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The R,D&D costs are highest for the HTGR and HWR, which are yet to be demonstrated
on their reference cycles for the large unit size (1000-MWe) postulated in this report.
The cost of these demonstration units constitutes the largest fraction of the total esti-
mated R,D&D costs, although substantial costs will also be incurr'ed for large plant design
and licensing, which includes component R&D, component design, and licensing and SAR
development.
the assumption that experience equivalent to that of the Fort St. Vrain HTGR prototype
can be obtained from Canadian technology.
intermediate between those of the LWR and those of the HTGR because of the heavy reliance
of the SSCR on LWR technology. As has been discussed in the text, once these reactors
have been demonstrated on their reference cycles, additional R,D&D will be required to
convert them to DUTH fuels.
The R,D&D requirements for the HTGR and HWR are judged to be similar under
The SSCR is viewed as having R,D&D costs
Section 5.1 References
1. "The Economics and Utilization of Thorium in Nuclear Power Reactors," Resource Planning
Associates, Inc., January 16, 1968 (draft).