At a glance

  • During a radiation emergency, get inside as soon as possible.
  • Take off any clothes that were exposed to radiation, if you can.
  • Wash any body part exposed to radiation, if you can.

Overview

Examples of radiation emergencies include:

  • A nuclear power plant accident
  • A nuclear explosion
  • A dirty bomb

If something like this happens, you may be asked to get inside a building and take shelter. The walls of your home can block much of the harmful radiation, and radioactive materials become weaker over time. Staying inside for at least 24 hours can protect you and your family until it is safe to leave the area. Getting inside of a building and staying there is called “sheltering in place.”

If you are indoors during a radiation emergency

  1. Stay inside.
  2. Close and lock all windows and doors.
  3. Go to the basement or the middle of the building.
  4. Stay as far away from the walls and roof of the building as you can. Radiation settles on the outside of buildings.
  5. If possible, turn off fans, air conditioners, and forced-air heating units that bring air in from the outside.
  6. Close fireplace dampers.

If you are outside or in a vehicle

  1. Get inside a building right away. Brick or concrete multi-story building or basement are best, but being inside any building is safer than being outside.
  2. Carefully remove your outer layer of clothing before entering the building, if you can. Radioactive material can settle on your clothing and your body, like dust or mud.
  3. Once inside, go to the basement or the middle of the building. Radioactive material settles on the outside of buildings. The best thing to do is stay as far away from the walls and roof of the building as you can.
  4. Wash the parts of your body that were uncovered when you were outside. Then put on clean clothing, if you can.
  5. If you must be outside and cannot get inside immediately, cover your mouth and nose with a mask, cloth, or towel. This can help reduce the amount of radioactive material that could get inside your body.

If you have pets

Bring pets inside with you, if you can. Bring indoors and wipe any supplies from outside that your pets might need for at least 24 hours.

Decontamination

Wash your pet carefully with shampoo or soap and water and rinse completely. Wash your hands and face after washing your pet.

Pet food and supplies

Pet food in sealed containers (cans, bottles, boxes) will be safe for animals to eat. Wipe off pet food containers with a damp cloth or clean towel before opening them. Wash or wipe off pet bowls, dishes, and mats too.

Disaster shelters

Animals arriving at shelters as a result of a natural disaster need special care. They may have been exposed to contaminated soil and water. They may not have had access to safe food and fresh water and may be stressed and dehydrated. Some may be injured and/or ill.

Pet health

Stressed animals may or may not show signs of illness and may also exhibit behavioral disorders. Following some simple animal management and disease control guidelines can help improve animal health and reduce the risk of disease transmission and injury between animals and people.

If you have loved ones in other places

Stay where you are! Going outside to get loved ones could expose you and them to dangerous levels of radiation.

Schools, daycares, hospitals, nursing homes, and other places have emergency plans in place to keep people safe at the facility.

If someone needs to shelter with you

Providing shelter to someone who was outside during a radiation emergency can save their life without endangering your own.

Ask them to remove their outer layer of clothing before entering the building or shelter. Once inside, ask them to wash the parts of their body that were uncovered when they were outside.

Then ask them to put on clean clothing, if they can. This will help limit their radiation exposure and keep radioactive material from spreading.

At a glance

  • Getting inside of a building and staying there is called “sheltering in place.”
  • Staying inside for at least 24 hours can protect you and your family until it is safe to leave the area.
  • Always listen for additional instructions from emergency officials and radiation experts.

Decontamination

You could be contaminated with radioactive material if you are outside in an area when a radiation emergency happens.

Radioactive contamination can spread in the same way that dust or mud can be tracked into the home. It can also spread to another person or object.

Radioactive material can land on

  • People
  • Buildings
  • Cars
  • Roads

It is important to get radioactive material off your body as soon as possible to lower your risk of harm. Removing radioactive material from a person, object, or place is called decontamination.

Decontaminating pets

If your pet was outside, bring your pet inside.

  • Wash your pet carefully with shampoo or soap and water. Then rinse completely.
  • Wear waterproof gloves and a dust mask, if you can.
  • Cover your and your pet’s cuts and scrapes when washing your pet.
  • Wash your hands and face after washing your pet.

Decontaminating your home

Emergency responders or local officials will let you know if you need to decontaminate your home. They will give instructions for cleaning inside and outside your home or shelter.

Other ways to stay safe while inside

Indoor air safety

  • Turn off fans, air conditioners, and forced-air heating units that bring air in from the outside, if possible.
  • Close and lock all windows and doors.
  • Close fireplace dampers.

Water, food, and medicine safety

  • Foods and drinks that are sealed or that were already inside are safe.
  • Public health, environmental protection or emergency management agencies will test drinking water supplies. They will make sure drinking water is safe.
  • Boiling tap water will not remove radioactive materials.
  • Washing and cleaning with tap water would is still safe.
  • If your medication was inside, continue taking it. If the container was outside, wipe off the container and continue taking it.

Ways to stay tuned

Radios

Having a battery-powered or hand crank emergency radio is a great start. A National Oceanic Atmospheric Administration (NOAA) weather radio will be one of the best ways to stay tuned.

It is important to have an emergency radio for any emergency situation. If your emergency radio uses batteries, be sure to have extra batteries on hand in your emergency preparedness kit. Get more information on emergency preparedness kits.

Other ways

Officials may also use email or verified social media accounts for updates.

Depending on the size and scope of the radiation emergency, it may be difficult to complete a phone call. Try to use text messages (SMS) if possible.

Keep electronics charged or batteries ready

Make sure your electronic devices are working. If your electronic devices with batteries are not working, you can try taking the batteries out of the device, putting them back in, and restarting the device as normal.

Other devices may require resetting switches and circuit breakers to work again. Do not go outside to reset breakers.

In a nuclear explosion an electromagnetic pulse, or EMP, is possible. An EMP is a side effect of a nuclear detonation that produces a surge of energy. This surge can damage electronic devices.

How to evacuate

Radiation levels will decrease with time as you shelter in place. Emergency response officials will give instructions on how to evacuate your area when it is safe. Other important information will include:

  • When to evacuate
  • Evacuating with pets
  • Available shelters
  • Returning home after an evacuation

National Center for Environmental Health

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