RECOMMENDATIONS This Committee strongly emphasizes the need to reduce the uncertainties in the evaluation of radiation health risks to SPS workers in the space environment. It recommends that tne following be carried out to achieve these goals: a. The short-term variations of the radiation dose rate in space must be better understood so that the range of doses and dose rates to be expected can be established accurately. A radiation environment model should be developed that is appropriate to this SPS mission for study and simulation. The model should include short-term and solar-cycle variations. b. An instrumented research satellite should be placed in GEO to measure absorbed dose rate and particle spectra at depth in phantoms and to measure the temporal variations of the radiation field. c. The differences in the results of dose and dose-rate estimation obtained from the shielding transport codes must be evaluated. The use of different calculational methods with the same set of assumptions should yield the same results. d. When institutional decisions have been made to develop appropriate exposure strategies, engineering decisions for dose control (e.g., improved shielding) should then be made.
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