| タイトル | Implications of the new radiation exposure limits on Space Station Freedom crews |
| 著者（英） | Stanford, M.; Nachtwey, D. S. |
| 著者所属（英） | McDonnell-Douglas Space Systems Co.|NASA Johnson Space Center |
| 発行日 | 1990-01-01 |
| 言語 | eng |
| 内容記述 | Levels of acceptable risk of radiation exposure for SSF crews have been studied. Since the cancer risk per dose equivalent has increased over the last decade, new dose-equivalent limits have been recommended. An astronaut may not receive more than a depth-dose equivalent of 50 rem/year. It is found that a 180-day stay aboard Freedom could result in a worst case depth-dose of 30 rem, and a 180-day mission in a nominally shielded spacecraft in a constant atmospheric density orbit with a varying altitude could result in a depth-dose equivalent of 10 rem. This is twice the annual allowable dose-equivalent for terrestrial radiation workers. It is noted that the present understanding of the biological effectiveness of high-LET radiation is not adequate for accurate health risk assessments and that further research is necessary. |
| NASA分類 | AEROSPACE MEDICINE |
| レポートNO | 91A27707 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/349741 |
