Abstract
The paper describes how the programme of individual monitoring (IM) of internal exposure (IE) at Shelter object (SO) was designed and what results were obtained in the framework of the programme for 5 y. The main dose-forming factors of IE at SO are intakes of radionuclides of transuranium elements, (90)Sr and (137)Cs. During designing the IM of IE programme, the contribution of each radionuclide was estimated for different types of works and intake paths. The different types of direct and indirect biophysical measurements that could be used for the purposes of IM of IE were analysed. The control of (239+240)Pu content in faecal samples was chosen as a basic type of control of IE. 'Dose per unit content' functions were used for the justification of the IM of IE programme; also, they were used for the assessment of doses of personnel at SO.
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