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Gilson and Voss - Voss Associates

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Isotopic Mix of 20% Enriched U<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 79.68 - - - - - - 20.0 - - - 0.32<br />

% Activity 1.25 1.25 1.25 2.00 2.00 92.25<br />

Curies for a 1 kilo-gram mixture of 20% enriched uranium<br />

2.7E-4 2.7E-4 2.7E-4 4.3E-4 4.3E-4 2.0E-2<br />

gamma exposure rates in rem/hr at 30 cm<br />

1.1E-7 9.6E-6 1.4E-5 3.2E-4 2.1E-5 6.0E-6<br />

Total gamma exposure rate 3.7E-4 Rem/hr at 30 cm<br />

Isotopic Mix of Depleted U<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 99.75 - - - - - - 0.25 - - - 0.0005<br />

% Activity 32.01 32.01 32.01 0.53 0.53 2.90<br />

Curies for a 1 kilo-gram mixture of depleted uranium<br />

3.4E-4 3.4E-4 3.4E-4 5.4E-6 5.4E-6 3.1E-5<br />

gamma exposure rates in rem/hr at 30 cm<br />

1.4E-7 1.2E-5 1.7E-5 4.1E-6 2.6E-7 9.3E-9<br />

Total gamma exposure rate 3.3E-5 Rem/hr at 30 cm<br />

Isotopic Mix of HEU<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 6.7 - - - - - - 93.2 - - - 0.01<br />

% Activity 0.5 0.5 0.5 42.6 42.6 13.3<br />

Curies for a 1 kilo-gram mixture of HEU<br />

2.3E-5 2.3E-5 2.3E-5 2.0E-3 2.0E-3 6.2E-4<br />

gamma exposure rates in rem/hr at 30 cm<br />

9.2E-9 8.2E-7 1.2E-6 1.5E-3 9.6E-5 1.9E-7<br />

Total gamma exposure rate 1.6E-3 Rem/hr at 30 cm<br />

Isotopic Mix of 20% Enriched U<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 79.68 - - - - - - 20.0 - - - 0.32<br />

% Activity 1.25 1.25 1.25 2.00 2.00 92.25<br />

Curies for a 1 kilo-gram mixture of 20% enriched uranium<br />

2.7E-4 2.7E-4 2.7E-4 4.3E-4 4.3E-4 2.0E-2<br />

gamma exposure rates in rem/hr at 30 cm<br />

1.1E-7 9.6E-6 1.4E-5 3.2E-4 2.1E-5 6.0E-6<br />

Total gamma exposure rate 3.7E-4 Rem/hr at 30 cm<br />

Isotopic Mix of Depleted U<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 99.75 - - - - - - 0.25 - - - 0.0005<br />

% Activity 32.01 32.01 32.01 0.53 0.53 2.90<br />

Curies for a 1 kilo-gram mixture of depleted uranium<br />

3.4E-4 3.4E-4 3.4E-4 5.4E-6 5.4E-6 3.1E-5<br />

gamma exposure rates in rem/hr at 30 cm<br />

1.4E-7 1.2E-5 1.7E-5 4.1E-6 2.6E-7 9.3E-9<br />

Total gamma exposure rate 3.3E-5 Rem/hr at 30 cm<br />

Isotopic Mix of HEU<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 6.7 - - - - - - 93.2 - - - 0.01<br />

% Activity 0.5 0.5 0.5 42.6 42.6 13.3<br />

Curies for a 1 kilo-gram mixture of HEU<br />

2.3E-5 2.3E-5 2.3E-5 2.0E-3 2.0E-3 6.2E-4<br />

gamma exposure rates in rem/hr at 30 cm<br />

9.2E-9 8.2E-7 1.2E-6 1.5E-3 9.6E-5 1.9E-7<br />

Total gamma exposure rate 1.6E-3 Rem/hr at 30 cm<br />

Page 138<br />

Page 138<br />

Isotopic Mix of 20% Enriched U<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 79.68 - - - - - - 20.0 - - - 0.32<br />

% Activity 1.25 1.25 1.25 2.00 2.00 92.25<br />

Curies for a 1 kilo-gram mixture of 20% enriched uranium<br />

2.7E-4 2.7E-4 2.7E-4 4.3E-4 4.3E-4 2.0E-2<br />

gamma exposure rates in rem/hr at 30 cm<br />

1.1E-7 9.6E-6 1.4E-5 3.2E-4 2.1E-5 6.0E-6<br />

Total gamma exposure rate 3.7E-4 Rem/hr at 30 cm<br />

Isotopic Mix of Depleted U<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 99.75 - - - - - - 0.25 - - - 0.0005<br />

% Activity 32.01 32.01 32.01 0.53 0.53 2.90<br />

Curies for a 1 kilo-gram mixture of depleted uranium<br />

3.4E-4 3.4E-4 3.4E-4 5.4E-6 5.4E-6 3.1E-5<br />

gamma exposure rates in rem/hr at 30 cm<br />

1.4E-7 1.2E-5 1.7E-5 4.1E-6 2.6E-7 9.3E-9<br />

Total gamma exposure rate 3.3E-5 Rem/hr at 30 cm<br />

Isotopic Mix of HEU<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 6.7 - - - - - - 93.2 - - - 0.01<br />

% Activity 0.5 0.5 0.5 42.6 42.6 13.3<br />

Curies for a 1 kilo-gram mixture of HEU<br />

2.3E-5 2.3E-5 2.3E-5 2.0E-3 2.0E-3 6.2E-4<br />

gamma exposure rates in rem/hr at 30 cm<br />

9.2E-9 8.2E-7 1.2E-6 1.5E-3 9.6E-5 1.9E-7<br />

Total gamma exposure rate 1.6E-3 Rem/hr at 30 cm<br />

Isotopic Mix of 20% Enriched U<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 79.68 - - - - - - 20.0 - - - 0.32<br />

% Activity 1.25 1.25 1.25 2.00 2.00 92.25<br />

Curies for a 1 kilo-gram mixture of 20% enriched uranium<br />

2.7E-4 2.7E-4 2.7E-4 4.3E-4 4.3E-4 2.0E-2<br />

gamma exposure rates in rem/hr at 30 cm<br />

1.1E-7 9.6E-6 1.4E-5 3.2E-4 2.1E-5 6.0E-6<br />

Total gamma exposure rate 3.7E-4 Rem/hr at 30 cm<br />

Isotopic Mix of Depleted U<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 99.75 - - - - - - 0.25 - - - 0.0005<br />

% Activity 32.01 32.01 32.01 0.53 0.53 2.90<br />

Curies for a 1 kilo-gram mixture of depleted uranium<br />

3.4E-4 3.4E-4 3.4E-4 5.4E-6 5.4E-6 3.1E-5<br />

gamma exposure rates in rem/hr at 30 cm<br />

1.4E-7 1.2E-5 1.7E-5 4.1E-6 2.6E-7 9.3E-9<br />

Total gamma exposure rate 3.3E-5 Rem/hr at 30 cm<br />

Isotopic Mix of HEU<br />

238<br />

U<br />

234<br />

Th<br />

234m<br />

Pa<br />

235<br />

U<br />

231<br />

Th<br />

234<br />

U<br />

% Weight 6.7 - - - - - - 93.2 - - - 0.01<br />

% Activity 0.5 0.5 0.5 42.6 42.6 13.3<br />

Curies for a 1 kilo-gram mixture of HEU<br />

2.3E-5 2.3E-5 2.3E-5 2.0E-3 2.0E-3 6.2E-4<br />

gamma exposure rates in rem/hr at 30 cm<br />

9.2E-9 8.2E-7 1.2E-6 1.5E-3 9.6E-5 1.9E-7<br />

Total gamma exposure rate 1.6E-3 Rem/hr at 30 cm<br />

Page 138<br />

Page 138

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