A statistical evaluation on the cosmic radiation doses on aircrews flying over South America and Caribbean regions
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2019
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INTERNATIONAL CONFERENCE ON DOSIMETRY AND ITS APPLICATIONS, 3rd
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Introduction
There are substantial researches on the cosmic radiation doses received by aircrew on their
typical fl ight workload. Most part of these studies was made by measurements onboard aircrafts
of some specifi c companies in stablished routes. A recurrent question from countries over South
America and Caribbean regions is related on the signifi cance of doses accumulated by aircrews
over this region and if those magnitude justifi es a specifi c radiation protection procedure.
Methods
The evaluation was made by statistical analysis using CARI-6 aircrew radiation dose code and
the data are derived from comprehensive records of registered fl ights performed in the South
America and Caribbean airspace between 29,000 and 41,000 feet, performed from March 7 to
20, 2009. The analysis of this sample was composed of 80,548 route calculations totalizing
53,163 hours of real fl ights, by means of calculation of each track performed by aircrafts
between aeronautic navigation waypoints.
Results
The analysis identifi es that the typical group of fl ight crew operating over this region receives
mean dose rates ranging from 2.65 μSv/h to 2.95 μSv/h depending on the solar cycle. This
distribution, integrated over typical workload from Brazilian aircrews results on annual doses
ranging from 1.45 mSv to 1.67 mSv.
Conclusions
The results demonstrate that the typical aircrew fl ying over this region exceeds the annual
radiation limit for public (1 mSv). The statistical analysis also shows that this is the case
of more than 96% of the aircrew fl ying with this fl ight routine and workload. The presented
results can be used by local authorities of countries over this region as a basis to evaluate the
convenience on adoption the recommendation from ICRP Publication 132 regarding radiation
protection recommendations for aircrews.
Como referenciar
FEDERICO, CLAUDIO A.; GONÇALEZ, ODAIR L.; PAZIANOTTO, MAURICIO T.; DIAS, ARTHUR F.; PRADO, ADRIANE C.M.; CALDAS, LINDA V.E. A statistical evaluation on the cosmic radiation doses on aircrews flying over South America and Caribbean regions. In: INTERNATIONAL CONFERENCE ON DOSIMETRY AND ITS APPLICATIONS, 3rd, May 27-31, 2019, Lisboa, Portugal. Abstract... Lisboa, Portugal: C2TN, Instituto Superior Técnico, Universidade de Lisboa, 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/31022. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.