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

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180<br />

WASTE MANAGEMENT OPERATIONS<br />

3. Design <strong>of</strong> the repository will insure that the maximum temperature achieved by the<br />

waste form will not be high enough for significant oxidation <strong>of</strong> heavy metal ele-<br />

ments even if an oxidizing environment were present.<br />

Draft p..3.1.106<br />

Issue<br />

; One commenter was interested in what the rooms, shafts and tunnels will be backfilled<br />

with. (218-DI0)<br />

Response<br />

Backfill material can be previously excavated rock (see Section 5.3.1.6) or it may be<br />

special absorbant material (see Section 5.1.2).<br />

Draft p. 3.1.107<br />

Issue<br />

One commenter requested to know the volume <strong>of</strong> material for permanent onsite storage<br />

and whether adequate mining capability is included in the repository design. (43)<br />

Response<br />

Volume <strong>of</strong> permanent on site storage is included in Tables 5.3.4 and 5.3.8 <strong>of</strong> the final<br />

Statement. Adequate facilities and equipment have been included in the repository design.<br />

Issue<br />

Several letters commented on the placement <strong>of</strong> various types <strong>of</strong> wastes next to each<br />

other in a repository.<br />

Draft p. 3.1.111--There should be some consideration <strong>of</strong> the possible interaction <strong>of</strong><br />

the various wastes with each other. If the transuranic waste contains organic material,<br />

these may contain chelating materials, which could have an effect <strong>of</strong> mobilizing other<br />

waste. (113-EPA)<br />

Draft p. 3.1.114--There can be potential problems from placing low-level wastes next<br />

to high level waste if low-level waste has significant organic constituents or other<br />

chemical incompatabilities. (218-DOI)<br />

Response<br />

The transuranic wastes and high-level wastes are sufficiently removed from each other<br />

in separate areas to preclude this problem.

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