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(V ), m/sec. No Average Overcast No Overcast
10
V =2 C C C C C
10

2<V <3 C C IZ IN IN
10
3<V <5 C IZ IZ IZ IN
10
5<V <6 IZ IZ IZ IZ IZ
10

V >6 IZ IZ IZ IZ IZ
10
Note: IN – Inversion, IZ – Isotherm, C – Convection

Table 6.4 – Velocity of transport of the front edge of the cloud of
contaminated air, depending on the wind speed and the degree of vertical air
resistance
Wind speed, m/s

1 2 3 4 5 6 7 8 9 10

Velocity of transport of the front edge of the cloud of contaminated air,
km/h

Inversion

5 10 16 21

Isotherm

6 12 18 24 29 35 41 47 53 59

Convection

7 14 21 28

Table 6.5 – Possible losses of workers, employees and the population
from potent toxic substances
Conditions Without Provision of gas masks, %

of people gas
stay masks 20 30 40 50 60 70 80 90 100

Open area 90-100 75 65 58 50 40 35 25 18 10

In the
simplest 50 40 35 30 27 22 18 14 9 4
shelters

Notice. The structure of loss of people in the center of the defeat: mild – 25%; medium and heavy – 40%;
fatal – 35%.

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