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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 376 | INDUCED NUCLEAR REACTIONS: PROCESSES, SYSTEMS, AND ELEMENTS |
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100 | NUCLEAR FUSION |
101 | Pellet guidance systems (e.g., pellet injection means) |
102 | Inertial confinement (e.g., nuclear explosive) |
107 | Fusion reaction by plural colliding plasmas or particle beams |
108 | Including accelerating particles into a stationary or static target (e.g., Cockcroft-Walton generator type) |
109 | With target replenishing |
110 | With means for modifying the resultant neutron output, e.g., moderator means |
111 | With means to pulsate ion beam |
112 | Cyclotron type acceleration of nuclei |
113 | With electrostatic voltage generating means |
114 | Self-contained neutron sources (e.g., neutron or accelerator tube) |
115 | With cooled electrodes or target |
116 | With ion beam collimator or filtering structure (e.g., extractor electrode) |
117 | With ion beam collimator or filtering structure |
118 | Subterranean sources |
119 | With control circuitry |
120 | Including bunched particle beam |
121 | Magnetic confinement of plasma |
122 | Plasma formed in situ by laser |
123 | Principal heating by wave energy |
125 | Imploding liners |
126 | With enveloping charged particle confinement (e.g., E or P layer) |
127 | With injection of electrically charged or accelerated particles |
131 | Auxiliary heating |
133 | Toroidal confinement of plasma |
139 | Linear confinement |
142 | Magnetic structure |
143 | With circuitry |
144 | Plasma formed between spaced electrodes |
146 | Including removal or use of impurities or reaction products (e.g., energy) |
147 | Direct conversion of energy |
148 | Including use of heat or radiation to effect a chemical reaction |
149 | Shock wave heating of plasma or gas (e.g., MHD heating) |
150 | Chamber structure or material |
151 | Fusion targets or pellets |
153 | DETECTION OF RADIATION BY AN INDUCED NUCLEAR REACTION |
156 | NUCLEAR TRANSMUTATION (E.G., BY MEANS OF PARTICLE OR WAVE ENERGY) |
157 | Gamma or charged particle activation analysis |
158 | By neutron bombardment |
159 | Neutron activation analysis |
168 | Halogens |
170 | Actinides |
171 | Breeder or converter reactor structures |
172 | Fertile fuel assembly structure or arrangement |
174 | Having particular coolant fluid flow path or pattern within reactor core |
175 | Orifice or fluid control at inlet or outlet of coolant channels |
177 | Plural coolant loops or passes through reactor core |
178 | Fuel assembly holddown or support |
179 | Coolant manipulated and used exterior of reactor core |
180 | Formation of uranium isotopes |
182 | Formation of plutonium isotopes |
183 | Doping of semiconductors |
184 | Rare earths |
185 | Alkali and alkaline elements |
186 | Molybdenum, technetium |
187 | Lead, polonium, bismuth |
188 | Sulfur, phosphorus |
189 | With reaction product treatment (e.g., recovery, separation) |
190 | By charged particle bombardment |
191 | Alpha-neutron sources |
192 | To produce spallation reactions |
194 | Proton bombardment |
196 | Alpha (helium nucleus) bombardment |
197 | Wherein the reaction product is an actinide or transuranium element |
198 | With reaction product treatment (e.g., recovery, separation) |
199 | Deuteron bombardment |
202 | Irradiation capsule, holder, or support |
203 | SEAL ARRANGEMENTS |
207 | WITH CONTROL OF REACTOR (E.G., CONTROL OF COOLANT FLOW) |
208 | Pulsed reactors |
209 | Spectral shift |
210 | By coolant flow |
212 | By altering quantity of characteristic of fuel within critical area |
214 | Reactor start-up |
215 | By electronic signal processing circuitry (e.g., plural redundant circuits) |
219 | By movement of control element or by release of neutron absorbing material |
220 | Wherein the control element is a reflector or moderator material |
223 | Rotatable control elements |
224 | Finger-type control elements (insertable into fuel element positions) |
226 | Wherein control element is driven directly into bed of fuel elements |
227 | Control element movable by means of cable and winch, chains or reels |
228 | Wherein driver or motivating is electric |
230 | Wherein driver or motivating is fluid |
232 | By motion transforming means, e.g., rack and pinion |
233 | Releasable coupling |
234 | Including shock absorber |
235 | Means for locking control element in desired position |
236 | Including control rod insertion and removal schemes |
239 | Rod or support carrying plural elements or diverse materials |
240 | Sensing or detecting device attached to, embedded in, or integral with control element |
241 | Power output control (e.g., load follows with steam dump) |
242 | Means to inhibit control rod movement |
243 | With cooling of control element |
244 | Temperature reactivity control |
245 | TESTING, SENSING, MEASURING, OR DETECTING A FISSION REACTOR CONDITION |
246 | Flowmeters |
247 | Temperature or pressure measurement |
248 | Optics |
249 | Vessel monitoring or inspection |
250 | Leak detection |
254 | Flux monitoring |
256 | Gas sensors (e.g., hydrogen detectors) |
257 | Fuel assay (e.g., burnup) |
258 | Position detection |
259 | By particular instrumentation circuitry |
260 | HANDLING OF FISSION REACTOR COMPONENT STRUCTURE WITHIN REACTOR SYSTEM |
261 | Fuel component |
262 | Including handling of a second different, diverse reactor component (e.g., control element, moderator element, vessel cover removal) |
264 | Charging or discharging of fuel |
268 | Refueling machines |
272 | Storage container systems for new and/or irradiated core elements |
273 | SUBTERRANEAN REACTOR STRUCTURES (E.G., UNDERGROUND CONTAINMENT, UNDERGROUND EXPLOSIVE) |
274 | For minimizing radioactive contamination within an underground chamber or of the material removed therefrom |
275 | For extracting materials or energy from the earth |
277 | REACTOR PROTECTION OR DAMAGE PREVENTION |
278 | By minimizing positive coolant void coefficient |
279 | Fire extinguishing or prevention |
280 | Core catchers |
281 | Fluid flow reversal protection |
282 | Emergency core coolant systems (e.g., injecting coolant into reactor or pipe systems) |
283 | Pressure suppression and relief |
285 | Expansion means (e.g., shock absorbers, roller bearings) |
287 | Shield or barrier between radiation or heat source and object to be protected (e.g., insulation, thermal shield) |
288 | Particular materials |
289 | Thermal insulation |
290 | For liquid metal cooled fast reactors (e.g., insulation for vault roof, or for the vessel walls as by a layer of stagnant or quasi-stagnant coolant) |
291 | Concentric tubes or conduits with insulation |
292 | Concentric tubes or conduits |
293 | Containment structures |
297 | With turbine protection means (e.g., turbine trip or overspeed protection means) |
298 | Auxiliary heat removal structure |
300 | Recombiners |
302 | Core restraint means |
305 | Corrosion or damage prevention |
307 | With pressurizer means |
308 | FISSION REACTOR MATERIAL (INCLUDING REACTION PRODUCTS) TREATMENT |
317 | COMBINED |
318 | With propulsion means |
320 | With direct conversion means |
322 | For storing excess energy |
323 | With chemical reaction |
326 | With laser |
327 | CONTROL COMPONENT FOR A FISSION REACTOR |
328 | Liquid control component |
331 | Gaseous control component |
332 | Telescopic control devices |
333 | Wherein concentration of the reactivity affecting material varies radially or axially of the control element |
335 | Flexible control element |
336 | Fuse actuated devices |
338 | Particulate type (e.g., balls) |
339 | Nonconventional control material |
340 | REACTOR STRUCTURES WITH TESTING OR IRRADIATION FACILITIES |
341 | With material holder or support positioned outside the radiation source |
342 | With provision for insertion of material to be irradiated into the radiation means |
346 | EPI-THERMAL REACTOR STRUCTURES (E.G., INTERMEDIATE NEUTRON SPECTRUM) |
347 | REACTOR STRUCTURES |
348 | Fast thermal composite core |
349 | Flux flattening |
350 | Moderator component varies in its effective density or materials |
352 | Orifice or fluid control at inlet or outlet of coolant channels |
353 | With particular control rod guide structure |
354 | Fuel material in contact with and supported by fluid |
355 | Fluidized beds |
356 | Fuel dispersed in liquid moderator, solution, etc. |
357 | Vapor forming, separating, or manipulating |
358 | With particular in situ reconstitution or modification of fuel moderator material |
359 | Fuel in molten state or in molten vehicle |
361 | Circulating fluid within reactor |
362 | Fuel assembly supports |
366 | Plural fluids or a fluid in plural phases circulating within reactor (e.g., pressure tube reactors) |
367 | In heat pipe means |
368 | Including chemically distinct gas |
370 | With formation, separation, or manipulation of a vapor (e.g., boiling water reactor (BWR) type) |
371 | With vapor-liquid separating means |
372 | With jet pump |
373 | Having specified fluid flow path or pattern within reactor core |
374 | Plural separate coolant loops through reactor core |
375 | With plural, coolant passes through reactor core |
377 | With particular flow directing or diverting means (e.g., flow baffle) |
378 | Vapor manipulated or used exterior of reactor core |
380 | Nonaqueous vapor |
381 | Pebble bed reactor |
383 | Fluid is a gas |
384 | Wherein the gas is steam |
385 | Having specified flow path or pattern within reactor core |
386 | Plural separate loops |
387 | Plural passes through core |
389 | With particular flow directing or diverting means (e.g., flow baffle) |
391 | Manipulated or used exterior of the reactor core |
395 | Having specified fluid flow path or pattern within reactor core |
396 | Plural separate coolant loops through reactor core |
397 | Plural passes |
399 | With particular flow directing or diverting means (e.g., flow baffle) |
401 | One-fluid-type pressure tube reactor |
402 | Manipulated or used exterior of reactor core |
409 | FUEL COMPONENT STRUCTURE |
410 | With means to prevent thinning of the cladding (e.g., amoeba effect) |
411 | Spherical particles |
412 | Encased with nonfuel component |
413 | With internal pressurizer |
414 | Coated, preformed, or impregnated layer or part or adhesively bonded layers or parts |
418 | Getter, fission product retainer of filter |
419 | Burnable poison |
420 | Interpellet spacing or positioning means |
421 | Homogeneously intermixed |
423 | Moderator or reflector |
424 | Coolant or heat exchange material |
425 | Heat insulating material |
426 | Plural fuel segments or elements |
427 | In solid moderator block |
428 | Wherein the fissile content varies radially or axially within the same container (e.g., plural fuel layers) |
429 | Complementary segments within same container |
430 | Spherically shaped segments within same container |
431 | Concentric cylindrical elements |
432 | Plate-type fuel elements |
433 | Stacked (e.g., Candu type reactor fuel components) |
434 | In pack or bundle |
435 | Wherein the fissile content varies radially or axially across the pack or bundle |
436 | Wire-wrapped fuel elements |
437 | Having the fuel element ends positioned on or attached to rails |
438 | Including grid |
439 | With coolant flow path deflecting means |
440 | For ends of fuel elements |
441 | With nonintegral fuel element contacting means |
442 | With fuel element contacting protuberance or projection |
443 | With coolant flow path deflecting means |
445 | With thermal expansion compensating means |
446 | With removable member |
447 | Including separate burnable poison or moderator |
448 | With means for spacing apart adjacent packs or bundles |
449 | Having provision or structure for insertion of control elements therein |
450 | With condition sensing or indicating means |
451 | Having particular end closure or seal (e.g., weld, plug, cap, etc.) |
453 | Fuel support or covering provided with fins, projections, prongs, etc.) |
455 | Hollow, annular, or graduated fuel layers or members (e.g., concentric, helical, etc.) |
456 | Vented fuel |
457 | Nonconventional jacket or can material |
458 | MODERATOR OR REFLECTOR COMPONENT STRUCTURE FOR A FISSION REACTOR |
460 | ROTATING PLUG-TYPE COVER |
461 | VESSEL SUPPORT (E.G., CORE VESSEL SUPPORTS) |
462 | GRIDS |
463 | MISCELLANEOUS |
CROSS-REFERENCE ART COLLECTIONS | ||
900 | PARTICULAR MATERIAL OR MATERIAL SHAPES FOR FISSION REACTORS |
908 | REACTOR GEOMETRY (OR PART THEREOF) DEFINED IN TERMS OF NUMERICAL VALUES |
909 | MOBILE REACTORS |
910 | ROTATING REACTORS |
911 | PLURAL REACTOR SYSTEMS |
912 | NUCLEAR REACTOR SYSTEMS SITUATED IN THE OCEAN |
913 | ANTIMATTER DEVICES AND METHODS |
914 | NUCLEAR EXPLOSIVES |
915 | FUSION REACTOR FUELS |
916 | METHODS OF MAKING FUSION FUEL TARGETS |
917 | UTILIZING DIFFERENT FUELS OR FUELS IN DIFFERENT FORMS, IN DIFFERENT REACTOR REGIONS IN RELATION TO AMOUNTS OF HEAT PRODUCED IN SAID REGIONS |
918 | ENTIRE REACTOR CORE OF SINGLE INTEGRAL STRUCTURE |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
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