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G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
G21C3/322—Means to influence the coolant flow through or around the bundles
G—PHYSICS
G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
G21C—NUCLEAR REACTORS
G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
G21C3/336—Spacer elements for fuel rods in the bundle
G21C3/338—Helicoidal spacer elements
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E30/00—Energy generation of nuclear origin
Y02E30/30—Nuclear fission reactors
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Physics & Mathematics
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Engineering & Computer Science
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Plasma & Fusion
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General Engineering & Computer Science
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High Energy & Nuclear Physics
(AREA)
Production Of Liquid Hydrocarbon Mixture For Refining Petroleum
(AREA)
Heat-Exchange Devices With Radiators And Conduit Assemblies
(AREA)