Safety_Series_041_1975 - gnssn - International Atomic Energy ...

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This publication is no longer valid Please see http://www.ns-iaea.org/standards/ 68 APPENDIX III United States of Am erica Estimated doses that might be received by persons in the neighbourhood of Hanford [20]: factors used for calculating radiation doses The critical organs of persons receiving radiation doses from environmental sources in the Hanford environs were known from experience to be the total body, bone, GI tract, and thyroid. Study and experience have shown that a m ajor portion (90 to 95%) of BONE Z rr SOURCE NUCLIDE FOOD, ETC. /•ALL OTHER -SEAFOOD - FISH "GAME BIRDS "MILK -M E A T -WATER - E X T 7 ALL OTHER ■ -SEAFOOD ' m ilk 'WATER -EXT. 7 PER CENT OF STANDARD 20 40 60 80 100 500 mrem PER YEAR AEC-FRC 170 mrem PER YEAR AEC-FRC -ALL OTHER -WATER E3S3-EXT7 500 mrem PER YEAR AEC-FRC giHBHHm--VEGETABLES HIM III I I I I MILK -W A TE R 500 mrem PER YEAR AEC-FRC FIG . 1. Estim ated doses to th e A verage Richland Resident, 1969.
This publication is no longer valid Please see http://www.ns-iaea.org/standards/ APPENDIX III 69 radiation doses in the Hanford environs are contributed by a relatively few radionuclides: 24Na, 32P, 51Cr, 64Cu, 65Zn, 76As, 131I, 239Np and rare earths plus yttrium fraction. To ease the calculation of the radiation dose contributed by each of these radionuclides to the various critical organs, a table of factors based on the organ dose received from a unit intake (1 jtiCi) of each specific radionuclide was prepared (Table XIV). The parameters set forth in ICRP Publication No. 2 and in the FRC Reports were used in preparing this table. Many of these factors were tabulated previously by Vennart and Minski and published'in the British Journal of Radiology. NUCLIDE SOURCE FOOD, ETC PER CENT OF STANDARD 20 40 60 80 100 1500 mrem PER YEAR A EC-FR C 500 mrem PER YEAR AEC-FRC , ALL OTHER -EGGS ^ O f r u it&veg : \MILK MEAT "FISH -WATER - EXT. y 1500 mrem PER YEAR A EC -FR C 1500 mrem PER YEAR AEC-FRC FIG . 2. E stim ated doses to th e M axim um In d ivid ual, 1969.
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