Emergency Preparedness and Incident Response
Planning basis
Emergency preparedness starts with hazard assessment and a classified emergency plan with defined intervention levels. Know the concepts of emergency planning zones, the distinction between precautionary action and urgent protective action, and the use of operational intervention levels based on measurable field readings.
Response actions
Sheltering, evacuation, iodine thyroid blocking, food and water restrictions, and decontamination. Know the difference between a notification (inform the authorities) and a reportable event (formal report within a set time). Distinguish drills, exercises and actual activations.
Traps
- Confusing dose limits with emergency reference levels - emergencies use reference levels.
- Assuming evacuation is always preferred over sheltering (sheltering may be safer for short releases).
- Ignoring the role of the incident commander and the on-scene controller.
- Forgetting that lessons learned must be tracked to closure.
Rule of thumb
For a short-duration release, sheltering is often the default protective action; evacuation is chosen when the release is prolonged or sheltering is inadequate.
Worked example
A field team measures 10 mSv/h at 1 m from a source and the operational intervention level for evacuation is 1 mSv/h. The reading exceeds the level, so the protective action is triggered and the incident commander is notified.