5.3.
TOTAL DOSE.
The total dose to each organ is the sum of the external and internal dose
contributions. For consideration of risk assessment, the long-term aspect of certain
dose commitments must be included. However, the important contributions of internal
dose to the total dose of the Rongerik personnel were only for organs in which the
internal dose is rapidly accrued. Approximate total values are 230 rem to the thyroid,
{15 rem to the lower large intestine wall, 85 rem to the upper large intestine wall, and
about 40 to 50 rem to all other organs.
Uncertainties in the dose calculations are not readily determined. For external
dose, they are judged to be small in that the calculations rely substantially on film
badge readings. No information is available as to the accuracy of this dosimetry. For
internal dose, the referenced metabolic information lacks estimates of uncertainty.
Throughout the calculations, a high-sided estimate is made when a choice of specific
parameters is available.
30
4g