Archives2020V. 60. №6.pp. 635-646

Article

Evaluation of the Concentration of Gaseous Compound of Tritium in Places of Nuclear Tests at the Semipalatinsk Test Site О.

О. N. Lyakhova, S. N. Lukashenko, L. V. Timonova, N.V. Larionova, and D. V. Turchenko

Branch “Institute of Radiation Safety and Ecology” of the Republican State Enterprise of the National Nuclear Center of the Republic of Kazakhstan, Kurchatov, Kazakhstan

Abstract

The article considers issues related to the specifics of tritium (T) entering to the atmosphere at the territory of the Semipalatinsk test site (SIP). The studies were performed at places of nuclear tests conducting. It has been established that T in the air of STS is present as 2 forms – oxidized, as the tritiated water (HTO) and gaseous, as organic volatile compounds (Tgas). The lowest concentration of T in the air was noted at the «Experimental field» in places of ground and air explosions. The sites with a maximum concentration of T in the air are located on the «Balapan» site where underground nuclear tests had been conducted. It was shown that the specific activity of T in the surface soil layer in a number of research areas ranged from hundreds to tens of thousands Bq/kg. According to this, it has been suggested that soil can be considered as an important source of Tgas input in atmosphere.

Keywords

Air, tritium, places of nuclear test conducting, oxidized tritium compounds, gaseous tritium compounds

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