Frequent Questions

How do officials know when it is time to carry out protective actions?

When a radiation emergency occurs, officials will use available information and computer models to quickly predict how much radiation people could potentially receive. They then use the PAGs to determine what safety measures can be taken to prevent that exposure.

In other words, PAGs are general guidelines for deciding when specific steps are need to prevent people from being exposed to a level of radiation that might be hazardous to health.

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