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Preparing for an Unplanned Radiation Event - page 24 / 141

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Radiation Doses and Dose Limits

Flight from Los Angeles to London         5 mrem

Annual public dose limit                               100 mrem

Annual natural background        300 mrem

Fetal dose limit 500 mrem

Barium enema           870 mrem

Annual radiation worker dose limit5,000 mrem

Heart catheterization (skin dose)    45,000 mrem

Life saving actions guidance (NCRP-116)    50,000 mrem

Mild acute radiation syndrome                   200,000 mrem

LD50/60 for humans (bone marrow dose)                350,000 mrem

Radiation therapy (localized & fractionated)       6,000,000 mrem

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