Three Mile Island Nuclear Plant Accident?

A small amount of radiation has been detected in a reactor building at the Three Mile Island nuclear power plant in central Pennsylvania. It was an accident.
Officials say there is no public health risk.
There was a disaster at the same place in 1979, could the same accident happen at the Three Mile Island?

This time it was just a leak.
Employees at the Three Mile Island Nuclear Plant were cutting pipes in a reactor building about 4 p.m. when a radiation alarm sounded, triggering the evacuation of 150 workers. The cause of the leak has not been found.

This does not appear to be an occupational threat nor a threat to the public health and safety.
It won't be like 1979.