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Appendix CRF - Part 3 - Northamptonshire County Council

Appendix CRF - Part 3 - Northamptonshire County Council

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Radiological Assessment 0820-2<br />

Version 2<br />

Radionulide Water<br />

concentration<br />

(Bq m -3 )<br />

Risk<br />

quotient<br />

Am-241 4.50E-02 1.71E-02 Phytoplankton<br />

C-14 1.41E+01 9.07E-04 Bird<br />

Cl-36 3.43E+00 3.23E-05 Vascular plant<br />

Cm-243 1.66E-11 3.24E-12 Zooplankton<br />

Cm-244 5.45E-15 1.05E-15 Zooplankton<br />

Co-60 5.29E-21 2.83E-22 Insect larvae<br />

Cs-134 1.74E-19 8.44E-21 Insect larvae<br />

Cs-137 5.20E-11 1.02E-12 Insect larvae<br />

Eu-152 1.42E-15 1.97E-19 Vascular plant<br />

Eu-154 9.62E-18 1.35E-21 Vascular plant<br />

H-3 5.67E-10 1.64E-18 Phytoplankton<br />

I-129 2.43E-02 8.82E-07 Phytoplankton<br />

Ni-63 1.67E-03 4.01E-08 Gastropod<br />

Np-237 8.70E-02 2.85E-02 Phytoplankton<br />

Pb-210 1.12E-13 1.42E-15 Phytoplankton<br />

Pu-238 1.66E-06 7.75E-08 Phytoplankton<br />

Pu-239 4.40E-02 1.93E-03 Phytoplankton<br />

Pu-240 4.39E-02 1.92E-03 Phytoplankton<br />

Pu-241 6.13E-16 7.23E-21 Phytoplankton<br />

Ra-226 2.23E-03 1.59E-04 Vascular plant<br />

Ru-106 3.42E-10 2.67E-12 Insect larvae<br />

Sb-125 3.91E-19 4.65E-22 Insect larvae<br />

Sr-90 4.07E-11 1.16E-14 Insect larvae<br />

Tc-99 1.25E+01 2.48E-04 Vascular plant<br />

Th-230 4.81E-02 1.55E-03 Phytoplankton<br />

Th-232 1.03E-02 2.83E-04 Phytoplankton<br />

U-234 2.24E-01 5.31E-03 Vascular plant<br />

U-235 2.27E-01 4.99E-03 Vascular plant<br />

U-238 2.27E-01 4.61E-03 Vascular plant<br />

Limiting reference organism<br />

Table 5.12 Calculated water concentrations based on disposal of radionuclides at<br />

the individual radiological capacity. Risk quotients based on the<br />

10 Gy h -1 dose rate criterion.<br />

Galson Sciences Limited 57 14 July 2009<br />

WS010001/ENRMF/CONSAPP<strong>CRF</strong> 607

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