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5.2 Reactor Build Schedule
5.2.1 Reactor sequence
In addition to the program of base techn~loggr ~utkined previousby,
a series of three developmental reactors cubminati~g with a standardized
cmmercial plant are proposed for construction. The proposed development
plan is given in considerable detail in Ref. 102.
The development sequence would start with a preliminary conceptual
design for a k800-MWe DMSR (which would actually be the second r*eactor
in the series) to further define the developme~t problems. This would
be followed by considerable comp~nent development (in the base technoPogy
program), after which the MSTR would be designed.
eo be in the 108- to 250-MWe size range, which would employ components
in the one-fifth t~ full-scale range (based on the EO0Q-MMe conceptual
design). Most of the MSTR eomponents would be tested in an MSTR non-
radioactive mockup before the MSTR was actually assembled.
The MSTR is proposed
During construction of the MSTR, component developme~t and design
of the prototype DMSR would proceed, with detailed design and construc-
tion coincident with operation of the MSTW. This would allow close feed-
back from WSTR experience into the design and construction of the proto-
type. Finally, detailed design of the first standard DMSR would proceed
during cons$rUctiOll of the prototype SO cOIlstrUCtion Of that s"eaCtop Could
begin shortly after the prototype started operation.
5.2.2 Schedule and costs
A potential reactor build schedule is given in Fig. 28. This is the
same development schedule as was proposed for the break-even breeder DMSR
option.9
~n the latter case, the assumption was that development of the
on-line reprocessing system proceeded in parallel with development of the
reactors. Therefore, no credit can be taken for omitting process desig~
in the schedule for the once-through DMSR, However, removal of the pro-
cess development frm the expected critical path for reactor development
removes a major source of uncertainty and potential delay from the devel-
opment schedule,