The annual site emergency demonstration exercise will take place at Dounreay on Wednesday 17 May 2017.
The Dounreay site alert will be sounded during the course of the exercise.
The exercise will also involve the use of pyrotechnics and members of the public may hear loud bangs and see smoke.
The public are not to take any action when the alarms sound.
For further information please contact Dounreay emergency arrangements on 01847 802535.