Emerson’s SIS promotes safer process plants
Emerson Process Management’s new smart safety instrumented system (SIS) extends PlantWeb digital plant architecture to allow customers to implement safer process plants.
Smart safety instrumented system (SIS) takes an integrated complete-safety-loop approach.
Emerson Process Management ’s new smart safety instrumented system (SIS) extends PlantWeb digital plant architecture to allow customers to implement safer process plants. It employs digital intelligence and diagnostics from sensor to logic solver to final control. Automated safety-loop testing and a variety of other features increase system availability while reducing life-cycle costs and easing regulatory compliance.
SIS solutions are built from PlantWeb technologies and include intelligent field devices, predictive diagnostics, and digital communications. They ensure an SIL3 (safety integrity level) approach that includes transmitters and valve controllers certified to IEC 61508 and SIL3-ratified safety systems. An SIS may be integrated with mainstream basic process control systems for facility-wide overview, while maintaining separation of safety-critical elements as required by IEC standards. Safety data and alarms are presented on DeltaV operator interfaces, stored in its historians, and passed to AMS Suite: Intelligent Device Manager software for integrated documentation and management.
DeltaV SIS systems that communicate with SIS sensors and final control elements;
SIS sensors, including Rosemount’s 3051S pressure transmitter and 3144P temperature transmitter;
Final control elements with partial stroke testing, including SIL-PAC emergency shutdown valves;
DeltaV SIS software; and
AMS Device Manager software.
[Above] Final control elements with automated partial-stroke testing improve the safety level, reducing the number of field trips and increasing the mandatory proof test interval. Palette of certified smart function blocks lets users accomplish tasks with drag-and-drop techniques.
John Berra, president of Emerson Process Management, says smart SIS delivers the same ease of use and efficiencies for safety in process facilities as PlantWeb architecture does for mainstream process automation.
— Jeanine Katzel , senior editor, Control Engineering