The U.S. General Accounting Office (GAO) is fretting about the safety of two Soviet-designed nuclear reactors in Cuba. The two 440-megawatt units, now under construction near the port city of Cienfuegos--just 250 miles south of Miami--are due to come on line in 1995 and 1997 respectively.

The reactors are not of the very unsafe Chernobyl type. But the GAO says they lack adequate safety features. What's more, spare parts are scarce in the troubled Commonwealth of Independent States.