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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 />

Radionuclide<br />

Specific dose<br />

(μSv y -1 per MBq)<br />

1m head 2m head 5m head 10m head<br />

Increase<br />

1m - 10m<br />

Ac-227 5.00E-19 5.01E-19 5.02E-19 5.05E-19 1.01<br />

Th-229 9.80E-07 9.80E-07 9.80E-07 9.80E-07 1.00<br />

Th-230 5.15E-07 5.15E-07 5.15E-07 5.15E-07 1.00<br />

Th-232 2.73E-06 2.73E-06 2.73E-06 2.73E-06 1.00<br />

Pa-231 2.32E-06 2.32E-06 2.32E-06 2.32E-06 1.00<br />

U-232 4.58E-14 4.58E-14 4.59E-14 4.59E-14 1.00<br />

U-233 3.04E-07 3.04E-07 3.04E-07 3.04E-07 1.00<br />

U-234 2.94E-07 2.94E-07 2.94E-07 2.94E-07 1.00<br />

U-235 2.88E-07 2.88E-07 2.88E-07 2.88E-07 1.00<br />

U-236 2.86E-07 2.86E-07 2.86E-07 2.86E-07 1.00<br />

U-238 2.94E-07 2.94E-07 2.94E-07 2.95E-07 1.00<br />

Np-237 7.22E-05 7.22E-05 7.22E-05 7.22E-05 1.00<br />

Pu-238 1.47E-13 1.47E-13 1.47E-13 1.47E-13 1.00<br />

Pu-239 1.04E-06 1.04E-06 1.04E-06 1.04E-06 1.00<br />

Pu-240 7.04E-07 7.04E-07 7.04E-07 7.04E-07 1.00<br />

Pu-241 4.19E-24 4.20E-24 4.23E-24 4.27E-24 1.02<br />

Pu-242 1.14E-06 1.14E-06 1.14E-06 1.14E-06 1.00<br />

Am-241 5.52E-09 5.52E-09 5.52E-09 5.52E-09 1.00<br />

Cm-243 2.79E-18 2.79E-18 2.80E-18 2.81E-18 1.01<br />

Cm-244 5.23E-21 5.24E-21 5.26E-21 5.30E-21 1.01<br />

Table C.1 Sensitivity studies on the effect of increased leachate head in the<br />

landfill. Specific doses are to members of the public via use of water<br />

from a borehole at the site boundary for drinking. Results do not<br />

include the effects of ingrowth of daughter radionuclides.<br />

Radionuclide<br />

Specific dose<br />

(μSv y -1 per MBq)<br />

20 y cap 60 y cap 100 y cap<br />

Difference<br />

20 - 100 y<br />

H-3 5.56E-22 5.99E-23 5.63E-24 98.76<br />

C-14 1.49E-07 1.47E-07 1.45E-07 1.03<br />

Cl-36 1.61E-06 1.60E-06 1.59E-06 1.01<br />

Fe-55 1.06E-34 1.90E-36 4.80E-36 22.04<br />

Co-60 5.26E-30 2.92E-32 2.99E-33 1758.56<br />

Galson Sciences Limited 80 14 July 2009<br />

WS010001/ENRMF/CONSAPP<strong>CRF</strong> 630

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