Fast neutron personnel monitoring in India using CR-39 SSNTD

Personnel Monitoring Section, BARC conducts countrywide fast neutron personnel monitoring using CR-39 solid state nuclear track detector. About 1650 personnel working in a wide range of situations are being monitored presently for fast neutrons. Nearly 50% of the personnel monitored are working with isotopic neutron sources e.g. 241Am-Be (up to 740 Gbq source strength) in industry and the remaining are connected with nuclear fuel cycle. This paper describes our experience with this personnel neutron monitor and presents the analysis of the neutron equivalent doses received by the personnel working in research and associated with accelerators, during last 15 years and its contribution as compared to total equivalent dose. (author)