21C-17/06] *** (DIG. 235, DIG. 236 take precedence) (detection of leaking fuel elements during reactor operation DIG. 224)

DIG232

.. (2 indent ) Leak-tightness control [G21C-17/06B] *** (DIG. 234 takes precedence)

DIG233

.. (2 indent ) Burn-up control [G21C-17/06D] *** (DIG. 234 takes precedence)

DIG234

.. (2 indent ) Control of spherical elements [G21C-17/06F]

DIG235

. (1 indent ) Structural combination of reactor core or moderator structure with viewing means (e.g., with television camera, periscope, window) [G21C-17/08]

DIG236

. (1 indent ) Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments (e.g., for measuring temperature) [G21C-17/10]

DIG237

.. (2 indent ) Measuring reactivity [G21C-17/10B]

DIG238

.. (2 indent ) Measuring the reactor flux within the reactor (e.g., within its pressure vessel) [G21C-17/10D]

DIG239

.. (2 indent ) Measuring the temperature [G21C-17/10E]

DIG240

.. (2 indent ) Passages and insulators for electric cables and for measuring purposes [G21C-17/10G]

DIG241

.. (2 indent ) The sensitive element being part of a fuel element or a fuel assembly [G21C-17/10S] *** (structural combination with a thermoelectric element for direct production of electrical energy DIG. 84)

DIG242

.. (2 indent ) Sensitive element forming part of control element [G21C-17/12]

DIG243

. (1 indent ) Period meters [G21C-17/14]

DIG244

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) [G21C-19/00]

DIG245

. (1 indent ) Details of handling arrangements [G21C-19/02]

DIG246

.. (2 indent ) 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") [G21C-19/04]

DIG247

.. (2 indent ) Magazines for holding fuel element or control elements [G21C-19/06]

DIG248

... (3 indent ) Storage racks; Storage pools [G21C-19/06B]

DIG249

... (3 indent ) Rotatable magazines [G21C-19/06D]

DIG250

.. (2 indent ) Means for heating fuel elements before introduction into the core; Means for heating or cooling fuel elements after removal from the core [G21C-19/08]

DIG251

.. (2 indent ) Lifting devices or pulling devices adapted for cooperation with fuel elements or with control elements [G21C-19/10]

DIG252

... (3 indent ) With grasping or spreading coupling elements [G21C-19/10B]

DIG253

... (3 indent ) With revolving coupling elements (e.g., socket coupling) [G21C-19/10D]

DIG254

... (3 indent ) With latching devices and ball couplings [G21C-19/10F]

DIG255

.. (2 indent ) Arrangements for exerting direct hydraulic or pneumatic force on fuel element or on control element [G21C-19/12]

DIG256

. (1 indent ) Characterized by their adaptation for use with horizontal channels in the reactor core [G21C-19/14]

DIG257

. (1 indent ) Articulated or telescopic chutes or tubes for the connection to channels in the reactor core [G21C-19/16]

DIG258

. (1 indent ) Apparatus for bringing fuel elements to the reactor charge area (e.g., from a storage place) [G21C-19/18]

DIG259

. (1 indent ) Arrangements for introducing object into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel [G21C-19/20]

DIG260

.. (2 indent ) Arrangements for handling ball-form (i.e., pebble fuel) [G21C-19/20A]

DIG261

.. (2 indent ) Interchanging of fuel elements in the core (fuel shuffling) [G21C-19/20B]

DIG262

.. (2 indent ) Arrangements for obtaining access to the interior of a pressure vessel while the reactor is operating [G21C-19/22]

DIG263

... (3 indent ) By using an auxiliary vessel which is temporarily sealed to the pressure vessel [G21C-19/24]

DIG264

. (1 indent ) Arrangements for removing jammed or damaged fuel elements or control elements; Arrangements for moving broken parts thereof [G21C-19/26]

DIG265

. (1 indent ) Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core [G21C-19/28] *** (pumping coolant DIG. 199+ and 294)

DIG266

.. (2 indent ) With continuous purification of circulating fluent material (e.g., by extraction of fission products, deterioration or corrosion products, impurities (e.g., by cold traps) [G21C-19/30] *** (purification of circulating fluid fuels DIG. 281; separation in general B01D)

DIG267

... (3 indent ) Specially adapted for gases [G21C-19/30B] *** (decontamination of gases DIG. 378)

DIG268

... (3 indent ) Specially adapted for liquids [G21C-19/30D] *** (decontamination of liquids DIG. 379)

DIG269

.... (4 indent ) For molten metals [G21C-19/30D2]

DIG270

....• (5 indent ) Using "cold traps" [G21C-19/30D2B]

DIG271

... (3 indent ) Recombination devices [G21C-19/30R]

DIG272

. (1 indent ) 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 [G21C-19/32] *** (disposal of waste material DIG. 375+)

DIG273

. (1 indent ) Apparatus or processes for removing canning or casings from fuel; Separation of fuel and jacket material; also fuel elements, perforation (e.g., for sampling); Separation of fuel elements and fuel element-jackets in pieces; removal of end closures [G21C-19/34] *** (shielded cells DIG. 355+)

DIG274

.. (2 indent ) Mechanical means only [G21C-19/36]

DIG275

.. (2 indent ) Chemical means only [G21C-19/38]

DIG276

. (1 indent ) Arrangements for preventing occurence of critical conditions (e.g., during storage) [G21C-19/40]

DIG277

. (1 indent ) Reprocessing of irradiated fuel [G21C-19/42]

DIG278

.. (2 indent ) Of irradiated solid fuel [G21C-19/44]

DIG279

... (3 indent ) Aqueous processes (e.g., by using organic extraction means, including the regeneration of these means) [G21C-19/46]

DIG280

... (3 indent ) Nonaqueous processes [G21C-19/48]

DIG281

.. (2 indent ) Of irradiated fuel; also the regeneration of the fuels while the reactor is in operation [G21C-19/50]

DIG282

APPARATUS OR PROCESSES SPECIALLY ADAPTED TO THE MANUFACTURE OF REACTORS OR PARTS THEREOF [G21C-21/00] *** (IN GENERAL SECTION B, E.G., B23)

DIG283

. (1 indent ) Manufacture of fuel elements or breeder elements contained in nonactive casings [G21C-21/02]

DIG284

.. (2 indent ) By vibrational compaction or tamping of fuel in the jacket [G21C-21/04]

DIG285

.. (2 indent ) By rotatable swaging of the jacket around the fuel [G21C-21/06]

DIG286

.. (2 indent ) By a slip-fit cladding process; by crimping the jacket around the fuel [G21C-21/08]

DIG287

.. (2 indent ) By extrusion, drawing, or stretching; by rolling (e.g., "picture frame" technique) [G21C-21/10]

DIG288

.. (2 indent ) By hydrostatic or thermo-pneumatic cannings (in general by pressing without lenthening, e.g., explosive coating) [G21C-21/12]

DIG289

.. (2 indent ) By plating the fuel in a fluid [G21C-21/14]

DIG290

.. (2 indent ) By casting or dipping techniques [G21C-21/16]

DIG291

.. (2 indent ) Manufacture of control elements covered by DIG. 113+ [G21C-21/18]

DIG292

DETAILS OF NUCLEAR POWER PLANT [G21D-1/00] *** (CONTROL DIG. 296)

DIG293

. (1 indent ) Nuclear facilities decommissioning arrangements [G21D-1/00B] *** (decontamination arrangements; treating radioactively contaminated material DIG. 375+)

DIG294

. (1 indent ) Arrangements of auxiliary equipment [G21D-1/02]

DIG295

. (1 indent ) Pumping arrangements [G21D-1/04] *** (within the reactor pressure vessel DIG. 199+; electrodynamic pumps H02K-44/02)

DIG296

CONTROL OF NUCLEAR POWER PLANT [G21D-3/00] *** (CONTROL OF NUCLEAR REACTION IN GENERAL DIG. 113)

DIG297

. (1 indent ) Manual control [G21D-3/02]

DIG298

. (1 indent ) Safety arrangements [G21D-3/04] *** (emergency protection of reactor DIG. 139+)

DIG299

.. (2 indent ) Responsive to faults within the plant [G21D-3/06] *** (in the reactor DIG. 139+)

DIG300

. (1 indent ) Regulation of any parameters in the plant [G21D-3/08]

DIG301

.. (2 indent ) By a combination of a variable derived from neutron flux with other controlling variables (e.g., derived from temperature, cooling flow, pressure) [G21D-3/10]

DIG302

.. (2 indent ) By adjustment of the reactor in response only to changes in engine demand [G21D-3/12]

DIG303

... (3 indent ) Varying flow of coolant [G21D-3/14]

DIG304

... (3 indent ) Varying reactivity [G21D-3/16]

DIG305

.. (2 indent ) By adjustment of plant external to the reactor only in response to change in reactivity [G21D-3/18]

DIG306

ARRANGEMENTS OF REACTOR AND ENGINE IN WHICH REACTOR-PRODUCED HEAT IS CONVERTED INTO MECHANICAL ENERGY [G21D-5/00]

DIG307

. (1 indent ) Reactor and engine structurally combined (e.g., portable) [G21D-5/02]

DIG308

. (1 indent ) Reactor and engine not structurally combined [G21D-5/04]

DIG309

.. (2 indent ) With engine working medium circulating through reactor core [G21D-5/06]

DIG310

.. (2 indent ) With engine working medium heated in a heat exhanger by the reactor coolant [G21D-5/08]

DIG311

... (3 indent ) Liquid working medium partially heated by reactor and vaporized by heat source external to the core (e.g., with oil heating) [G21D-5/10]

DIG312

... (3 indent ) Liquid working medium vaporized by reactor coolant [G21D-5/12]

DIG313

.... (4 indent ) And also superheated by reactor coolant [G21D-5/14]

DIG314

.... (4 indent ) Superheated by separate heat source [G21D-5/16]

DIG315

ARRANGEMENTS FOR DIRECT PRODUCTION OF ELECTRIC ENERGY FROM FUSION OR FISSION REACTIONS [G21D-7/00] *** (OBTAINING ELECTRIC ENERGY FROM RADIOACTIVE SOURCES DIG. 410)

DIG316

. (1 indent ) Using magneto-hydrodynamic generators [G21D-7/02]

DIG317

. (1 indent ) Using thermoelectric elements and/or thermoionic converters [G21D-7/04] *** (structural combination of fuel element with thermoelectric element and/or thermoionic converter DIG. 84; structural combination of fuel element with thermoelectric element DIG. 415, DIG. 84)

DIG318

ARRANGEMENTS TO PROVIDE HEAT FOR PURPOSES OTHER THAN CONVERSION INTO POWER (E.G., FOR HEATING BUILDINGS) [G21D-9/00]

DIG319

SHIELDING CHARACTERIZED BY THE COMPOSITION OF THE MATERIALS [G21F-1/00]

DIG320

. (1 indent ) Selection of uniform shielding materials [G21F-1/02]

DIG321

.. (2 indent ) Liquids [G21F-1/02B]

DIG322

.. (2 indent ) Semi-liquids, gels, pastes [G21F-1/02C]

DIG323

.. (2 indent ) Concretes; Other hydraulic hardening materials [G21F-1/04]

DIG324

... (3 indent ) Combined with other materials dispersed in the carrier [G21F-1/04B]

DIG325

.... (4 indent ) With organic substances [G21F-1/04B2]

DIG326

.... (4 indent ) With metals [G21F-1/04B4]

DIG327

.. (2 indent ) Ceramics; Glasses; Refractories [G21F-1/06] *** (cermets DIG. 328)

DIG328

.. (2 indent ) Metals; Alloys; Cermets (i.e., sintered mixtures of ceramics and metals) [G21F-1/08]

DIG329

... (3 indent ) Heavy metals or alloys [G21F-1/08B]

DIG330

.. (2 indent ) Organic substances; Dispersions in organic carriers [G21F-1/10]

DIG331

... (3 indent ) Dispersions in organic carriers [G21F-1/10B]

DIG332

.... (4 indent ) Metallic dispersions [G21F-1/10B2]

DIG333

. (1 indent ) Laminated shielding materials [G21F-1/12]

DIG334

.. (2 indent ) Comprising metals [G21F-1/12B]

DIG335

SHIELDING CHARACTERIZED BY ITS PHYSICAL FORM (E.G., GRANULES OR SHAPE OF THE MATERIAL) [G21F-3/00]

DIG336

. (1 indent ) Clothing [G21F-3/02]

DIG337

.. (2 indent ) Clothing surrounding the wearer completely [G21F-3-02B]

DIG338

.. (2 indent ) Aprons [G21F-3/02C]

DIG339

.. (2 indent ) Gloves [G21F-3/02D] *** (mounting means on glove boxes DIG. 363)

DIG340

. (1 indent ) Bricks; Shields made up therefrom [G21F-3/04]

DIG341

TRANSPORTABLE OR PORTABLE SHIELDED CONTAINERS [G21F-5/00]

DIG342

. (1 indent ) Containers for fluid wastes [G21F-5/00A]

DIG343

. (1 indent ) Containers for solid radioactive wastes (e.g., ultimate disposal containers) [G21F-5/00B] *** (DIG. 347 takes precedence)

DIG344

.. (2 indent ) Containers for fuel elements [G21F-5/00B2]

DIG345

... (3 indent ) Fuel element racks in the container [G21F-5/00B2B]

DIG346

. (1 indent ) Shock absorbers, specially adapted therefor (e.g., impact buffers for containers) [G21F5-00D]

DIG347

. (1 indent ) Containers provided with a rotatable drum [G21F-5/00F]

DIG348

. (1 indent ) Specially adapted heat removal systems (e.g., by a circulating fluid or by cooling fins.); Specially adapted protection against external fire [G21F-5/00H]

DIG349

. (1 indent ) Closures for containers or corresponding sealing arrangements [G21F-5/00J]

DIG350

. (1 indent ) For storing radioactive sources (e.g., source carriers for irradiation units); Radio isotope containers [G21F-5/00L]

DIG351

.. (2 indent ) Syringe shields and holders [G21F-5/00L2]

DIG352

. (1 indent ) Specially adapted containers or shipping cask handling devices (e.g., transporting devices) [G21F-5/00N]

DIG353

. (1 indent ) With provision for restricted exposure of a radiation source within the container [G21F-5/02]

DIG354

.. (2 indent ) Means for controlling exposure (e.g., time, size of aperture) [G21F-5/04]

DIG355

SHIELDED CELLS OR ROOMS [G21F-7/00]

DIG356

. (1 indent ) Shielded passages through walls; Locks; Transferring devices between rooms [G21F-7/00B] *** (between glove-boxes DIG. 362)

DIG357

.. (2 indent ) Transferring by fluidic means [G21F-7/00B2]

DIG358

. (1 indent ) Room atmosphere, temperature or pressure control devices [G21F-7/00C] *** (glove-boxes DIG. 364)

DIG359

. (1 indent ) Observation devices permitting vision but shielding the observer (e.g., window, periscope) [G21F-7/02]

DIG360

.. (2 indent ) Windows (e.g., shielded) [G21F-7/02B]

DIG361

. (1 indent ) Shielded glove-boxes [G21F-7/04]

DIG362

.. (2 indent ) Shielded passages through walls; Locks; Closing or transferring means between glove-boxes [G21F-7/04B] *** (in general DIG. 356)

DIG363

.. (2 indent ) Glove mounting means [G21F-7/04C]

DIG364

.. (2 indent ) Glove-box atmosphere, temperature or pressure control devices [G21F-7/04D] *** (in general DIG. 358)

DIG365

.. (2 indent ) Lighting [G21F-7/04F]

DIG366

.. (2 indent ) Transportable glove-boxes [G21F-7/04G]

DIG367

. (1 indent ) Structural combination with remotely controlled apparatus (e.g., with manipulators) [G21F-7/06]

DIG368

.. (2 indent ) Integrated manipulators [G21F-7/06B]

DIG369

... (3 indent ) Mounted in a wall (e.g., pivotably mounted) [G21F-7/06B2]

DIG370

.. (2 indent ) Remotely manipulated measuring or controlling devices [G21F-7/06C] *** (combined with window DIG. 359)

DIG371

.. (2 indent ) Remotely manipulated machinery [G21F-7/06D]

DIG372

.. (2 indent ) Remotely manipulated tools [G21F-7/06F]

DIG373

.. (2 indent ) Transferring devices within cells or boxes [G21F-7/06G] *** (between cells DIG. 356, 362)

DIG374

.. (2 indent ) Remotely manipulating devices for fluids [G21F-7/06H]

DIG375

DECONTAMINATION ARRANGEMENTS; TREATING RADIOACTIVELY CONTAMINATED MATERIAL [G21F-9/00]

DIG376

. (1 indent ) Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof [G21F-9/00B]

DIG377

. (1 indent ) Recovery of isotopes from radioactive waste (e.g., fission products [G21F-9/00C]

DIG378

. (1 indent ) Treating gases [G21F-9/02]

DIG379

. (1 indent ) Treating liquids [G21F-9/04]

DIG380

.. (2 indent ) Processing [G21F-9/06]

DIG381

... (3 indent ) By evaporation; by distillation [G21F-9/08]

DIG382

... (3 indent ) By flocculation [G21F-9/10]

DIG383

... (3 indent ) By absorption; by adsorption; by ion exchange [G21F-9/12]

DIG384

... (3 indent ) By incineration; by calcination (e.g., desiccation) [G21F-9/14]

DIG385

... (3 indent ) By fixation in stable solid media [G21F-9/16]

DIG386

... (3 indent ) By biological processes [G21F-9/18]

DIG387

.. (2 indent ) Disposal of liquid waste [G21F-9/20]

DIG388

... (3 indent ) By storage in a tank or other container [G21F-9/22]

DIG389

... (3 indent ) By storage in the ground; by storage underwater (e.g., in ocean) [G21F-9/24]

DIG390

... (3 indent ) By dilution in water (e.g., in ocean, in stream) [G21F-9/26]

DIG391

. (1 indent ) Treating solids [G21F-9/28]

DIG392

.. (2 indent ) Processing [G21F-9/30]

DIG393

... (3 indent ) By incineration [G21F-9/32]

DIG394

.. (2 indent ) Disposal of solid waste [G21F-9/34]

DIG395

... (3 indent ) By packaging; by baling [G21F-9/36]

DIG396

ARRANGEMENTS FOR CONVERTING CHEMICAL ELEMENTS BY ELECTROMAGNETIC RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT (E.G., PRODUCING RADIOACTIVE ISOTOPES) [G21G-1/00]

DIG397

. (1 indent ) In nuclear reactors {G21G-1/02]

DIG398

. (1 indent ) Outside of nuclear reactors or particle accelerators [G21G-1/04]

DIG399

.. (2 indent ) By neutron irradiation [G21G-1/06]

DIG400

... (3 indent ) Accompanied by nuclear fission [G21G-1/08]

DIG401

.. (2 indent ) By bombardment with electrically charged particles [G21G-1/10] *** (irradiation devices DIG. 440+)

DIG402

.. (2 indent ) By electromagnetic irradiation (e.g., with gamma or X-rays) [G21G-1/12] *** (applications of radiation DIG. 421; irradiation devices DIG. 440+)

DIG403

RADIOACTIVE SOURCES [G21G-4/00] *** (PRODUCING NEUTRONS OR OTHER SUBATOMIC PARTICLES, X- OR GAMMA RAYS, IN FUSION REACTORS DIG. 1+, IN NUCLEAR REACTORS DIG. 5+; IN ACCELERATORS H05H; X-RAY TUBES H01J-35/00; GAMMA MASERS H01S-4/00)

DIG404

. (1 indent ) Neutron sources [G21G-4/02]

DIG405

. (1 indent ) Radioactive sources other than neutron sources [G21G-4/04]

DIG406

.. (2 indent ) Characterized by constructional features [G21G-4/06]

DIG407

... (3 indent ) Specially adapted for medical application [G21G-4/08]

DIG408

.. (2 indent ) With radium emanation [G21G-4/10]

DIG409

ALLEGED CONVERSION OF CHEMICAL ELEMENTS BY CHEMICAL REACTION [G21G-5/00]

DIG410

ARRANGEMENTS FOR OBTRAINING ELECTRICAL ENERGY FROM RADIOACTIVE SOURCES (E.G., FROM RADIOACTIVE ISOTOPES, NUCLEAR OR ATOMIC BATTERIES) [G21H-1/00] *** (FUSION REACTORS DIG. 1+; NUCLEAR REACTORS DIG. 5+)

DIG411

. (1 indent ) Cells charged directly by beta radiation [G21H-1/02]

DIG412

. (1 indent ) Cells using secondary emission induced by alpha radiation, beta radiation, or gamma radiation [G21H-1/04] *** (discharge tubes H01J-40/00)

DIG413

. (1 indent ) Cells wherein radiation is applied to the junction of different semiconductor materials [G21H-1/06]

DIG414

. (1 indent ) Cells in which radiation ionizes a gas in the presence of a junction of two dissimilar metals (i.e., contact potential difference cells) [G21H-1/08] *** (discharge tubes H01J)

DIG415

. (1 indent ) Cells in which radiation of disintegration heats a thermoelectric junction or a thermionic converter [G21H-1/10] *** (devices where heating occurs from fission reactions DIG. 39; discharge tubes functioning as thermionic generators H01J-45/00; thermoelectric devices comprising a junction of dissimilar materials H01L-35/00)

DIG416

.. (2 indent ) Cells provided with thermoelectric generators [G21H-1/10B]

DIG417

.. (2 indent ) Cells provided with thermionic generators [G21H-1/10C]

DIG418

. (1 indent ) Cells using conversion of the radiation into light combined with subsequent photoelectric conversion into electric energy [G21H-1/12]

DIG419

ARRANGEMENTS FOR DIRECT CONVERSION OF RADIATION ENERGY FROM RADIOACTIVE SOURCES TO FORMS OF ENERGY OTHER THAN ELECTRIC ENERGY (E.G., LIGHT) [G21H-3/00]

DIG420

. (1 indent ) In which material is excited to luminesce by the radiation [G21H-3/02]

DIG421

APPLICATIONS OF RADIATION FROM RADIOACTIVE SOURCES OR ARRANGEMENTS THEREFOR [G21H-5/00] ***

DIG422

. (1 indent ) As tracers [G21H-5/02] *** (medicinal preparations containing radioactive substances A61K-43/00; investigating or analyzing biological material G01N-33/16)

DIG423

NUCLEAR EXPLOSIVE DEVICES; "ATOMIC BOMBS") [G21J-1/00]

DIG424

PEACEFUL APPLICATIONS OF NUCLEAR EXPLOSIVE DEVICES [G21J-3/00] *** (OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIAL FROM DEEP WELLS BY MEANS OF NUCLEAR ENERGY E21B-43/236F, 43/24F)

DIG425

. (1 indent ) For excavation [G21J-3/02]

DIG426

DETECTION ARRANGEMENTS FOR NUCLEAR EXPLOSIONS [G21J-5/00] *** (INDIVIDUAL MEASURING DEVICES G01N)

DIG427

ARRANGEMENTS FOR HANDLING RADIATION OR PARTICLES (E.G., FOCUSING, MODERATING [G21K-1/00] *** (RADIATION FILTERS DIG. 435)

DIG428

. (1 indent ) Using diaphragms, collimators [G21K-1/02]

DIG429

.. (2 indent ) Using multiple collimators (e.g., Bucky screens); other devices for eliminating undesired or dispersed radiation [G21K-1/02B]

DIG430

.. (2 indent ) Using variable diaphragms, shutters, choppers [G21K-1/04]

DIG431

. (1 indent ) Using diffraction, refraction or reflection, e.g., monochromators [G21K-1/06] *** (DIG. 435, 445 take precedence)

DIG432

. (1 indent ) Deviation, concentration or focusing of the beam by electric or magnetic means [G21K-1/08] *** (electron-optical arrangements in electric discharge tubes H01J-29/46; details (e.g., electric or magnetic deviating means for direct voltage accelerators or in accelerators using single pulses) H05H-5/02; arrangements for injecting particles into orbits H05H-7/08; arrangements for ejecting particles from orbits H05H-7/10)

DIG433

.. (2 indent ) By electrical means [G21K-1/087]

DIG434

.. (2 indent ) By magnetic means [G21K-1/093]

DIG435

. (1 indent ) Scattering devices; Absorbing devices [G21K-1/10]

DIG436

.. (2 indent ) Resonant absorbers or driving arrangements therefor (e.g., for Moessbauer-effect devices) [G21K-1/12] *** (motors with reciprocating, oscillating or vibrating magnet, armature or coil system in general H02K-33/00)

DIG437

. (1 indent ) Using charge exchange devices (e.g., for neutralizing or changing the sign of the electrical charges of beams) [G21K-1/14] *** (producing or accelerating neutral particle beams H05H-3/00)

DIG438

. (1 indent ) Using polarizing devices (e.g., for obtaining a polarized beam) [G21K-1/16] *** (ion sources, ion guns H01J-27/02; polarized targets for producing nuclear reactions H05H-6/00B)

DIG439

CONVERSION SCREENS FOR THE CONVERSION OF THE SPATIAL DISTRIBUTION OF X-RAYS OR PARTICLE RADIATION INTO VISIBLE IMAGES (E.G., FLUOROSCOPIC SCREENS) [G21K-4/00] *** (PHOTOGRAPHIC PROCESSES USING X-RAY INTENSIFIERS G03C-5/17; DISCHARGE TUBES COMPRISING LUMINESCENT SCREENS H01J-1/62; CATHODE-RAY TUBES FOR X-RAY CONVERSION WITH OPTICAL OUTPUT H01J-31/50)

DIG440

IRRADIATION DEVICES [G21K-5/00] *** (DISCHARGE TUBES FOR IRRADIATING H01J-37/00)

DIG441

. (1 indent ) Having no beam-forming means [G21K-5/02]

DIG442

. (1 indent ) With beam-forming means [G21K-5/04]

DIG443

. (1 indent ) Holder for targets or for other objects to be irradiated [G21K-5/08]

DIG444

. (1 indent ) With provision for relative movement of beam source and object to be irradiated [G21K-5/10]

DIG445

GAMMA- OR X-RAY MICROSCOPES [G21K-7/00]

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