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Management of Commercially Generated Radioactive Waste - U.S. ...

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175<br />

WASTE MANAGEMENT OPERATIONS<br />

the repository than other wastes that have significant heat generation or surface radiation<br />

rates. DOE agrees, however, that ultimately not all <strong>of</strong> these wastes will necessarily<br />

require disposal in the deep geologic repositories. For the purpose <strong>of</strong> this generic State-<br />

ment it was considered prudent to assume that all suspect TRU wastes require geologic<br />

disposal.<br />

Draft p. 2.1.22<br />

Issue<br />

(40)<br />

Response<br />

One commenter stated that the discussion <strong>of</strong> dynamics in Section 2.1.4.4 is incomplete.<br />

An expanded discussion <strong>of</strong> system dynamics is presented in Chapter 7 <strong>of</strong> the final<br />

Statement. Additional information on dynamics can be found in Appendix A <strong>of</strong> Volume 2 and<br />

in Sections 3.1, 3.10 and 10.1-10.6 <strong>of</strong> DOE/ET-0028.<br />

Draft p. 2.1.22<br />

Issue<br />

The maximum spent fuel receiving rate considered for a repository in the draft State-<br />

ment is 12,000 MTHM per year which amounts to a handling requirement <strong>of</strong> 10 canisters per<br />

hour. These rates appear unrealistically high and the design <strong>of</strong> the handling system to<br />

accomplish this should be presented. (208-NRC)<br />

Response<br />

The canistered waste handling facilities designed for this receiving rate are described<br />

in DOE/ET-0028 for receiving facilities on p. 7.4.10, for shafts on pp. 7.4.15 and 16 and<br />

for sub-surface facilities on pp. 7.4.17-20. Because lower growth rates are assumed in the<br />

final Statement, the maximum handling requirement is substantially reduced. In addition,<br />

the waste disposal requirements may be divided between two or more regional repositories.<br />

Draft p. 3.1.35<br />

Issue<br />

The GEIS should address retrievability in a fashion that the potential for such<br />

retrievability (over the full term <strong>of</strong> operation) can be properly addressed. Consideration<br />

<strong>of</strong> the creep behavior <strong>of</strong> salt under thermomechanical loading is important for the design <strong>of</strong><br />

a repository in salt because it will affect the short (operational) and long (retriev-<br />

ability) term stability <strong>of</strong> storage rooms and access ways. (208-NRC)

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