ML21265A542
| ML21265A542 | |
| Person / Time | |
|---|---|
| Site: | University of California-Davis |
| Issue date: | 09/22/2021 |
| From: | McClellan Nuclear Research Center |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML21265A540 | List: |
| References | |
| Download: ML21265A542 (13) | |
Text
New MNRC MHA Source Term Isotopes with half lives of less than 60 s were not accounted for Based on thermal fission of U-235 402 C release fraction 2.38E-05 reactor room volume (ml) 210000000 Maximum fissions per element 7.83E+14 MHA Isotope fission yield Saturation Act Saturation Activity (Ci) Saturates (Y/N)
Br-83 0.00536 4.20E+12 113.4 Y Kr-83m 0.00536 4.20E+12 113.4 y Br-84 0.00985 7.71E+12 208.4 Y Kr-85m 0.0129 1.01E+13 273.0 Y Kr-85 0.00283 2.22E+12 3.7 N Kr-87 0.0256 2.00E+13 541.8 Y Kr-88 0.0355 2.78E+13 751.3 Y I-131 0.0289 2.26E+13 611.6 Y Xe-131m 0.000405 3.17E+11 8.6 Y I-132 0.0431 3.37E+13 912.1 Y I-133 0.067 5.25E+13 1417.9 Y Xe-133m 0.00189 1.48E+12 40.0 Y Xe-133 0.067 5.25E+13 1417.9 Y I-134 0.0783 6.13E+13 1657.0 Y I-135 0.0628 4.92E+13 1329.0 Y Xe-135m 0.011 8.61E+12 232.8 Y Xe-135 0.0654 5.12E+13 1384.0 Y Xe-138 0.063 4.93E+13 1333.2 Y 24 decay failure in water Isotope fission yield Saturation Act Saturation Activity (Ci) Saturates (Y/N)
Br-83 0.00536 4.20E+12 113.4 Y Kr-83m 0.00536 4.20E+12 113.4 y Br-84 0.00985 7.71E+12 208.4 Y Kr-85m 0.0129 1.01E+13 273.0 Y Kr-85 0.00283 2.22E+12 3.7 N Kr-87 0.0256 2.00E+13 541.8 Y Kr-88 0.0355 2.78E+13 751.3 Y I-131 0.0289 2.26E+13 611.6 Y Xe-131m 0.000405 3.17E+11 8.6 Y I-132 0.0431 3.37E+13 912.1 Y I-133 0.067 5.25E+13 1417.9 Y Xe-133m 0.00189 1.48E+12 40.0 Y Xe-133 0.067 5.25E+13 1417.9 Y I-134 0.0783 6.13E+13 1657.0 Y
I-135 0.0628 4.92E+13 1329.0 Y Xe-135m 0.011 8.61E+12 232.8 Y Xe-135 0.0654 5.12E+13 1384.0 Y Xe-138 0.063 4.93E+13 1333.2 Y
Half-Life Release fraction to environment Release from Fuel (Ci) 2.4 h 0.25 2.70E-03 1.83 h 1 2.70E-03 31.8 m 0.25 4.96E-03 4.48 h 1 6.50E-03 10.73 y 1 8.89E-05 1.27 h 1 1.29E-02 2.84 h 1 1.79E-02 8.04 d 0.25 1.46E-02 11.9 d 1 2.04E-04 2.28 h 0.25 2.17E-02 20.8 h 0.25 3.37E-02 2.19 d 1 9.52E-04 5.243 d 1 3.37E-02 52.6 m 0.25 3.94E-02 6.57 h 0.25 3.16E-02 15.3 m 1 5.54E-03 9.1 h 1 3.29E-02 14.1 m 1 3.17E-02 Half-Life 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> decay 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> activity 2.4 h 9.77E-04 1.11E-01 1.83 h 1.13E-04 1.28E-02 31.8 m 0.00E+00 0.00E+00 4.48 h 2.44E-02 6.66E+00 10.73 y 1.00E+00 3.74E+00 1.27 h 2.05E-06 1.11E-03 2.84 h 2.86E-03 2.15E+00 8.04 d 9.17E-01 5.61E+02 11.9 d 9.43E-01 8.09E+00 2.28 h 6.78E-04 6.18E-01 20.8 h 4.49E-01 6.37E+02 2.19 d 7.29E-01 2.91E+01 5.243 d 8.76E-01 1.24E+03 52.6 m 0.00E+00 0.00E+00
6.57 h 7.95E-02 1.06E+02 15.3 m 0.00E+00 0.00E+00 9.1 h 1.61E-01 2.22E+02 14.1 m 0.00E+00 0.00E+00
Release to Environment (Ci) Release to Reactor room (u Concentration (uCi/ml) 6.75E-04 6.75E+02 3.21E-06 2.70E-03 2.70E+03 1.29E-05 1.24E-03 1.24E+03 5.91E-06 6.50E-03 6.50E+03 3.09E-05 8.89E-05 8.89E+01 4.23E-07 1.29E-02 1.29E+04 6.14E-05 1.79E-02 1.79E+04 8.51E-05 3.64E-03 3.64E+03 1.73E-05 2.04E-04 2.04E+02 9.71E-07 5.43E-03 5.43E+03 2.58E-05 8.44E-03 8.44E+03 4.02E-05 9.52E-04 9.52E+02 4.53E-06 3.37E-02 3.37E+04 1.61E-04 9.86E-03 9.86E+03 4.69E-05 7.91E-03 7.91E+03 3.77E-05 5.54E-03 5.54E+03 2.64E-05 3.29E-02 3.29E+04 1.57E-04 3.17E-02 3.17E+04 1.51E-04 Release fraction to environment release to reactor room room concentration (uCi/cc) 0.025 6.59E-08 3.14E-10 1 3.04E-07 1.45E-09 0 0.00E+00 0.00E+00 1 1.59E-04 7.55E-07 1 8.89E-05 4.23E-07 1 2.64E-08 1.26E-10 1 5.11E-05 2.43E-07 0.025 3.34E-04 1.59E-06 1 1.92E-04 9.16E-07 0.025 3.68E-07 1.75E-09 0.025 3.79E-04 1.81E-06 1 6.94E-04 3.30E-06 1 2.96E-02 1.41E-04 0 0.00E+00 0.00E+00
0.025 6.29E-05 2.99E-07 0 0.00E+00 0.00E+00 1 5.29E-03 2.52E-05 0 0.00E+00 0.00E+00
DAC whole body (uCi/ml) ALI Thyroid (uCi) DAC value 2 Minute Stay TEDE (mrem) 3.00E-05 n/a 1.07E-01 8.93E-03 1.00E-02 n/a 1.29E-03 1.07E-04 3.00E-05 n/a 1.97E-01 1.64E-02 2.00E-05 n/a 1.55E+00 1.29E-01 1.00E-04 n/a 4.23E-03 3.53E-04 5.00E-06 n/a 1.23E+01 1.02E+00 2.00E-06 n/a 4.26E+01 3.55E+00 2.00E-08 50 8.66E+02 7.22E+01 4.00E-04 n/a 2.43E-03 2.02E-04 3.00E-06 8.00E+03 8.61E+00 7.18E-01 1.00E-07 300 4.02E+02 3.35E+01 1.00E-04 n/a 4.53E-02 3.78E-03 1.00E-04 n/a 1.61E+00 1.34E-01 2.00E-05 50000 2.35E+00 1.96E-01 7.00E-07 2000 5.38E+01 4.48E+00 9.00E-06 n/a 2.93E+00 2.44E-01 1.00E-05 n/a 1.57E+01 1.31E+00 4.00E-06 n/a 3.78E+01 3.15E+00 1.21E+02 DAC whole body (uCi/ml) ALI Thyroid (uCi) DAC value 2 Minute Stay TEDE (mrem) 3.00E-05 n/a 1.05E-05 8.72E-07 1.00E-02 n/a 1.45E-07 1.21E-08 3.00E-05 n/a 0.00E+00 0.00E+00 2.00E-05 n/a 3.77E-02 3.15E-03 1.00E-04 n/a 4.23E-03 3.53E-04 5.00E-06 n/a 2.51E-05 2.10E-06 2.00E-06 n/a 1.22E-01 1.01E-02 2.00E-08 50 7.95E+01 6.62E+00 4.00E-04 n/a 2.29E-03 1.91E-04 3.00E-06 8.00E+03 5.84E-04 4.87E-05 1.00E-07 300 1.81E+01 1.50E+00 1.00E-04 n/a 3.30E-02 2.75E-03 1.00E-04 n/a 1.41E+00 1.17E-01 2.00E-05 50000 0.00E+00 0.00E+00
7.00E-07 2000 4.28E-01 3.56E-02 9.00E-06 n/a 0.00E+00 0.00E+00 1.00E-05 n/a 2.52E+00 2.10E-01 4.00E-06 n/a 0.00E+00 0.00E+00 8.51E+00
5 Minute Stay TEDE (mrem) Intake per minute (uCi)* 2 Minute Stay CDE thyroid (mrem) 2.23E-02 2.68E-04 4.10E-02 3.22E-01 8.82E-04 2.56E+00 8.87E+00 1.81E+02 3.47E-01 6.93E+02 5.06E-04 1.79E+00 5.17E-01 6.46E+00 8.37E+01 8.03E-01 2.68E+02 9.44E-03 3.35E-01 4.89E-01 9.39E-01 1.88E+00 1.12E+01 7.53E-01 3.77E+01 6.11E-01 3.27E+00 7.87E+00 3.02E+02 1.01E+03 5 Minute Stay TEDE (mrem) Intake per minute (uCi)* 2 Minute Stay (mrem) 2.18E-06 3.02E-08 0.00E+00 7.86E-03 8.82E-04 5.24E-06 2.53E-02 1.66E+01 3.18E-02 6.36E+01 4.77E-04 1.22E-04 3.50E-05 4.38E-04 3.76E+00 3.61E-02 1.20E+01 6.88E-03 2.93E-01 0.00E+00
8.91E-02 5.99E-03 2.99E-01 0.00E+00 0.00E+00 0.00E+00 5.25E-01 0.00E+00 2.13E+01 7.59E+01
- based on 1.2 m^3/hr breathing rate
5 Minute Stay CDE thyroid (mrem) 1.73E+03 1.62E+01 6.70E+02 4.69E+00 9.41E+01 2.52E+03 5 Minute Stay (mrem) 1.59E+02 1.10E-03 3.01E+01
7.48E-01 0.00E+00 1.90E+02