Ukraine won approval today for $215million in critically needed loans to expand two nuclear power stations that will replace the electricity lost when the last reactor at the Chernobyl power plant shuts down for good this month.In a victory that comes with strict conditions for President Leonid Kuchma, the board of the European Bank for Reconstruction and Development voted in London to extend the loans to complete two nuclear units at the existing Rivne and Khmelnitsky power stations in Ukraine.