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Figure 8.4 – Graph for determining the length of stay in the radioactive
contamination area during the NPP accident with RBMK-1000 reactor

Table 8.9 – Criteria for decision-making on population protection
depending on predicted radiation doses on the early phase of a radiation
accident
Types of radiation Predicted radiation Measures
doses, rad

All body Thyroid
gland

Doses for the first two Immediate:
days

100 and 500 and - shelter in buildings;

more more

- evacuation;
- iodine prophylaxis;
External radiation from a
radioactive cloud - limitation of stay in an
open area

Doses for the first two An emergency:

weeks

- Children Iodine prophylaxis

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