Appendix CRF - Part 3 - Northamptonshire County Council

Radiological Assessment 0820-2
Version 2
Radionuclide
Specific dose
(μSv y -1 per MBq)
Radionuclide
Specific dose
(μSv y -1 per MBq)
Cs-134 8.72E-22 Pu-240 2.04E-27
Cs-137 1.97E-21 Pu-241 2.55E-30
Pm-147 2.92E-34 Pu-242 8.14E-33
Eu-152 1.90E-13 Am-241 4.84E-30
Eu-154 4.30E-14 Cm-243 4.80E-16
Eu-155 5.99E-31 Cm-244 4.43E-28
Pb-210 6.65E-62
Table 5.2 Specific doses to workers and members of the public via the external
irradiation pathway. Results for doses to the public include doses
arising from ingrowth of daughter radionuclides for 60 years.
5.3 Intrusion
Specific doses to workers intruding into the waste and to members of the public living
on excavated waste after intrusion are presented in Table 5.3. These calculations
assume that the LLW is disposed of to all of the remaining cells at the site. Other
assumptions are described in Appendix A (Section A.3).
Radionuclide
Intruder
20 years
Specific dose
(μSv y -1 per MBq)
Intruder
60 years
Resident
60 years
Resident
100 years
H-3 4.31E-11 4.52E-12 1.28E-10 1.35E-11
C-14 7.09E-09 7.05E-09 8.68E-09 8.63E-09
Cl-36 3.02E-08 3.02E-08 4.28E-07 4.28E-07
Fe-55 1.40E-12 4.85E-17 8.13E-18 2.82E-22
Co-60 2.44E-06 1.27E-08 4.19E-11 2.17E-13
Ni-63 1.16E-09 8.68E-10 2.60E-10 1.95E-10
Sr-90 2.49E-07 9.59E-08 3.31E-07 1.28E-07
Nb-94 7.53E-05 7.52E-05 2.44E-07 2.44E-07
Tc-99 1.09E-08 1.09E-08 3.68E-07 3.68E-07
Ru-106 1.16E-14 1.39E-26 7.44E-29 8.90E-41
Ag-108m 6.38E-05 5.13E-05 1.68E-07 1.35E-07
Sb-125 1.13E-08 5.68E-13 1.89E-15 9.47E-20
Sn-126 1.34E-04 1.34E-04 4.90E-07 4.90E-07
I-129 1.06E-06 1.06E-06 1.36E-06 1.36E-06
Ba-133 2.20E-06 1.65E-07 5.63E-10 4.22E-11
Galson Sciences Limited 46 14 July 2009
WS010001/ENRMF/CONSAPPCRF 596