In this post, I want to share with you about three layers of integrated control and safety systems. The layers consist of Basic Process Control System (BPCS), alarm, and Safety Instrumented System (SIS). I heard about these terms of BPCS and SIS quite late in my career as process engineer. I hope those do not happen to you
![Three layers of integrated control and safety systems](https://i0.wp.com/missrifka.com/wp-content/uploads/2023/07/Three-layers-of-integrated-control-and-safety-systems-2.jpg?resize=429%2C385&ssl=1)