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Region testing nuclear alerting system

The Region of Durham will hold its annual test of the nuclear alerting system on Monday, Nov. 25 and Tuesday, Nov. 26.

The system warns people in the event of an emergency at the nuclear generating stations in Clarington or Pickering.

The test will take place during daytime hours over the two days.

On Nov. 25, an auto dialer will call about 100,000 landline phone numbers within 10 kilometres of the nuclear generating stations. The calls will show as coming from 905-666-6291.

On November 26, the outdoor sirens will sound for up to one minute. The sirens are within three kilometres of the stations and will be heard by people who are outdoors and in that area.

Cell phone, radio and TV alerts will be tested by the Province of Ontario on Nov. 27.

Residents can find out how they may be alerted by looking up their address at

Regional officials caution this is just a test and residents don’t need to do anything if they hear an alert.

In a real emergency, hearing the sirens means you should go indoors and tune into local media outlets or official government channels for instructions.

The next test is scheduled for spring 2020.