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0
Q , t t, C Inversion
0
Chlorine Ammonia

Wind speed, m/s

1 2 3 4 5 10 1 2 3 4 5 10

+20 38.5 22.0 16.4 13.5 5.45 3.40 2.70 2.35

–20 48.2 27.3 20.3 16.6 6.60 4.05 3.20 1.25

50 0 50.4 28.6 21.2 17.3 6.85 4.20 3.30 1.35

+20 52.9 30.0 22.1 18.1 7.20 4.40 3.45 2.45

–20 59.9 33.7 24.8 20.3 8.10 4.95 3.85 3.25

70 0 62.6 35.2 25.9 21.1 8.45 5.15 4.00 3.40

+20 65.6 36.8 27.1 22.0 8.90 5.45 4.20 3.60

–20 75.0 41.9 30.8 25.0 10.2 6.20 4.75 3.95

100 0 78.7 43.8 32.1 26.1 10.8 6.50 5.00 4.15

+20 82.2 45.9 33.6 27.2 11.3 6.75 5.20 4.35

–20 149 81.6 59.2 47.8 20.1 11.8 9.00 7.40

300 0 156 85.4 61.9 49.9 21.0 12.4 9.30 7.70

+20 164 89.5 64.8 52.2 21.9 12.9 9.70 8.00

Table 6.7 – Depth of spreading of a cloud of contaminated air in the
event of an accident on chemically dangerous objects and transport, km (for
degree of vertical air resistance – isotherm)
0
Q , t t, C Isotherm
0
Chlorine Ammonia

Wind speed, m/s

1 2 3 4 5 10 1 2 3 4 5 10

–20 1.10 0.75 0.60 0.50 < <
0.5 0.5
0.5
0 1.20 0.85 0.65 0.55 0.50 <
0.5

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