Interlaboratory comparisons at protection level with transfer ionization chamber using radiation quality 137Cs

This paper presents the methodology used and the results obtained for the inter-laboratory comparisons performed by the Secondary Standards Dosimetry Laboratory (LSCD) from the Servicio Geologico Colombiano (SGC) in 2016 and 2017. The comparisons were performed with the Cuban LSCD of Centro de Proteccion e Higiene de las Radiaciones (CPHR), and the Dosimetry Laboratory of the International Atomic Energy Agency (IAEA), by means of the calibration of transfer ionization chambers in terms of the quantity air Kerma with a 137 Cs beam. Each laboratory performed the calibration following their own established procedure. The results were satisfactory for both comparisons, ensuring the traceability and reliability of the calibration of instruments used with radiological protection purposes all around the country.