NRC Analysis Supports Japanese Protective Actions

Overnight, NRC analysts continued their review of radiation data related to the damaged Japanese nuclear reactors. The analysts continue to conclude the steps recommended by Japanese authorities parallel those the United States would suggest in a similar situation.

The Japanese authorities yesterday recommended evacuation to 20 kilometers around the affected reactors and said that people who live out to 30 kilometers should shelter in place (stay inside).

Those recommendations parallel the protective actions this country would suggest should dose limits reach 1 rem to the entire body and 5 rem for the thyroid, an organ particularly susceptible to radiation uptake.

A rem is a measure of radiation dose. The average American is exposed to approximately 620 millirems, or 0.62 rem, of radiation each year from natural and manmade sources.

Eliot Brenner
Public Affairs Director
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