(Londonderry Township, Dauphin County) -- Three Mile Island will test its emergency siren system today.
The first will take place at 12:15 this afternoon.
The second alarm sounding will happen an hour later.
The tests are a dry run for the 96 new sirens recently installed by TMI's owner, Exelon Generation.
Alarms stationed within a 10-mile radius around the power plant in Londonderry Township, Dauphin County, will sound for three minutes during each of the tests.
In a real emergency, the sirens are an indication to tune into an Emergency Alert System radio or TV station for the latest information.
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