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Appendixes

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Kelley, J. 1999. Personal communication from J. Kelley, Lockheed Missiles and Space Systems, to B. Bumpkin, member of the Committee on the Engineering Challenges to the Long-Tenn Operation of the International Space Station, January 7, 1999. Window, K. 1999. Presentation by K. Window, Avio~ucs and Software Office, International Space Station Program Office, to the Committee on the Engineering Challenges to the Long-Term Operation of the International Space Station, NASA Johnson Space Center, Houston, Texas, March 24' 1999. Styczynski, T. 1999. Personal communication from T. Styczynski, Lockheed-Martin Hubble Space Telescope Operations, to H. Hecht, member of the Committee on the Engineering Challenges to the I=ong-Term Operation of the Interrmtional Space Station, January 20, 1999. Wolf, K. 1999. Launch Package and Stage Assistance Program. Presentation by K. Wolf, the Boeing Company, to the Committee on the Engineering Challenges to the Long-Term Operation of the International Space Station, NASA Johnson Space Center' Houston, Texas' March 25, 1999. 32

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Appendix A Statement of Task The study will assess the potential effect of long-term operational engineering issues on the budget and capabili- ties of the International Space Station (ISS) and, where appropriate, recommend procedures and hardware upgrades to mitigate their impact. The study will focus on the follow . . ng Issues: 1. Long-term ISS maintenance requirements. 2. Extravehicular activity (EVA) requirements to support ISS operations and maintenance (in light of experi- ence with the Mir space station). 33 3. The use of an international fleet of launch vehicles to support the ISS. 4. The need for and capability to upgrade and replace ISS equipment and components after the station's assembly is complete. This includes the need to replace laboratory equipment as it becomes obsolete. 5. Decommissioning and disassembly of the station at the end of its useful life.