Safety Integrity Level (SIL): A Practical Guide for Engineers Building Process Control Software

Description and use

<p>If you write code that sits close to a plant's control or shutdown logic (PLC programs, firmware in a field transmitter, DCS or safety system configuration, or the tooling around them), you will eventually see a requirement like "this function must be SIL 2." The term gets used loosely, and the loose usage causes real engineering mistakes.</p> <p>This guide explains what a safety integrity level actually is, how it is determined and verified, and what it means for the people who build and maintain software in oil and gas, chemical, and other process industries.</p> <h2> What a safety integr

Problem

<p>If you write code that sits close to a plant's control or shutdown logic (PLC programs, firmware in a field transmitter, DCS or safety system configuration, or the tooling around them), you will eventually see a requirement like "this function must be SIL 2." The term gets used loosely, and the loose usage causes real engineering mistakes.</p> <p>This guide explains what a safety integrity level actually is, how it is determined and verified, and what it means for the people who build and maintain software in oil and gas, chemical, and other process industries.</p> <h2> What a safety integr

Outcome

<p>If you write code that sits close to a plant's control or shutdown logic (PLC programs, firmware in a field transmitter, DCS or safety system configuration, or the tooling around them), you will eventually see a requirement like "this function must be SIL 2." The term gets used loosely, and the loose usage causes real engineering mistakes.</p> <p>This guide explains what a safety integrity level actually is, how it is determined and verified, and what it means for the people who build and maintain software in oil and gas, chemical, and other process industries.</p> <h2> What a safety integr

Evidence

Safety Integrity Level (SIL): A Practical Guide for Engineers Building Process Control Software

Source