ZIRLO Fuel Rod Cladding Tube
A precision zirconium-niobium alloy (ZIRLO) tube serving as the protective cladding for nuclear fuel pellets in non-irradiated fuel elements. Classified under HTS 8401.30.00.00 as a part of non-irradiated fuel cartridges for nuclear reactors. Provides corrosion resistance and fission product containment during reactor operation.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as zirconium alloy tube stock without nuclear specifications
General zirconium tubes lacking fuel element end fittings classify under Chapter 81 as other zirconium articles.
If made primarily of stainless steel rather than zirconium
Steel alloy seamless tubes for high-temperature use fall under Chapter 73 iron/steel tubes heading.
If classified as gas turbine engine parts due to similar materials
Misclassification occurs if lacking nuclear fuel-specific tolerances; proper context shifts to Chapter 84 turbomachinery parts.
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Import Tips & Compliance
• Submit material composition analysis confirming ZIRLO alloy specs (Zr-1%Nb-1%Sn); include end-plug welding qualification data
• Ensure chain-of-custody documentation from licensed fabricator
• Watch for re-export controls under ITAR if U.S.-origin
Related Products under HTS 8401.30.00.00
Uranium Dioxide Fuel Pellet Cartridge
A non-irradiated fuel element cartridge containing pressed uranium dioxide (UO2) pellets encased in zirconium alloy cladding, designed for insertion into nuclear reactor cores. It falls under HTS 8401.30.00.00 as a complete fuel cartridge for nuclear reactors, prior to irradiation. These cartridges generate heat through controlled fission when activated.
MOX Plutonium-Uranium Fuel Cartridge
Non-irradiated mixed oxide (MOX) fuel cartridge combining plutonium and uranium oxides in pellet form within metal cladding for light water reactors. Falls under HTS 8401.30.00.00 as a non-irradiated fuel element for nuclear reactors. Used to recycle plutonium from spent fuel, extending nuclear fuel cycle.
Fuel Element End Plug Assembly
Welded end cap assembly made of zirconium alloy for sealing non-irradiated nuclear fuel cartridges, preventing gas release and maintaining structural integrity. Classified under HTS 8401.30.00.00 as parts of fuel elements for nuclear reactors. Features precise tolerances for helium fill ports and spring attachment.
Silicon Carbide TRISO Fuel Particle Cartridge
Non-irradiated TRISO (TRi-structural ISOtropic) fuel cartridge containing thousands of silicon carbide-coated uranium oxide/ carbide particles embedded in graphite matrix for high-temperature gas reactors. Under HTS 8401.30.00.00 as advanced nuclear fuel element. Offers extreme fission product retention up to 1600°C.
Zircaloy-4 Fuel Cladding Spacer Grid
Non-irradiated Zircaloy-4 spacer grid assembly that positions and supports fuel rods within nuclear fuel cartridges, maintaining coolant flow spacing. Classifies under HTS 8401.30.00.00 as parts of non-irradiated fuel elements. Features Inconel springs for rod retention and precise cell tolerances.