Fundamental Question on Safety instrumented System SIS

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*************What You Will Learn****************************

The Safety Instrumented Systems – Overview and Awareness , what safety instrumented systems are and how they are employed in the process industries to reduce risk. How safety instrumented systems are different from basic process controls systems, provides an overview of why safety instrumented systems are employed.

The lifecycle for implementation of safety instrumented systems as presented in the IEC 61511 standard.

· Importance of Safety instrumented systems

· Understand philosophy of Layers of Protection

· Know steps in the Safety Lifecycle

· Understand Safety Integrity Levels (SIL) impact SIS Design

· Know what’s needed in a Safety Requirements Specification (SRS)

· Understand SIS Operation, Maintenance & Testing Requirements

What is Safety ?

               Safety can be defined as “freedom from unacceptable risk.”

What is safety instrumented system (SIS) ?

                It detects “out of control” conditions and automatically returns the process to a safe state.

What is function of safety instrumented system (SIS) ?

               The foundation for any modern safety system, then, is to reduce risk to an acceptable or tolerable level. Risk can be minimized initially by inherently safe process design, by the Basic Process Control System (BPCS), and finally by a safety shutdown system.

***** I Hope you will find Quiz very useful. *****************

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