HEGADAS is a far-field heavy gas dispersion model, available for both steady-
state (HEGADAS-S) and transient releases (HEGADAS-T). HEGADAS can be
used as a stand-alone model, but will usually be run in conjunction with one of the
near-field models. HEGADAS includes both HF and multi-component
To run HEGADAS chemical information relevant to the system of interest should be incorporated into the
DATAPROP data base.