Scenarios were identified which involve the use of nuclear power systems in the vicinity of Space Station Freedom (SSF) and their radiological impact on the SSF crew was quantified. Several of the developed scenarios relate to the use of SSF as an evolutionary transportation node for lunar and Mars missions. In particular, radiation doses delivered to SSF crew were calculated for both the launch and subsequent return of a Nuclear Electric Propulsion (NEP) cargo vehicle and a Nuclear Thermal Rocket (NTR) personnel vehicle to low earth orbit. The use of nuclear power on co-orbiting platforms and the storage and handling issues associated with radioisotope power systems were also explored as they relate to SSF. A central philosophy in these analyses was the utilization of a radiation dose budget, defined as the difference between recommended dose limits from all radiation sources and estimated doses received by crew members from natural space radiations. Consequently, for each scenario examined, the dose budget concept was used to identify and quantify constraints on operational parameters such as launch separation distances, returned vehicle parking distances, and reactor shutdown times prior to vehicle approach. The results indicate that realistic scenarios do not exist which would preclude the use of nuclear power sources in the vicinity of SSF. The radiation dose to the SSF crew can be maintained at safe levels solely by implementing proper and reasonable operating procedures.


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    Titel :

    Radiological Assessment of Nuclear Power and Propulsion Operations Near Space Station Freedom


    Beteiligte:
    W. E. Bolch (Autor:in) / J. K. Thomas (Autor:in) / K. L. Peddicord (Autor:in) / P. Nelson (Autor:in) / D. T. Marshall (Autor:in)

    Erscheinungsdatum :

    1990


    Format / Umfang :

    115 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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