Emergency Shutdown

Definition(s)


Emergency Shut-down

Shut down of the facility under emergency conditions during which the internal pressure in a production riser can increase above the normal operating pressure.

Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards

Emergency Shutdown

Controlled sequence of events that ensures that the well is secured against accidental release of hydrocarbons into the environment, i.e. closing of barrier elements.

Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards

 

Emergency Shutdown (ESD)

Control actions undertaken to shut down equipment or processes in response to a hazardous situation.

Source: ISO 13702:2015, Petroleum and natural gas industries — Control and mitigation of fires and explosions on offshore production installations — Requirements and guidelines, Second Edition, August 2015. Global Standards