Fig. 4.28 Procedure for Computation of Occupational Impacts of Direct and Indirect Construction and Component Production were used to obtain these indirect output requirements for the various categories of industries. The associated occupational fatalities and persondays lost from non-fatal accidents and diseases were then determined from historical data^ for each of the categories of direct and indirect energy producers. The analysis of health and safety risks of the remaining phases of the energy cycle was based primarily on adaptation of available literature. (See Ref. 51 for full literature citation.) Whenever possible, a quantitative estimate of fatalities and person days lost was made. Although these measures do not define the total adverse impact of a health and safety issue, they do provide a means for comparison between technologies and categories of energy cycle activities. A range of impact estimates is included in each quantification, reflecting the uncertainty associated with the magnitude of impact. In addition to the quantitative measure of uncertainty, issues identified for each system were classified according to qualitative uncertainty categories, as indicated in Table 4.16. Included is a category for those identified potential health and safety issues for which it was not possible to provide any meaningful quantification. Lack of information, such as dose-response relationships at low-dose levels, siting patterns, populations exposed, and uncertainties regarding the probability of event occurrence and the characterizations of advanced technologies limited the estimation of risk magnitudes for these issues to qualitative discussion of potential severity or possible mechanisms for occurrence of the event. For the unquantified or high-uncertainty category 3, the risks were further evaluated as being of potential significance (risk category A, potentially more than 0.01 fatal ities/1000 MW-yr) or of low significance (risk category B, potentially fewer than 0.01 fatalities/1000 MW-yr).
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