A Review of Criticality Accidents A Review of Criticality Accidents

More documents

Recommendations

Info

138 18. Windscale Works, 24 August 1970 Plutonium organic solution in a transfer vessel; one excursion; insignificant exposures. Vessel Volume Fissile Volume Fissile Mass Fissile Density 156.0 40.0 2.07 kg 51.8 g/ 305 mm Estimated Spherical Critical Mass First Spike Yield Specific Spike Yield Total Yield 137 mm 247 mm 0.69 kg none none 0.01×10 17 686 mm
19. Idaho Chemical Processing Plant, 17 October 1978 Uranyl nitrate solution, U(82), in a lower disengagement section <strong>of</strong> a scrubbing column; excursion history unknown; insignificant exposures. Vessel Volume Fissile Volume Fissile Mass Fissile Density 315.5 315.5 6.08 kg 19.3 g/ 305 mm First Spike Yield Specific Spike Yield Total Yield 1219 mm Estimated Spherical Critical Mass 4.34 kg unknown unknown 27.0 ×10 17 139
Page 1 and 2:
LA-13638 Approved for public releas
Page 3 and 4:
A Review of Criticality Accidents 2
Page 5 and 6:
PREFACE This document is the second
Page 7 and 8:
Tom Jones was invaluable in generat
Page 9 and 10:
C. OBSERVATIONS AND LESSONS LEARNED
Page 11 and 12:
FIGURES 1. Chronology of process cr
Page 13 and 14:
51. MSKS and assembly involved in t
Page 15 and 16:
A REVIEW OF CRITICALITY ACCIDENTS A
Page 17 and 18:
3 Black Sea Baltic Sea Obninsk Norw
Page 19 and 20:
North Atlantic Ocean Irish Sea Wind
Page 21 and 22:
1. Mayak Production Association, 15
Page 23 and 24:
time of the accident. However, the
Page 25 and 26:
determined by a radiation control p
Page 27 and 28:
consequences of this accident, the
Page 29 and 30:
Figure 10. Drum in which the 1958 Y
Page 31 and 32:
The entire plutonium process area h
Page 33 and 34:
Page 35 and 36:
During the next shift, radiation sa
Page 37 and 38:
9. Siberian Chemical Combine, 14 Ju
Page 39 and 40:
The accident investigation determin
Page 41 and 42:
10. Hanford Works, 7 April 1962 18,
Page 43 and 44:
heater and stirrer were turned off
Page 45 and 46:
vessel 64-A was added. The dissolut
Page 47 and 48:
additional reflection afforded by t
Page 49 and 50:
15. Electrostal Machine Building Pl
Page 51 and 52:
Page 53 and 54:
ased on a radiation survey, that th
Page 55 and 56:
0.5 m 0.5 m 0.5 m 0.5 m 3.0 m 1.4 m
Page 57 and 58:
The investigation identified severa
Page 59 and 60:
19. Idaho Chemical Processing Plant
Page 61 and 62:
20. Siberian Chemical Combine, 13 D
Page 63 and 64:
To Glovebox 6 7 8 6 From Glovebox 6
Page 65 and 66:
on a 0.4 m square pitch grid. The b
Page 67 and 68:
competing reactivity effects proved
Page 69 and 70:
Figure 35. The precipitation vessel
Page 71 and 72:
B. PHYSICAL AND NEUTRONIC CHARACTER
Page 73 and 74:
Material Fissile Mass: Fissile mass
Page 75 and 76:
235 U Spherical Critical Mass (kg)
Page 77 and 78:
Table 10. Accident Fission Energy R
Page 79 and 80:
• Accidents in shielded facilitie
Page 81 and 82:
• Senior management should be awa
Page 83 and 84:
Table 11. Reactor and Critical Expe
Page 85 and 86:
3. Oak Ridge National Laboratory, 2
Page 87 and 88:
5. Oak Ridge National Laboratory, 3
Page 89 and 90:
eflector of 236 kg when he noticed
Page 91 and 92:
3. Los Alamos Scientific Laboratory
Page 93 and 94:
At the equatorial plane, the two ha
Page 95 and 96:
Figure 48. The Los Alamos Scientifi
Page 97 and 98:
Figure 50. Burst rod and several se
Page 99 and 100:
On 11 March 1963, the facility chie
Page 101 and 102: 13. Chelyabinsk-70, 5 April 1968 57
Page 103 and 104: 14. Aberdeen Proving Ground, 6 Sept
Page 105 and 106: completed the construction of the l
Page 107 and 108: C. MODERATED METAL OR OXIDE SYSTEMS
Page 109 and 110: 63,65,66, 67 4. Chalk River Laborat
Page 111 and 112: 7. Centre dÉtudes Nucleaires de Sa
Page 113 and 114: a technician prescribing the loadin
Page 115 and 116: the room to drain the water out of
Page 117 and 118: In the final experiment, the critic
Page 119 and 120: 3. Los Alamos Scientific Laboratory
Page 121 and 122: III. POWER EXCURSIONS AND QUENCHING
Page 123 and 124: Figure 64. Energy model computation
Page 125 and 126: References 1. Stratton, W. R. A Rev
Page 127 and 128: 50. Paxton, H. C. “Godiva Wrecked
Page 129 and 130: 92. Stone, R. S., H. P. Sleeper, Jr
Page 131 and 132: criticality accident: The release o
Page 133 and 134: prompt criticality: State of a fiss
Page 135 and 136: 1. Mayak Production Association, 15
Page 139 and 140: 5. Los Alamos Scientific Laboratory
Page 143 and 144: 9. Siberian Chemical Combine (Tomsk
Page 147 and 148: 13. Siberian Chemical Combine, 2 De
Page 149 and 150: 15. Electrostal Machine Building Pl
Page 151: 17. Mayak Production Association, 1
Page 155 and 156: 21. Novosibirsk Chemical Concentrat
Page 157 and 158: This report has been reproduced dir
show all

A Review of Criticality Accidents A Review of Criticality Accidents

Create successful ePaper yourself

Delete template?

Save as template?