Exercise: Understanding contributions to dose & how may vary
Terrestrial
1) Select reptile only & occupancy on soil
Radionuclides:
Cs-137
50 Bq/kg
Co-60
0.5 Bq/kg
Po-210 50 Bq/kg
Record whole body activity concentrations and the internal and external dose for each
radionuclide.
2) Then re-run with soil as 10% dry matter
Record as above
3) For Po-210 only and 100% dry matter soil content rerun with the draft IAEA
handbook CR value = 8.6E-2
Freshwater
4) A. Select pelagic fish and benthic fish and Sr-90
Enter 0.1 Bq/kg in water
Record as above.
B. Then rerun using the draft IAEA TRS CR values for
Benthic feeding fish 1.2E+3
Piscivorous feeding fish 7.9E+2
5) Select insect larvae and pelagic fish and Th-228
Enter 0.1 Bq/kg in water
Record as above
Rerun but change the Th kd value to 6.0 the value in RESRAD-Biota
And record as above