Undesirable Event : An adverse occurrence or situation in a process component or process station which poses a threat to safety such as overpressure, underpressure, liquid overflow. etc. (RP 14C)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}