Initiating Event 2
Initiating Event 2 : An identified event that leads to anticipated operational occurrences or accident conditions. This term (often shortened to initiator) is used in relation to event reporting and analysis, i.e. when such events have occurred. For the consideration of hypothetical events considered at the design stage, the term postulated initiating event is used. Postulated Initiating Event (PIE): An event identified during design as capable of leading to anticipated operational occurrences or accident conditions. The primary causes of postulated initiating events may be credible equipment failures and operator errors (both within and external to the facility) or human induced or natural events
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