Discrete-event simulation of nuclear-waste transport in geologic sites subject to disruptive events. Final report Page: 3 of 71
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greatest problems associated with that power source. To mitigate
the possible environmental hazards associated with this waste
material it has been proposed to store such substances in geo-
logically stable and inert media. These media are generally con-
sidered to be either unfractured crystalline rock, such as granite,
dense sedimentary rocks, such as shale, or evaporite deposits,
such as rock salt. A review of some geologic considerations in
waste storage is presented in deMarsily, et al (1977). In this
study the parameters and assumptions used will be those for salt,
although only moderate modification would allow application to
The proposed storage of nuclear waste in salt layers has been
under study at least since 1956 (Heroy, 1956). A review of the
work in this area is presented in Bredehoeft, et al (1978).
The most commonly proposed waste disposal plan consists of
excavation of an underground chamber within a bedded salt layer.
Wastes in large metal containers are taken down a shaft and into
these chambers. After the chamber is filled with cannisters, the
entire opening is backfilled with loose salt material. Various
types of seals across the excavated tunnels are planned to pre-
vent leakage of hazardous materials through the disturbed media.
The cannisters will have some average lifetime under the
conditions present in the storage layer. After a long period of
time, the cannisters will fail, releasing the waste into the
subsurface environment. Our study treats the behavior of these
wastes after this release, Study of the rate of failure of
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Aggarwal, S.; Ryland, S. & Peck, R. Discrete-event simulation of nuclear-waste transport in geologic sites subject to disruptive events. Final report, report, June 19, 1980; United States. (digital.library.unt.edu/ark:/67531/metadc1071019/m1/3/: accessed January 21, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.