Facility Vulnerability with VISAC

Edit the Geometry Model

Editing the geometry of a facility is mostly handled with the Edificio package. Edificio allows the user to move buildings relative to one another and to move components within those buildings. Buildings from different facilities can be combined into new facilities. Multiple copies of buildings or components inside buildings can be made. Components of detailed plants should correspond to a basic event in the logic model. When adding to the model, components should be added to the geometry first, then to the logic model. To save your changes, be sure to select File/Save from the Edificio menu before quitting the geometry editor.

These changes can be made using the Facility/Edit Geometry Model menu options:

• Edificio Geometry Editor - move/add/delete buildings, move/add/delete critical components in buildings, set individual component fragilities.

• Overpressure Fragilities - lists all the overpressure fragilities for all the components at once. The way these fragilities are used by the QuickBlast package is as follows: for overpressures less than the minimum, no damage to the component occurs. For overpressures greater than the maximum, the critical component is considered failed with a probability of 100%. For overpressures in between, the failure probability is a linear function with overpressure.

It will be useful to use the VISAC geometry display packages (Triple View Slicer, QuickView 3D, and 3D Ray Tracer) as a check while you edit the geometry of the new facility.

Oak Ridge National Laboratory, 2004

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