The Coker Drum Safety System (CDSS; photo) automatically inhibits the opening of valves under unsafe process conditions. In a crude petroleum refinery, this prevents the release of hydrocarbons or hydrogen sulfide (or both) into the atmosphere, or introduction of hydrocarbons into an open drum. The CDSS logic server makes sure that an in-service drum is not opened to the atmosphere, or that an open drum is not placed in service. The CDSS is suitable for use up to SIL-3. — SIS-Tech, Houston
Preventing unsafe actions by coker-drum operators
| By Chemical Engineering