Risk Objects in in the RiskWare system
describe elements such as:
SIGRIC: Sistema di Gestione Rischio Chimico
A guided tour: Risk Objects, chemical installations
The Risk Objects are spatially referenced, have a list of properties
accessible to the expert system for reasoning, and can
in addition offer a multi-media description that goes beyond
their alpha numerical data, for example, imagery such as
floor plans or access maps.
- sources of risk (such as hazardous installations);
- targets (such as population centers)
- resources (such as police stations or hospitals)
The primary Risk Objects are chemical installations.
Through a hierarchy of organisational levels from plant to production unit,
production line, process, warehouse, and finally reactor or container,
they can provide the source term for emergencies such as spills, fires, or
Several data bases are linked to these object classes.
The plant object includes, or refers to, a number of
data sets of related objects; containers of hazardous chemicals
are directly used to provide the source terms for the accident simulation
models. They are linked to the hazardous chemicals data base,
and supply the information on total amounts summarized in the plant's
substance list relevant for the
Seveso Directive classification.
The property list of a container, or any of its related objects
(parents, siblings, and children) can be edited through the
expert system interface, with the support of estimation rules where
this is required.
Updates of an objects properties are automatically propagated through
the hierarchy of objects, so that a parent's summary information
is always up to date.
Among the data item describing a plant, there is also
a (hypertext) version of Safety Reports and Emergency
Plans, including the analysis of likely accident scenarios
as required by the Seveso Directive.
These data can, in principle, be also made available on a selective basis for
public access, again as required by the Seveso Directive,
through the Internet with a coupled web server.