Greenpeace leaked a report coming out of Austria yesterday that questions the safety of two nuclear plants meant to succeed reactors at Chernobyl in the Ukraine. The report to the Austrian government by Vienna University describes the Soviet-designed reactors, which are 80 percent completed, as “highly hazardous.” The London-based European Bank for Reconstruction and Development is meeting next week to decide whether to loan the Ukraine hundreds of millions of dollars to finish the reactors. Greenpeace seized on the report as evidence that the bank should instead encourage the Ukraine to develop other forms of power.