← Alle Kapitel Kapitel 10

Initial Fault Trees

The top of the tree, read off the output ports.

The first level maps the malfunction onto the failure cases of the system's output signals — and only those — joined by OR where any one suffices and by AND where several must coincide. Because each event is generated from the ibd, it carries a complete structured address: its kind, location, exact connection, fault mode, and rate. That is what later lets a cut set be a located combination of real faults.