Dosimetry of liquidators in 14 years after the Chernobyl accident: problems and accomplishments

The numerous cohort of Chernobyl liquidators is very factual subject for epidemiological follow up studies. Two novel approaches are studied: 1) development of the universal dosimetry method that could be successfully applied to any concerned subject including the diseased; 2) careful use of existing official dose records after rigorous assessment of their quality and uncertainty. Problems of development and application of the universal method - soft expert assessment of doses -are analysed in the framework of the first approach. For the second approach, problems of verification of official dose records with respect to detection of possible falsification and retrospective determination of uncertainties are studied