Analysis and application of occupationally exposed dose estimation programs for aircrews
Objective To estimate and analyze the levels of occupational exposure of aircrews in China,and to provide scientific basis for strengthening occupational health management.Methods Through the FlightAware website,the flight data were collected of a total of 104 routes flying between airports with large passenger volume in China.Four kinds of cosmic radiation dose estimation programs CARI,SIEVERT,PCAIRE,and JISCARD-EX were compared and analyzed from the aspects of covering the number of airports in China,program user experience and example calculation of airline effective dose.Based on route logs,CARI-7A was applied to estimate the levels of occupational exposure of Chinese aircrews to cosmic radiation.Results The difference in the effective doses calculated by use of these four cosmic radiation dose estimation programs for the routes with different solar activity levels was statistically significant(M=7.52-180.98,P＜0.05).The annual effective dose estimated by PCAIRE for 68 routes from 2014 to 2021 was significantly higher than that estimated by CARI-7A(Z=2.52,P＜0.05).Based on CARI-7A,the annual effective doses from cosmic radiation to aircrews in China from 2014 to 2021 were estimated,being 1.26(0.57-2.35)mSv for flight attendants and 1.03(0.47-1.92)mSv for pilots.The effective dose from cosmic radiation to aircrews on a single flight on some high-frequency routes in China ranged from 0.57 to 6.88 μSv.Conclusions The level of occupational exposure of Chinese aircrews to cosmic radiation meets the requirements of national standards,but is higher than that of occupational exposure from medical and industrial applications of radiation,so it is still necessary to further strengthen the mamagememt of occupational exposure and occupational health of aircrews.
万方数据
维普
