REG NASA-LLIS-1615--2005 Lessons Learned - Risk Management Cascading and Worst Case Events.pdf
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1、Lessons Learned Entry: 1615Lesson Info:a71 Lesson Number: 1615a71 Lesson Date: 2005-08-29a71 Submitting Organization: ARCa71 Authored by: Donald R. MendozaSubject: Risk Management: Cascading and Worst Case Events Abstract: Cascading and/or multiple failures must be considered during risk assessments
2、 to ensure hazard controls are adequate should they be required to address more than one failure at a time. Description of Driving Event: STS 90/Neurolab was a Spacelab module mission focusing on the effects of microgravity on the nervous system. The mission was flown abroad the Columbia and launche
3、d on the 17 of April 1998 and lasted 17 days. The goals of Neurolab were to study basic research questions and to increase the understanding of the mechanisms responsible for neurological and behavioral changes in space. The mission was a joint venture of several space agencies and U.S. research age
4、ncies including the National Institutes of Health, the National Science Foundation, and the Office of Naval Research, as well as the space agencies of Canada, France, Germany, and Japan, and the European Space Agency. While the Neurolab mission was an overall success it experienced several on-orbit
5、animal habitat hardware failures and problems. In addition, the missions approach to problem resolution of this type depended heavily on crew intervention. This approach proved to be unrealistic given the complicated nature of the mission since the crews time was already limited. Lesson(s) Learned:
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