SIL 2 safety architecture designed for process control applications

Matrix SafetyNet SIL 2 safety system consists of SIL 2-rated safety logic solvers, I/O modules, and a safety logic workbench.

Matrix SafetyNet SIL (safety integrity level) 2 safety system from MTL Open System Technologies (MOST) complies with IEC 61508 . System operates on the Matrix Process Automation System platform for safety related applications, including process shut down (PSD), emergency shut down (ESD) systems, and fire and gas applications.

System achieves its SIL 2 rating without requiring the use of redundant I/O or redundant controllers, lowering cost. Redundant controllers can be added to provide greater system availability. A single Matrix SafetyNet Workbench reportedly can be used to develop process control and functional safety applications. Static analysis tools are provided to assist in verifying and validating the safety strategy.

System consists of SIL 2 rated safety logic solvers, I/O modules, and a safety logic workbench. The safety system shares power supplies, module carriers, and field terminals with the Matrix process control system.

“SIL 2 systems are meeting a growing number of safety system requirements in process plants as users are trying to reduce the hazards in their plants to acceptable levels,” said Dave Reynolds, MOST vice president of marketing. “Many companies have determined that if an operation requires a SIL 3, then it is too hazardous and needs to be redesigned. After working to reduce the risks in their plants to SIL 2 or lower, customers are then looking to optimize their investments in safety related systems with the appropriate level of risk reduction. In these applications, a SIL 2 safety system provides a very cost effective solution.”

—Jeanine Katzel, senior editor, Control Engineering, jkatzel@reedbusiness.com

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