Monitoring of exposures of aircrew members of airline operators registered in the Czech Republic has been performed since 1998. The individual effective doses are calculated using the computer code CARI annually. The calculations are based on information about participation of aircrew members on the specific flights and on the parameters describing the typical flight profiles of the flights; the latter is regularly verified with control measurements performed onboard aircraft. The results show that (1) the average annual effective doses in the period from 1998 to 2017 range from 1.3 to 2.1 mSv, (2) the maximum effective dose of a crew member is 5.7 mSv and (3) the annual collective effective doses range from 1.3 to 4.1 manSv. Combined relative uncertainty of the results is ~25%.
- MeSH
- dávka záření MeSH
- kalibrace MeSH
- kosmické záření * MeSH
- letadla MeSH
- letecké a kosmické lékařství metody MeSH
- letectví * MeSH
- lidé MeSH
- monitorování radiace metody normy MeSH
- pracovní expozice analýza MeSH
- radiační ochrana metody MeSH
- reprodukovatelnost výsledků MeSH
- sluneční aktivita MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
Long-term measurements using silicon radiation spectrometer Liulin on board commercial aircraft have been performed since 2001; results were put into a new database, which covers more than 4500 flights with more than 130 000 measurements. Methodology and tools were developed to normalize the data with respect to latitude and altitude and thus enable comparison with other radiation detectors and with model calculations. This capability is demonstrated using data from the neutron monitor at Lomnický štít. Instead of providing data files for individual measurement period, two software solutions are delivered. First is a web-based user interface for visualizing and downloading arbitrary time window of interest from the database hosted at http://cr10.odz.ujf.cas.cz. The second is a set of interactive Python notebooks available at GitHub. Those implement the calibration, normalization and visualization methods-so the outputs can be tailored to user needs. The software and data are provided under GNU/CC license.
- MeSH
- databáze faktografické MeSH
- dávka záření MeSH
- internet MeSH
- kalibrace MeSH
- kosmické záření * MeSH
- křemík chemie MeSH
- letadla * MeSH
- letecké a kosmické lékařství MeSH
- letectví MeSH
- monitorování radiace statistika a číselné údaje MeSH
- nadmořská výška * MeSH
- neutrony * MeSH
- radiační expozice MeSH
- sluneční aktivita MeSH
- software MeSH
- zeměpis MeSH
- Publikační typ
- časopisecké články MeSH
Aircrew members and passengers are exposed to increased rates of cosmic radiation on-board commercial jet aircraft. The annual effective doses of crew members often exceed limits for public, thus it is recommended to monitor them. In general, the doses are estimated via various computer codes and in some countries also verified by measurements. This paper describes a comparison of three cosmic rays detectors, namely of the (a) HAWK Tissue Equivalent Proportional Counter; (b) Liulin semiconductor energy deposit spectrometer and (c) TIMEPIX silicon semiconductor pixel detector, exposed to radiation fields on-board commercial Czech Airlines company jet aircraft. Measurements were performed during passenger flights from Prague to Madrid, Oslo, Tbilisi, Yekaterinburg and Almaty, and back in July and August 2011. For all flights, energy deposit spectra and absorbed doses are presented. Measured absorbed dose and dose equivalent are compared with the EPCARD code calculations. Finally, the advantages and disadvantages of all detectors are discussed.
- MeSH
- absorpce radiace MeSH
- design vybavení MeSH
- kosmické záření * MeSH
- letadla přístrojové vybavení MeSH
- lidé MeSH
- monitorování radiace přístrojové vybavení MeSH
- polovodiče MeSH
- pracovní expozice analýza normy MeSH
- radiační expozice MeSH
- sluneční aktivita MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- srovnávací studie MeSH
This paper discusses an intercomparison campaign performed in the mixed radiation field at the CERN-EU (CERF) reference field facility. Various instruments were employed: conventional and extended-range rem counters including a novel instrument called LUPIN, a bubble detector using an active counting system (ABC 1260) and two tissue-equivalent proportional counters (TEPCs). The results show that the extended range instruments agree well within their uncertainties and within 1σ with the H*(10) FLUKA value. The conventional rem counters are in good agreement within their uncertainties and underestimate H*(10) as measured by the extended range instruments and as predicted by FLUKA. The TEPCs slightly overestimate the FLUKA value but they are anyhow consistent with it when taking the comparatively large total uncertainties into account, and indicate that the non-neutron part of the stray field accounts for ∼30 % of the total H*(10).
- MeSH
- dávka záření * MeSH
- design vybavení MeSH
- Evropská unie MeSH
- kalibrace MeSH
- monitorování radiace přístrojové vybavení metody MeSH
- neutrony MeSH
- protony MeSH
- radiační ochrana přístrojové vybavení metody MeSH
- synchrotrony MeSH
- vystavení vlivu životního prostředí analýza MeSH
- Publikační typ
- časopisecké články MeSH
- srovnávací studie MeSH
- MeSH
- dávka záření * MeSH
- doprava MeSH
- Evropská unie MeSH
- hygiena záření MeSH
- letecké a kosmické lékařství MeSH
- letectví * pracovní síly MeSH
- lidé MeSH
- radiometrie * metody přístrojové vybavení využití MeSH
- referenční standardy MeSH
- směrnice jako téma MeSH
- statistika jako téma MeSH
- zákonodárství jako téma MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
- Slovenská republika MeSH
