Abstract：
:The major part of the liquid radioactive waste released by the Mayak Production Association (PA) radiochemical plant into the Techa river occurred in 1949-1951, but there is information on only one single radiochemical analysis of a water sample taken on 24 and 25 September 1951. These data are here used to assess the spectrum of radionuclides that were released between 1949 and 1951. For this purpose, details of the radiochemical methods of radionuclide extraction and radiometric measurements of beta-activity used at Mayak PA in the 1950s have been taken into account. It is concluded that the data from the radiochemical measurements agree with the theoretical composition of fission products in uranium after exposure times in the reactor (120 days) and subsequent hold times (35 days) that were typical for the procedures at that time. The results of the analysis are at variance with assumptions that underlie the current Techa river dosimetry system. They confirm the conclusion that the external doses to the Techa river residents in the critical period up to 1952 were predominantly due to short-lived fission products.
journal_name
Radiat Environ Biophysjournal_title
Radiation and environmental biophysicsauthors
Mokrov YGdoi
10.1007/s00411-003-0182-ykeywords:
subject
Has Abstractpub_date
2003-04-01 00:00:00pages
7-15issue
1eissn
0301-634Xissn
1432-2099journal_volume
42pub_type
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