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Inhalation of iodine 5-20
radioistopes from food
and drinking water Adults

20-50

Children Children Limitation of stay in an
open area
0.1-1 2-10

Adults Adults

0.2-2 10-30

Table 8.10 – Possible losses of people depending on the dose and time of
exposure, %
Duration Total sum of radiation, rad
of
radiation 50 75 100 125 150 175 200 250 300 350

up to 4 0 2 5 7 15 30 50 85 100 100
days

10 days 0 1 2 5 7 20 30 65 95 100

20 days 0 0 1 2 5 10 20 50 80 95

30 days 0 0 0 1 2 5 10 35 65 90

Note. In the case of repeated radiation it is necessary to consider the residual dose
D residual, not neutralized by the organism to a certain time.

Residual dose depends on the time elapsed since the previous radiation, and
is:
Time after 1 2 3 4 5 6 7 8 9 10 11 12 14
irradiation,
weeks

Residual 90 75 60 50 42 35 30 25 20 17 15 11 10
dose, %

The required number of work shifts N is determined by the ratio of the total
dose of radiation D , which can be obtained for the all term of works, over
Σ
established dose D for each work shifts:
est.
, (8.13)

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