PUE - Priority Unwanted Event

PUE is short for Priority Unwanted Event.

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A priority unwanted event is one that leads to, or has a significant likelihood of leading to high human, resource, or reputation costs. Particularly where the cost meets or exceeds the organisation's threshold for requiring the highest priority of attention.

This term is sometimes used in the the mining sector, although 'MUE' is a more common and synonymous term. For example, flooding would be considered an PUE for an underground mine.

Organisations that face reasonable risks of PUEs will typically implement controls against these events, called 'critical controls'.