Appendix 11.5  Relevant Input Parameter of SAFETI

Default atmospheric temperature________________20           C

Default atmospheric pressure___________________101325       N/m2

Relative humidity______________________________70           %

Default surface roughness parameter____________0.1          

Default surface temperature____________________20           C

Atmospheric molecular weight___________________28.966       

Atmospheric specific heat at constant pressure_1004         J/kg*K

Number of wind directions______________________12

Angular Offset_________________________________15           degree

Maximum release duration_______________________6000         s

Minimum temperature allowed____________________-263.15      C

Maximum temperature allowed____________________626.85       C

Maximum pressure allowed_______________________1000         bar

Maximum release velocity_______________________500          m/s

Toxics: height for calculation of effects______1         m

Toxics: results grid step in X-direction_______25           m

Toxics: result grid step in Y-direction________2.5          m

Atmospheric temp and pressure profile__________3            

Wind speed profile_____________________________2            

Temperature reference height (m)_______________10           m

Wind speed reference height (m)________________10           m

Cut-off height for wind speed profile (m)______1            m

Minimum integration step size (distance)_______0.1          m

Maximum integration step size (distance)_______100          m

Maximum distance for dispersion________________50000        m

Minimum release velocity for cont. release_____0.1          m/s

Default minimum release height_________________1            m

Maximum height for dispersion__________________1000         m

Base averaging time____________________________60          s

Minimum cloud depth____________________________0.02         m

Minimum case frequency considered______________1e-012       

Minimum event probability considered___________1e-012       

Fraction population outdoors, F-N______________0.1          

Fraction population outdoors, risk_____________1            

Fraction out killed by toxics__________________0.9          

Fraction in killed by toxics___________________0.1          

Multiplying factor for toxic F-N spread________2