The disruptive
event scenarios calculate the dose
to people living in the area from
events that are very unlikely to happen,
but could have the most adverse effects
on the repository.
These events include two types of volcanic activity-
one, called igneous intrusion, where magma enters the
repository and destroys waste packages, and another,
where magma moves through the repository in a volcanic
eruption.
Another disruptive event scenario considers the effects
of more infrequent earthquakes that are not considered
in the normal case.
Our calculations of annual radiation doses in the disruptive event scenarios
incorporate the likelihood of a particular event occurring
along with the expected consequences of the event.
Our analyses show that the repository meets the Environmental
Protection Agency standards for disruptive events.
For example, we estimate that the probability-weighted
mean annual dose to an individual for volcanic activity could have a peak
of 0.1 millirem.
