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EVOLUTION ACTUELLE CONCERNANT L'IRRADIATION HUMAINE PAR
CERTAINES COMPOSANTES MARINES


V. Patrascu et A.S. Bologa

Institute Roumain de Recherches Marines Constanta

Abstract
Adapting the Canadian model NEPTUN (ZACH, 1980), we calculated doses
on internal irradiation through molluscs and fish alimentary consum-
ption. We studied comparatively the doses accumulated by consumption
of molluscs and fish from Romanian Black Sea sector and from 
E-Central Atlantic Ocean (Mauritania, Namibia). Other estimates are 
made for the external irradiation due to sea water. Between 1987 and
1990, from 50 ?Sv.a-1, the internal irradiation decreased one order
of magnitude at least. The dose exposed to sea water decreased from
2.5-body and 93.6 ?Sv-skin, in 1986, to values ten times less for
the same period. The results in 1990 confirm an fluctuation at a
background level, without having the importance of the contributions
from other irradiation sources (terrestrial, medical and so on).