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3. Be Informed

Learn How to Shelter in Place

"Shelter-in-place" means to take immediate shelter where you are—at home, work, school, or in between. It may also mean "seal the room;" in other words, take steps to prevent outside air from coming in. This is because local authorities may instruct you to "shelter-in-place" if chemical or radiological contaminants are released into the environment. It is important to listen to TV or radio to understand whether the authorities wish you to merely remain indoors or to take additional steps to protect yourself and your family.

How do I prepare?

At home

At work

In general

How will I know when I need to "shelter-in-place"?

Fire or police department warning procedures could include:

Facilities that handle potentially dangerous materials, like nuclear power plants, are required to install sirens and other warning systems (flash warning lights) to cover a 10-mile area around the plant.

For more information, contact any of the following:

For checklists to help prepare to shelter-in-place in your home, at work, in your car, or at school or day-care, read How Do I Shelter-in-Place?

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Page last modified September 4, 2007


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“Safer Healthier People”
Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30333, USA
CDC Contact Center: 800-CDC-INFO (800-232-4636) • 888-232-6348 (TTY) • cdcinfo@cdc.gov
Director's Emergency Operations Center (DEOC): 770-488-7100