[305834] Artigo – CBMRI – Congresso Brasileiro de Metrologia das Radiações Ionizantes

Resumo: This work reports the results obtained from the proficiency test involving 7 laboratories in Brazil. This exercise is about the calibration service of surface contamination monitors. The monitor has been calibrated to BS ISO 7503-3, the calibration factor in terms of surface emission rate. The proficiency test was conducted by the Brazilian National Laboratory of Ionizing Radiation Metrology (LNMRI / IRD) from December 2022 to May 2023. The extensive sources used were ¹⁴C, ¹³⁷Cs, ⁶⁰Co, ⁹⁰Sr/⁹⁰Y, ³⁶Cl and ²⁴¹Am. The result of this proficiency test was excellent, proving its need and the capacity of the Brazilian network in the calibration service for surface contamination monitors.