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

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Draft p. 1.20<br />

Issue<br />

116<br />

DOSE CALCULATIONS<br />

Some <strong>of</strong> the numerical values on page 1.20 (e.g., maximum individual dose) cannot be<br />

traced to Section 3.1.5. (208-NRC)<br />

Response<br />

The numerical values on page 1.20 <strong>of</strong> the draft Statement are repeated in draft<br />

Table 3.1.54. These tables give only worst-case results. For the maximum individual the<br />

dose presented is the dose during the first year <strong>of</strong> exposure. Values for faulting and<br />

flooding and drilling were taken from draft Tables 3.1.41 and 3.1.51, respectively. The<br />

first-year dose from solution mining is not given elsewhere.<br />

Draft p. 1.20<br />

Issue<br />

In Item 3 <strong>of</strong> Table 1.4, the regional natural radiation dose is calculated for three<br />

generations. In Item 2, doses are calculated for only one generation (70-yr total body)<br />

resulting in inequitable bases for comparison. (208-NRC)<br />

Response<br />

In draft Table 1.4, page 1.20, regional natural radiation dose under the columns<br />

labeled meteorite impact, fault fracture and flooding, and drilling accident should be<br />

1.4 x 103 to 1.1 x 104<br />

Issue<br />

Several commenters questioned the regional population assumption.<br />

Draft p. 1.20--The regional population assumption appears to be far too conservatively<br />

high. (147)<br />

Draft p. 3.1.100--The use <strong>of</strong> a reference population <strong>of</strong> 2,000,000 people within 80 km<br />

<strong>of</strong> a respository to calculate doses is questionable when nuclear plants in the Northeast<br />

U.S. have a surrounding population (within 50 km) <strong>of</strong> 50,000,000 people. (30)<br />

Response<br />

The reference environment <strong>of</strong> 2,000,000 was taken from actual data (adjusted slightly<br />

for location) at a mid-west reactor site.

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