The
sequence and timing of scenarios
resulting in waste package failure are
highly dependent on initial assumptions
and are the most significant factors in
estimating the timing and magnitude of
doses to the RMEI. Dose projections
involve extrapolation of assumptions,
models, and data over time periods
much longer than those considered in
other regulatory contexts. Such
projections therefore cannot be
confirmed in the usual sense (i.e.,
through measurements or monitoring),
nor is it expected that long-term
maintenance of the repository will be
performed.