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Page Title:
Table 7-5. Important Nuclides Released from Plutonium Solution Criticality |
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|  DOE-HDBK-3010-94
7.0 Application Examples; Dissolving Operations Examples
Table 7-5. Important Nuclides Released from Plutonium Solution Criticality
Nuclide
Ci Produced
ARF
Ci Released
Kr-83m
110
1.0
110
Kr-85m
71
1.0
71
Kr-85
8E-3
1.0
8E-3
Kr-87
430
1.0
430
Kr-88
230
1.0
230
Kr-89
13,000
1.0
13,000
Xe-131m
0.1
1.0
0.1
Xe-133m
2.2
1.0
2.2
Xe-133
27
1.0
27
Xe-135m
3300
1.0
3300
Xe-135
410
1.0
410
Xe-137
49,000
1.0
49,000
Xe-138
11,000
1.0
11,000
I-131
11
0.25
2.8
I-132
1200
0.25
300
I-133
160
0.25
40
I-134
4300
0.25
1100
I-135
450
0.25
110
Plutonium airborne releases have been estimated by the NRC as well. The generic
criticality assumed for solutions was an initial burst of 1E+18 fissions followed at
10-minute intervals for 8 hours by bursts of 2E+17 fissions for a total of 1E+19
fissions. The criticality was considered terminated by the eventual evaporation of 100
liters of solution over the 8-hour period. The evaporation process over 8 hours
would not be characterized by continuous, vigorous boiling. The NRC assigned a
respirable release fraction of 5E-4 to the amount of plutonium in the 100 liters that
evaporated. This value is between the respirable ARF of 3E-5 for heating solutions
(subsection 3.2.1.1) and the ARF of 2E-3 for continuous boiling (subsection 3.2.1.2)
and is considered appropriate for the purposes intended.
Page 7-17
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