Technological Risk Management:
The XENVIS information system
XENVIS offers a national level GIS with linked data bases for
risk objects like Seveso-class
chemical process plants;
a hazardous chemicals data base is
linked to the plant's safety audits and risk evaluations.
Models for transportation route selection,
tracing spills into surface water systems, and continuous and
accidental atmospheric releases support the risk assessment.
Model input parameters are loaded automatically from the data bases where
feasible, and the accident scenarios are designed interactively be the user
with the help of a rule-based expert system.
Assessment Models
A dynamic river model of the Rhine-Maas system describes the propagation
of toxic spills over time and space, keeping track of transport, dispersion,
and substance decay. The original simulation model was developed by
Delft Hydraulics.
The rule-based expert system estimates the likelihood and
extent of a possible fish kill and related long-term environmental
and ecological damage.
