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Table 6.6 – 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 – inversion)
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 2.65 1.65 1.45 1.30
0.5 0 2.85 1.85 1.55 1.40
+20 3.15 2.05 1.65 1.50
–20 4.25 2.70 2.15 1.90
1.0 0 4.65 2.90 2.30 2.05 < 0.5
+20 4.80 3.00 2.40 2.10
–20 8.35 5.10 3.95 3.35 1.15 0.80 0.65 0.55
3.0 0 8.75 5.30 4.15 3.50 1.25 0.85 0.70 0.60
+20 9.20 5.60 4.35 3.70 1.30 0.90 0.75 0.65
–20 11.6 6.90 5.30 4.50 1.50 1.00 0.85 0.75
5,0 0 12.2 7.30 5.60 4.70 1.60 1.10 0.95 0.85
+20 12.8 7.60 5.80 4.90 1.65 1.15 1.00 0.90
–20 17.7 10.4 7.90 6.60 2.30 1.50 1.20 1.05
10 0 18.5 10.9 8.30 6.90 2.45 1.55 1.30 1.15
+20 19.3 11.3 8.60 7.20 2.65 1.75 1.45 1.25
–20 27.1 15.7 11.8 9.80 3.80 2.35 1.90 1.60
20 0 28.3 16.4 12.3 10.2 4.05 2.55 2.05 1.80
+20 29.7 17.2 12.9 10.7 4.30 2.70 2.15 1.90
–20 35.0 20.1 15.0 12.4 4.90 3.05 2.40 2.10
30
0 36.7 21.0 15.7 12.9 5.25 3.25 2.60 2.25
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