1.   That would prompt a costly cleanup and incalculable delay in restarting the reactor.

2.   The owner, Niagara Mohawk Power Corporation, does not intend to restart the reactor until the cause of the initial failure has been identified.

3.   Both were caused by short circuits during testing prior to restarting the reactor, which was shut down in February.

4.   An operating license from the Nuclear Regulatory Commission would be required before the reactor could be restarted.

5.   An internal study by the company later concluded that workers may have moved faster than they should have, feeling pressure from supervisors to restart the reactor.

6.   Company officials had asked if they could restart the reactor last week, but NRC officials said no.

7.   Northeast has said it intends to restart two reactors at its largest Connecticut nuclear plant, Millstone, later this year.

8.   Northeast said it expects to ask the NRC for permission to restart one reactor by the end of the year.

9.   Once the gases are released under NRC safety guidelines, UT can reinstall the fuel rods and restart the reactor.

10.   Rupture also could spill spent fuel pellets into the reactor core, forcing a costly and time-consuming cleanup that would delay restarting the reactor.