Title 42 › CHAPTER 23 — DEVELOPMENT AND CONTROL OF ATOMIC ENERGY › SUBCHAPTER X — INTERNATIONAL ACTIVITIES › § 2160d
Federal regulators may only allow the export of highly enriched uranium (HEU) for use as fuel or targets in research or test reactors if three conditions are met. First, there must be no lower-enriched reactor fuel or target (less U-235) that can be used instead. Second, the foreign recipient must promise to switch to the lower-enriched option as soon as it can. Third, the U.S. government must be actively working to develop such an alternative fuel or target. There is a special set of rules for HEU sent abroad to make medical isotopes. The Commission can license exports to Canada, Belgium, France, Germany, and the Netherlands for that purpose if the recipient country assures the U.S. that the uranium will only be used to make medical isotopes and if the HEU will be irradiated only in reactors that already use lower-enriched fuel or have an agreement to convert when possible. The Commission must check transport, storage, and cleanup protections and can add safety rules, including limits on how much HEU can be in one shipment. The Secretary must arrange a National Academy of Sciences study about whether medical isotopes can be supplied without HEU and report to Congress within 5 years after August 8, 2005. Low-enriched uranium (LEU) use is considered feasible only if LEU targets have been developed and shown to work, enough LEU-based isotopes can meet U.S. needs, and the average total cost rise would be less than 10 percent. Once commercial non-HEU supplies can meet U.S. needs within that cost limit, the Secretary must certify that to Congress and the Commission will stop its special reviews. Starting 7 years after January 2, 2013, the Commission may not issue new HEU export licenses for medical isotope production, though that ban can be extended up to 6 years or temporarily suspended for up to 12 months under narrow certification and congressional approval rules. Definitions in one line each: alternative nuclear reactor fuel or target = fuel/target with less than 20% U-235; highly enriched uranium = uranium with 20% or more U-235; "can be used" = approved by the DOE program and workable without a big rise in reactor operating costs; medical isotope = materials like molybdenum-99, iodine-131, xenon-133, and similar radioactive products for diagnosis, treatment, or research.
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The Public Health and Welfare, Source: USLM XML via OLRC
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42 U.S.C. § 2160d
Title 42, The Public Health and Welfare
Last Updated
Sep 22, 2026
Release point: 119-110