| related multiple-outage occurrence with a single initiating event and consisting of a sequence of outage occurrences which are consequences of those happening earlier in the sequence
NOTE 1 – Within a sequential multiple-outage occurrence, a “primary” outage occurrence happens as a direct consequence of the initiating incident and is not dependent on any other outage occurrence, whereas a “secondary” outage occurrence is the result of one or more earlier outage occurrences within that sequence.
NOTE 2 – An example is the tripping of a circuit due to overload after the failure of a parallel circuit of the same line.
NOTE 3 – See figure 191-25.
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