1.2.2.9 Risk Assessment The highest risk items in an SPS were identified and ranked according to their relative importance in impacting MPTS equipment design, development and operation. They were ranked as follows: 1. DC-RF Converters and Filters 2. Materials 3. Phase Control Subsystems 4. Waveguide 5. Structure 6. Manufacturing Modules 7- Remote Manipulators 8. Biological 9. Attitude Control 10. Ionosphere 11. Power Transfer 12. Switchgear 13. Radio Frequency Interference and Allocation 14. Support Modules 15. Orbital Assembly Operations 16. Reliability 17. Solar Electric Propulsion System (SEPS) 18. Transportation Operations 19. SPS Flight Mechanics (Stationkeeping) 20. Operations and Maintenance 21. Power Source 22. Heavy Lift Launch Vehicle (HLLV) 23. Socio-Economic Considerations 24. Re-Supply The following are recommended as considerations for risk assessment in developing the system concept, technology development, ground test and flight test.
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