P&K 3783

Inputs (Sample)

Source data for the dispersion calculation according to VDI 3783
Burst pipe on the roof 12.12.91

Input for the dispersion calculation according VDI 3783 part 1
Ambient development height [m] 0
Source height [m] 10
X-Expansion of the source [m] 0
Y-Expansion of the source [m] 0
Z-Expansion of the source [m] 0
Inversion for mean situation?no
Dispersion categorystable
Wind velocity [m/s] 2
Consider rise?no
Threshold for rise [MW] 6
Roughness categoryindividual buildings/trees
Number of supporting points for the calculation 0
Calculate the worst values?yes
Calculate ambient air course?yes

Input for dispersion calculation according to VDI 3782 part 2
Dispersion areaarea I
Type of releasegaseous

Material list
NameDensityT-equivalentConc.
 [kg/m³][°C][g/m³]
BENZENE3.4900-171.7 120
PROPANE2.0100-97.17 34
ACETONE2.5900-136.5 100
METHANE0.7200217.86 122

Parameter for VDI 3783 part 2
NameBoiling pointLower flammability limitPart 2Flammability distance [m]LC
 [°C][%] meanworst[m]
BENZENE80.201.200continuous87.95114.70.412
PROPANE-42.12.100continuous52.6682.070.391
ACETONE56.30 2.5continuous58.2589.330.481
METHANE -162 5not required 0 0 0

Emission course
DurationExhaust volume rateTemperatureHeat
[s][m³/s][°C][MW]
50 12 2002.8044
150 2 300.0492
70 5 500.2460


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