Table 5 Critical combinations of evacuation time, activity in the bomb and the fraction of respirable 5 µm particles (%) leading to an equivalent dose absorbed by the red bone marrow (RBM) exceeding 1000 mSv by external and internal irradiation within the first 10 days after the incident (threshold for acute radiation sickness). Assumptions: aerosolization 90%, plume size as in the Oslo bombing (radius 40 m, height 40 m) [26]
Evacuation time (min) | Activity (Ci) | 5 µm particles (%) | RBM Equivalent dose (mSv) |
|---|---|---|---|
30 | < 1000 | ||
45 | 20,000 | 80 | 1185 |
15,000 | 100 | 1069 | |
60 | 20,000 | 50 | 1096 |
15,000 | 80 | 1186 | |
90 | 15,000 | 50 | 1231 |
10,000 | 80 | 1190 | |
7000 | 100 | 1006 | |
120 | 20,000 | 20 | 1197 |
10,000 | 50 | 1096 | |
7000 | 80 | 1116 | |
150 | 15,000 | 20 | 1121 |
7500 | 50 | 1031 | |
5000 | 80 | 1001 | |
180 | 15,000 | 20 | 1345 |
7000 | 50 | 1158 | |
5000 | 80 | 1207 |