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

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Response<br />

1.54<br />

WASTE MANAGEMENT OPERATIONS<br />

The useful life <strong>of</strong> spent fuel casks was estimated in DOE/ET-0028 (Section 6.2) to be<br />

20-30 years. A 10 year capital recovery period was used in the cost calculations but an<br />

indefinite life was used when estimating the resource requirements. In the final Statement<br />

a 20-year life is used to estimate resource requirements.<br />

Draft p. N.2<br />

Issue<br />

One commenter noted that the cask availability data in the draft Statement is out <strong>of</strong><br />

date. The commenter also requested that some discussion be provided relative to the<br />

industry's ability to meet demand for spent fuel casks at the rate they will be required.<br />

(208-NRC)<br />

Response<br />

The cask availability data have been updated for the final Statement in Section 4.5,<br />

Table 4.5.1. The second issue is addressed in DOE's EIS on Spent Fuel Policy (DOE 1980b)<br />

in Volume 2, Section III.<br />

Draft p. N.7<br />

Issue<br />

One commenter questioned why the cask maximum thermal design load-is: set at 50 kW<br />

(208-NRC).<br />

Response<br />

The conceptual high-level waste shipping cask described in this report is based on<br />

work done by Battelle-Northwest (Rhoads 1978). The 50 kilowatt heat rejection limit is<br />

imposed by the design considered in this report. Nine canisters <strong>of</strong> 5-year-old solidified<br />

high level waste, 30 cm in diameter and 3 meters long, could be carried by this design.<br />

DOE/ET-0028, p. 4.1.30<br />

Issue<br />

In DOE/ET-0028, supporting documentation for the Statement, fluidized bed calcination<br />

is identified as the most well developed calcination process, yet the reference vitrifica-<br />

tion process is spray calcination/in-can melting. Why is one calcination process refer-<br />

enced to make glass waste form and another to make calcine waste form? (208-NRC)

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