TMI EMERGENCY SIREN TEST SCHEDULED FOR DEC. 1
Sirens to sound for three minutes at 12:15 p.m.
LONDONDERRY TWP, PA (Nov. 29, 2016) — Exelon  Generation will conduct its semi-annual, full volume test of the  emergency warning sirens surrounding Three Mile Island Generating  Station on Thursday, Dec. 1 at approximately 12:15 p.m. This is one of  two semi-annual tests performed each year.
The  TMI emergency warning siren system consists of 96 sirens located in  parts of Cumberland, Dauphin, Lancaster, Lebanon and York counties that  are located within a 10-mile radius of TMI. The sirens are not a signal  to evacuate, but a warning to tune to a local Emergency Alert Broadcast  television or radio station. County emergency management authorities  activate the sirens, which can be used in the event of any emergency,  including severe weather. 
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