A nuclear detonation creates an explosion with intense light and heat, a damaging pressure wave, and widespread radioactive material that can contaminate the air, water, and ground surfaces for miles around. All nuclear devices cause deadly effects when exploded.
FEMA gives these 3 guidelines:
- Get Inside!
- Stay Inside!
- Stay tuned for instructions!
The three factors for protecting yourself from radiation and fallout are distance, shielding, and time.
- Distance - the more distance between you and the fallout particles, the better. An underground area such as a home or office building basement offers more protection than the first floor of a building
- Shielding - the heavier and denser the materials - thick walls, concrete, bricks, books, and earth - between you and the fallout particles, the better
- Time - fallout radiation loses its intensity fairly rapidly. In time, you will be able to leave the fallout shelter. Radioactive fallout poses the greatest threat to people during the first two weeks, by which time it has declined to about one percent of its initial radiation level