1.   The events included radioactive leaks, unplanned shutdowns and component failures, as well as vandalism, drug abuse and unauthorized use of firearms.

2.   The transporters are designed to withstand accidents and until recently the Govenrment ruled out any possibility of a radioactive leak.

3.   Another, he said, was that parents would allow buses to take their children from schools to designated evacuation zones after a radioactive leak.

4.   Neither Russian nor Norwegian authorities have found any evidence of radioactive leaks.

5.   Ontario Hydro said it shut down a nuclear reactor at its Pickering nuclear power station east of Toronto because of a radioactive leak.

6.   Radioactive leaks into ground water have led the lab in Upton to close its High Flux Beam nuclear reactor temporarily.

7.   The plant had been closed since February, when a rupture in a steam generator caused a radioactive leak that officials said posed no public health threat.

8.   The plant had been closed since last February, when a tube ruptured in a steam generator, causing a radioactive leak.

9.   The officials expressed concern that potential radioactive leaks could cause problems in Mexico but deflected criticisms that their request was hypocritical.

a. + leak >>共 168
radioactive 12.33%
small 6.56%
possible 4.37%
new 3.38%
chemical 2.98%
slow 2.78%
minor 2.78%
major 2.58%
alleged 2.19%
serious 1.79%
radioactive + n. >>共 250
material 23.41%
waste 17.38%
substance 4.40%
isotope 2.97%
leak 2.97%
iodine 2.58%
element 2.35%
contamination 2.25%
dust 1.82%
fallout 1.77%
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