Residual radioactive contamination at the peaceful underground nuclear explosion sites “Craton-3″ and “Crystal” in the Republic of Sakha (Yakutia).
Author: Gedeonov AD, Petrov ER, Alexeev IN, Kuleshova VG, Savopulo ML, Burtsev IS, Shkroev VY, Arkhipov VI.
Reference: J Environ Radioact. 2002;60(1-2):221-34.
ISSN:
Keywords: peaceful underground nuclear explosion sites “Craton-3″ and “Crystal”, 137cs
Abstract: In this paper, results are reported on the concentrations and activity ratios of 137Cs, 239+240Pu and 238Pu in soils, lichen and bottom sediments collected at the peaceful underground nuclear explosion sites “Craton-3″ and “Crystal” (Republic of Sakha (Yakutia), North-East Siberia). At the “Craton-3″ site, 239- 240Pu concentrations in the range 6.2 mBq/g to 5.9 Bq/g in surface soils (0-5 cm) and 239+240Pu concentrations up to 7.4 Bq/g in lichen were observed. The 137Cs concentration in measured soils range from 0.52 to 216 Bq/g for the near-plume and from 1.65 to 21.5 Bq/g for the far-plume. In lichen, 137Cs concentration varied from a global background level up to 251 Bq/g. Radioactive contamination at “Crystal” demonstrates an extremely irregular distribution of 239,240Pu and 137Cs in environmental samples taken at locations within 150 m radius of the site. Further work on compiling detailed maps of radioactive contamination of the territory around “Craton-3″ and “Crystal” is discussed.
URL: http://www.ncbi.nlm.nih.gov/pubmed/11936609
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