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Performance of personal dosimetry systems in India: insights from EURADOS interlaboratory comparison exercises
Suresh M Pradhan1,2, Madhumita Bhattacharya1, Munir S Pathan1,2
1Radiological Physics & Advisory Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
Abstract:
Bhabha Atomic Research Centre participated in the EURADOS Inter-comparison Exercises IC2022ph [Hp(10) and Hp(0.07)] and IC2022n [Hp(10] for assessment of external exposures, using the CaSO4:Dy-based thermoluminescent dosemeter (TLD) (indigenously developed) for photon and beta radiations and etched track neutron dosemeter, respectively. The performance of TLD personnel dosimetry system, assessed in accordance with ISO 14146:2018 and ANSI N13-11.2009 standards, is satisfactory. The results of the IC2022ph have enhanced confidence in the accuracy and reliability of the Hp(10) and Hp(0.07) algorithms used for TLD badge. Dose evaluation for the neutron dosimetry system was based on in-house developed imaging system. The performance of neutron dosemeter system, as assessed in this interlaboratory comparison, indicates a need to improve the quality of the detector material. Participation in the inter-comparison exercises underscores the reliability of dosimetry systems and highlights their effectiveness in accurately assessing external radiation exposures in India's personnel monitoring programs.
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