Dosimetria de radiações ionizantes em voos nacionais e internacionais de longa duração

Abstract

In the contemporary world, increasing globalization has intensified the growth of aviation crew members. In this context, the exposure of aircrew to cosmic radiation has become a relevant concern. The study of radiation doses received by these professionals is essential to ensure their safety and support appropriate regulations. The research compared the cosmic radiation doses received by aircrew using the EXPACS and IRSN software. The results showed similarity between the programs, with some discrepancies on specific routes. Among domestic routes, Florianópolis – Rio Branco and Natal – Rio Branco had the highest doses (up to 0.012 mSv). Among international routes, the flights Teresina – Hong Kong (0.089 mSv) and Guarulhos – Tokyo (0.052 mSv) showed the highest values, influenced by flight time and altitude. No route exceeded the limit of 20 mSv in five years, but some reached up to 10.25 mSv within this period. The Hp(10) dose was higher than the effective dose (E), as expected. The research reinforces the need for radiological protection for aircrew and the importance of legislation to limit exposure.