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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If general nuclear reactor core grid plates
Non-fuel-specific support grids classify under broader nuclear reactor parts heading.
If imported as alloy steel bar stock before fabrication
Low-alloy steel bars for subsequent machining fall under Chapter 72 iron/steel articles.
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Import Tips & Compliance
• Verify grid strap thickness (±0.001") and dimple height specs; provide fretting wear test data
• Include fuel assembly design locus documentation
• Common error: classifying as general reactor internals
Related Products under HTS 8401.30.00.00
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ZIRLO Fuel Rod Cladding Tube
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Fuel Element End Plug Assembly
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Silicon Carbide TRISO Fuel Particle Cartridge
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