Technological Risk Management:
XENVIS is an interactive, modular
information and decision support system for technological
risk assessment and management.
The system has been developed in collaboration with and under contract to
VROM, the Dutch Ministry for Physical Planning, Housing, and the
Environment, and RIVM, the Duct Institute for Environmental Health.
The XENVIS information system
XENVIS designed to support regulatory and risk assessment
and management tasks, within the framework of national and
European legislation such as the so-called
Post-Seveso Directive (82/501/EEC).
In its latest release now called
CENVIS the system is linked to
data bases for a range of installations, nationwide, and a hazardous chemical data base,
as well as fate and transport models with interactive population exposure estimation.
The original XENVIS system integrates:
A national level
geographical information system (GIS), which is connected to
Several interlinked data bases, e.g., hazardous substances
and hazardous industrial installations with their safety audits;
Simulation models for industrial air pollution, for continuous and
A water quality model for the assessment of
toxic spills to surface water systems;
A rail and road transportation path generator for transportation safety
The graphical user interface incorporates a context sensitive hypertext
help- and explain system, and embedded expert system components that
can assist users in scenario specification, parameter estimation,
and the interpretation and further analysis of model results or plant
specific safety data including their regulatory assessment.
XENVIS also serves as a pre- and post-processor
for TECHNICA's SAFETI fault- and event tree risk assessment package,
incorporating its results, eg., as risk contours around a plant,
in the data bases and displaying them at the GIS level.