Vu que Hypoc n'a plus l’air de traîner son stétoscope sur ce forum, je m'y colle.
Voici des infos sérieuses (sorry, in English) en provenance de
http://www.hps.org/publicinformation/at ... ights.html
Radiation Exposure During Commercial Airline Flights
We have summarized the following information from the articles referenced:
Feng YJ, Chen WR, Sun TP, Duan SY, Jia BS, Zhang HL. Estimated cosmic radiation doses for flight personnel. Space Med Med Eng 15(4):265–269; 2002.
The average effective dose rate of all flights of Xinjiang Airlines from 1997 to 1999 was 2.38 µSv h-1.
The average annual cosmic radiation dose for flight personnel was 2.19 mSv.
Annual individual doses of all monitored flight personnel are well below the limit of 20 mSv y-1 recommended by the International Commission on Radiological Protection (ICRP).
Bottollier-Depois JF, Chau Q, Bouisset P, Kerlau G, Plawinski L, Lebaron-Jacobs L. Assessing exposure to cosmic radiation during long-haul flights. Radiat Res 153(5 Pt. 1):526–532; 2000.
The lowest dose rate measured was 3 µSv h-1 during a Paris-Buenos Aires flight.
The highest rates were 6.6 µSv h-1 during a Paris to Tokyo flight and 9.7 µSv h-1 on the Concorde in 1996–1997.
The corresponding annual effective dose, based on 700 hours of flight for subsonic aircraft and 300 hours for the Concorde, can be estimated at between 2 mSv for the least exposed routes and 5 mSv for the more exposed routes.
Waters M, Bloom TF, Grajewski B. The National Institute for Occupational Safety and Health/Federal Aviation Administration (NIOSH/FAA) working women's health study: Evaluation of the cosmic-radiation exposures of flight attendants. Health Phys 79(5):553–559; 2000.
Radiation dose levels represent a complex function of duration of flight, latitude, and altitude.
Based on data collected for this study, radiation dose levels that would be experienced by a flight crew are well below current occupational limits recommended by the ICRP and the FAA of 20 mSv y-1.
The National Council on Radiation Protection and Measurements (NCRP) recommends a monthly equivalent dose limit of 0.5 mSv. The ICRP recommends the radiation limit during pregnancy be 1 mSv.
Only flight crews flying both a large number of hours during pregnancy (for example, 100 hours in a month) and strictly the highest dose-rate routes (typically global routes such as United States to Buenos Aires or United States to Tokyo) would exceed the NCRP monthly guideline.
Friedberg W, Copeland K, Duke FE, O'Brien K 3rd, Darden EB Jr. Radiation exposure during air travel: Guidance provided by the FAA for air carrier crews. Health Phys 79(5):591–595; 2000.
Seattle to Portland: 0.03 mSv per 100 block hours
New York to Chicago: 0.39 mSv per 100 block hours
Los Angeles to Honolulu: 0.26 mSv per 100 block hours
London to New York: 0.51 mSv per 100 block hours
Athens to New York: 0.63 mSv per 100 block hours
Tokyo to New York: 0.55 mSv per 100 block hours
Oksanen PJ. Estimated individual annual cosmic radiation doses for flight crews. Aviat Space Environ Med 69(7):621–625; 1998.
In this study, crew members averaged 673 block hours and pilots 568 block hours.
Average annual cosmic ray dose for cabin crews was 2.27 mSv.
Average annual cosmic ray dose for long-distance flight captains was 2.19 mSv.
Pour les recos australiennes voir ici :
http://www.arpansa.gov.au/radiationprot ... cosmic.cfm
Et pour la FAA, c'est ici :
http://www.faa.gov/data_research/resear ... y/reports/
Si ou veut comparer à une IRM, ou Imagerie par résonance magnétique, c'est vite vu, puisque on utilise un champ magnétique et pas des radiations. La comparaison n'a donc aucun sens.
Une radio pulmonaire c'est 0.1 mSv et un vol Paris New-York c'est entre 0.05 et 0.08 mSv, donc l'émission disait vrai.
Un autre site intéressant ici (en Français) :
http://www.sievert-system.org/WebMaster ... ition.html
Là où j'ai pas de bol, c'est que les astronautes sont bien plus exposés.
A ma connaissance, aucune enquête épidémiologique n'a montré d'augmentation de risque d'apparition de cancer chez les pilotes. Il semble sensé de laisser les femmes enceintes au sol mais pas qu'à cause des radiations.
Bon vol.
Spoutnick
), plusieurs sont décédés prématurément, pas forcément d'un cancer mais prématurément malgré tout (Jack Swigert / Apollo 13, Stu Roosa / Apollo 14, Jim Irwin / Apollo 15, Ron Evans / Apollo 17). Soit 4 personnes pour un total de 24 qui ont été au delà. Sans oublier Al Shepard (Apollo 14), décédé d'une leucémie, certes à l'âge canonique de 75 ans, mais d'une leucémie quand-même.