Radiation emergencies may be intentional (e.g., caused by terrorists) or unintentional. If a radiation emergency occurs, you can take actions to protect yourself, your loved ones, and your pets. The best way to protect yourself in a radiation emergency is to get inside, stay inside, and stay tuned.
During any radiation emergency, follow the radiation protection principles of time, distance, and shielding. Limit your time exposed to radiation, stay as far away as possible from a radioactive source, and shield yourself from radiation by going deep inside a sturdy building.

Such details provide a deeper understanding and appreciation for Preventing Radiation Exposure In Disaster Scenarios.
Protective actions in the early phase are aimed at avoiding inhalation of gases or particulates in a plume and minimizing external exposure. The Intermediate Phase may overlap with and/or follow the early phase response within as little as a few hours and can last for weeks or months.

It provides planning standards and guidance for communities and offsite response organizations near commercial nuclear plants to prepare for radiological disasters.
From the Centers for Disease Control and Prevention (CDC) During a radiation emergency, the most important steps you can take are to get inside or take shelter, stay inside to reduce your...