In February 1997 the Nuclear Regulatory Commission promulgated an emergency final rule regarding the shipment of limited quantities of fissile material. Background information is presented on criticality concerns that existed under the previous regulations, and changes effective in the new rule are summarized. Potential impacts of these changes on DOE shipments of fissile material are discussed. An update of developments based on public comment and any modifications to these rules will be presented at the meeting in September.
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