Frequently Asked Questions (FAQs)
Regarding Nuclear Explosions

FAQs for Ventura County residents and guests.

Introduction to Radiation 

What is Radiation?
FAQs About a Nuclear Blast
Radioactive Contamination & Radiation Exposure
Sheltering in Place During a Radiation Emergency
Facts about Evacuation During a Radiation Emergency
Radiation and Pregnancy
Population Monitoring after a Release of Radioactive Material

Radiation Concepts: Decontamination

Use of Shower for External Decontamination
Decontamination Using Water from Fire Trucks
Decontamination Facilities and Procedures

Radiation Concepts: Radiation Safety

Factors that Decrease Radiation from Exposure: Time, Distance, Shielding 
Radiation Shielding - Animation
Types of Ionizing Radiation and Shielding Required 
Video: Types of Ionizing Radiation and Shielding Required

Radiation Concepts: Personal Protective Equipment (PPE)

The Difference Between Respirators and Surgical Masks 
Respirator Safety. Donning (Putting on) and Doffing (Taking off) and User Seal Checks

Radiation Concepts: Radiation Survey Equipment

Radiation Detection Devices 
How to Perform a Survey for Radiation Contamination

Potassium Iodide (KI)
Use in Radiation Protection 

Frequently asked questions on potassium iodide (KI)
Use of potassium iodide during radiological emergencies: information for the public

Disaster Information for Pet Owners

Animals in Public Evacuation Centers

Nuclear Explosions

Nuclear Explosion: Mushroom Cloud
Approximate Prompt and Delayed Fallout Effects - Illustration 
Zones of Damage after Nuclear Explosion: Generalized
Blast Range and Significant Effects 
Estimated Fallout Pattern from Nuclear Air Burst 
Factors That Affect Fallout 
Fallout: Relative Rate of Decline of Radioactivity After Nuclear Explosion 
How Buildings Provide Shielding from a Nuclear Explosion

Additional Links

Lawrence Livermore National Laboratory
Federal Emergency Management Agency (FEMA)
Centers for Disease Control and Prevention (CDC)
Lessons Learned Information Sharing ( is a Department of Homeland Security/Federal Emergency Management Agency program
Click here to read Ventura County Public Health's 18-page educational guide on how to survive a nuclear explosion. Available in both English and Spanish.

Radiation Concepts: The Basics

Video: Radiation Principles 
Video: Types of Ionizing Radiation and Shielding Required 
External Contamination: Internal Contamination:
Dose Estimator for Exposure: 3 Biodosimetry Tools 
Dose Rate Effect of Radiation Exposure
Ionization - Animations
Types of Ionizing Radiation and Shielding Required
Electromagnetic Radiation: Ionizing and Non-ionizing

© 2013 County of Ventura, California. All Rights Reserved.