Effects of cosmic radiation in aircrafts: A discussion about aircrew over South America

Abstract

This paper has discussed the guidelines included in the documents of the International Commission on Radiological Protection (ICRP) on radiation protection applicable to aircraft and crew, and this is a brief report of the e olution of studies in this eld of acti it , as well as the regulations and recommendations alread adopted b member countries of the uropean nion, Canada, and the nited tates of merica ome peculiarities of the Brazilian airspace and legislation applicable to the work with ionizing radiation are also presented, discussing the general aspects of radiological protection applicable to aircraft crew in Brazil

Radiation measurements onboard aircraft in the South Atlantic region

“…1 Figure 1. Map of the geomagnetic field (total intensity, expressed in nT), obtained from IGRF2011 model [9], for 01 Oct 2010 at 12 km altitude [6].…”

“…This recommendation was later described in more detail in subsequent recommendations [3,4] that were later adopted by the European Union and Canada. A wider discussion about this subject can be found in the references [5,6].…”

The prototype of a detector for monitoring the cosmic radiation neutron flux on ground

“…Great effort is required to better understand the dose levels received by sensitive equipment, onboard computers and aircraft crew members in Brazilian airspace, because a large region of South America and Brazil is subject to the South Atlantic Magnetic Anomaly (SAMA) [1]. High energy neutrons are produced by interactions between primary cosmic rays and atmospheric atoms and undergo moderation, resulting in a wide energy spectrum, ranging from thermal energies to several hundreds of MeV [2,3], that is known as the cosmic-ray-induced neutron spectrum (CRINS).…”

O estudo de caso da dose efetiva de radiação ionizante no voo da aeronave T-27 Tucano da Força Aérea Brasileira

“…Desde então, diferentes estudos sobre a radiação durante os voos têm sido abordados (BARTLETT, 2004;FEDERICO et al, 2012;FORTES et al, 2017;KYLLONEN;LINDBORG;SAMUELSON, 2001;LINDBORG et al, 2004), uma vez que a aviação está diretamente envolvida nesse processo, pois as aerovias são o próprio fluido atmosférico. Dessa forma, mesmo havendo uma atenuação do feixe por parte das camadas da atmosfera, as pessoas estão expostas à radiação durante todos os voos, pois esta sempre chega à Terra, assim como os aeroviários ficam expostos à radiação cósmica secundária em voos, uma vez que a atmosfera terrestre a degrada (OKUNO, 2013).…”