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

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5.67<br />

TABLE 5.4.22. <strong>Radioactive</strong> Material Released to the Atmosphere from a<br />

Spent Fuel Canister Drop-Down-Mine-Shaft Accident at a<br />

Geologic Repository<br />

Radionuclide Ci Radionuclide Ci<br />

H 6 238Pu - 6 4.0 x 10<br />

14<br />

C 2 4 x 10- 2 3 9 Pu - 7 5.8 x 10<br />

85 Kr 4 x 103 240 Pu 9.0 x 10- 7<br />

9 0 Sr 1.0 x 10- 4 2 4 1 Pu 1.4 x 10- 4<br />

90Y 1.0 x 10- 4 2 4 1 Am 3.2 x 10- 6<br />

1291 6 x 10-3 2 4 4 Cm 1.8 x 10- 6<br />

1 3 7 Cs 1.5 x 10- 4<br />

TABLE 5.4.23. Postulated Accidents for the Geologic Repository for Reprocessing <strong>Waste</strong>s<br />

Accident Number Accident<br />

Minor 7.1 CH-TRU transuranic waste drum rupture caused by a<br />

handling error<br />

7.2 Minor canister failure due to rough handling<br />

7.3 Externally contaminated canister<br />

7.4 Receipt <strong>of</strong> dropped shipping cask<br />

Moderate 7.5 Canister drop in surface facility<br />

7.6 Canister drop down mine shaft<br />

7.7 Tornado strikes salt storage piles<br />

7.8 CH-TRU waste drum rupture caused by mechanical damage<br />

and fire<br />

7.9 CH-TRU waste drum rupture caused by internal explosion<br />

TABLE 5.4.24. <strong>Radioactive</strong> Material Released to the Atmosphere from a CH-TRU<br />

<strong>Waste</strong> Accident at the Geologic Repository for Reprocessing<br />

<strong>Waste</strong>s, Ci<br />

Nuclide U and Pu Recycle Nuclide U and Pu Recycle<br />

3H 6.3 x 10- 6<br />

1291 1.6 x 10- 9<br />

14C 1.6 x 10-1 0 1 3 4 Cs 1.8 x 10-<br />

6 0 Co 6.2 x 10- 1 3 1 3 7 Cs 1.4 x 10- 1 2<br />

9 0 Sr 9.2 x 10- 13 2 3 8 Pu 8.2 x 10- 1 2<br />

9 5 Nb 1.1 x 10-11<br />

1 2<br />

239 Pu 5.4 x 10- 1 3<br />

106Ru 2.8 x 10-10 2 4 0 u 1.1 x 10-12<br />

2 4 1 Pu 2.7 x 10-10<br />

Based on the CH-TRU releases listed in Table 5.4.24, the 70-yr dose commitment to the -<br />

maximum individual was calculated to be 1.0 x 10-12 rem, which is a number so small as to be<br />

effectively zero. For the same period, the maximum individual would receive about 7.0 rem<br />

from naturally occurring sources.

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