Estimation Of Accumulated Doses Due To Incorporation Of (90)Sr From Atomic Bomb Fall Out In Mostik/Kazhakstan Using Simple Models

A full scale dose reconstruction is very costly and beyond the resources of a low budget study like the NATO-Semipalatinsk project [1]. Nonetheless a course estimate of the (90)Sr doses accumulated in the years 1949-1995 has been tried based on two scenarios for the village Mostik close to the Semipalatinsk Nuclear Test Site. Scenario 1 assumes the observed body burden to be completely due to inhalation of radioactive particles at the rime of the first Soviet atomic bomb test in 1949. The scenario can serve to get an order-of-magnitude estimate of the maximum dose possibly perceived by the incorporation of radiostrontium. The second scenario assumes the body burden to be completely due to ingestion, intake starting in 1949. Reality will be best described by something in between the two scenarios. Real mean accumulated doses from incorporation of (90)Sr therefore will be somewhere between and 22 mSv. The mean accumulated doses are well within the limits set by international recommendations. However, it has to be noted that incorporation of radiostrontium only accounts for part of the total dose. Therefore dose reconstruction for the older inhabitants directly affected by the aboveground atomic weapons tests still needs further effort.