D. SPS STATION The fabrication of metal products and the primary metals industries for the material acquisition and ground fabrication account for nearly all of the occupational health impacts for a 10-GW SPS (see Table 7). The normalizing factor for Table 7 is 2.76 x 10J MW-yr. Table 7. Normalized Occupational Health Impacts On the Ground For Components of One 10-GW SPS Station E. TOTAL SPS SYSTEM SCENARIO A The material acquisition and fabrication, construction, ground operation and maintenance of the 48 space transportation units have the most occupational health impacts in terms of PDL injuries and illness, followed closely by those of the 96 rectennas (see Table 8). The PDLs associated with all the occupational activities of the 21 launch sites and 48 SPS stations constitute less than one-quarter of the PDLs associated with the total SPS, except for those workers engaged in space assembly, fabrication, construction, operations and maintenance. All
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