Uranium Enrichment Decontamination and Decomissioning Fund Reauthorization Act of 2009 - Amends the Atomic Energy Act of 1954 to reauthorize, and increase the maximum mandatory amounts in, the Uranium Enrichment Decontamination and Decommissioning Fund.
Directs the Secretary of Energy to establish a program to pay any affected participant under the USEC Privatization Act a one-time sum payment of benefits in an amount to be determined by the Secretary.
Limits affected participants to persons who: (1) retired from active employment at one of the gaseous diffusion plants on or before the United States Enrichment Corporation (USEC) privatization date as vested participants in a pension; and (2) are employed by the USEC's operating contractor on or before the privatization date and are vested participants in a pension plan.
Directs the Secretary to develop, complete, and publish in the Federal Register a plan to re-enrich and sell certain cylinders of uranium tailings.