A Review of Criticality Accidents A Review of Criticality Accidents
A Review of Criticality Accidents A Review of Criticality Accidents A Review of Criticality Accidents A Review of Criticality Accidents
134 14. United Nuclear Fuels Recovery Plant, 24 July 1964 Uranyl nitrate solution, U(93), in a carbonate reagent makeup vessel; two excursions; one fatality, two significant exposures. Vessel Volume Fissile Volume Fissile Mass Fissile Density 103.7 41.0 2.07 kg 50.5 g/ 229 mm Estimated Spherical Critical Mass First Spike Yield Specific Spike Yield Total Yield 288 mm 670 mm 1.72 kg ~1.0 ×10 2.4 ×10 17 15 ~1.3 ×10 17
15. Electrostal Machine Building Plant, 3 November 1965 Uranium oxide slurry, U(6.5), in a vacuum system vessel; single excursion; insignificant exposures. Vessel Volume Fissile Volume Fissile Mass Fissile Density 300.0 100.0 3.65 kg 36.5 g/ 325 mm Estimated Spherical Critical Mass First Spike Yield Specific Spike Yield Total Yield 300 mm 904 mm 1.6 kg none none ~0.08×10 17 135
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134<br />
14. United Nuclear Fuels Recovery Plant, 24 July 1964<br />
Uranyl nitrate solution, U(93), in a carbonate reagent makeup vessel; two<br />
excursions; one fatality, two significant exposures.<br />
Vessel Volume<br />
Fissile Volume<br />
Fissile Mass<br />
Fissile Density<br />
103.7<br />
41.0<br />
2.07 kg<br />
50.5 g/<br />
229 mm<br />
Estimated Spherical<br />
Critical Mass<br />
First Spike Yield<br />
Specific Spike Yield<br />
Total Yield<br />
288 mm<br />
670 mm<br />
1.72 kg<br />
~1.0 ×10<br />
2.4 ×10<br />
17<br />
15<br />
~1.3 ×10<br />
17
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