Thorium Lantern Mantle Residue
Waste residues from manufacturing gas lantern mantles impregnated with thorium nitrate, retaining thorium-232 daughters. Fits 2844.44.00.00 per radioactive residues definition.
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• Often exempt under low activity but declare fully; historical import records aid classification; incineration residues may shift categories
Related Products under HTS 2844.44.00.00
Uranium Mill Tailings Residue
Radioactive residues from uranium ore processing mills, consisting of tailings containing thorium-230 and radium-226 decay products. Classified under HTS 2844.44.00.00 as radioactive residues per Chapter 28 Note 4(f), distinct from pure isotopes or compounds.
Plutonium Processing Radioactive Sludge
Sludge residues from nuclear fuel reprocessing containing plutonium-239 and fission byproducts like cesium-137. Falls under 2844.44.00.00 as radioactive residues from Chapter 28 Note 4(f), not pure compounds.
Fission Product Recovery Residue
Residues from extracting fission products like strontium-90 and cesium-137 from spent nuclear fuel, retaining mixed radionuclides. Classified in 2844.44.00.00 per Note 4(f) for radioactive residues.
Radium Scale from Pipe Cleaning
Radioactive scale deposits containing radium-226 removed from oilfield pipes during cleaning operations. Qualifies as 2844.44.00.00 radioactive residues under Chapter Note 4(f).
Decommissioned Reactor Coolant Residue
Evaporated residues from reactor coolant containing tritium, cobalt-60, and activation products. Covered by HTS 2844.44.00.00 as radioactive residues per Note 4(f).
Medical Cyclotron Target Residue
Residues from bombarded cyclotron targets used for Mo-99/Tc-99m production, containing residual radionuclides. Classed under 2844.44.00.00 for radioactive residues.